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Sample records for mexico statewide geothermal

  1. New Mexico statewide geothermal energy program. Final technical report

    SciTech Connect

    Icerman, L.; Parker, S.K.

    1988-04-01

    This report summarizes the results of geothermal energy resource assessment work conducted by the New Mexico Statewide Geothermal Energy Program during the period September 7, 1984, through February 29, 1988, under the sponsorship of the US Dept. of Energy and the State of New Mexico Research and Development Institute. The research program was administered by the New Mexico Research and Development Institute and was conducted by professional staff members at New Mexico State University and Lightning Dock Geothermal, Inc. The report is divided into four chapters, which correspond to the principal tasks delineated in the above grant. This work extends the knowledge of the geothermal energy resource base in southern New Mexico with the potential for commercial applications.

  2. New Mexico Statewide Assessment Program (NMSAP) Procedures Manual, 2007-2008

    ERIC Educational Resources Information Center

    New Mexico Public Education Department, 2007

    2007-01-01

    This manual has been prepared for all New Mexico Statewide Assessment Program (NMSAP) assessment administrators, teachers, school specialists, and principals. It includes information about the following topics: PED contacts, New Mexico Standards Based Assessments (SBA), Grades 3-8 and 11; New Mexico High School Competency Examination (NMHSCE);…

  3. SW New Mexico BHT geothermal gradient calculations

    SciTech Connect

    Shari Kelley

    2015-07-24

    This file contains a compilation of BHT data from oil wells in southwestern New Mexico. Surface temperature is calculated using the collar elevation. An estimate of geothermal gradient is calculated using the estimated surface temperature and the uncorrected BHT data.

  4. Geothermal Field Development in Mexico

    SciTech Connect

    Espinosa, Hector Alonso

    1983-12-15

    Mexico is a Country characterized by its diversified means of Power Gerneration. Actual installed capacity is almost 19000 MW, of which 205 MW corresponds to Geothermal Plants, that is, 180 MW in Cerro Prieto and 25 MW of Portable Plants in Los Azufres. To date, 346 area with exploitation possibilites, are known. They are mainly distributed along the Volcanic Belt where the most prominent are, Los Azufres, La Primavera, Los Humeros, Ixtlan De Los Hervores and Los Negritos, among others. Proved reserves are 920 MW, and the accessible resource base are 4600 MW identified and 6000 MW undiscovered. The long range construction studies intends to achieve a total installed capacity of 100000 MW, by the end of this century, including 2000 MW Geothermal, through conventional and Portable Plants. It is not a definite program but a development strategy. The carrying out of a definite program, will depend upon the confirmation of Hypothesis made in previous studies, and the economic decisions related to the financial sources availability, and techologies to be used in the future as well.

  5. Program accomplishments and future prospects for low-temperature geothermal resource assessment in New Mexico

    SciTech Connect

    Icerman, L.; Ruscetta, C.A.

    1982-07-01

    An important component of the State-coupled program has been basic studies in specific regions of New Mexico, including areas adjacent to the cities of Albuquerque, Las Cruces, Socorro, and Truth or Consequences. Considerable geological, hydrological, electrical resistivity, gravity, magnetic, seismic, water analysis, and subsurface temperature data have been compiled and analyzed for these locations. During the four-year research program, a total of 25 tasks have been undertaken. Eleven of these tasks were focused toward collecting and compiling statewide data, six were regional studies covering more than one county, and eight were research projects directed primarily toward data collection near specific cities or known resource areas. Two of these latter studies contributed significantly to the confirmation of the Las Alturas geothermal anomaly east of Las Cruces. A brief summary of the program accomplishments by task is presented. The resource assessment programs in New Mexico have been very successful in (1) delineating low-temperature geothermal resources throughout New Mexico on statewide, regional, and area-specific scales; (2) developing a strong community of in-state geothermal energy research and development professionals and practitioners; and (3) elevating the level of awareness of geothermal energy potential among commerce, industry, and the general public. Future prospects for the state are presented.

  6. A geothermal resource data base: New Mexico

    SciTech Connect

    Witcher, J.C.

    1995-07-01

    This report provides a compilation of geothermal well and spring information in New Mexico up to 1993. Economically important geothermal direct-use development in New Mexico and the widespread use of personal computers (PC) in recent years attest to the need for an easily used and accessible data base of geothermal data in a digital format suitable for the PC. This report and data base are a part of a larger congressionally-funded national effort to encourage and assist geothermal direct-use. In 1991, the US Department of Energy, Geothermal Division (DOE/GD) began a Low Temperature Geothermal Resources and Technology Transfer Program. Phase 1 of this program includes updating the inventory of wells and springs of ten western states and placing these data into a digital format that is universally accessible to the PC. The Oregon Institute of Technology GeoHeat Center (OIT) administers the program and the University of Utah Earth Sciences and Resources Institute (ESRI) provides technical direction.

  7. Status of geothermal electrical power development in Mexico

    SciTech Connect

    Alonso E.H.; Manon M.A.

    1983-09-01

    A review of geothermal power generation in Mexico is given. The status of power plants on-line and under construction at Cerro Prieto, Los Azufres, and Los Humeros is presented. A forecast of generating capacity for the future is given along with the obstacles to geothermal energy development in Mexico.

  8. Wood and fruit drying in Los Azufres geothermal field, Mexico

    SciTech Connect

    Casimiro, E.; Pastrana, E.

    1996-12-31

    The main object of Comision Federal de Electricidad (CFE`s) Geothermal Field at Los Azufres, is to generate geothermal electricity; however with the new politics in Mexico CFE has built a pilot project in order to profit from the geothermal residual energy and to attract national or foreign investors and convince them that direct-use of geothermal energy is an attractive feasible and economical possibility. The object of this paper is to present the CFE experiences in wood and fruit drying using geothermal energy.

  9. Results of the 2010 Statewide New Mexico School Social Work Survey: Implications for Evaluating the Effectiveness of School Social Work

    ERIC Educational Resources Information Center

    Whittlesey-Jerome, Wanda

    2013-01-01

    Today's school social workers are facing unique challenges in the workplace. The results of the 2009 New Mexico School Social Work Survey reinforced the idea that school social workers must be able to prove their effectiveness. Building on the school social work literature on practice outcomes evaluation, a more extensive statewide survey of…

  10. The Suitability of Conductive and Convective Geothermal Resources in New Mexico for EGS Systems

    NASA Astrophysics Data System (ADS)

    Person, M. A.; Owens, L.; Hubbling, J.; Kelley, S.; Witcher, J. C.; Lucero, S.

    2010-12-01

    The State of New Mexico is endowed with both deep conductive and shallow convective geothermal prospects. Shallow convective resources are associated with relatively permeable, fractured crystalline plutonic, volcanic and sedimentary bedrock units. In most instances, hot springs associated with these systems are located along gaps in Paleozoic to Tertiary confining units that form hydrogeologic windows. Hydrogeologic windows are created either from tectonic or erosional unroofing of permeable units or juxtaposition of permeable units by fault block rotation or the emplacement of fractured volcanic dikes. Other hydrogeologic windows form as a result of close-spaced faulting associated with normal fault accommodation or transfer zones. These systems have broad areas of low and background heat flow in recharge areas and deep lateral flow domains with narrow regions of extremely high heat flow over the upflow zones and associated shallow lateral outflow plumes. These systems can show isothermal conditions at depth in the upflow zones that feed shallow outflow plumes and hot springs. The Socorro geothermal system is a prime example of this type of a geothermal prospect. Deeper conductive targets are overlain by relatively thick low permeability sedimentary or volcanoclastic sequences that have relatively, low thermal conductivity and higher temperature gradients. Portions of the San Juan Basin and Rio Grande rift are characterized by this type of geothermal prospect. NM Tech is currently developing a state-wide assessment of New Mexico’s geothermal resources for the New Mexico Energy Conservation and Management Division. We present two finite element models of conductive-convective heat transfer along the Rio Grande Rift and San Juan Basin to evaluate the suitability of these two types of geothermal resources for EGS systems.

  11. Geothermal studies at Kirtland Air Force Base, Albuquerque, New Mexico

    SciTech Connect

    Riddle, L.; Grant, B.

    1981-05-01

    Due to an effort by government installations to discontinue use of natural gas, alternative energy sources are being investigated at Kirtland Air Force Base, Albuquerque, New Mexico. New Mexico has geologic characteristics favorable for geothermal energy utilization. Local heat flow and geochemical studies indicate a normal subsurface temperature regime. The alluvial deposits, however, extend to great depths where hot fluids, heated by the normal geothermal gradient, could be encountered. Two potential models for tapping geothermal energy are presented: the basin model and the fault model.

  12. Comparison of Remotely Sensed Precipitation and Evapotranspiration Products for a Statewide Water Assessment of New Mexico

    NASA Astrophysics Data System (ADS)

    Schmugge, T. J.; Fernald, A.; Peterson, K.; Walker, S.; Hewitt, I. C.; Hendrickx, J. M. H.

    2014-12-01

    Precipitation and evapotranspiration (ET) are the major components of the water balance in New Mexico. Therefore, it is critical to acquire accurate precipitation and ET data as input into a statewide water balance. Since existing meteorological stations in New Mexico don't cover the entire state and leave many areas without accurate information, we propose to evaluate the accuracy of existing nationwide remotely sensed databases for precipitation and ET to quantify the spatial and temporal distributions of those components in a statewide water balance. In this study we compare five precipitation products and three ET products: the CHIRPS (Climate Hazard Group InfraRed Precipitation with Station data) model, the National Weather Service Advanced Hydrologic Prediction Service product, the PERSIANN-GCCS (Precipitation Estimation from Remote Sensed Information using Artificial Neural Network - Global Cloud Classification System) model, the PRISM (Parameter-elevation Relationships on Independent Slopes) model the TRMM (Tropical Rainfall Measuring Mission, the ALExI (Atmosphere-Land Exchange Inverse) model, the MOD 16 ( MODIS Global Evapotranspiration Product) model of NASA, and the SSEB (Simplified Surface Energy Balance) model produced by the USGS. Early results show a strong relationship between all precipitation products across the state of New Mexico from 2000 to 2013 with an average depth of 315 mm, except for the PERSIANN model which has a rainfall depth approximately 53% higher (673mm) than the average of the other models. Additionally there is a strong relationship between the ALExI and SSEB ET models yet these models exceed the precipitation in the state by approximately 35%. The MOD 16 ET model has an average ET depth approximately 42% less than the average of the precipitation models and about 60% less than the ALExI and SSEB ET models. Future work includes validation of precipitation and ET models using high density rain gauge networks, as well as METRIC

  13. Southern New Mexico low temperature geothermal resource economic analysis

    NASA Astrophysics Data System (ADS)

    Fischer, Carol L.; Whittier, Jack; Witcher, James C.; Schoenmackers, Rudi

    1990-08-01

    An economic evaluation of three low-temperature geothermal sites in New Mexico were performed. A hypothetical geothermal system was designed to supply sufficient energy to satisfy thermal loads for one, four, ten, and fifteen acre commercial greenhouses. Geothermal sites were evaluated to identify the important infrastructure requirements. Capital and operating costs were estimated. Annual levelized costs were calculated for the provision of hot water and fresh water for each site. Geothermal costs were compared with annual levelized costs for a natural gas system to supply the equivalent thermal load. Calculated results indicate that geothermal systems may be competitive with natural gas for larger installations. It is not economically attractive to develop a small geothermal system because the initial capital costs are not recovered with reduced operating costs, relative to natural gas.

  14. Geothermal Fields on the Volcanic Axis of Mexico

    SciTech Connect

    Mercado, S.; Gonzalez, A.

    1980-12-16

    At present in Mexico, geothermal energy is receiving a great impulse due to the excellent results obtained in the Cerro Prieto geothermal field, in which a geothermoelectric plant is operated. This plant has four units of 37.5 MW each, with a total capacity of 150 MW, and under program 470 MW more by 1984. The Government Institution, Comisi6n Federal de Electricidad, is in charge of the exploration and exploitation of geothermal fields as well as construction and operation of power plants in Mexico. By this time CFE has an extensive program of exploration in the central part of Mexico, in the Eje Neovolcdnico. In this area, several fields with hydrothermal alteration are under exploration, like the Michoac6n geothermal area, where Los Azufres geothermal field is being developed. Seventeen wells have been drilled and twelve of them presented excellent results, including two dry steam wells. In other areas, such as Arar6, Cuitzeo, San Agustln del Maiz,Ixtldn de Los Hervores and Los Negritos, geological, geophysical and geochemical explorations have been accomplished, including shallow well drilling with good results. Another main geothermal area is in the State of Jalisco with an extension of 5,000 m2, where La Primavera geothermal field shows a lot of volcanic domes and has an intensive hydrothermal activity. Deep wells have been drilled, one of them with a bottom temperature of 29OOC. Other fields in this area, like San Narcos, Hervores de La Vega, La Soledad, Villa Corona, etc., have a good geothermal potential. A new geothermal area has been explored recently in the eastern part of the country named Los Humeros, Puebla. In this area studies are being made and there are plans for well drilling exploration by the beginning of 1981. Like this one, there are many other areas in the country in which 300 hydrothermal alteration zones are been classified and 100 of them are considered economically exploitable.

  15. Regional geothermal exploration in north central New Mexico. Final report

    SciTech Connect

    Icerman, L.

    1984-02-01

    A broad-based geothermal resource reconnaissance study covering Bernalillo, Los Alamos, Rio Arriba, San Miguel, Sandoval, Santa Fe, Taos, Torrance, and Valencia counties in north central New Mexico was conducted from June 15, 1981, through September 30, 1983. Specific activities included the compilation of actual temperature, bottom-hole temperature gradient, and geotemperature data; tabulation of water chemistry data; field collection of temperature-depth data from existing wells; and drilling of temperature gradient holes in the Ojo Caliente, San Ysidro, Rio Puerco, and Polvadera areas. The data collected were used to perform: (1) a regional analysis of the geothermal energy potential of north central New Mexico; (2) two site-specific studies of the potential relationship between groundwater constrictions and geothermal resources; (3) an evaluation of the geothermal energy potential at Santa Ana Pueblo; (4) a general analysis of the geothermal energy resources of the Rio Grande Rift, including specific data on the Valles Caldera; and (5) an evaluation of the use of geothermometers on New Mexico groundwaters. Separate abstracts were prepared for individual chapters.

  16. New Mexico State University Campus geothermal demonstration project

    SciTech Connect

    Cuniff, R.A.; Fisher, K.P.; Chintawongvanich, P.

    1984-04-01

    This report presents the design, construction highlights, and performance of the New Mexico State University Campus Geothermal Demonstration Project at Las Cruces, New Mexico. Construction started in July 1981, first system use was January 1982, and the system was dedicated on April 21, 1982. Included herein are summary observations after two years of use. The geothermal hot water from New Mexico State University wells is used to heat potable water, which in turn provides 83 percent of the domestic hot water on the New Mexico State University campus, as well as space heat to two buildings, and for two heated swimming pools. The original system is providing service to 30 total buildings, with two additional buildings (150,000 square feet) in process of geothermal conversion.) The system overall performance has been excellent, except for geothermal well pump problems. In terms of operating efficiency, the system has exceeded the design parameters. In spite of abnormally high costs for well and pump repairs, the system has shown a positive cost avoidance of more than $118,000 for the first year of operation. For the first two full years of operation, the system has produced a net positive cost avoidance of more than $200,000. Payback on the total investment of $1,670,000 is projected to be 6 to 10 years, depending on the future prices of natural gas and electricity.

  17. New Mexico Geothermal Play Fairway Analysis from LANL

    SciTech Connect

    Rick Kelley

    2015-10-27

    This submission contains geospatial (GIS) data on water table gradient and depth, subcrop gravity and magnetic, propsectivity, heat flow, physiographic, boron and BHT for the Southwest New Mexico Geothermal Play Fairway Analysis by LANL Earth & Environmental Sciences. GIS data is in ArcGIS map package format.

  18. Geothermal energy from deep sedimentary basins: The Valley of Mexico (Central Mexico)

    NASA Astrophysics Data System (ADS)

    Lenhardt, Nils; Götz, Annette E.

    2015-04-01

    The geothermal potential of the Valley of Mexico has not been addressed in the past, although volcaniclastic settings in other parts of the world contain promising target reservoir formations. A first assessment of the geothermal potential of the Valley of Mexico is based on thermophysical data gained from outcrop analogues, covering all lithofacies types, and evaluation of groundwater temperature and heat flow values from literature. Furthermore, the volumetric approach of Muffler and Cataldi (1978) leads to a first estimation of ca. 4000 TWh (14.4 EJ) of power generation from Neogene volcanic rocks within the Valley of Mexico. Comparison with data from other sedimentary basins where deep geothermal reservoirs are identified shows the high potential of the Valley of Mexico for future geothermal reservoir utilization. The mainly low permeable lithotypes may be operated as stimulated systems, depending on the fracture porosity in the deeper subsurface. In some areas also auto-convective thermal water circulation might be expected and direct heat use without artificial stimulation becomes reasonable. Thermophysical properties of tuffs and siliciclastic rocks qualify them as promising target horizons (Lenhardt and Götz, 2015). The here presented data serve to identify exploration areas and are valuable attributes for reservoir modelling, contributing to (1) a reliable reservoir prognosis, (2) the decision of potential reservoir stimulation, and (3) the planning of long-term efficient reservoir utilization. References Lenhardt, N., Götz, A.E., 2015. Geothermal reservoir potential of volcaniclastic settings: The Valley of Mexico, Central Mexico. Renewable Energy. [in press] Muffler, P., Cataldi, R., 1978. Methods for regional assessment of geothermal resources. Geothermics, 7, 53-89.

  19. The Los Azufres, Michoacan, Mexico, geothermal field

    NASA Astrophysics Data System (ADS)

    Gutierrez N., Augusto; Aumento, Fabrizio

    1982-03-01

    Fifteen deep exploratory and production wells in a 30-km 2 area have permitted the study of both the primary igneous petrology and the secondary geothermal system and its associated mineralization. The Los Azufres field lies on a complex Plio-Pleistocene succession of basalts, andesites, dacites and rhyolites, each with its associated tuffs. Recently, alkali basalt magmas have intruded the area, extruding minor lava flows. Geothermal fluids have altered all the above rocks from a minimum of 20% of the total rock volume, to a maximum of 100%, with an average 75% alteration. Multiple distinct zones of oxides, clay minerals, chlorites, calcite, quartz and epidote are discernible, together with minor amphiboles, zeolites and pyrite. There appear to have been two distinct heat sources, the first associated with the youngest rhyolitic extrusives, whilst the second, current heat source, at a considerably greater depth, may be due to a new, more basic magmatic cycle. This downward displacement is associated with a lateral, northeasterly migration of the heat source. Both geothermal systems were accompanied by temporary escapes of hot fluids along fault planes at different localities at different times, which produced localized, anomalous heat fluxes with associated mineralization superimposed onto the regional geothermal pattern.

  20. Southern New Mexico low temperature geothermal resource economic analysis

    SciTech Connect

    Fischer, C.L.; Whittier, J.; Witcher, J.C.; Schoenmackers, R.

    1990-08-01

    This report presents an overview of geothermal resource development for three-low temperature (i.e, <200{degree}F) sites in southern New Mexico: the Lower Animas Valley, the Las Cruces East Mesa, and Truth or Consequences. This report is intended to provide potential geothermal developers with detailed information on each site for planning and decision making purposes. Included in the overview for each site is both a full site characterization and an economic analysis of development costs associated with the construction and operation of both geothermal and fresh water systems at each of the three locations. The economic analysis focuses on providing utility services to a commercial greenhouse because greenhouse operations are among the most likely candidates for use of the resource base. 9 tabs., 8 figs.

  1. Mushroom growing project at the Los Humeros, Mexico geothermal field

    SciTech Connect

    Rangel, M.E.R.

    1998-12-01

    There are several projects of direct (non-electrical) use of geothermal energy in Mexico. Personnel of the Comision Federal de Electricidad (CFE) have experience in various of these projects, like drying of timber and fruits, space heating, food processing, etc. Taking this in consideration, CFE built the Los Humeros mushroom plant using for heat source the geothermal steam from Well H-1. The main purpose of the project was to take advantage of residual geothermal energy in a food production operation and to develop the appropriate technology. In 1992, existing installations were renovated, preparing appropriate areas for pasteurization, inoculation and production. The mushroom Pleurotus ostreatus var. florida and columbinus was used. A year later, CFE proposed the construction of improved facilities for growing edible mushrooms. New materials and equipment, as well as different operation conditions, were proposed on the basis of the experience gained in the initial project. The construction and renovation activities were completed in 1994.

  2. Geothermal materials survey: Baca Geothermal Demonstration Power Plant, Baca, New Mexico

    SciTech Connect

    Ellis, P.F. II

    1980-10-07

    The results of a materials survey for the Baca 50 MW(e) single flash geothermal plant in the Valles Caldera of New Mexico are presented. From the design documents provided, materials proposed for use in contact with the plant atmosphere, the two-phase geofluid, the separated steam, and the recirculating condensate cooling water were assessed for suitability. Special emphasis was given to records of performance of the materials in other geothermal plants. Based upon these considerations of chemical reactivity and plant operating experience, a number of recommendations were made.

  3. Geothermal resources of the northern gulf of Mexico basin

    USGS Publications Warehouse

    Jones, P.H.

    1970-01-01

    Published geothermal gradient maps for the northern Gulf of Mexico basin indicate little or no potential for the development of geothermal resources. Results of deep drilling, from 4000 to 7000 meters or more, during the past decade however, define very sharp increases in geothermal gradient which are associated with the occurrence of abnormally high interstitial fluid pressure (geopressure). Bounded by regional growth faults along the landward margin of the Gulf Basin, the geopressured zone extends some 1300 km from the Rio Grande (at the boundary between the United States and Mexico) to the mouth of the Mississippi river. Gulfward, it extends to an unknown distance across the Continental Shelf. Within geopressured deposits, geothermal gradients range upwards to 100 ??C/km, being greatest within and immediately below the depth interval in which the maximum pressure gradient change occurs. The 120 ??C isogeotherm ranges from about 2500 to 5000 m below sea level, and conforms in a general way with depth of occurrence of the top of the geopressured zone. Measured geostatic ratios range upward to 0.97; the maximum observed temperature is 273 ??C, at a depth of 5859 m. Dehydration of montmorillonite, which comprises 60 to 80 percent of clay deposited in the northern Gulf Basin during the Neogene, occurs at depths where temperature exceeds about 80 ??C, and is generally complete at depths where temperature exceeds 120 ??C. This process converts intracrystalline and bound water to free pore water, the volume produced being roughly equivalent to half the volume of montmorillonite so altered. Produced water is fresh, and has low viscosity and density. Sand-bed aquifers of deltaic, longshore, or marine origin form excellent avenues for drainage of geopressured deposits by wells, each of which may yield 10,000 m3 or more of superheated water per day from reservoirs having pressures up to 1000 bars at depths greater than 5000 m. ?? 1971.

  4. Heating the New Mexico Tech Campus with geothermal energy. Final report, July 1, 1978-October 31, 1979

    SciTech Connect

    LeFebre, V.; Miller, A.

    1980-01-01

    An area between the base of Socorro Peak and the New Mexico Tech Campus (located in central New Mexico) has been proposed as a site for geothermal exploratory drilling. The existing site environment is summarized, a program for site monitoring is proposed, impacts of geothermal production and reinjection are listed, and problems associated with geothermal development are examined. The most critical environmental impact is the increased seismic activity that may be associated with geothermal fluid migration resulting from geothermal production and reinjection.

  5. Hydrocarbons emissions from Cerro Prieto Geothermal Power Plant, Mexico

    NASA Astrophysics Data System (ADS)

    Navarro, Karina; Navarro-González, Rafael; de la Rosa, José; Peralta, Oscar; Castro, Telma; Imaz, Mireya

    2014-05-01

    One of the most important environmental issues related to the use of geothermal fluids to generate electricity is the emission of non-condensable gases to the atmosphere. Mexico has one of the largest geothermal plants in the world. The facility is located at Cerro Prieto, Baja California, roughly 30 km south of Mexicali and the international boundary between Mexico and United States. The Cerro Prieto power plant has 13 units grouped on four individual powerhouses. Gas samples from 9 units of the four powerhouses were collected during 4 campaigns conducted in May-July, 2010, February, 2012, December, 2012, and May, 2013. Gas samples from the stacks were collected in 1000 ml Pyrex round flasks with Teflon stopcocks, and analyzed by gas chromatography-mass spectrometry. Methane was the most abundant aliphatic hydrocarbon, with a concentration that ranged from less than 1% up to 3.5% of the total gas mixture. Normal alkanes represented the second most abundant species, and displayed a decreasing abundance with increasing carbon number in the homologous series. Isoalkanes were also present as isobutane and isopentane. Cycloalkanes occurring as cyclopentane and cyclohexane, were detected only at trace level. Unsaturated hydrocarbons (alkenes and alkynes) were not detected. Benzene was detected at levels ranging from less than 1% up to 3.4% of the total gas mixture. Other aromatic hydrocarbons detected were toluene, and xylenes, and were present at lower concentrations (

  6. Utilization of geothermal energy for agribusiness development in southwestern New Mexico. Technical completion report, July 19, 1978-May 30, 1980

    SciTech Connect

    Landsford, R.R.; Abernathy, G.H.; Gollehon, N.R.

    1981-01-01

    An evaluation is presented of the direct heat utilization from geothermal resources for agribusiness uses in the Animas Valley, Southwestern New Mexico. The analysis includes an evaluation of the groundwater and geothermal resources in the Animas Valley, monitoring of an existing geothermal greenhouse, and evaluation of two potential agribusiness applications of geothermal waters (greenhouses and meat precooking).

  7. Geothermal Exploration of the Winston Graben, Central New Mexico, USA

    NASA Astrophysics Data System (ADS)

    Sophy, M. J.; Kelley, S. A.

    2011-12-01

    We are assessing the geothermal potential of the Winston Graben of central New Mexico using borehole temperature logs and geophysical data. The Winston Graben is a late Cenozoic rift basin, part of the larger Rio Grande rift, which is 5 to 10 km wide and 56 km long with northern and southern termini occurring at accommodation zones that coincide with late Cenozoic volcanic lineaments. The graben is interpreted to be symmetric based on geologic mapping, with 2 km of stratigraphic offset on both the western and eastern margins. The graben is bordered by the Black Range to the west and is separated from the Rio Grande valley by the Sierra Cuchillo, a horst block made of Paleozoic rocks intruded by a laccolith. Geothermal and geophysical data, including water table measurements, well temperature logs, thermal conductivity samples, bottom hole temperatures, water chemistry, and gravity data have been extracted from the New Mexico Geothermal Database, part of the National Geothermal Database, and the Geonet Gravity and Magnetic Dataset Repository. Combined with existing geologic maps of the Winston Graben and surroundings, these data help to identify spatial relationships between geologic structures and groundwater parameters and distribution. Geothermal gradients from industry temperature-depth well profiles range from 20°C/km to 60°C/km with a spatial distribution of higher gradients located on the eastern side of the Sierra Cuchillo horst, which is where a mapped warm spring is located. Lower thermal gradients were observed to the west in the groundwater recharge area of the basin. Analysis of Bouguer gravity data indicate a gravity low coinciding with the center of the Winston Graben, which is attributed to be the deepest part of the basin, symetrically surrounded by gravity highs. Gravity highs coincide with the middle Cenozoic Morenci and Chise volcanic lineaments along the northern and southern ends of the graben. The mapped warm spring occurs at the

  8. Microfossils from Cerro Prieto geothermal wells, Baja California, Mexico

    SciTech Connect

    Cotton, M.L.; Haar, S.V.

    1982-08-10

    To aid in a paleonenvironmental and age reconstruction of the Cerro Prieto reservoir system, 59 samples of well cuttings were analyzed for microfossils. The cuttings were obtained at depths from 351 to 3495m in 14 geothermal wells in the Cerro Prieto field, Baja California, Mexico. Foraminifera was found in 6 samples, ostracodes in 19 samples and mannoplankton as coccoliths in 24 samples. Other groups, such as molluscus, insects, fish skeletal parts, and plant material were occasionally present. Detailed interpretations at this time cannot be made because of poor preservation of samples. This is primarily due to causes: dissolution by geothermal fluids that reach 350/sup 0/C, and the extensive mixing of filled Cretaceous forms (reworked from the Colorado Plateau region) with Tertiary species during drilling. Further studies of ostracodes and foraminifera from colder portions of the wells are needed. The abundant and well-preserved ostracodes indicate marine to backish water inviroments that correspond in part, to lagoonal or estuarine facies. The presence of the mid-Tertiary (15-m.y.-old) marine foraminifera, Cassigerinela chipolensis, in wells M-11 and M-38, 350 to 500m deep, is perplexing. These are not laboratory contaminates and, as yet have not been found in the drilling mud. If further studies confirm their presence at Cerro Prieto, established ideas about the opening of the Gulf of California and about Pacific Coast mid-Tertiary history will need to be rewritten.

  9. Microfossils from Cerro Prieto geothermal wells, Baja California, Mexico

    SciTech Connect

    Cotton, M.L.; Vonder Haar, S.

    1980-01-01

    To aid in a paleoenvironmental and age reconstruction of the Cerro Prieto reservoir system, 59 samples of well cuttings were analyzed for microfossils. The cuttings were obtained at depths from 351 to 3495 m in 14 geothermal wells in the Cerro Prieto field, Baja California, Mexico. We found foraminifera in 6 samples, ostracodes in 19 samples, and nannoplankton as coccoliths in 24 samples. Other groups, such as molluscs, insects, fish skeletal parts, and plant material were occasionally present. Detailed interpretations are not possible at this time because of poor preservation of samples. This is primarily due to causes: dissolution by geothermal fluids that reach 350{sup 0}C, and the extensive mixing of filled Cretaceous forms (reworked from the Colorado Plateau region) with Tertiary species during drilling. Further studies of ostracodes and foraminifera from colder portions of the wells are needed. The abundant and well-preserved ostracodes indicate marine to brackish water environments that correspond, in part, to lagoonal or estuarine facies. The presence of the mid-Tertiary (15-My-old) marine foraminifera, Cassigerinela chipolensis, in wells M-11 and M-38, 350 to 500 m deep, is perplexing. These are not laboratory contaminates and, as yet, have not been found in the drilling mud. If further studies confirm their presence at Cerro Prieto, established ideas about the opening of the Gulf of California and about Pacific Coast mid-Tertiary history will need to be rewritten.

  10. Utilization of geothermal energy for agribusiness development in southwestern New Mexico

    SciTech Connect

    Lansford, R.R.; Chaturvedi, L.N.; Abernathy, G.H.; Creel, B.J.; Nelson, D.C.; Cotter, D.J.; Gollehon, N.R.; Clevenger, T.S.; Patterson, R.C.

    1980-09-01

    Animas Valley in southwestern New Mexico is an agricultural area of high geothermal energy potential. Geothermal water at boiling temperature is encountered at 88 feet below the ground surface at the center of the geothermal anomaly. A feasibility study for utilization of this geothermal resource for greenhouse operation indicates that savings of as much as $143,000 annually could be realized through replacing natural gas by geothermal water for space heating of a five acre greenhouse site. Specific economic analysis for a meat pre-cooking facility using geothermal water indicates that such an operation would not be economical due to the non-availability of adequate quantities of fed beef in the area and the cost of construction of a complex using geothermal water for pre-cooking.

  11. Addressing New Mexico's Nursing Shortage: A Statewide Strategy Framework. Report from the NM Nursing Shortage Statewide Strategy Sessions (NS4), July-October 2002.

    ERIC Educational Resources Information Center

    Barsky, Lewis; Zilke, Suzanne

    In July 2002, the New Mexico Commission on Higher Education and the University of New Mexico Health Sciences Center began a 3-month planning process that brought together a range of stakeholders who looked for ways to address the states nursing shortage. The process was called NS4, for the Nursing Shortage Strategy Sessions, and this report…

  12. H2S and CO2 emissions from Cerro Prieto geothermal power plant, Mexico

    NASA Astrophysics Data System (ADS)

    Peralta, Oscar; Franco, Luis; Castro, Telma; Taran, Yuri; Bernard, Ruben; Inguaggiato, Salvatore; Navarro, Rafael; Saavedra, Isabel

    2014-05-01

    Cerro Prieto geothermal power plant has an operation capacity of 570 MW distributed in four powerhouses being the largest geothermal plant in Mexico. The geothermal field has 149 production wells. It is located in Cerro Prieto, Baja California, 30 km to the south of the Mexico-US border. Two sampling campaigns were performed in December 2012 and May 2013 where geothermal fluids from 46 production wells and 10 venting stacks were obtained and analyzed by gas chromatography coupled to mass spectrometry. Average CO2 and H2S composition of samples from venting stacks were 49.4% and 4.79%, respectively. Based on the chemical composition of samples, the geothermal power plant emits every day from venting stacks 869 tons of CO2, plus 68 tons of H2S, among other non-condensable gases.

  13. Statewide summary for Florida: Chapter L in Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010

    USGS Publications Warehouse

    Handley, Lawrence R.; Spear, Kathryn A.; Baumstark, René; Moyer, Ryan; Thatcher, Cindy

    2013-01-01

    Throughout the past century, emergent wetlands have been declining across the Gulf of Mexico. Emergent wetland ecosystems provide a multitude of resources, including plant and wildlife habitat, commercial and recreational economic activity, and natural barriers against storms. As emergent wetland losses increase, so does the need for information on the causes and effects of this loss; emergent wetland mapping, monitoring, and restoration efforts; and education. This report provides scientists, managers, and citizens with valuable baseline information on the status and trends of emergent wetlands along the coast of the Gulf of Mexico. The Statewide Summary for Florida provides status and trends information for Florida using what data is available during the 1950-2010 time period.

  14. Seismic and magneto-telluric imaging for geothermal exploration at Jemez pueblo in New Mexico

    SciTech Connect

    Huang, Lianjie; Albrecht, Michael

    2011-01-25

    A shallow geothermal reservoir in the Pueblo of Jemez in New Mexico may indicate a commercial-scale geothermal energy potential in the area. To explore the geothermal resource at Jemez Pueblo, seismic surveys are conducted along three lines for the purpose of imaging complex subsurface structures near the Indian Springs fault zone. A 3-D magneto-telluric (MT) survey is also carried out in the same area. Seismic and MT imaging can provide complementary information to reveal detailed geologic formation properties around the fault zones. The high-resolution seismic images will be used together with MT images, geologic mapping, and hydrogeochemistry, to explore the geothermal resource at Jemez Pueblo, and to determine whether a conunercial-scale geothermal resource exists for power generation or direct use applications after drilling and well testing.

  15. Environmental overview for the development of geothermal resources in the State of New Mexico. Final report

    SciTech Connect

    Bryant, M.; Starkey, A.H.; Dick-Peddie, W.A.

    1980-06-01

    A brief overview of the present day geothermal applications for hydrothermal electrical generation and direct heat use and their environmental implications is provided. Technologies and environmental impacts are considered at all points on the pathway of development resource exploration; well field, plant and transmission line construction; and plant operation. The technologies for electrical generation-direct, dry steam conversion; separated steam conversion; single-flash conversion, separated-steam/single-flash conversion and binary cycle conversion and the technologies for direct heat use - direct use of geothermal waters, surface heat exhanger, down-the hole heat exchanger and heat pump are described. A summary of the geothermal technologies planned or in operation within New Mexico geothermal areas is provided. A review of regulations that affect geothermal development and its related environmental impact in New Mexico is presented. The regulatory pathway, both state and federal, of geothermal exploration after the securing of appropriate leases, development, and construction and implementation of a geothermal facility are described. Six categories (Geophysical, Water, Air, Noise, Biota and Socioeconomics) were selected for environmental assessment. The data available is described.

  16. Basic data for thermal springs and wells as recorded in GEOTHERM: New Mexico

    SciTech Connect

    Bliss, J.D.

    1983-07-01

    GEOTHERM sample file contains 251 records for New Mexico. Three computer-generated indexes are found in appendices A, B, and C of this report. The indexes give one line summaries of each GEOTHERM record describing the chemistry of geothermal springs and wells in the sample file for New Mexico. Each index is sorted by different variables to assist the user in locating geothermal records describing specific sites. Appendix A is sorted by the county name and the name of the source. Also given are latitude, longitude (both use decimal minutes), township, range, section, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix B is sorted by county, township, range, and section. Also given are name of source, GEOTHERM record identifier, and temperature (/sup 0/C). Appendix C is first sorted into one-degree blocks by latitude, and longitude, and then by name of source. Adjacent one-degree blocks which are published as a 1:250,000 map are combined under the appropriate map name. Also given are GEOTHERM record identifier, and temperature (/sup 0/C). A bibliography is given in Appendix D.

  17. Pilot fruit drier for Los Azufres geothermal field, Michoacan, Mexico

    SciTech Connect

    Lund, J.W.

    1993-02-01

    Comision Federal de Electricidad (CFE) has a Division in charge of the exploration of a geothermal reservoir located in Los Azufres, State of Michoacan. At present, CFE is only using the steam of the wells and rejecting the hot water that comes off associated with the steam. Based on a trip to the Los Azufres geothermal field in December of 1992, a design for a pilot geothermal fruit drier was undertaken for CFE. The details of the geothermal field and the local fruit production are detailed.

  18. Thermodynamic state updated of the volcanic caldera and geothermal reservoir of Los Humeros, Puebla, Mexico

    NASA Astrophysics Data System (ADS)

    Martínez Reyes, José; Gonzalez Partida, Eduardo; Perez, Renee J.; Tinoco, Michel; Jorge, A.

    2008-10-01

    Based on information of enthalpies of the fluids of wells from the geothermal reservoir of Los Humeros, Puebla, Mexico, we determined the thermodynamic conditions of the reservoir comparing the values of enthalpies of the fluids of discharge of the wells with the values published in the literature for different thermodynamic state of fluids.

  19. Geothermal development in Cerro Prieto Baja California, Mexico (1983)

    SciTech Connect

    Manon M.A.

    1983-09-01

    The actual stage of the expansion program and some of the main characteristics of the Cerro Prieto Geothermal Field are presented. This is similar to the one presented in this same conference back in 1981, but it has been updated.

  20. Soil mercury levels in the area surrounding the Cerro Prieto geothermal complex, MEXICO.

    PubMed

    Pastrana-Corral, M A; Wakida, F T; García-Flores, E; Rodriguez-Mendivil, D D; Quiñonez-Plaza, A; Piñon-Colin, T D J

    2016-08-01

    Even though geothermal energy is a renewable energy source that is seen as cost-effective and environmentally friendly, emissions from geothermal plants can impact air, soil, and water in the vicinity of geothermal power plants. The Cerro Prieto geothermal complex is located 30 km southeast of the city of Mexicali in the Mexican state of Baja California. Its installed electricity generation capacity is 720 MW, being the largest geothermal complex in Mexico. The objective of this study was to evaluate whether the emissions generated by the geothermal complex have increased the soil mercury concentration in the surrounding areas. Fifty-four surface soil samples were collected from the perimeter up to an approximate distance of 7660 m from the complex. Additionally, four soil depth profiles were performed in the vicinity of the complex. Mercury concentration in 69 % of the samples was higher than the mercury concentration found at the baseline sites. The mercury concentration ranged from 0.01 to 0.26 mg/kg. Our results show that the activities of the geothermal complex have led to an accumulation of mercury in the soil of the surrounding area. More studies are needed to determine the risk to human health and the ecosystems in the study area.

  1. Soil mercury levels in the area surrounding the Cerro Prieto geothermal complex, MEXICO.

    PubMed

    Pastrana-Corral, M A; Wakida, F T; García-Flores, E; Rodriguez-Mendivil, D D; Quiñonez-Plaza, A; Piñon-Colin, T D J

    2016-08-01

    Even though geothermal energy is a renewable energy source that is seen as cost-effective and environmentally friendly, emissions from geothermal plants can impact air, soil, and water in the vicinity of geothermal power plants. The Cerro Prieto geothermal complex is located 30 km southeast of the city of Mexicali in the Mexican state of Baja California. Its installed electricity generation capacity is 720 MW, being the largest geothermal complex in Mexico. The objective of this study was to evaluate whether the emissions generated by the geothermal complex have increased the soil mercury concentration in the surrounding areas. Fifty-four surface soil samples were collected from the perimeter up to an approximate distance of 7660 m from the complex. Additionally, four soil depth profiles were performed in the vicinity of the complex. Mercury concentration in 69 % of the samples was higher than the mercury concentration found at the baseline sites. The mercury concentration ranged from 0.01 to 0.26 mg/kg. Our results show that the activities of the geothermal complex have led to an accumulation of mercury in the soil of the surrounding area. More studies are needed to determine the risk to human health and the ecosystems in the study area. PMID:27418073

  2. Geothermal exploration in Trans-Pecos, Texas/New Mexico. Final report

    SciTech Connect

    Roy, R.; Taylor, B.; Miklas, M.P. Jr.

    1983-09-01

    Interest in alternative energy has encouraged the investigation of possible geothermal resources in Trans Pecos, Texas/New Mexico in an area of extensive Cenozoic volcanism with several hot springs. Geochemical analysis of groundwater samples resulted in the definition of two major areas of geothermal interest: the Hueco Bolson in northeastern El Paso County, and the Presidio Bolson. Regional temperature gradient measurements also supported the existence of anomalies in these places, and showed another smaller anomaly in the Finlay Mountains, Hudspeth County. Detailed geophysical and geochemical studies were conducted on these three targets.

  3. Geothermal space heating for the Senior Citizens Center at Truth or Consequences, New Mexico. Final report

    SciTech Connect

    Mancini, T.R.; Chaturvedi, L.N.; Gebhard, T.G.

    1982-03-01

    A demonstration project to heat the Senior Citizens Center at Truth or Consequences, New Mexico with geothermal waters is described. There were three phases to the project: Phase I - design and permitting; Phase II - installation of the heating system and well drilling; and Phase III - operation of the system. All three phases went well and there was only one major problem encountered. This was that the well which was drilled to serve as the geothermal source was dry. This could not have been anticipated and there was, as a contingency plan, the option of using an existing sump in the Teen Center adjacent to the Senior Citizens Center as the geothermal source. The system was made operational in August of 1981 and has virtually supplied all of the heat to the Senior Citizens Center during this winter.

  4. Utilization of geothermal energy-feasibility study, Ojo Caliente Mineral Springs Company, Ojo Caliente, New Mexico

    NASA Astrophysics Data System (ADS)

    1982-04-01

    The feasibility of a geothermal heating system at the Ojo Caliente Mineral Springs Co. was investigated. The geothermal energy will be used to preheat hot water for the laundry facilities and to heat the water for a two pipe fan coil heating system in the hotel. Present annual heating fuel costs of $11,218 for propane will be replaced by electricity to operate fans and pump at an annual cost of $2547, resulting in a net savings of $8671. Installation costs include $10,100 for a well system, $1400 for a laundry system, and $41,100 for a heating system. With the addition of a 10% design fee the total installation cost is $57,860. Ignoring escalating propane fuel prices, tax credits for energy conservation equipment, and potential funding from the State of New Mexico for a geothermal demonstration project, the simple economic payback period for this project is 6.7 years.

  5. Geologic Model of the Baca Geothermal Reservoir, Valles Caldera, New Mexico

    SciTech Connect

    Nielson, Dennis L.; Hulen, Jeffrey B.

    1983-12-15

    The caldera environment represents a complex interaction of volcanic, structural, and often, hydrothermal processes. As a result calderas are often targets for geothermal exploration and development. From the standpoint of the reservoir engineer, such geothermal systems would be hosted by rocks that display a complex interplay of stratigrphic permeability, structural permeability, and changing permeability which results from the process of hydrothermal alteration and new fracture generation. The purpose of this paper is to present a geolgic model of the Baca geothermal reservoir which is situated in New Mexico. The geologic history of the Valles caldera is presented in Smith and Bailey (1968). The data we present is largely based on our studies of subsurface samples from Union Oil Company's Baca project area. Additional results of our work have been published previously (Hulen and Nielson, 1982, 1983; Nielson and Hulen, in press).

  6. Utilization of geothermal energy-feasibility study, Ojo Caliente Mineral Springs Company, Ojo Caliente, New Mexico

    SciTech Connect

    Not Available

    1982-04-01

    This report investigates the feasibility of a geothermal heating system at the Ojo Caliente Mineral Springs Co. The geothermal energy will be used to preheat hot water for the laundry facilities and to heat the water for a two-pipe fan coil heating system in the hotel. Present annual heating fuel costs of $11,218 for propane will be replaced by electricity to operate fans and pump at an annual cost of $2547, resulting in a net savings of $8671. Installation costs include $10,100 for a well system, $1400 for a laundry system, and $41,100 for a heating system. With the addition of a 10% design fee the total installation cost is $57,860. Ignoring escalating propane fuel prices, tax credits for energy conservation equipment, and potential funding from the State of New Mexico for a geothermal demonstration project, the simple economic payback period for this project is 6.7 years.

  7. Chemical Variations in the Rocks of La Primavera Geothermal Field (Mexico) Related with Hydrothermal Alteration

    SciTech Connect

    Prol-Ledesma, R.M.; Hernandez-Lombardini, S.I.; Lozano-Santa Cruz, R.

    1995-01-01

    The origin and fate of the components dissolved in the geothermal fluids are of great importance in the study of epithermal deposits, and in the environmental considerations for exploitation of geothermal fields. The chemical study of La Primavera geothermal field in Mexico has environmental importance due to the high arsenic concentration observed in the thermal water and the possible contamination of aquifers in the area. The variations in the chemistry of all altered samples with respect to unaltered samples indicates depletion of manganese, and the alkalis; and enrichment in iron and magnesium. Most samples show an enrichment in aluminum and titanium, and depletion in silica and calcium. Trace elements follow different trends at various depths: shallow depths are more favorable for deposition of the analyzed trace elements than the surface or the deep part of the reservoir.

  8. Geothermal Energy--Heat from the Earth: New Mexico; GeoPowering the West Series Fact Sheet

    SciTech Connect

    Not Available

    2002-04-01

    New Mexico holds considerable reserves of this clean, reliable form of energy that to date have barely been tapped. New Mexico has more acres of geothermally heated greenhouses than any other state, and aquaculture, or fish farming, is a burgeoning enterprise for state residents. Several electric power generation opportunities also have been identified.

  9. Environmental Considerations for a Geothermal Development in the Jemez Mountains of Central New Mexico

    SciTech Connect

    Sabo, David G.

    1980-12-01

    The demonstration nature of the Baca Geothermal Project and the contractual arrangements between Public Service Company of New Me (PNM) and Union Geothermal Company of New Mexico (Union) with the Department of Energy mandate on environmental monitoring effort previously not seen for an energy development of this size. One of the most often stated goals of the Baca Project is to demonstrate the acceptability and viability of geothermal energy in an environmentally responsible manner. If this statement is to be followed, then a program would have to be developed which would (1) identify all the environmental baseline parameters, (2) monitor them during construction and operation, and (3) alleviate any possible negative impacts. The situation of the Baca project in the Jemez Mountains of north-central New Mexico offers a challenging vehicle with which to demonstrate the acceptability of geothermal energy. A few of the reasons for this are: these mountains are one of the most heavily used recreational resource areas in the state, numerous prehistoric people utilized the canyons and have left considerable archeological resources, the mountains are home for a number of individuals who prefer their serenity to the hustle and bustle of urban dwelling, and finally, the mountains are considered sacred by a number of local Indian tribes, a few of which use the mountaintop as religious sites.

  10. Geothermal low-temperature reservoir assessment in Dona Ana County, New Mexico. Final report

    SciTech Connect

    Icerman, L.; Lohse, R.L.

    1983-04-01

    Sixty-four shallow temperature gradient holes were drilled on the Mesilla Valley East Mesa (east of Interstate Highways 10 and 25), stretching from US Highway 70 north of Las Cruces to NM Highway 404 adjacent to Anthony, New Mexico. Using these data as part of the site selection process, Chaffee Geothermal, Ltd. of Denver, Colorado, drilled two low-temperature geothermal production wells to the immediate north and south of Tortugas Mountain and encountered a significant low-temperature reservoir, with a temperature of about 150{sup 0}F and flow rates of 750 to 1500 gallons per minute at depths from 650 to 1250 feet. These joint exploration activities resulted in the discovery and confirmation of a 30-square-mile low-temperature geothermal anomaly just a few miles to the east of Las Cruces that has been newly named as the Las Cruces east Mesa Geothermal Field. Elevated temperature and heat flow data suggest that the thermal anomaly is fault controlled and extends southward to the Texas border covering a 100-square-mile area. With the exception of some localized perturbations, the anomaly appears to decrease in temperature from the north to the south. Deeper drilling is required in the southern part of the anomaly to confirm the existence of commercially-exploitable geothermal waters.

  11. Renewed Volcano-Stratigraphc Studies of Calderas with Geothermal Potential in Mexico

    NASA Astrophysics Data System (ADS)

    Macias, J. L.; Arce, J. L.; García-Tenorio, F.; Layer, P. W.; Saucedo, R.; Castro, R.; Garduño, V. H.; Jimenez, A.; Pérez, H.; Valdez, G.; Meriggi, L.

    2014-12-01

    During the past six years we have carried out volcanologic fieldwork either in active geothermal fields in Mexico (Los Azufres, Tres Vírgenes, and Cerro Prieto) or in potential sites in which some geothermal exploration studied had been done by the National Power Company (CFE). These studies have been very successful in reassessing the location of the geothermal reservoirs within the volcanic successions through detailed mapping of the volcanic units using high resolution topography and satellite imagery to produce 3-D imagery in conjunction with field work to produce preliminary geologic maps. Detailed stratigraphy of volcanic units, assisted with 40Ar/39Ar and radiocarbon geochronology have redefined the evolution of some of these complexes. For example, our studies at Los Azufres geothermal field located in the State of Michoacán indicate that the volcanic complex of the same name sits upon a structural high transected by E-W faults related to the youngest structures of the Trans-Mexican Volcanic Belt. The volcanic complex has been emplaced during the past ~1.5 Ma. During this time, magmas evolved from basaltic to rhyolitic in composition with the emplacement of circa 100 vents. Several landforms have undergone intense hydrothermal alteration and, in some cases, generated debris avalanches. The revised stratigraphy based on drill holes and new dates of cores suggested that the geothermal reservoir is hosted in Miocene rocks bracketed between the Miocene Sierra de Mil Cumbres volcanics (17-22 Ma) and the products of the volcanic field itself. Similar studies will be carried out at four other Pleistocene calderas (Acoculco, La Primavera, Aguajito and Reforma) attempting to refine their volcanic stratigraphy, evolution, and the location of the geothermal system, and those results will help in the design of exploration strategies for geothermal sources.

  12. Implementing a Statewide Screening, Brief Intervention, and Referral to Treatment (SBIRT) Service in Rural Health Settings: New Mexico SBIRT

    ERIC Educational Resources Information Center

    Gonzales, Arturo; Westerberg, Verner S.; Peterson, Thomas R.; Moseley, Ana; Gryczynski, Jan; Mitchell, Shannon Gwin; Buff, Gary; Schwartz, Robert P.

    2012-01-01

    This is a report on the New Mexico Screening, Brief Intervention, and Referral to Treatment (SBIRT) project conducted over 5 years as part of a national initiative launched by the Substance Abuse and Mental Health Services Administration with the aim of increasing integration of substance use services and medical care. Throughout the state, 53,238…

  13. Mechanisms of arsenic enrichment in geothermal and petroleum reservoirs fluids in Mexico.

    PubMed

    Birkle, Peter; Bundschuh, Jochen; Sracek, Ondra

    2010-11-01

    The lack of chemical similarity between thermal fluids in geothermal and petroleum reservoirs in Mexico indicates a distinct origin for arsenic in both types of reservoirs. Deep fluids from geothermal reservoirs along the Transmexican Volcanic Belt (TMVB) are characterized by elevated arsenic concentrations, within a range between 1 and 100 mg L(-1) at a depth from 600 to 3000 m b.s.l. Based on hierarchical cluster analysis (HCA), arsenic is linked to typical geothermal species like lithium, silica, and boron. The lack of correlation between arsenic and salinity reflects the importance of secondary water-rock interaction processes. The predominance of arsenic compared to Fe- and Cu-concentrations, and the occurrence of secondary minerals (sulfides and clay minerals) in temperature-dependent hydrothermal zones, supports this hypothesis. Neither magmatic fluids input, nor As mineralization is a prerequisite for As enrichment in Mexican geothermal fluids. In contrast, petroleum reservoir waters from sedimentary basins in SE-Mexico show maximum As concentrations of 2 mg L(-1), at depths from 2900 to 6100 m b.s.l. The linear chloride-arsenic correlation indicates that evaporated seawater represents the major source for aqueous arsenic in oil reservoirs, and only minor arsenic proportions are derived from interaction with carbonate host rock. Speciation modeling suggests the lack of arsenic solubility control in both geothermal and petroleum reservoirs, but precipitation/co-precipitation of As with secondary sulfides could occur in petroleum reservoirs with high iron concentrations. Geothermal fluids from magmatic-type reservoirs (Los Azufres and Los Humeros at the TMVB and Las Tres Vírgenes with a granodioritic basement) show relative constant arsenic concentrations through varying temperature conditions, which indicates that temperatures above 230-250 °C provide optimal and stable conditions for arsenic mobility. In contrast, temperature conditions for sedimentary

  14. Geochemistry of igneous rocks from the Cerro Prieto geothermal field, northern Baja California, Mexico

    NASA Astrophysics Data System (ADS)

    Herzig, C. T.

    1990-08-01

    Fractional crystallization of basaltic magma, derived from an oceanic affinity source region present beneath the Salton Trough and emplaced into a pull-apart basin of this continental rift regime, produced a tholeiitic suite of hypabyssal rocks consisting of basalt, andesite and dacite within the Cerro Prieto geothermal field, located in northern Baja California, Mexico. Higher light-rare-earth-element abundances for a basalt from the Cerro Prieto geothermal field in comparison to basalts from the Gulf of California and the East Pacific Rise suggest partial assimilation of crustal materials into the parental magmas generated beneath the Salton Trough. The crustal contaminant may be present near the surface today in the form of granitoids of the Peninsular Ranges batholith, at deeper levels as hydrothermally altered materials near the base of the Salton Trough, or may be a relict feature of Tertiary subduction contained within the upper mantle beneath the Salton Trough. The Sr isotopic compositions of dacites from the nearby Cerro Prieto volcano range from 0.7029 to 0.7036, indicating an oceanic affinity source for these rocks. The suite of hypabyssal rocks of tholeiitic affinity present within the Cerro Prieto geothermal field, related by fractional crystallization, link the dacite volcano of Cerro Prieto to gabbroic plutons inferred to exist beneath the Cerro Prieto geothermal field.

  15. Evaluation of thermal remote sensing as a low-cost regional geothermal exploration technique in New Mexico. Final report

    SciTech Connect

    Inglis, M.; Budge, T.K.

    1985-03-01

    Airborne and satellite borne thermal infrared scanner data were analyzed for application in the exploration of geothermal resources in New Mexico. The location for this study was the East Mesa Geothermal Field near Las Cruces, New Mexico. Primary sensor was the Thermal Infrared Multispectral Scanner (TIMS) which obtained data at 10-meter resolution. Additional data for comparison came from the Heat Capacity Mapping Mission (HCMM) satellite which provided data at 600-meter resolution. These data were compared to the soils, vegetation, and geology of the area, as well as borehole temperature data in an attempt to explain temperature patterns and anomalies. Thermal infrared scanner data were found to be too sensitive to solar-induced temperature anomalies to directly reflect the presence of subsurface geothermal anomalies but may provide valuable supporting information for a geothermal exploration program. 15 refs., 16 figs., 3 tabs.

  16. Mercury in freshwater fish and clams from the Cerro Prieto geothermal field of Baja California, Mexico

    SciTech Connect

    Gutierrez-Galindo, E.A.; Munoz, G.F.; Flores, A.A.

    1988-08-01

    Several reports have expressed concern about the potential toxicity hazards and environmental contamination of mercury emissions from geothermal fields in Hawaii, New Zealand, Iceland, California and Mexico. Inorganic mercury discharged from the sources may accumulate in the sediments of rivers or lakes and, after microbiological methylation may become concentrated in the edible tissue of fish. This study involves assessment of geothermal mercury pollution arising from Cerro Prieto. For this purpose the fish Tilapia mossambica and the clam Corbicula fluminea were collected from the freshwater courses of the Mexicali Valley. Reports indicated that in 1982, 13 t of T. mossambica were destinated for human consumption. A further aim was to provide base line data and information relevant to the level of mercury contamination for the Mexicali Valley.

  17. Seismotectonics of the Cerro Prieto Geothermal Field, Baja California, Mexico.

    NASA Astrophysics Data System (ADS)

    Rebollar, C. J.; Reyes, L. M.; Quintanar, L.; Arellano, J. F.

    2002-12-01

    We studied the background seismic activity in the Cerro Prieto geothermal field (CPGF) using a network of 21 digital stations. Earthquakes are located below the exploitation area of the CPGF, between 3 and 12 km depth, within the basement. Earthquakes follow roughly a N30°E trend perpendicular to the Cerro Prieto fault. This activity is located on a horst-like structure below the geothermal field and coincides with the zone of maximum subsidence in the CPGF. Two earthquake swarms occurred along the SE-NW strike of the Cerro Prieto fault and in the neighborhood of the Cerro Prieto volcano. Magnitudes range from -0.3 to 2.5. A Vp/Vs=1.91 ratio of the activity below the volcano suggests a water-saturated medium and/or a partial-melt medium. We calculated 76 focal mechanisms of individual events. On June 1 and September 10, 1999, two earthquakes of Mw 5.2 and 5.3 occurred in the basement at depths of 7.4 and 3.8 km below the CPGF. Maximum peak accelerations above the hypocenter ranged from 128.0 to 432.0 cm/s2. Waveform modeling results in a fault geometries given by strike=236°, dip=60°, rake=-58° (normal) and strike=10°, dip=90°, rake=159° (right lateral strike-slip) for the June and September events. Observed triangular source time function of 0.7 seconds and a double source with a total duration of 1.9 seconds for the June and September events were used to calculate the synthetics seismograms. Static stress drops and seismic moments for the June and September events are: Δ\\sigma=82.5 MPa (825 bars), Mo= 7.65x1016 Nm (7.65x1023 dyne-cm) and Δ\\sigma=31.3 MPa (313 bars) and Mo=1.27x1017 Nm (1.27x1024 dyne-cm). These stress drops are typical of continental events rather than stress drops of events originated in spreading centers. We concluded from the focal mechanisms of the background seismicity and June and September 1999 events, that a complex stress environment exits in the CPGF due to the continual thinning of the crust in the Cerro Prieto basin.

  18. Annotated bibliography of the hydrology, geology, and geothermal resources of the Jemez Mountains and vicinity, north-central New Mexico

    USGS Publications Warehouse

    Abeyta, Cynthia G.; Delaney, B.M.

    1986-01-01

    The Jemez Mountains volcanic complex, located in north-central New Mexico at the intersection of the Rio Grande rift and Jemez lineament, is a potential location for geothermal energy exploration. This bibliography lists selected papers pertaining to the geology, hydrology, geochemistry, geothermometry, geophysics, ecology, and geothermal and hydrologic modeling aspects of the Jemez region. The bibliography is composed of 795 citations with annotations and a subject and author index. (USGS)

  19. Geothermal hydrology of Valles Caldera and the southwestern Jemez Mountains, New Mexico

    USGS Publications Warehouse

    Trainer, Frank W.; Rogers, Robert J.; Sorey, M.L.

    2000-01-01

    The Jemez Mountains in north-central New Mexico are volcanic in origin and have a large central caldera known as Valles Caldera. The mountains contain the Valles geothermal system, which was investigated during 1970-82 as a source of geothermal energy. This report describes the geothermal hydrology of the Jemez Mountains and presents results of an earlier 1972-75 U.S. Geological Survey study of the area in light of more recent information. Several distinct types of thermal and nonthermal ground water are recognized in the Jemez Mountains. Two types of near-surface thermal water are in the caldera: thermal meteoric water and acid sulfate water. The principal reservoir of geothermal fluids is at depth under the central and western parts of the caldera. Nonthermal ground water in Valles Caldera occurs in diverse perched aquifers and deeper valley-fill aquifers. The geothermal reservoir is recharged by meteorically derived water that moves downward from the aquifers in the caldera fill to depths of 6,500 feet or more and at temperatures reaching about 330 degrees Celsius. The heated geothermal water rises convectively to depths of 2,000 feet or less and mixes with other ground water as it flows away from the geothermal reservoir. A vapor zone containing steam, carbon dioxide, and other gases exists above parts of the liquid-dominated geothermal zone. Two subsystems are generally recognized within the larger geothermal system: the Redondo Creek subsystem and the Sulphur Creek subsystem. The permeability in the Redondo Creek subsystem is controlled by stratigraphy and fault-related structures. Most of the permeability is in the high-angle, normal faults and associated fractures that form the Redondo Creek Graben. Faults and related fractures control the flow of thermal fluids in the subsystem, which is bounded by high-angle faults. The Redondo Creek subsystem has been more extensively studied than other parts of the system. The Sulphur Springs subsystem is not as well

  20. Field Studies of Geothermal Reservoirs Rio Grande Rift, New Mexico

    SciTech Connect

    James C Witcher

    2002-07-30

    The Rio Grande rift provides an excellent field laboratory to study the nature of geothermal systems in an extensional environment. Much of the geologic complexity that is found in the Basin and Range is absent because the rift is located on cratonic crust with a thin and well-characterized Phanerozoic stratigraphy and tectonic history. On the other hand, the Neogene thermo-tectonic history of the rift has many parallels with the Basin and Range to the west. The geology of the southern Rio Grande rift is among the best characterized of any rift system in the world. Also, most geologic maps for the region are rather unique in that detailed analyses of Quaternary stratigraphic and surficial unit are added in concert with the details of bedrock geology. Pleistocene to Holocene entrenchment of the Rio Grande and tributaries unroofs the alteration signatures and permeability attributes of paleo outflow plumes and upflow zones, associated with present-day, but hidden or ''blind,'' hydrothermal systems at Rincon and San Diego Mountain.

  1. Preliminary plasma spectrometric analyses for selected elements in some geothermal waters from Cerro Prieto, Mexico

    USGS Publications Warehouse

    Ball, J.W.; Jenne, E.A.

    1983-01-01

    As part of a cooperative study with Dr. Alfred Truesdell, water samples collected from geothermal power production wells at Cerro Prieto, Mexico, were analyzed for selected elements by d.c. argon plasma emission spectroscopy. Spectral interferences due to the presence of high concentrations of Ca, Si, Na and K in these water affected the apparent concentration values obtained. These effects were evaluated and correction techniques were developed and applied to the analytical values. Precipitates present in the samples at the time of analysis adversely affected the accuracy, precision and interpretability of the data. (USGS)

  2. Geothermal Energy for New Mexico: Assessment of Potential and Exploratory Drilling

    SciTech Connect

    Mark Person, Lara Owens, James Witcher

    2010-02-17

    This report summarizes the drilling operations and subsequent interpretation of thermal and geochemical data from the New Mexico Tech NMT-2GT (OSE RG- 05276 POD) test well. This slim hole was drilled along an elongate heat-flow anomaly at the base of the Socorro Mountains to better assess the geothermal resource potential (Socorro Peak geothermal system) on the western side of the New Mexico Tech campus in Socorro, New Mexico. The reservoir depth, hydraulic properties, temperature and chemistry were unknown prior to drilling. The purpose of the NMT-2GT (OSE RG-05276 POD) well was to explore the feasibility of providing geothermal fluids for a proposed district space heating system on the New Mexico Tech campus. With DOE cost over runs funds we completed NMT-2GT to a depth of 1102 feet at the Woods Tunnel drill site. Temperatures were nearly constant (41 oC ) between a depth of 1102 feet. Above this isothermal zone, a strong temperature gradient was observed (210 oC /km) beneath the water table consistent with vertical convective heat transfer. The existence of a groundwater upflow zone was further supported by measured vertical hydraulic head measurements which varied between about 258 feet at the water table to 155 feet at a depth of 1102 feet yielding a vertical hydraulic a gradient of about 0.1. If the upflow zone is 1 km deep, then a vertical flow rate is about 0.6 m/yr could have produced the observed curvature in the thermal profile. This would suggest that the deep bedrock permeability is about 20 mD. This is much lower than the permeability measured in a specific capacity aquifer test completed in 2009 within fracture Paleozoic sandstones near the water table (3000 D). Flow rates measured during drilling were measured using a v-notch weir. Flow rates were consistently around 1000 gpm. While the temperatures are lower than we had anticipated, this geothermal resource can still be developed to heat the NM Tech campus using heat pump technology.

  3. Reservoir processes and fluid origins in the Baca geothermal system, Valles Caldera, New Mexico ( USA).

    USGS Publications Warehouse

    Truesdell, A.H.; Janik, C.J.

    1986-01-01

    At the Baca geothermal field in the Valles caldera, New Mexico, 19 deep wells were drilled in an attempt to develop a 50-MW (megawatts electric) power plant. The chemical and isotopic compositions of steam and water samples have been used to indicate uniquely the origin of reservoir fluids and natural reservoir processes. Two distinct reservoir fluids exist at Baca. These fluids originate from the same deep, high-temperature (335oC), saline (2500 mg/kg Cl) parent water but have had different histories during upflow which are described.-after Authors

  4. Active and Fossil Geothermal Activity at Lake Chapala, Mexico

    NASA Astrophysics Data System (ADS)

    Zârate-del Vall, P.

    2002-12-01

    Geothermal systems are very abundant in the tectonically active zones of the earth's crust and the Citala rift, where Lake Chapala is located, is not the exception. The Lake Chapala basin is characterized by its paleo- and actual geothermal activity that includes: thermal springs, fossil sinter deposits and hydrothermal petroleum manifestations. Thermal springs occur both inside and outside the lake. The spring water in out-shore thermal springs around Lake Chapala is carbonate (Medina-Heredia A, 1986). To the NE area is San Luis Agua Caliente (69°C; ~ 240 mg L-1 [HCO3]1) in the NW at Jocotepec (36°C; ~263mg L-1 [HCO3]-); in the South we find Tuxcueca and Tizap n El Alto (30°C; 193 mg L-1 [HCO3]-). However, there is an exception, the spring water at the San Juan Cosal sector (North), which is sulfate (64-83°C; ~479 mg L-1, [SO4]-2). Examples of in-shore thermal springs are "Los Gorgos" (near South shore) and "El Fuerte" (near East shore and temporary "out-shore" because of actual severe drought); the characterisation of water of this in-shore sites is in progress. On the SE shore and five km NW from Regules village, outcrops a carbonate deposit named "La Calera". This carbonate fossil sinter outcrops 2 km in E-W direction and 600 m in N-S direction and overlays andesitic rock. With a thickness of approximately 5m and a roughly horizontal attitude, the carbonated sinter material is characterized by both massive and banded structure. When massive, it is colored in yellow brownish and grey and elsewhere it shows a pseudo-brecciated structure and when banded, alternated of yellow and dark millimetre bands can be seen; is characterized by vuggy porosity and silica (quartz and chalcedony) vein lets. Under microscope a pseudo-micritic texture is observed; vugs coated by iron oxides, are filled with calcite, and/or quartz, chalcedony and clay minerals. Six samples of carbonate of "La Calera" deposit were analysed for their stable isotopes (LODC-UParis VI). From δ 13

  5. Geologic and preliminary reservoir data on the Los Humeros Geothermal System, Puebla, Mexico

    SciTech Connect

    Ferriz, H.

    1982-01-01

    Exploratory drilling has confirmed the existence of a geothermal system in the Los Humeros volcanic center, located 180 km east of Mexico City. Volcanic activity in the area began with the eruption of andesites, followed by two major caldera-forming pyroclastic eruptions. The younger Los Potreros caldera is nested inside the older Los Humeros caldera. At later stages, basaltic andesite, dacite, and olivine basalt lavas erupted along the ring-fracture zones of both calderas. Geologic interpretation of structural, geophysical, and drilling data suggests that: (1) the water-dominated geothermal reservoir is hosted by the earliest andesitic volcanic pile, is bounded by the ring-fracture zone of the Los Potreros caldera, and is capped by the products of the oldest caldera-forming eruption; (2) permeability within the andesitic pile is provided by faults and fractures related to intracaldera uplift; (3) the geothermal system has potential for a large influx of meteoric water through portions of the ring-fracture zones of both calderas; and (4) volcanic centers with similar magmatic and structural conditions can be found in the eastern Cascades, USA.

  6. Geochemical exploration of a promissory Enhanced Geothermal System (EGS): the Acoculco caldera, Mexico.

    NASA Astrophysics Data System (ADS)

    Peiffer, Loic; Romero, Ruben Bernard; Pérez-Zarate, Daniel; Guevara, Mirna; Santoyo Gutiérrez, Edgar

    2014-05-01

    The Acoculco caldera (Puebla, Mexico) has been identified by the Mexican Federal Electricity Company (in Spanish 'Comisión Federal de Electricidad', CFE) as a potential Enhanced Geothermal System (EGS) candidate. Two exploration wells were drilled and promising temperatures of ~300° C have been measured at a depth of 2000 m with a geothermal gradient of 11oC/100m, which is three times higher than the baseline gradient measured within the Trans-Mexican Volcanic Belt. As usually observed in Hot Dry Rock systems, thermal manifestations in surface are scarce and consist in low-temperature bubbling springs and soil degassing. The goals of this study were to identify the origin of these fluids, to estimate the soil degassing rate and to explore new areas for a future detailed exploration and drilling activities. Water and gas samples were collected for chemical and isotopic analysis (δ18O, δD, 3He/4He, 13C, 15N) and a multi-gas (CO2, CH4, H2S) soil survey was carried out using the accumulation chamber method. Springs' compositions indicate a meteoric origin and the dissolution of CO2 and H2S-rich gases, while gas compositions reveal a MORB-type origin mixed with some arc-type contribution. Gas geothermometry results are similar to temperatures measured during well drilling (260° C-300° C). Amongst all measured CO2 fluxes, only 5% (mean: 5543 g m-2 day-1) show typical geothermal values, while the remaining fluxes are low and correspond to biogenic degassing (mean: 18 g m-2 day-1). The low degassing rate of the geothermal system is a consequence of the intense hydrothermal alteration observed in the upper 800 m of the system which acts as an impermeable caprock. Highest measured CO2 fluxes (above > 600 g m-2 day-1) have corresponding CH4/CO2 flux ratios similar to mass ratios of sampled gases, which suggest an advective fluid transport. To represent field conditions, a numerical model was also applied to simulate the migration of CO2 towards the surface through a

  7. Magnetotelluric/audiomagnetotelluric study of the Zuni Hot Dry Rock Geothermal Prospect, New Mexico

    SciTech Connect

    Ander, M.E.; Goss, R.; Strangway, D.; Hillebrand, C.; Laughlin, A.W.; Hudson, C.

    1980-01-01

    The Los Alamos Scientific Laboratory has been investigating a large area in New Mexico for Hot Dry Rock geothermal potential. The area includes parts of the Jemez volcanic lineament and the central Rio Grande rift. LASL has completed a detailed magnetotelluric/audiomagnetotelluric survey covering 161 square km over an area of high heat flow, south of Zuni, NM. The data collection was collected and preliminary analysis phases of a regional MT survey which suggest the Jemez lineament is associated with a crustal structure of anomalously high electrical conductivity. The detailed MT shows an average tipper strike of N60/sup 0/E above 100 sec period, representing the structural trend within Precambrian basement. The Jemez lineament strikes approximately N55/sup 0/E; this suggests a relationship between the Precambrian structure beneath the Zuni area and the Jemez lineament.

  8. Water geochemistry of the Lucero Uplift, New Mexico: geothermal investigation of low-temperature mineralized fluids

    SciTech Connect

    Goff, F.; McCormick, T.; Gardner, J.N.; Trujillo, P.E.; Counce, D.; Vidale, R.; Charles, R.

    1983-04-01

    A detailed geochemical investigation of 27 waters of the Lucero uplift, central New Mexico, was performed to determine if the fluids originate from a high-temperature geothermal system along the Rio Grande rift. Two types of mineralized water issue from the Lucero region: a relatively saline (high-Cl, high-SO/sub 4/) type and a relatively dilute (low-Cl, high-SO/sub 4/) type. Emergence temperatures of both types range from 12 to 26/sup 0/C. Chemical data and thermodynamic and geothermometer calculations all indicate that both water types are in equilibrium with carbonate and evaporite minerals found in local Colorado Plateau rocks at surface temperatures or slightly higher. Stable isotope data do not indicate high-temperature rock-water interaction. Although evidence is seen for mixing between mineralized waters and dilute surface waters, no evidence for mixing of a deep hot fluid and surface waters is seen. Dilute mineral waters, which issue from a large area of Chinle Formation on the west side of the Lucero uplift, may be useful for low-temperature geothermal applications with appropriate design of equipment. Saline mineral waters, which leak from a zone of faulted and folded rocks along the Comanche fault zone, do not appear to have much, if any, geothermal potential due to their low-temperature, restricted distribution, and high concentration of dissolved solids. No evidence that saline mineral waters are associated with Quaternary faults of the Rio Grande rift or Quaternary basaltic volcanism within the immediate area is seen.

  9. Geothermal low-temperature reservoir assessment in northern Dona Ana County, New Mexico. Final report

    SciTech Connect

    Lohse, R.L.; Schoenmackers, R.

    1985-07-01

    Fifty-four shallow temperature gradient holes were drilled along Interstate Highway 25 and the Rio Grande, from Las Cruces to Rincon, in northern Dona Ana County, New Mexico. This shallow temperature study (a joint exploration program performed with the cooperation and financial assistance of Trans-Pacific Geothermal, Inc. of Oakland, California) resulted in the discovery and confirmation of new and suspected major low-temperature geothermal resources. Elevated temperature and heat flow data suggest a thermal anomaly which can be generally described as being a nearly continuous linear feature which extends some 25 miles in length in a northwest-southeast direction with the only break being a 5-mile gap near the southern end of the study area. The width of the anomaly is only a few miles but tends to thicken around individual anomalies located within this larger anomaly. There are five main individual anomalies situated within the major anomaly and, listed from north to south, they are the: (1) Rincon Anomaly, (2) San Diego Mountain Anomaly, (3) Radium Springs KGRA, (4) Grande Dome Anomaly, and (5) Goat Mountain Anomaly. The main anomaly is well defined by a 4 HFU contour and the individual anomalies range from about 10 HFU to a high of near 30 HFU, estimated for the Rincon Anomaly. A bottom-hole temperature of 54/sup 0/C at 50 meters was also recorded at Rincon. Deeper drilling is certainly warranted and required in the Rincon Anomaly in order to discover and confirm the true commercially exploitable potential of this geothermal resource. 12 refs., 9 figs., 3 tabs.

  10. Geothermal potential of West-Central New Mexico from geochemical and thermal gradient data

    SciTech Connect

    Levitte, D.; Gambill, D.T.

    1980-11-01

    To study the low temperature and Hot Dry Rock (HDR) geothermal potential of west-central New Mexico, 46 water samples were collected and geothermal gradient measurements were made in 29 wells. Water chemistry data indicate that all the samples collected are meteoric waters. High temperatures of samples taken from wells between Gallup and Tohatchi indicate these wells may derive water from a warm aquifer below the depth of the wells. The chemistries of the samples farther south on the Zuni Indian reservation suggest these waters are not circulating below 600 m of the surface. Geothermometry calculations support the conclusion that the waters sampled are meteoric. The geothermometry also indicates that the deep reservoir between Gallup and Tohatchi may be greater than 60/sup 0/C. Thermal gradient data indicate an area of high gradient on the Zuni Indian Reservation with a measured maximum of 67/sup 0/C/km between 181 m and 284 m. This high probably is not hydrologically controlled. The maximum gradients in the study area are 76/sup 0/C/km and 138/sup 0/C/km, measured just east of Springerville, Arizona. These gradients are undoubtedly controlled by circulating water, possibly heated by a magmatic source at depth and circulating back to the surface.

  11. Preliminary estimation of the reservoir capacity and the longevity of the Baca Geothermal Field, New Mexico

    SciTech Connect

    Bodvarsson, G.S.; Vonder Haar, S.; Wilt, M.; Tsang, C.F.

    1980-07-01

    A 50 MW geothermal power plant is currently under development at the Baca site in the Valles Caldera, New Mexico, as a joint venture of the Department of Energy (DOE), Union Oil Company of California, and the Public Service Company of New Mexico (PNM). To date, over 20 wells have been drilled on the prospect, and the data from these wells indicate the presence of a high-temperature liquid dominated reservoir. Data from open literature on the field are used to estimate the amount of hot water in place (reservoir capacity) and the length of time the reservoir can supply steam for a 50 MW power plant (reservoir longevity). The reservoir capacity is estimated by volumetric calculations using existing geological, geophysical, and well data. The criteria used are described and the sensitivity of the results discussed. The longevity of the field is studied using a two-phase numerical simulator (SHAFT79). A number of cases are studied based upon different boundary conditions, and injection and production criteria. Constant or variable mass production is employed in the simulations with closed, semi-infinite or infinite reservoir boundaries. In one of the cases, a fault zone feeding the production region is modeled. The injection strategy depends on the available waste water. The results of these simulations are discussed and the sensitivity of the results, with respect to mesh size and the relative permeability curves used, are briefly studied.

  12. Anomalously High Geothermal Gradients in the Buckman Well Field, Santa Fe County, New Mexico

    NASA Astrophysics Data System (ADS)

    Pollack, A.; Munda, R.; Farrell, T. F.; Kelley, S. A.; Frost, J.; Jiracek, G. R.

    2013-12-01

    . Sediment deformation as modeled in the upper 1 km could generate a local thermal transient and it would modify local thermal conductivity values with attendant changes in temperature gradients. Lastly, the anomaly may be of anthropogenic causes. The Buckman wells used to be the most extensively pumped wells in New Mexico. Discharge temperatures from the wells are high. One of the pumping wells has discharge temperatures of 26°C at only 116 meters depth (a geothermal gradient of 138 °C/km). Though the nearby wells were not pumping on the days of the temperature measurements, the geothermal anomaly may just be remnant heat from warmer waters previously pumped upwards.

  13. Hydrologic Windows and the Formation of Low-Temperature Geothermal Anomalies along the Rio Grande Rift, New Mexico

    NASA Astrophysics Data System (ADS)

    Pepin, J.; Person, M. A.; Kelley, S.; Timmons, S.; Owens, L.; Witcher, J. C.; Phillips, F. M.; Gable, C. W.; Coblentz, D. D.; Campbell, A.

    2013-12-01

    Within the Rio Grande Rift in New Mexico, gaps in Mesozoic and Tertiary confining units are common geologic features. They are created as a result of fault block rotation, erosion, lithological variations and emplacement of magmatic intrusions. These hydrologic windows were first proposed by Witcher (1988, Geothermal resources of southwestern New Mexico and southeastern Arizona: New Mexico Geological Society 39th Field Conference Guidebook, p. 191-197) as a mechanism to permit relatively hot geothermal fluids to discharge at the surface within the Rio Grande Rift. To explore the role of hydrologic windows in these occurrences, we have developed two-dimensional and three-dimensional hydrothermal models of both the Socorro and the Truth or Consequences geothermal resource areas. These finite-element models simulate groundwater flow, heat transfer, solute transport, and residence times. The 2D cross-sectional models help establish the depth of geothermal fluid circulation and crystalline-basement permeability structure required to account for hot-spring temperature conditions near the surface. The three-dimensional models help to assess the effects of water-table configuration and east-west oriented accommodation zones on shallow heat-flow patterns. We utilized carbon-14 groundwater age dating, salinity, and silica concentrations collected from wells and warm springs to calibrate these models. Apparent carbon-14 ages of groundwater samples collected from the 300-meter deep Woods Tunnel geothermal slim hole near Socorro and a 15-meter deep alluvial well from the Riverbend Spa in Truth or Consequences were 20,000 and 6,000 years old, respectively. Maximum geothermal temperatures based on silica concentrations at these two sites are estimated to range from 60 to 87 degrees Celsius. In order to reproduce observed temperature anomalies and groundwater residence times, groundwater circulation must have been within the crystalline basement, two to six kilometers beneath

  14. Vapliq hydrothermal systems, and the vertical permeability of Los Azufres, Mexico, geothermal reservoir

    SciTech Connect

    Iglesias, Eduardo R.; Arellano, Victor M.

    1988-01-01

    We identify a new category of natural hydrothermal systems intermediate between liquid- and vapor-dominated. This category is characterized by a “vapliq” vertical pressure profile, which is nearly vaporstatic in the shallower portion of the system, and nearly boiling-point-for-depth at depth. The prototype of these systems is the geothermal field of Los Azufres, Mexico. To explore the thermohydrological conditions conducent to this type of system, we propose a 1-D vertical scenario based on generally accepted conceptual models of liquid- and vapor-dominated geothermal reservoirs. We use the corresponding mass and thermal energy transport equations to establish that a necessary condition for the existence of 2-phase hydrothermal systems is that the absolute value of the vertical thermal flux must exceed Q{sub min}, a parameter that depends only on the values of the pressure and of the thermal conductivity at the boiling point of the system. The values of Q{sub min} are typically 1-4 times the average terrestrial flux. We also find that geothermal systems in which convective heat transport is accomplished by the well-known heat-pipe mechanism can exist only if the corresponding heat flux exceeds Q{sub min} and the permeability at the boiling point of the system is smaller than k{sub Bmax}, a parameter that depends only on the values of the pressure and of the thermal conductivity at the boiling point. Typical values of k{sub Bmax} are 1-3 {times} 10{sup -18} m{sup 2}, suggesting a reason for the fact that all vapor-dominated systems are associated with very-low matrix permeability formations. Applying these insights, and the mass and heat transport equations to Los Azufres, we conclude that a contrast of 1-3 orders of magnitude exists between the vertical permeability at the boiling point and that corresponding to the vapor-dominated portion of the system. We propose that similar permeability contrasts may be responsible for the characteristic composite pressure

  15. An updated conceptual model of the Los Humeros geothermal reservoir (Mexico)

    NASA Astrophysics Data System (ADS)

    Arellano, V. M.; García, A.; Barragán, R. M.; Izquierdo, G.; Aragón, A.; Nieva, D.

    2003-05-01

    An analysis of production and reservoir engineering data of 42 wells from the Los Humeros geothermal field (Mexico) allowed obtaining the pressure and temperature profiles for the unperturbed reservoir fluids and developing 1-D and 2-D models for the reservoir. Results showed the existence of at least two reservoirs in the system: a relatively shallow liquid-dominant reservoir located between 1025 and 1600 m above sea level (a.s.l.) the pressure profile of which corresponds to a 300-330°C boiling water column and a deeper low-liquid-saturation reservoir located between 850 and 100 m a.s.l. with temperatures between 300 and 400°C. Both reservoirs seem to be separated by a vitreous tuff lithological unit, but hydraulic connectivity occurs through faults and fractures of the system, allowing deep steam to ascend while condensate flows down (porous heat pipe). The geochemical and isotopic (δ 18O, δD) composition of the produced fluids can be explained as the result of a boiling process with reservoir steam separation and partial condensation, a fact that agrees with the proposed reservoir engineering model.

  16. A GEOLOGICAL AND GEOPHYSICAL STUDY OF THE BACA GEOTHERMAL FIELD, VALLES CALDERA, NEW MEXICO

    SciTech Connect

    Wilt, M.; Haar, S.V.

    1982-03-01

    The Baca location {number_sign}1 geothermal field is located in north-central New Mexico within the western half of the Plio-Pleistocene valles Caldera. Steam and hot water are produced primarily from the northeast-trending Redondo Creek graben, where downhole temperatures exceed 500 F. Stratigraphically the reservoir region can be described as a five-layer sequence that includes (1) caldera fill and the upper units of the Bandelier ash flow tuff, (2) the lower members of this tuff, which comprise the main reservoir rock at Baca, (3) the Pliocene Paliza Canyon volcanics, (4) Tertiary sands and Paleozoic sedimentary rocks, and (5) Precambrian granitic basement. Production is controlled by fractures and faults that are ultimately related to activity in the Rio Grande Rift system. Geophysically, the caldera is characterized by a gravity minimum and a resistivity low. A 40-mgal gravity minimum over the caldera is due mostly to the relatively low-density volcanics and sediments that fill the caldera and probably bears no relation to deep-seated magmatic sources. Two-dimensional gravity modeling indicates that the depth to Precambrian basement in Redondo Canyon is probably at least 3 km and may exceed 5 km in eastern parts of the caldera. Telluric and magnetotelluric surveys have shown that the reservoir region is associated with low resistivity and that a deep low-resistivity zone correlates well with the depth of the primary reservoir inferred from well data.

  17. Naturally occurring heavy radioactive elements in the geothermal microcosm of the Los Azufres (Mexico) volcanic complex.

    PubMed

    Abuhani, W A; Dasgupta-Schubert, N; Villaseñor, L M; García Avila, D; Suárez, L; Johnston, C; Borjas, S E; Alexander, S A; Landsberger, S; Suárez, M C

    2015-01-01

    The Los Azufres geothermal complex of central Mexico is characterized by fumaroles and boiling hot-springs. The fumaroles form habitats for extremophilic mosses and ferns. Physico-chemical measurements of two relatively pristine fumarolic microcosms point to their resemblance with the paleo-environment of earth during the Ordovician and Devonian periods. These geothermal habitats were analysed for the distribution of elemental mass fractions in the rhizospheric soil (RS), the native volcanic substrate (VS) and the sediments (S), using the new high-sensitivity technique of polarized x-ray energy dispersive fluorescence spectrometry (PEDXRF) as well as instrumental neutron activation analysis (INAA) for selected elements. This work presents the results for the naturally occurring heavy radioactive elements (NOHRE) Bi, Th and U but principally the latter two. For the RS, the density was found to be the least and the total organic matter content the most. Bi was found to be negligibly present in all substrate types. The average Th and U mass fractions in the RS were higher than in the VS and about equal to their average mass fractions in the S. The VS mass fraction of Th was higher, and of U lower, than the mass fractions in the earth's crust. In fact for the fumaroles of one site, the average RS mass fractions of these elements were higher than the averaged values for S (without considering the statistical dispersion). The immobilization of the NOHRE in the RS is brought about by the bio-geochemical processes specific to these extremophiles. Its effectiveness is such that despite the small masses of these plants, it compares with, or may sometimes exceed, the immobilization of the NOHRE in the S by the abiotic and aggressive chemical action of the hot-springs. These results indicate that the fumarolic plants are able to transform the volcanic substrate to soil and to affect the NOHRE mass fractions even though these elements are not plant nutrients. Mirrored back to

  18. Naturally occurring heavy radioactive elements in the geothermal microcosm of the Los Azufres (Mexico) volcanic complex.

    PubMed

    Abuhani, W A; Dasgupta-Schubert, N; Villaseñor, L M; García Avila, D; Suárez, L; Johnston, C; Borjas, S E; Alexander, S A; Landsberger, S; Suárez, M C

    2015-01-01

    The Los Azufres geothermal complex of central Mexico is characterized by fumaroles and boiling hot-springs. The fumaroles form habitats for extremophilic mosses and ferns. Physico-chemical measurements of two relatively pristine fumarolic microcosms point to their resemblance with the paleo-environment of earth during the Ordovician and Devonian periods. These geothermal habitats were analysed for the distribution of elemental mass fractions in the rhizospheric soil (RS), the native volcanic substrate (VS) and the sediments (S), using the new high-sensitivity technique of polarized x-ray energy dispersive fluorescence spectrometry (PEDXRF) as well as instrumental neutron activation analysis (INAA) for selected elements. This work presents the results for the naturally occurring heavy radioactive elements (NOHRE) Bi, Th and U but principally the latter two. For the RS, the density was found to be the least and the total organic matter content the most. Bi was found to be negligibly present in all substrate types. The average Th and U mass fractions in the RS were higher than in the VS and about equal to their average mass fractions in the S. The VS mass fraction of Th was higher, and of U lower, than the mass fractions in the earth's crust. In fact for the fumaroles of one site, the average RS mass fractions of these elements were higher than the averaged values for S (without considering the statistical dispersion). The immobilization of the NOHRE in the RS is brought about by the bio-geochemical processes specific to these extremophiles. Its effectiveness is such that despite the small masses of these plants, it compares with, or may sometimes exceed, the immobilization of the NOHRE in the S by the abiotic and aggressive chemical action of the hot-springs. These results indicate that the fumarolic plants are able to transform the volcanic substrate to soil and to affect the NOHRE mass fractions even though these elements are not plant nutrients. Mirrored back to

  19. Geothermal data for 95 thermal and nonthermal waters of the Valles Caldera - southern Jemez Mountains region, New Mexico

    SciTech Connect

    Goff, F.; McCormick, Trujillo, P.E. Jr.; Counce, D.; Grigsby, C.O.

    1982-05-01

    Field, chemical, and isotopic data for 95 thermal and nonthermal waters of the southern Jemez Mountains, New Mexico are presented. This region includes all thermal and mineral waters associated with Valles Caldera and many of those located near the Nacimiento Uplift, near San Ysidro. Waters of the region can be categorized into five general types: (1) surface and near surface meteoric waters; (2) acid-sulfate waters (Valles Caldera); (3) thermal meteoric waters (Valles Caldera); (4) deep geothermal and derivative waters (Valles Caldera); and (5) mineralized waters near San Ysidro. Some waters display chemical and isotopic characteristics intermediate between the types listed. The object of the data is to help interpret geothermal potential of the Jemez Mountains region and to provide background data for investigating problems in hydrology, structural geology, hydrothermal alterations, and hydrothermal solution chemistry.

  20. Geophysical Investigations to Assess Geothermal Energy Potential, Socorro Peak, New Mexico

    NASA Astrophysics Data System (ADS)

    Tobin, H. J.; Baars, R. M.; Norman, D.; Owens, L.; Cumming, W.

    2005-12-01

    The Socorro Peak uplift in central New Mexico has long been known to host a strongly localized heat flow anomaly. Shallow thermal gradient wells show heat flows as high as 490 mW/m2 at depths to ~100 m, superimposed on background values of 60-80 mW/m2. Warm springs at the south end of the mountain block produce water of ~ 35 C, and show chemical evidence of thermal water highly diluted by shallow groundwater. Recently, interest has grown in assessing the potential for direct use of these thermal waters for space heating of buildings on the New Mexico Institute of Mining and Technology campus. We have therefore undertaken multidisciplinary exploration efforts in order to better understand the structure and hydrogeology of the hydrothermal system, and to site a planned 1000 m exploratory well. In particular, we have collected high-resolution magnetotelluric profile data at 100 m station spacing to characterize the near surface distribution of conductivity across the range bounding fault on the east side of the Socorro Peak uplift, where the geothermal gradients are highest. Two dimensional inversions of the data, constrained by known local geology, show that a single fault, corresponding to the mapped main fault, is the locus of major displacement for at least the upper 1000 m, juxtaposing footwall preCambrian and Paleozoic rocks and Tertiary volcaniclastics against hanging wall alluvial sediments of the Rio Grande Rift. We tentatively identify an imaged conductive zone at depths of 400 m or more below surface east of the fault as a regional aquitard separating the shallow groundwater from underlying possible hydrothermal systems, structurally juxtaposed with a moderately resistive block in the footwall. A synthesis of geophysical and geologic evidence for the architecture of this hydrothermal system places these units in fault contact at a strongly fractured intersection of the Socorro Canyon fault with the older ring fracture of the Socorro caldera, accompanied by

  1. Seismic and Gravity Investigations of the Caja del Rio Geothermal Area, New Mexico

    NASA Astrophysics Data System (ADS)

    Braile, L. W.; Burke, B.; Butler, E.; Harper, C.; Livermore, J.; McGlannan, A.; Wasik, A.; Baldridge, W. S.; Biehler, S.; Ferguson, J. F.; McPhee, D. K.; Snelson, C. M.; Sussman, A. J.

    2012-12-01

    The SAGE (Summer of Applied Geophysical Experience) program collected new seismic and gravity data in 2012 in the Caja del Rio area of northern New Mexico. The area, about 25 km NW of Santa Fe, has been identified as a potential geothermal resources area based on relatively high temperature gradients in drill holes. The SAGE 2012 data collection was part of an integrated geophysical study of the area initiated in 2011. Seismic data consisted of a 6.4 km SE to NW profile (80 three-component stations, 20 m station spacing, using a Vibroseis source - 20 m spacing for reflection VPs; 800 m spacing for refraction VPs) with both refraction and CMP reflection coverage. The surface conditions (dry unconsolidated cover over a thin volcanic layer) increased surface wave energy and limited the signal-to-noise level of the refraction and reflection arrivals. The refraction data were modeled with first arrival travel time methods. The reflection data were processed to produce a CMP stacked record section. Strong, NW-dipping reflectors, interpreted as from the Espinaso formation, are visible at about 1.4 seconds two-way time. One hundred and sixty-four new gravity measurements (detailed data at 500 m spacing along the seismic profile and regional stations) were collected and combined with existing regional data for modeling. Interpretation of the seismic and gravity data was aided by refraction velocities, the existence of a nearby regional seismic reflection profile from industry, and lithologies and well-logs from a deep well. The sedimentary basin interpreted from the seismic and gravity data, along with existing geological and geophysical information, consists of a thick section of Tertiary rift fill (capped by a thin layer of volcanic rocks), over Mesozoic and Paleozoic rocks, with a total basin thickness of about 3 km.

  2. Direct application of geothermal energy at the L'eggs Product Plant, Las Cruces, New Mexico. Final report

    SciTech Connect

    Not Available

    1981-02-01

    The study program to determine the feasibility of interfacing a potential geothermal resource of Dona Ana County, New Mexico L'eggs Product industrial process is discussed in this final report. Five separate sites were evaluated initially as to geothermal potential and technical feasibility. Preliminary analysis revealed that three sites were considered normal, but that two sites (about three miles from the L'eggs Plant) had very high shallow subsurface temperature gradients (up to 14.85/sup 0/F/100 ft). An initial engineering analysis showed that to meet the L'eggs plant temperature and energy requirements a geothermal fluid temperature of about 250/sup 0/F and 200 gpm flow rate would be necessary. A brief economic comparison indicated that the L'eggs plant site and a geothermal site approximately four miles from the plant did merit further investigation. Detailed engineering and economic design and analysis of these two sites (including the drilling of an 1873 feet deep temperature gradient test hole at the L'eggs Plant) showed that development of the four mile distant site was technically feasible and was the more economic option. It was determined that a single-stage flash system interface design would be most appropriate for the L'eggs Plant. Approximately 39 billion Btu/yr of fossil fuel could be replaced with geothermal energy at the L'eggs facility for a total installed system cost of slightly over $2 million. The projected economic payback period was calculated to be 9.2 years before taxes. This payback was not considered acceptable by L'eggs Products, Inc., to merit additional design or construction work at this time.

  3. The structural architecture of the Los Humeros volcanic complex and geothermal field, Trans-Mexican Volcanic Belt, Central Mexico

    NASA Astrophysics Data System (ADS)

    Norini, Gianluca; Groppelli, Gianluca; Sulpizio, Roberto; Carrasco Núñez, Gerardo; Davila Harris, Pablo

    2014-05-01

    The development of geothermal energy in Mexico is a very important goal, given the presence of a large heat anomaly, associated with the Trans-Mexican Volcanic Belt, the renewability of the resource and the low environmental impact. The Quaternary Los Humeros volcanic complex is an important geothermal target, whose evolution involved at least two caldera events, that alternated with other explosive and effusive activity. The first caldera forming event was the 460 ka eruption that produced the Xaltipan ignimbrite and formed a 15-20 km wide caldera. The second collapse event occurred 100 ka with the formation of the Zaragoza ignimbrite and a nested 8-10 km wide caldera. The whole volcano structure, the style of the collapses and the exact location of the calderas scarps and ring faults are still a matter of debate. The Los Humeros volcano hosts the productive Los Humeros Geothermal Field, with an installed capacity of 40 MW and additional 75 MW power plants under construction. Recent models of the geothermal reservoir predict the existence of at least two reservoirs in the geothermal system, separated by impermeable rock units. Hydraulic connectivity and hydrothermal fluids circulation occurs through faults and fractures, allowing deep steam to ascend while condensate flows descend. As a consequence, the plans for the exploration and exploitation of the geothermal reservoir have been based on the identification of the main channels for the circulation of hydrothermal fluids, constituted by faults, so that the full comprehension of the structural architecture of the caldera is crucial to improve the efficiency and minimize the costs of the geothermal field operation. In this study, we present an analysis of the Los Humeros volcanic complex focused on the Quaternary tectonic and volcanotectonics features, like fault scarps and aligned/elongated monogenetic volcanic centres. Morphostructural analysis and field mapping reveal the geometry, kinematics and dynamics of

  4. Magnetotelluric Phase Tensor Applications to Geothermal Assessment in New Zealand and New Mexico

    NASA Astrophysics Data System (ADS)

    Jiracek, G. R.; Feucht, D. W.; Brown, D.; Castro, B.; Chang, J.; Goff, D.; Hardwick, C.; Hollingshaus, B.; Bowles-martinez, E.; Nakai, J.; Wilson, C.; Bertrand, E. A.; Bennie, S.; Caldwell, G.; Hill, G. J.; Wallin, E.; Bedrosian, P. A.; Hasterok, D. P.; Pellerin, L.

    2012-12-01

    Magnetotelluric (MT) phase tensor analysis preserves the background (regional) phase response irrespective of galvanic distortion even if distorting inhomogeneities change between multiple MT deployments. This characteristic is the basis for repeat MT monitoring of the South Karapiti, New Zealand region near the Wairakei Power Station where 1-2 km-deep reinjection of spent geothermal fluids will commence soon. Deep electrical conductivity changes caused by this injection may be detected by background phase tensor changes independent of possible surficial changes, e.g., from drilling operations, or from differing sensor alignments during the multi-MT occupations. In 2010-2012 twenty MT sites within 1.5 km of a newly-drilled injection well were reoccupied by New Zealand GNS scientists and US students from NSF's International Research Experiences for Students program. Maps of phase tensor ellipses at various frequencies have identified frequency bands exhibiting good repeatability, therefore, they are potentially useful for detection of future brine injection. Final reoccupation of the MT sites is scheduled in 2013 after a large brine injection. In New Mexico, the 2012 SAGE program (Summer of Applied Geophysical Experience) applied phase tensor analysis to 8 MT soundings aimed at understanding the occurrence of anomalously high vertical and horizontal temperature gradients located approximately 25 km NW of Santa Fe. Plots of phase tensor ellipses allowed unique, distortion-free visualization of the dimensionality and directions of background geoelectric variations. Analysis of the plots as functions of frequency and location revealed a nearly one-dimensional (1-D) upper conductive (sedimentary) section. Variations in the orientations of the principal axes of phase tensor ellipses exposed an overall, deeper three-dimensional (3-D) geoelectric structure in the region. However, two sequential frequency bands revealed dominantly two-dimensional (2-D) regional features

  5. Lightning dock geothermal space heating project, Lightning Dock KGRA, New Mexico. Final report

    SciTech Connect

    McCants, T.W.

    1980-12-01

    The proposed project was to take the existing geothermal greenhouse and home heating systems, which consisted of pumping geothermal water and steam through passive steam heaters, and convert the systems to one using modern heat exchange units. It was proposed to complete the existing unfinished, re-inforced glass side wall, wood framed structure, as a nursery lath house, the purpose of which would be to use geothermal water in implementing university concepts on the advantages of bottom heat to establish hardy root systems in nursery and bedding plants. The use of this framework was abandoned in favor of erecting new structures for the proposed purpose. The final project of the proposal was the establishment of a drip irrigation system, to an area just west of the existing greenhouse and within feet of the geothermal well. Through this drip irrigation system geothermal water would be pumped, to prevent killing spring frosts. The purpose of this area of the proposal is to increase the potential use of existing geothermal waters of the Lightning Dock KGRA, in opening a new geothermal agri-industry which is economically feasible for the area and would be extremely energy efficient.

  6. Geologic map of the Sulphur Springs Area, Valles Caldera Geothermal System, New Mexico

    SciTech Connect

    Goff, F.E.; Gardner, J.N.

    1980-12-01

    The geologic and tectonic setting and geology of Sulphur Springs Area are described. Geologic faults, sheared or brecciated rock, volcanic vents, geothermal wells, hydrothermal alteration, springs, thermal springs, fumaroles, and geologic deposits are indicated on the map. (MHR)

  7. Photogeologic and thermal infrared reconnaissance surveys of the Los Negritos-Ixtlan de los Hervores geothermal area, Michoacan, Mexico

    USGS Publications Warehouse

    Gomez, Valle R.; Friedman, J.D.; Gawarecki, S.J.; Banwell, C.J.

    1970-01-01

    New techniques, involving interpretation of panchromatic, ektachrome and ektachrome infrared aerographic photogaphs and thermographic infrared imagery recording emission from the earth's surface in middle and far infrared wavelengths (3-5??m and 8-14??m), are being introduced in geothermal investigations in Mexico to identify outstanding structural and geologic features in a rapid and economical manner. The object of this work is to evaluate the new airborne infrared techniques and equipment as a complement to the data obtained from panchromatic aerial photography. This project is part of the Mexican remote sensing program of natural resources carried out under the auspices of the Comision Nacional del Espacio Exterior and in which the Research Institute (Instituto de Investigaciones de la Industria Electrica) is actively participating. The present study was made cooperatively with the U.S. National Aeronautics and Space Administration and the U.S. Geological Survey. The Los Negritos-Ixtlan de los Hervores geothermal fields are located east of Lake Chapala at the intersection of the Sierra Madre occidental and the west-central segment of the neovolcanic axis of Mexico. The two principal zones of hydrothermal activity occur in a tectonic trench filled with lake sediments of the Quaternary intercalated with Quaternary and Holocene volcanic rocks and characterized by an intricate system of block-fault tectonics, part of the Chapala-Acambay tectonic system, along which there has been volcanic activity in modern time. Surface manifestations of geothermal activity consist of relatively high heat flow and hot springs, small geysers and small steam vents aligned along an E-W axis at Ixtlan, possibly at the intersection of major fault trends and mud volcanoes and hot pools aligned NE-SW at Los Negritos. More than 20 exit points of thermal waters are shown on infrared imagery to be aligned along an extension of the Ixtlan fault between Ixtlan and El Salitre. A narrow zone of

  8. Handbook: Statewide Student Assessment System. Information for Parents, Students, Teachers, and Other School Personnel.

    ERIC Educational Resources Information Center

    Rael, Patricia S.; Travelstead, Jim

    This document provides basic information about the Statewide Student Assessment System in New Mexico. There are four components of the Statewide Student Assessment System that are guided by the State Department of Education. Each component serves a specific purpose and targets specific grade levels. The purpose of the reading assessment of grades…

  9. Session 10: The Cerro Prieto Geothermal Field, Mexico: The Experiences Gained from Its Exploration and Development

    SciTech Connect

    Lippman, M.J.; Goldstein, N.E.; Halfman, S.E.; Witherspoon, P.A.

    1983-12-01

    The Cerro Prieto case study demonstrated the value of a multidisciplinary effort for exploring and developing a geothermal field. There was no problem in recognizing the geothermal potential of the Cerro Prieto area because of the many obvious surface manifestations. However, the delineation of the geothermal reservoir at depth was not so straightforward. Wells drilled near the abundant surface manifestations only produced fluids of relatively low enthalpy. Later it was determined that these zones of high heat loss corresponded to discharge areas where faults and fractures allowed thermal fluids to leak to the surface, and not to the main geothermal reservoir. The early gravity and seismic refraction surveys provided important information on the general structure of the area. Unaware of the existence of a higher density zone of hydrothermally altered sediments capping the geothermal reservoir, CFE interpreted a basement horst in the western part of the field and hypothesized that the bounding faults were controlling the upward flow of thermal fluids. Attempting to penetrate the sedimentary column to reach the ''basement horst'', CFE discovered the {alpha} geothermal reservoir (in well M-5). The continuation of the geothermal aquifer (actually the {beta} reservoir) east of the original well field was later confirmed by a deep exploration well (M-53). The experience of Cerro Prieto showed the importance of chemical ratios, and geothermometers in general, in establishing the subsurface temperatures and fluid flow patterns. Fluid chemical and isotopic compositions have also been helpful to determine the origin of the fluids, fluid-production mechanisms and production induced effects on the reservoir.

  10. Engineering and economic evaluation of direct hot-water geothermal energy applications on the University of New Mexico campus. Final technical report

    SciTech Connect

    Kauffman, D.; Houghton, A.V.

    1980-12-31

    The potential engineering and economic feasibility of low-temperature geothermal energy applications on the campus of the University of New Mexico is studied in detail. This report includes three phases of work: data acquisition and evaluation, system synthesis, and system refinement and implementation. Detailed process designs are presented for a system using 190/sup 0/F geothermal water to substitute for the use of 135 x 10/sup 9/ Btu/y (141 TJ/y) of fossil fuels to provide space and domestic hot water heating for approximately 23% of the campus. Specific areas covered in the report include economic evaluation, environmental impact and program implementation plans.

  11. Mexico.

    ERIC Educational Resources Information Center

    Semaan, Leslie

    The text explores Mexico's history, geography, art, religion, and lifestyles in the context of its complex economy. The text focuses on Mexico's economy and reasons for its current situation. Part I of this teaching unit includes: Teacher Overview, Why Study Mexico, Mexico Fact Sheet, Map of Mexico, the Land and Climate, History, Government,…

  12. Deep Production Well for Geothermal Direct-Use Heating of A Large Commercial Greenhouse, Radium Springs, Rio Grande Rift, New Mexico

    SciTech Connect

    James C. Witcher

    2002-01-02

    Expansion of a large commercial geothermally-heated greenhouse is underway and requires additional geothermal fluid production. This report discusses the results of a cost-shared U.S. Department of Energy (DOE) and A.R. Masson, Inc. drilling project designed to construct a highly productive geothermal production well for expansion of the large commercial greenhouse at Radium Springs. The well should eliminate the potential for future thermal breakthrough from existing injection wells and the inducement of inflow from shallow cold water aquifers by geothermal production drawdown in the shallow reservoir. An 800 feet deep production well, Masson 36, was drilled on a US Bureau of Land Management (BLM) Geothermal Lease NM-3479 at Radium Springs adjacent to the A. R. Masson Radium Springs Farm commercial greenhouse 15 miles north of Las Cruces in Dona Ana County, New Mexico just west of Interstate 25 near the east bank of the Rio Grande. The area is in the Rio Grande rift, a tectonically-active region with high heat flow, and is one of the major geothermal provinces in the western United State.

  13. Assessing the process of designing and implementing electronic health records in a statewide public health system: the case of Colima, Mexico

    PubMed Central

    Hernández-Ávila, Juan Eugenio; Palacio-Mejía, Lina Sofia; Lara-Esqueda, Agustín; Silvestre, Eva; Agudelo-Botero, Marcela; Diana, Mark L; Hotchkiss, David R; Plaza, Beatriz; Sanchez Parbul, Alicia

    2013-01-01

    The findings of a case study assessing the design and implementation of an electronic health record (EHR) in the public health system of Colima, Mexico, its perceived benefits and limitations, and recommendations for improving the implementation process are presented. In-depth interviews and focus group discussions were used to examine the experience of the actors and stakeholders participating in the design and implementation of EHRs. Results indicate that the main driving force behind the use of EHRs was to improve reporting to the two of the main government health and social development programs. Significant challenges to the success of the EHR include resistance by physicians to use the ICD-10 to code diagnoses, insufficient attention to recurrent resources needed to maintain the system, and pressure from federal programs to establish parallel information systems. Operating funds and more importantly political commitment are required to ensure sustainability of the EHRs in Colimaima. PMID:23019239

  14. Hydro-geochemical and isotopic fluid evolution of the Los Azufres caldera geothermal field, Central Mexico

    NASA Astrophysics Data System (ADS)

    González-Partida, E.; Viggiano-Guerra, J. C.; Pérez, R. J.

    2008-10-01

    Hydrothermal alteration at Los Azufres geothermal held is mostly propylitic showing progressive dehydration with depth, and temperature increase. The evolution of this system is inferred to be related to deep liquid water, boiling when ascending through fractures connected to the surface.

  15. Initial Measurements of Petrophysical Properties on Rocks from the Los Azufres, Mexico, Geothermal Field

    SciTech Connect

    Contreras, E.; Iglesias, E.; Razo, E.

    1986-01-21

    Petrophysical properties of geothermal reservoir rocks are valuable information for many activities, including reservoir characterization, modeling, field test analysis and planning of exploitation techniques. Petrophysical data of rocks from geothermal reservoirs located in volcanic areas is in general very scarce. In particular, no petrophysical data of rocks from the Los Azufres geothermal field area has ever been published. This work presents the results of initial petrophysical studies on outcrop rocks and drill core samples from the Los Azufres geothermal field. These studies are the first part of an ongoing experimental program intended to establish a data-base about physical properties of the Los Azufres rocks, in support of the many reservoir engineering activities which require of such information. The experimental work carried out consisted of laboratory measurements of density, porosity, permeability, compressibility, thermal conductivity, thermal expansion, electrical resistivity and sonic wave velocities. Some of the experiments were aimed at investigation of the effects of temperature, pressure, saturation and other parameters on the physical properties of rocks.

  16. Summary of recent progress in understanding the Cerro Prieto Geothermal Field, Baja, California, Mexico

    SciTech Connect

    Lippmann, M.J.; Witherspoon, P.A.

    1980-07-01

    Geological and geophysical studies indicate that the Cerro Prieto reservoir is quite heterogeneous due to complex lithofacies fault structures, and hydrothermal alteration. Geochemical investigations have provided clues on the origin of the geothermal fluids, their recharge paths and on the reservoir processes accompanying the exploitation of the field. Well tests have yielded information on the permeability of the reservoir. (MHR)

  17. Thermal history of the Acoculco geothermal system, eastern Mexico: Insights from numerical modeling and radiocarbon dating

    NASA Astrophysics Data System (ADS)

    Canet, Carles; Trillaud, Frederic; Prol-Ledesma, Rosa María; González-Hernández, Galia; Peláez, Berenice; Hernández-Cruz, Berenice; Sánchez-Córdova, María M.

    2015-10-01

    Acoculco is a geothermal prospective area hosted by a volcanic caldera complex in the eastern Trans-Mexican Volcanic Belt. Surface manifestations are scarce and consist of gas discharges (CO2-rich) and acid-sulfate springs of low temperature, whereas hydrothermal explosive activity is profusely manifested by meter-scale craters and mounds of hydrothermal debris and breccias. Silicic alteration extends for several square kilometers around the zone with gas manifestations and explosive features, affecting surficial volcanic rocks, primarily tuffs and breccias. In the subsurface, an argillic alteration zone (ammonium illite) extends down to a depth of ∼ 600 m, and underneath it a propylitic zone (epidote-calcite-chlorite) occurs down to ∼ 1000 m. Thermal logs from an exploratory borehole (EAC-1, drilled in 1995 down to 1810 m) showed a conductive heat transfer regime under high geothermal gradient (∼ 140 °C/1000 m). In contrast, the thermal profile established from temperatures of homogenization of fluid inclusions-measured on core samples from the same drill hole-suggests that convection occurred in the past through the upper ~ 1400 m of the geothermal system. A drop in permeability due to the precipitation of alteration minerals would have triggered the cessation of the convective heat transfer regime to give place to a conductive one. With the purpose of determining when the transition of heat transfer regime occurred, we developed a 1D model that simulates the time-depth distribution of temperature. According to our numerical simulations, this transition happened ca. 7000 years ago; this date is very recent compared to the lifespan of the geothermal system. In addition, radiocarbon chronology indicates that the hydrothermal explosive activity postdates the end of the convective heat transfer regime, having dated at least three explosive events, at 4867-5295, 1049-1417 and 543-709 y cal. BP. Therefore, hydrothermal explosions arise from the self-sealing of

  18. New Mexico handbook for geothermal resource development state and local government regulations

    SciTech Connect

    Not Available

    1980-07-01

    The regulatory aspects of a wide range of potential projects and sequences within the projects are covered, such as: exploration, demonstration, construction, commercialization, and operation. Such topics as environmental studies, water rights, district heating, taxation archaeological clearances, and construction permits are addressed. Other general information is provided which may assist a prospective geothermal developer in understanding which state and local agencies have review responsibilities, their review procedures, and the appropriate time frame necessary to complete their review process. (MHR)

  19. Origin of rainwater acidity near the Los Azufres geothermal field, Mexico

    USGS Publications Warehouse

    Verma, M.P.; Quijano, J.L.; Johnson, Chad; Gerardo, J.Y.; Arellano, V.

    2000-01-01

    The chemical and isotopic compositions of rainwater were monitored at Los Azufres geothermal field (88 MWe) and its surroundings during May - September 1995, which is the rainy season. Samples were collected from eight sites: three within the field, three in its surroundings and two sufficiently far from the field such that they have no geothermal input. The concentrations of Cl-, SO42- and NO3- were measured in about 350 samples and found to be generally <5 ppm. Chloride concentrations remained constant with time, but sulfate and nitrate concentrations decreased, which suggests a nearby industrial source for the sulfate and nitrate. A mixing model for Cl-, SO42- and ??34S also suggests an industrial source for the rainwater sulfur. The determination of pH was found to be necessary, but is not sufficient to characterize rainwater acidity. The Gran titration method was used to determine alkalinity with respect to equivalence point of H2CO3(*). Values of alkalinity were found to range from 10-4 to 10-6 eq/L, and were negative only for some samples from Vivero and Guadalajara. Thus, SO42- and NO3- are in general not in acidic form (i.e. balanced by Na+, Ca2+, etc. rather than H+). Sulfate ??34S values were about -1.5??? in Los Azufres and its surroundings, and in Morelia, but differed from the value of -0.2??? for Guadalajara. The ??34S values for H2S from the Los Azufres geothermal wells are in the range -3.4 to 0.0???. The ??34S ranges for the natural and anthropogenic sources for environmental sulfur overlap, making it difficult to differentiate between the contribution of different sources. However, a similarity of values of ??34S at Los Azufres and Morelia (85 km distant) suggest a regional source of sulfate that is not associated with geothermal emissions from Los Azufres. (C) 2000 Published by Elsevier Science Ltd on behalf of CNR.The chemical compositions of rainwater were analyzed at Los Azufres geothermal field in Spain from May-September 1995. The

  20. Assessment of the geothermal potential of southwestern New Mexico. Final report, July 1, 1978-April 30, 1980

    SciTech Connect

    Elston, W.E.

    1981-07-01

    Results are reported of geologic mapping of geothermal anomalies in the Gila Hot Springs KGRA/Mimbres Hot Springs area, Grant County. They suggest that both hot-spring occurrences are structurally controlled by the intersection of a major Basin and Range fault and the disturbed margin of an ash-flow tuff cauldron. Hydrothermal alteration in both areas is related to mid-Tertiary volcanism, not to modern hot springs. At Gila Hot Springs, the geothermal aquifer is a zone at the contact between the unwelded top of a major ash-flow tuff sheet (Bloodgood Canyon Rhyolite Tuff) and a succession of interlayered vesicular basaltic andesite flows and thin sandstone beds (Bearwallow Mountain Formation). Scattered groups of natural hot springs occur at intersections of this zone and the faults bordering the northeastern side of the Gila Hot Springs graben. Hydrothermal alteration of Bloodgood Canyon Rhyolite Tuff near major faults seems to have increased its permeability. At Mimbres Hot Springs, a single group of hot springs is controlled by the intersection of the Mimbres Hot Springs fault and a fractured welded ash-flow tuff that fills the Emory cauldron (Kneeling Nun Tuff). Gila Hot Springs and Mimbres Hot Springs do not seem to be connected by throughgoing faults. At both localities, hot spring water is used locally for space heating and domestic hot water; at Gila Hot Springs, water of 65.6/sup 0/C (150/sup 0/F) is used to generate electricity by means of a 10 kw freon Rankine Cycle engine. This is the first such application in New Mexico.

  1. Structural and sedimentological study of the Cerro Prieto geothermal field, Baja California, Mexico

    SciTech Connect

    Vonder Haar, S.

    1981-06-01

    Geophysical and lithologic well logs from over fifty wells have been qualitatively and quantitatively analyzed using both manual and computer interpretation techniques. These logs were studied to make stratigraphic correlations throughout the Cerro Prieto field and to interpret the deltaic depositional environment of the field's lithologic units. Dipmeter and seismic data were of great value in making stratigraphic interpretations and extrapolations. Cross sections were constructed to illustrate lithofacies variations throughout the geothermal field. In turn, these sections were used to construct a three-dimensional model of the Cerro Prieto geothermal reservoir. Petrographic microscopy, scanning electron microscopy, and x-ray diffraction analyses of well-bore cuttings and cores were utilized to determine the degree and distribution of hydrothermal alteration by fluids at temperatures up to 350{sup 0}C, the origins of dissolution porosity, and the relative degree of fracture versus dissolution porosity. The results of these analyses were confirmed by log-derived determinations of formation fluid properties, porosity, and petrophysical properties and by studies of Cerro Prieto cores conducted under in-situ conditions. The results of this research were integrated into the Cerro Prieto reservoir model.

  2. Imaging Faults with Reverse-Time Migration for Geothermal Exploration at Jemez Pueblo in New Mexico

    SciTech Connect

    Huang, Lianjie; Albrecht, Michael; Kaufman, Greg; Kelley, Shari; Rehfeldt, Kenneth; Zhang, Zhifu

    2011-01-01

    The fault zones at Jemez Pueblo may dominate the flow paths of hot water, or confine the boundaries of the geothermal reservoir. Therefore, it is crucial to image the geometry of these fault zones for geothermal exploration in the area. We use reverse-time migration with a separation imaging condition to image the faults at Jemez Pueblo. A finite-difference full-wave equation method with a perfectly-matching-layer absorbing boundary condition is used for backward propagation of seismic reflection data from receivers and forward propagation of wavefields from sources. In the imaging region, the wavefields are separated into the upgoing and downgoing waves, and leftgoing and rightgoing waves. The upgoing and downgoing waves are used to obtain the downward-looking image, and the leftgoing and rightgoing waves are used to form the left-looking image and right-looking image from sources. The left-looking and right-looking images are normally weaker than the downward-looking image because the reflections from the fault zones are much weaker than those from sedimentary layers, but these migration results contain the images of the faults. We apply our reverse-time migration with a wavefield separation imaging condition to seismic data acquired at Jemez Pueblo, and our preliminary results reveal many faults in the area.

  3. Geothermal Exploration Using Remote Sensing in the South of Baja California Sur, Mexico

    NASA Astrophysics Data System (ADS)

    Báncora, Cristina; Prol-Ledesma, Rosa María

    2008-05-01

    The area from Ciudad Constitución to Los Cabos in Baja California Sur was studied using a mosaic of four Landsat ETM+images. The main objective was to define favorable areas for utilization and exploitation of geothermal energy. The approach was to spectrally and spatially enhance the images to define characteristics related with geothermal activity, as are the presence of altered rock and main geological structures. The products of hydrothermal alteration are minerals that belong to two main groups: oxides and hydroxyls. Therefore, image processing is necessary to enhance oxides and hydroxyls spectral features and subdue the vegetation spectral characteristics. The band subtraction (4-3, 3-1, 5-7) gave the finest results due to the fact that it is a linear equation that does not cause loss of information when it is stretched. A color composite was done with these three layers and after a detailed visual analysis three areas were point out to be prospective to contain hydrothermal activity.

  4. Evaluation of the geothermal resource in the area of Albuquerque, New Mexico

    SciTech Connect

    Jiracek, G.R.; Swanberg, C.A.; Morgan, P.; Parker, M.D.

    1983-07-01

    Factors indicating a potential geothermal resource near Albuquerque are: (1) nearby volcanoes active as recently as 120,000 years ago, (2) gravity interpretation indicating a potential reservoir averaging 1.5 km thickness, (3) high heat flow near the city, (4) warm waters (>30/sup 0/C) in municipal wells, (5) recent seismicity indicating active faulting, thereby, allowing the possibility of deep hydrothermal circulation, (6) high shallow (<30 m) temperature gradients (>100/sup 0/C/km) discovered in our drillholes, (7) deeper (<500 m) gradients from water wells exceeding 80/sup 0/C/km, and (8) chemical analyses of 88 groundwater samples yielding estimated base reservoir temperatures as high as 190/sup 0/C. An area of elevated shallow temperature gradients (less than or equal to 140/sup 0/C/km) was discovered a few kilometers west of Albuquerque by our 69 hole drilling program. Resistivity, magnetic, and gravity measurements combined with computer modeling suggests that heated ground water is forced closer to the surface here by flow over a buried ridge. A well drilled nearby yielded the highest recorded temperature in the Albuquerque area at its maximum depth (32.8/sup 0/C at 364 m). The deep gradient is 35/sup 0/C/km. An oil test well close by reported large volumes of water at 1 km; therefore, the possibility of a low temperature (>50/sup 0/C) geothermal resource exists west of Albuquerque at less than 1 km depth.

  5. Shallow geothermal investigations into the existence of the Valles Caldera outflow plume near Ponderosa and Jemez Pueblo, north-central, New Mexico

    NASA Astrophysics Data System (ADS)

    Salaz, Robert Ezekiel

    Geothermal research within the Jemez Mountains spans several decades and is documented in many papers. This study serves to extend the research boundary to the south and east outside of Valles caldera and Canon de San Diego, where the main occurrences of geothermal activity are located. The focus of this investigation is to test for a deep ~900 m, stratigraphically-bound thermal aquifer within the Madera Limestone along the western margin of the Santo Domingo basin transition zone near Ponderosa and Jemez Pueblo, in north-central New Mexico. Numerous springs were sampled for aqueous geochemistry to identify leakage of a deeper geothermal aquifer into shallow aquifers. Wells were sampled for temperature anomalies. In addition, two travertine deposits were analyzed for stable isotope composition and one deposit was dated using U-Series techniques to assess the timing and origin of deposition. This study is important because researchers in other extensional basins have identified reasonably good geothermal reservoirs in deep carbonate aquifers that are similar in geologic setting to the Madera Limestone aquifer of this study. The existence of a deep geothermal aquifer near Ponderosa and Jemez Pueblo, New Mexico could prove to be another prospect for geothermal exploration in the Jemez Mountains. Aqueous geochemistry of springs are plotted on ternary Piper diagrams to help classify similar geochemical trends and group these trends into recognizable patterns. These data indicate calcium carbonate rich waters in the north that may gradationally change to alkaline type waters as they flow south through the study area. Contrasting this data, SiO2 and TDS concentrations show two separate systems that may indicate separate confined aquifers. Two distinct TDS regions are observed, one with higher concentrations (>1000 ppm) shows a decrease from N-S and one with lower concentrations (<600 ppm) shows an increase from N-S. The data indicate that the waters can be classified as

  6. Californians & Education. PPIC Statewide Survey

    ERIC Educational Resources Information Center

    Baldassare, Mark; Bonner, Dean; Petek, Sonja; Shrestha, Jui

    2011-01-01

    The Public Policy Institute of California (PPIC) Statewide Survey series provides policymakers, the media, and the public with objective, advocacy-free information on the perceptions, opinions, and public policy preferences of California residents. Inaugurated in April 1998, this is the 116th PPIC Statewide Survey in a series that has generated a…

  7. Californians & Education. PPIC Statewide Survey

    ERIC Educational Resources Information Center

    Baldassare, Mark; Bonner, Dean; Petek, Sonja; Shrestha, Jui

    2014-01-01

    The Public Policy Institute of California (PPIC) Statewide Survey provides policymakers, the media, and the public with objective, advocacy-free information on the perceptions, opinions, and public policy preferences of California residents. This is the 141st PPIC Statewide Survey in a series that was inaugurated in April 1998 and has generated a…

  8. Californians & Education. PPIC Statewide Survey

    ERIC Educational Resources Information Center

    Baldassare, Mark; Bonner, Dean; Petek, Sonja; Shrestha, Jui

    2012-01-01

    The Public Policy Institute of California (PPIC) Statewide Survey provides policymakers, the media, and the public with objective, advocacy-free information on the perceptions, opinions, and public policy preferences of California residents. Inaugurated in April 1998, this is the 125th PPIC Statewide Survey in a series that has generated a…

  9. Geothermal investigation of spring and well waters of the Los Alamos Region, New Mexico

    SciTech Connect

    Goff, F.E.; Sayer, S.

    1980-04-01

    The chemical and isotopic characters of 20 springs and wells in the Los Alamos area were investigated for indications of geothermal potential. These waters were compared with known hot and mineral springs from adjacent Valles Caldera and San Ysidro. All waters in the Los Alamos area are composed of meteoric water. Isotopic data show that the two primary aquifers beneath the Los Alamos region have different recharge areas. Relatively high concentrations of lithium, arsenic, chlorine, boron, and fluorine in some of the Los Alamos wells suggest these waters may contain a small fraction of thermal/mineral water of deep origin. Thermal water probably rises up high-angle faults associated with a graben of the Rio Grande rift now buried by the Pajarito Plateau.

  10. Dynamics of a geothermal field traced by noble gases: Cerro Prieto, Mexico

    SciTech Connect

    Mazor, E.; Truesdell, A.H.

    1981-01-01

    Noble gases have been measured mass spectrometrically in samples collected during 1977 from producing wells at Cerro Prieto. Positive correlations between concentrations of radiogenic (He, /sup 40/Ar) and atmospheric noble gases (Ne, Ar, and Kr) suggest the following dynamic model: the geothermal fluids originated from meteoric water penetrated to more than 2500 m depth (below the level of first boiling) and mixed with radiogenic helium and argon-40 formed in the aquifer rocks. Subsequently, small amounts of steam were lost by a Raleigh process (0 to 3%) and mixing with shallow cold water occurred (0 to 30%). Noble gases are sensitive tracers of boiling in the initial stages of 0 to 3% steam separation and complement other tracers, such as Cl or temperature, which are effective only beyond this range.

  11. Dynamics of a geothermal field traced by noble gases: Cerro Prieto, Mexico

    USGS Publications Warehouse

    Mazor, E.; Truesdell, A.H.

    1984-01-01

    Noble gases have been measured mass spectrometrically in samples collected during 1977 from producing wells at Cerro Prieto. Positive correlations between concentrations of radiogenic (He and 40Ar) and atmospheric noble gases (Ne, Ar and Kr) suggest the following dynamic model: the geothermal fluids originated from meteoric water that penetrated to more than 2500 m depth (below the level of first boiling) and mixed with radiogenic He and 40Ar formed in the aquifer rocks. Subsequently, small amounts of steam were lost by a Raleigh process (0 - 30%) and mixing with shallow cold water occurred (0 - 30%). Noble gases are sensitive tracers of boiling in the initial stages of 0 - 3% steam separation and complement other tracers, such as C1 or temperature, which are effective only beyond this range. ?? 1984.

  12. Evaluation of the solute geothermometry of thermal springs and drilled wells of La Primavera (Cerritos Colorados) geothermal field, Mexico: A geochemometrics approach

    NASA Astrophysics Data System (ADS)

    Pandarinath, Kailasa; Domínguez-Domínguez, Humberto

    2015-10-01

    A detailed study on the solute geothermometry of thermal water (18 springs and 8 drilled wells) of La Primavera geothermal field (LPGF) in Mexico has been carried out by employing a geochemical database compiled from the literature and by applying all the available solute geothermometers. The performance of these geothermometers in predicting the reservoir temperatures has been evaluated by applying a geochemometrics (geochemical and statistical) method. The springs of the LPGF are of bicarbonate type and the majority have attained partial-equilibrium chemical conditions and the remaining have shown non-equilibrium conditions. In the case of geothermal wells, water is dominantly of chloride-type and, among the studied eight geothermal wells, four have shown full-equilibrium chemical conditions and another four have indicated partial-equilibrium conditions. All springs of HCO3-​ type water have provided unreliable reservoir temperatures, whereas the only one available spring of SO42- type water has provided the reservoir temperature nearer to the average BHT of the wells. Contrary to the general expected behavior, spring water of non-equilibrium and geothermal well water of partial-equilibrium chemical conditions have indicated more reliable reservoir temperatures than those of partially-equilibrated and fully-equilibrated water, respectively. Among the chemical concentration data, Li and SiO2 of two springs, SO42- and Mg of four springs, and HCO3 and Na concentrations of two geothermal wells were identified as outliers and this has been reflected in very low reservoir temperatures predicted by the geothermometers associated with them (Li-Mg, Na-Li, Na-K-Mg, SiO2 etc.). Identification of the outlier data points may be useful in differentiating the chemical characteristics, lithology and the physico-chemical and geological processes at the sample locations of the study area. In general, the solute geothermometry of the spring waters of LPGF indicated a dominantly

  13. Low-temperature geothermal potential of the Ojo Caliente warm springs area, northern New Mexico

    SciTech Connect

    Vuataz, F.D.; Stix, J.; Goff, F.; Pearson, C.F.

    1984-05-01

    A detailed geochemical investigation of 17 waters (thermal and cold, mineralized and dilute) was performed in the Ojo Caliente-La Madera area. Two types of thermomineral waters have separate and distinctive geologic, geochemical, and geothermal characteristics. The water from Ojo Caliente Resort emerges with temperatures less than or equal to 54/sup 0/C from a Precambrian metarhyolite. Its chemistry, typically Na-HCO/sub 3/, has a total mineralization of 3600 mg/l. Isotopic studies have shown that the thermal water emerges from the springs and a hot well without significant mixing with the cold shallow aquifer of the valley alluvium. However, the cold aquifer adjacent to the resort does contain varying amounts of thermal water that originates from the warm spring system. Geothermometry calculations indicate that the thermal water may be as hot as 85/sup 0/C at depth before its ascent toward surface. Thermodynamic computations on the reaction states of numerous mineral phases suggest that the thermal water will not cause major scaling problems if the hot water is utilized for direct-use geothermal applications. By means of a network of very shallow holes, temperature and electrical conductivity anomalies have been found elsewhere in the valley around Ojo Caliente, and resistivity soundings have confirmed the presence of a plume of thermal water entering the shallow aquifer. The group of lukewarm springs around La Madera, with temperatures less than or equal to 29/sup 0/C, chemical type of NaCaMg-HCO/sub 3/Cl and with a total mineralization less than or equal to 1500 mg/l behaves as a different system without any apparent relation to the Ojo Caliente system. Its temperature at depth is not believed to exceed 35 to 40/sup 0/C.

  14. Predicting thermal conductivity of rocks from the Los Azufres geothermal field, Mexico, from easily measurable properties

    SciTech Connect

    Garcia, Alfonso; Contreras, Enrique; Dominquez, Bernardo A.

    1988-01-01

    A correlation is developed to predict thermal conductivity of drill cores from the Los Azufres geothermal field. Only andesites are included as they are predominant. Thermal conductivity of geothermal rocks is in general scarce and its determination is not simple. Almost all published correlations were developed for sedimentary rocks. Typically, for igneous rocks, chemical or mineral analyses are used for estimating conductivity by using some type of additive rule. This requires specialized analytical techniques and the procedure may not be sufficiently accurate if, for instance, a chemical analysis is to be changed into a mineral analysis. Thus a simple and accurate estimation method would be useful for engineering purposes. The present correlation predicts thermal conductivity from a knowledge of bulk density and total porosity, properties which provide basic rock characterization and are easy to measure. They may be determined from drill cores or cuttings, and the procedures represent a real advantage given the cost and low availability of cores. The multivariate correlation proposed is a quadratic polynomial and represents a useful tool to estimate thermal conductivity of igneous rocks since data on this property is very limited. For porosities between 0% and 25%, thermal conductivity is estimated with a maximum deviation of 22% and a residual mean square deviation of 4.62E-3 n terms of the log{sub 10}(k{rho}{sub b}) variable. The data were determined as part of a project which includes physical, thermal and mechanical properties of drill cores from Los Azufres. For the correlation, sixteen determinations of thermal conductivity, bulk density and total porosity are included. The conductivity data represent the first determinations ever made on these rocks.

  15. Deep Groundwater Circulation within Crystalline Basement Rocks and the Role of Hydrologic Windows in the Formation of the Truth or Consequences, New Mexico Low-Temperature Geothermal System

    NASA Astrophysics Data System (ADS)

    Pepin, J.; Person, M. A.; Phillips, F. M.; Kelley, S.; Timmons, S.; Owens, L.; Witcher, J. C.; Gable, C. W.

    2014-12-01

    Hot Springs are common in amagmatic settings, but the mechanisms of heating are often obscure. We have investigated the origin of the Truth or Consequences, New Mexico low-temperature (~ 41 °C) hot springs in the southern Rio Grande rift. We tested two mechanisms that could account for the geothermal anomaly. The first scenario is that the anomaly is the result of lateral forced convection associated with a gently-dipping carbonate aquifer. The second scenario is that high permeability of crystalline basement rocks permits circulation of groundwater down to depths of 8 km prior to discharging in Truth or Consequences. To test these hypotheses, we constructed a two-dimensional hydrothermal model of the region using FEMOC. Model parameters were constrained by calibrating to measured temperatures, specific discharge rates and groundwater residence times. We collected 16 temperature profiles, 11 geochemistry samples and 6 carbon-14 samples within the study area. The geothermal waters are Na+/Cl- dominated and have apparent groundwater ages ranging from 5,500 to 11,500 years. Hot Springs geochemistry is consistent with water/rock interaction in a silicate geothermal reservoir, rather than a carbonate system. Peclet-number analysis of temperature profiles suggests specific discharge rates beneath Truth or Consequences range from 2 to 4 m/year. Geothermometry indicates maximum reservoir temperatures are around 167 °C. We were able to reasonably reproduce observed measurements using the permeable-basement scenario (10-12 m2). The carbonate-aquifer scenario failed to match observations. Our findings imply that the Truth or Consequences geothermal system formed as a result of deep groundwater circulation within permeable crystalline basement rocks. Focused geothermal discharge is the result of localized faulting, which has created a hydrologic window through a regional confining unit. In tectonically active areas, deep groundwater circulation within fractured crystalline

  16. Geothermal potential on Kirtland Air Force Base lands, Bernalillo County, New Mexico

    SciTech Connect

    Grant, P.R. Jr.

    1981-10-01

    Extensive sampling and geochemical analysis of groundwater in and near the base disclosed no significant geothermal parameters. However, structural conditions and current hydrologic regimes strongly suggest that thermal waters would be masked by near surface, low temperature meteoric water originating as rain and snowfall in the nearby mountains. Controlled source audio-magnetotelluric (CSAMT) electromagnetic techniques, refraction seismic experiments, and gravity traverses were utilized on the base. These, together with published geohysical information that presents evidence for a shallow magma body beneath the Albuquerque Basin; favorable terrestrial heat flow, water chemistry, and shallow temperature gradient holes on the nearby mesa west of the Rio Grande; interpretation of regional gravity data; and geological data from nearby deep wells tend to confirm structural, stratigraphic, and hydrologic conditions favorable for developing an extensive intermediate to high-temperature hydrothermal regime on portions of Kirtland AFB lands where intensive land use occurs. Two possible exploration and development scenarios are presented. One involves drilling a well to a depth of 3000 to 5000 ft (914 to 1524 m) to test the possibility of encountering higher than normal water temperatures on the basinward side of the faults underlying the travertine deposits. The other is to conduct limited reflection seismograph surveys in defined areas on the base to determine the depth to basement (granite) and thickness of the overyling, unconfined, water filled, relatively unconsolidated sand and gravel aquifer.

  17. Carbon isotope geochemistry of hydrocarbons in the Cerro Prieto geothermal field, Baja California Norte, Mexico.

    PubMed

    Des Marais, D J; Stallard, M L; Nehring, N L; Truesdell, A H

    1988-01-01

    Hydrocarbon abundances and stable-isotopic compositions were measured in wells M5, M26, M35 and M102, which represent a range of depths (1270-2000 m) and temperatures (275-330 degrees C) in the field. In order to simulate the production of the geothermal hydrocarbons, gases were collected from the pyrolysis of lignite in the laboratory. This lignite was obtained from a well which sampled rock strata which are identical to those occurring in the field, but which have experienced much lower subsurface temperatures. In both the well and the laboratory observations, high-temperature environments favored higher relative concentrations of methane, ethane and benzene and generally higher delta 13C-values in the individual hydrocarbons. The best correlation between the laboratory and well data is obtained when laboratory-produced gases from experiments conducted at lower (400 degrees C) and higher (600 degrees C) temperatures are mixed. This improved correlation suggests that the wells are sampling hydrocarbons produced from a spectrum of depths and temperatures in the sediments. PMID:11542148

  18. Hydrothermal flow regime and magmatic heat source of the Cerro Prieto geothermal system, Baja California, Mexico

    SciTech Connect

    Elders, W.A.; Bird, D.K.; Schiffman, P.; Williams, A.E.

    1984-01-01

    This detailed three-dimensional model of the natural flow regime of the Cerro Prieto geothermal field, before steam production began, is based on patterns of hydrothermal mineral zones and light stable isotopic ratios observed in rock samples from more than 50 deep wells, together with temperature gradients, wireline logs and other data. At the level so far penetrated by drilling, this hydrothermal system was heated by a thermal plume of water close to boiling, inclined at 45/sup 0/, rising from the northeast and discharging to the west. To the east a zone of cold water recharge overlies the inclined thermal plume. Fission track annealing studies show the reservoir reached 170/sup 0/C only 10/sup 4/ years ago. Oxygen isotope exchange data indicate that a 12 km/sup 3/ volume of rock subsequently reacted with three times its volume of water hotter than 200/sup 0/C. Averaged over the duration of the heating event this would require a flow velocity through a typical cross-section of the reservoir of about 6 m/year. The heat in storage in that part of the reservoir hotter than 200/sup 0/C and shallower than 3 km depth is equivalent to that which would be released by the cooling of about 1 or 2 km/sup 3/ of basalt or gabbro magma.

  19. Carbon isotope geochemistry of hydrocarbons in the Cerro Prieto geothermal field, Baja California Norte, Mexico

    USGS Publications Warehouse

    Des Marais, D.J.; Stallard, M.L.; Nehring, N.L.; Truesdell, A.H.

    1988-01-01

    Hydrocarbon abundances and stable-isotopic compositions were measured in wells M5, M26, M35 and M102, which represent a range of depths (1270-2000 m) and temperatures (275-330??C) in the field. In order to simulate the production of the geothermal hydrocarbons, gases were collected from the pyrolysis of lignite in the laboratory. This lignite was obtained from a well which sampled rock strata which are identical to those occurring in the field, but which have experienced much lower subsurface temperatures. In both the well and the laboratory observations, high-temperature environments favored higher relative concentrations of methane, ethane and benzene and generally higher ??13C-values in the individual hydrocarbons. The best correlation between the laboratory and well data is obtained when laboratory-produced gases from experiments conducted at lower (400??C) and higher (600??C) temperatures are mixed. This improved correlation suggests that the wells are sampling hydrocarbons produced from a spectrum of depths and temperatures in the sediments. ?? 1988.

  20. Carbon isotope geochemistry of hydrocarbons in the Cerro Prieto geothermal field, Baja California Norte, Mexico

    NASA Technical Reports Server (NTRS)

    Des Marais, D. J.; Stallard, M. L.; Nehring, N. L.; Truesdell, A. H.

    1988-01-01

    Hydrocarbon abundances and stable-isotopic compositions were measured in wells M5, M26, M35 and M102, which represent a range of depths (1270-2000 m) and temperatures (275-330 degrees C) in the field. In order to simulate the production of the geothermal hydrocarbons, gases were collected from the pyrolysis of lignite in the laboratory. This lignite was obtained from a well which sampled rock strata which are identical to those occurring in the field, but which have experienced much lower subsurface temperatures. In both the well and the laboratory observations, high-temperature environments favored higher relative concentrations of methane, ethane and benzene and generally higher delta 13C-values in the individual hydrocarbons. The best correlation between the laboratory and well data is obtained when laboratory-produced gases from experiments conducted at lower (400 degrees C) and higher (600 degrees C) temperatures are mixed. This improved correlation suggests that the wells are sampling hydrocarbons produced from a spectrum of depths and temperatures in the sediments.

  1. Carbon isotope geochemistry of hydrocarbons in the Cerro Prieto geothermal field, Baja California Norte, Mexico.

    PubMed

    Des Marais, D J; Stallard, M L; Nehring, N L; Truesdell, A H

    1988-01-01

    Hydrocarbon abundances and stable-isotopic compositions were measured in wells M5, M26, M35 and M102, which represent a range of depths (1270-2000 m) and temperatures (275-330 degrees C) in the field. In order to simulate the production of the geothermal hydrocarbons, gases were collected from the pyrolysis of lignite in the laboratory. This lignite was obtained from a well which sampled rock strata which are identical to those occurring in the field, but which have experienced much lower subsurface temperatures. In both the well and the laboratory observations, high-temperature environments favored higher relative concentrations of methane, ethane and benzene and generally higher delta 13C-values in the individual hydrocarbons. The best correlation between the laboratory and well data is obtained when laboratory-produced gases from experiments conducted at lower (400 degrees C) and higher (600 degrees C) temperatures are mixed. This improved correlation suggests that the wells are sampling hydrocarbons produced from a spectrum of depths and temperatures in the sediments.

  2. Louisiana's statewide beach cleanup

    USGS Publications Warehouse

    Lindstedt, Dianne M.; Holmes, Joseph C.

    1989-01-01

    Litter along Lousiana's beaches has become a well-recognized problem. In September 1987, Louisiana's first statewide beach cleanup attracted about 3300 volunteers who filled 16,000 bags with trash collected along 15 beaches. An estimated 800,173 items were gathered. Forty percent of the items were made of plastic and 11% were of polystyrene. Of all the litter collected, 37% was beverage-related. Litter from the oil and gas, commercial fishing, and maritime shipping industries was found, as well as that left by recreational users. Although beach cleanups temporarily rid Louisiana beaches of litter, the real value of the effort is in public participation and education. Civic groups, school children, and individuals have benefited by increasing their awareness of the problems of trash disposal.

  3. A Brief History With Lessons Learned From The Hot Dry Rock Geothermal Energy Program At Fenton Hill, New Mexico, USA

    NASA Astrophysics Data System (ADS)

    Kelkar, S.; Woldegabriel, G. W.; Rehfeldt, K. R.

    2009-12-01

    Important lessons were learned that continue to be relevant today from the world’s first successful demonstration of a Hot Dry Rock (HDR) system for extracting underground geothermal energy conducted at Fenton Hill, New Mexico. This experiment, conducted in hot, low-permeability, low-water context, crystalline basement rock was fundamentally different from the Enhanced Geothermal Systems (EGS) development currently underway at several sites in the U.S. and world. The HDR concept was developed in 1970’s at Los Alamos National Laboratory (LANL). Two HDR reservoirs with two wells each were created and tested at the Fenton Hill site. In spite of its proximity to the Valles caldera and the Rio Grande rift, geological information and heat-flow data were used successfully to select the Fenton Hill experimental site within a block of intact crystalline basement rocks. Deep crystalline basement rocks marginal to active fault/recent volcanic centers were good candidates for HDR systems: these rocks had high heat content, and low matrix permeability leading to low water losses. Reconnaissance surveys indicated significant potential HDR geothermal resources through out the USA. Drilling and completion operations in hot crystalline rocks were challenging requiring further R&D. Hydraulic stimulation activities were carried out successfully in deep, hot crystalline rocks. Logging tools and instruments were developed that could operate successfully in the ~250oC environment. Development of techniques and tools for microseismic data monitoring, analysis, and interpretation was found to be enormously valuable. It was found that the systematic process that should be followed in developing HDR reservoirs is to drill and stimulate the first well, use the microseismic data to locate the target zone, and then complete the additional wells. The largest fraction of the flow impedance was found to be near the production well. Combined interpretation of the pressure testing, microseismic

  4. Preliminary assessment of the geologic setting, hydrology, and geochemistry of the Hueco Tanks geothermal area, Texas and New Mexico. Geological Circular 81-1

    SciTech Connect

    Henry, C.D.; Gluck, J.K.

    1981-01-01

    The Hueco Tanks geothermal area contains five known but now inactive hot wells (50/sup 0/ to 71/sup 0/C). The area trends north-south along the east side of Tularosa-Hueco Bolson astride the Texas-New Mexico border approximately 40 km northeast of El Paso. Because of its proximity to El Paso, geothermal water in the Hueco Tanks area could be a significant resource. Hueco Bolson is an asymmetric graben. Greatest displacement along boundary faults is on the west side adjacent to the Franklin Mountains. Faults, probably with less displacement, also form an irregular boundary on the east side of the bolson. Several probable faults may allow the rise of thermal waters from depth. Ground water in the central part of Hueco Bolson flows southward to the Rio Grande. However, four of the five hot wells occur in a ground-water trough along the eastern margin of the bolson. The trough may be bounded by one of the postulated faults serving as a barrier to ground-water flow. Data on permeability of potential reservoir rocks, including basin fill and fractured bedrock, suggest that they may be sufficiently permeable for development of geothermal water. The concentration of dissolved solids in the geothermal waters varies from 1100 to at least 12,500 mg/L, but most waters show high concentrations. They are Na-Cl-(SO/sub 4/) waters similar in composition to nonthermal waters in basin fill. The composition probably results from contact with evaporite deposits either in basin fill or in Paleozoic bedrock. Shallow reservoirs reach maximum temperatures of about 80/sup 0/ to 110/sup 0/C. Available data are too limited to evaluate adequately the resource potential of geothermal water in the Hueco Tanks area.

  5. Preliminary assessment of the geologic setting, hydrology, and geochemistry of the Hueco Tanks geothermal area, Texas and New Mexico. Geological Circular 81-1

    SciTech Connect

    Henry, C.D.; Gluck, J.K.

    1981-01-01

    The Hueco Tanks geothermal area contains five known but now inactive hot wells (50/sup 0/ to 71/sup 0/C). The area trends north-south along the east side of Tularosa-Hueco Bolson astride the Texas-New Mexico border approximately 40 km northeast of El Paso. Because of its proximity to El Paso, geothermal water in the Hueco Tanks area could be a significant resource. Hueco Bolson is an asymmetric graben. Greatest displacement along boundary faults is on the west side adjacent to the Franklin Mountains. Faults, probably with less displacement, also form an irregular boundary on the east side of the bolson. Several probable faults may allow the rise of thermal waters from depth. Ground water in the central part of Hueco Bolson flows southward to the Rio Grande. However, four of the five hot wells occur in a ground-water trough along the eastern margin of the bolson. The trough may be bounded by one of the postulated faults serving as a barrier to ground-water flow. Data on permeability of potential reservoir rocks, including basin fill and fractured bedrock, suggest that they may be sufficiently permeable for development of geothermal water. The concentration of dissolved solids in the geothermal waters varies from 1100 to at least 12,500 mg/L, but most waters show high concentrations. They are Na-Cl-(SO/sub 4/) waters similar in composition to nonthermal waters in basin fill. The composition probably results from contact with evaporite deposits either in basin fill or in Paleozoic bedrock. Shallow reservoirs reach maximum temperatures of about 80/sup 0/ to 110/sup 0/C. Available data are too limited to evaluate adequately the resource potential of geothermal water in the Hueco Tanks area. A complete exploration program, including geological, hydrological, and geochemical investigation, is recommended.

  6. A reconnaissance geochemical study of La Primavera geothermal area, Jalisco, Mexico

    USGS Publications Warehouse

    Mahood, G.A.; Truesdell, A.H.; Templos, M.L.A.

    1983-01-01

    The Sierra La Primavera, a late Pleistocene rhyolitic caldera complex in Jalisco, Me??xico, contains fumaroles and large-discharge 65??C hot springs that are associated with faults related to caldera collapse and to later magma insurgence. The nearly-neutral, sodium bicarbonate, hot springs occur at low elevations at the margins of the complex, whereas the water-rich fumaroles are high and central. The Comisio??n Federal de Electricidad de Me??xico (CFE) has recently drilled two deep holes at the center of the Sierra (PR-1 and Pr-2) and one deep hole at the western margin. Temperatures as high as 285??C were encountered at 1160 m in PR-1, which produced fluids with 820 to 865 mg/kg chloride after flashing to one atmosphere. Nearby, PR-2 encountered temperatures to 307??C at 2000 m and yielded fluids with chloride contents fluctuating between 1100 and 1560 mg/kg after flashing. Neither of the high-temperature wells produced steam in commercial quantities. The well at the western margin of the Sierra produced fluids similar to those from the hot springs. The temperature reached a maximum of 100??C near the surface and decreased to 80??C at 2000 m. Various geothermometers (quartz conductive, Na/K, Na-K-Ca, ??18O(SO4-H2O) and D/H (steam-water) all yield temperatures of 170 ?? 20??C when applied to the hot spring waters, suggesting that these spring waters flow from a large shallow reservoir at this temperature. Because the hot springs are much less saline than the fluids recovered in PR-1 and PR-2, the mixed fluid in the shallow reservoir can contain no more than 10-20% deep fluid. This requires that most of the heat is transferred by steam. There is probably a thin vapor-dominated zone in the central part of the Sierra, through which steam and gases are transferred to the overlying shallow reservoir. Fluids from this reservoir cool from ???170??C to 65??C by conduction during the 5-7 km of lateral flow to the hot springs. ?? 1983.

  7. Prospects for the commercial development of hot dry rock geothermal energy in New Mexico

    NASA Astrophysics Data System (ADS)

    Duchane, D. V.; Goff, F.

    A vast store of energy is available to the world in the form of hot dry rock (HDR) which exists almost everywhere beneath the surface of the earth. The Los Alamos National Laboratory has developed technology to mine the heat from HDR by using techniques developed in the petroleum industry. In practice, an artificial reservoir is created in the hot rock and water is circulated through the reservoir to extract the thermal energy and bring it to the surface. There are virtually no adverse environmental effects from an HDR plant when the system is operated in a closed-loop mode with the process water continually recirculated. An experimental plant at Fenton Hill, NM is now undergoing long-term testing to demonstrate that energy can be obtained from HDR on a sustained basis with operational procedures which are readily adaptable to industry. Significant HDR resources exist in the state of New Mexico. Resources in the Valles Caldera, Zuni Uplift, and Rio Grande Rift have been evaluated in detail. Studies indicate that it should be possible to economically develop high grade HDR resources with technology available today. As advanced concepts for developing and operating HDR systems are investigated, even more widespread utilization of the technology will be commercially feasible.

  8. Mexico

    NASA Technical Reports Server (NTRS)

    2002-01-01

    This true-color image of Mexico was acquired by the Moderate-resolution Imaging Spectroradiometer (MODIS), flying aboard NASA's Terra spacecraft. In areal extent, Mexico is the third largest country on the continent of North America (not counting Greenland, which is a province of Denmark), comprised of almost 2 million square kilometers (756,000 square miles) of land. Home to roughly 100 million people, Mexico is second only to the United States in population, making it the world's largest Spanish-speaking nation. To the north, Mexico shares its border with the United States-a line that runs some 3,100 kilometers (1,900 miles) east to west. About half of this border is defined by the Rio Grande River, which runs southeast to the Gulf of Mexico (partially obscured by clouds in this image) and marks the dividing line between Texas and Mexico. Toward the upper left (northwest) corner of this image is the Baja California peninsula, which provides the western land boundary for the Gulf of California. Toward the northwestern side of the Mexican mainland, you can see the Sierra Madre Occidental Mountains (brownish pixels) running southeast toward Lake Chapala and the city of Guadalajara. About 400 km (250 miles) east and slightly south of Lake Chapala is the capital, Mexico City. Extending northward from Mexico City is the Sierra Madre Oriental Mountains, the irregular line of brownish pixels that seem to frame the western edges of the bright white cumulus clouds in this image. Between these two large mountain ranges is a large, relatively dry highland region. To the south, Mexico shares borders with Guatemala and Belize, both of which are located south of Mexico's Yucatan Peninsula. Image courtesy Reto Stockli, Brian Montgomery, and Robert Simmon, based on data from the MODIS Science Team

  9. The Significance of Acid Alteration in the Los Humeros High-Temperature Geothermal Field, Puebla, Mexico.

    NASA Astrophysics Data System (ADS)

    Elders, W. A.; Izquierdo, G.

    2014-12-01

    The Los Humeros geothermal field is a high-enthalpy hydrothermal system with more than 40 drilled deep wells, mostly producing high steam fractions at > 300oC. However, although it has a large resource potential, low permeability and corrosive acid fluids have hampered development so that it currently has an installed electrical generating capacity of only 40 MWe. The widespread production of low pH fluids from the reservoir is inconsistent with the marked absence in the reservoir rocks of hydrothermal minerals typical of acid alteration. Instead the hydrothermal alteration observed is typical of that due to neutral to alkaline pH waters reacting with the volcanic rocks of the production zones. Thus it appears that since the reservoir has recently suffered a marked drop in fluid pressure and is in process of transitioning from being water-dominated to being vapor-dominated. However sparse examples of acid leaching are observed locally at depths of about 2 km in the form of bleached, intensely silicified zones, in low permeability and very hot (>350oC) parts of reservoir. Although these leached rocks retain their primary volcanic and pyroclastic textures, they are altered almost entirely to microcrystalline quartz, with some relict pseudomorphs of plagioclase phenocrysts and traces of earlier-formed hydrothermal chlorite and pyrite. These acid-altered zones are usually only some tens of meters thick and deeper rocks lack such silicification. The acid fluids responsible for their formation could either be magmatic volatiles, or could be formed during production (e.g. reaction of water and salts forming hydrogen chloride by hydrolysis at high temperatures). The very high boron content of the fluids produced by the Los Humeros wells suggests that their ultimate source is most likely magmatic gases. However, these acid gases did not react widely with the rocks. We suggest that the silicified zones are forming locally where colder descending waters are encountering

  10. Heterogeneity of the Liquid Phase, and Vapor Separation in Los Azufres (Mexico) Geothermal Reservoir

    SciTech Connect

    Nieva, D.; Quijano, L.; Garfias, A.; Barragan, R.M.; Laredo, F.

    1983-12-15

    Data of chemical and isotopic composition of fluids from Los Azufres geothermal wells is interpreted in order to characterize the composition of the liquid phase, and to define the relation between this phase and fluids from steam-producing wells. Chemical and specific enthalpy data show that most wells considered are fed a mixture of steam and liquid. Thus, flashing occurs in the formation. This poses a problem on the interpretation of isotopic data, because the composition of the feeding mixture need not be representative of the composition of the liquid phase in the reservoir. Two extreme alternatives for the interpretation of isotopic data are considered. In the first alternative the composition of the total discharge is considered to be the same as that of the liquid in the reservoir. In the second alternative the feeding fluid is considered to be a mixture of the liquid phase in the reservoir and the calculated fraction of steam. In addition, this steam is assumed to separate from a much larger mass of that liquid phase at the downhole temperature. The contribution of steam is then subtracted from the total discharge to yield the composition of the liquid phase. Using data for silica concentration in total discharge and separated water, the chloride concentration in the reservoir liquid is calculated. This result is used to calculate the fraction of steam in the feeding mixture of each well. The isotopic data is then corrected as proposed for the second alternative, to yield the composition of the liquid phase. Comparison of the corrected and uncorrected isotopic values shows that the correction has an important effect only when the steam mass fraction in the feeding mixture is large (> 20%). The correction tends to reduce the dispersion of data points in a {delta} D vs {delta}{sup 18}O diagram. Points representing composition of liquid phase show an approximately linear distribution, suggesting a process of mixing of two fluids. Available data appears to

  11. Mexico.

    PubMed

    1988-02-01

    Focus in this discussion of Mexico is on the following: geography; the people; history; political conditions; the economy; foreign relations; and relations between the US and Mexico. As of July 1987, the population of Mexico numbered 81.9 million with an estimated annual growth rate of 2.09%. 60% of the population is Indian-Spanish (mestizo), 30% American Indian, 9% white, and 1% other. Mexico is the most populous Spanish-speaking country in the world and the 2nd most populous country in Latin America. Education is decentralized and expanded. Mexico's topography ranges from low desert plains and jungle-like coastal strips to high plateaus and rugged mountains. Hernan Cortes conquered Mexico in 1919-21 and founded a Spanish colony that lasted for almost 300 years. Independence from Spain was proclaimed by Father Miguel Hidalgo on September 16, 1810; the republic was established on December 6, 1822. Mexico's constitution of 1917 provides for a federal republic with a separation of powers into independent executive, legislative, and judicial branches of government. Significant political themes of the administration of President Miguel de la Madrid Hurtado, who began his 6-year term in 1982, have been restructuring the economy, liberalizing trade practices, decentralizing government services, and eliminating corruption among public servants. In 1987, estimates put the real growth of the Mexican economy at 1.5%; the gross domestic product (GDP) had shrunk by 3.5% in 1986. Yet, on the positive side, Mexico's international reserves increased to record levels in 1987 (to about $15 billion), and its current account surplus reached more than $3 billion. Mexico has made considerable progress in moving to restructure its economy. It has substantially reduced impediments to international trade and has moved to reduce the number of parastatal firms. 1987 was the 2nd consecutive year in which Mexico recorded triple-digit inflation; inflation reached 158.8%. Other problems include

  12. Evaluation of geothermal potential of Rio Grande rift and Basin and Range province, New Mexico. Final technical report, January 1, 1977-May 31, 1978

    SciTech Connect

    Callender, J.F.

    1985-04-01

    A study was made of the geological, geochemical and geophysical characteristics of potential geothermal areas in the Rio Grande rift and Basin and Range province of New Mexico. Both regional and site-specific information is presented. Data was collected by: (1) reconnaissance and detailed geologic mapping, emphasizing Neogene stratigraphy and structure; (2) petrologic studies of Neogene igneous rocks; (3) radiometric age-dating; (4) geochemical surveying, including regional and site-specific water chemistry, stable isotopic analyses of thermal waters, whole-rock and mineral isotopic studies, and whole-rock chemical analyses; and (5) detailed geophysical surveys, using electrical, gravity and magnetic techniques, with electrical resistivity playing a major role. Regional geochemical water studies were conducted for the whole state. Integrated site-specific studies included the Animas Valley, Las Cruces area (Radium Springs and Las Alturas Estates), Truth or Consequences region, the Albuquerque basin, the San Ysidro area, and the Abiquiu-Ojo Caliente region. The Animas Valley and Las Cruces areas have the most significant geothermal potential of the areas studied. The Truth or Consequences and Albuquerque areas need further study. The San Ysidro and Abiquiu-Ojo Caliente regions have less significant geothermal potential. 78 figs., 16 tabs.

  13. Mexico.

    PubMed

    1984-09-01

    Although Mexico has serious economic and population growth problems, the country is making progress toward solving both of these problems. Mexico has a population of 77.7 million and a population density of 102 persons/square mile. The country has a birth rate of 32/1000, a death rate of 6/1000, and an annual growth rate of 2.6%. The estimated infant mortality rate is 55/1000. The median age of the population is 17.4. Mexico City, with a population of 15 million, is the 3rd largest city in the world, and by 1995, it is expected to be the largest city in the world, with a projected population of 25.2 million. The government vigorously promotes family planning, and the annual population growth rate slowed down from a high of 3.2% in 1970-75 to the current rate of 2.6%. Mexico hopes to achieve replacement level fertility by the year 2000. Other government policies promote income equality, agricultural development, and regional equalization of population growth. In 1982 Mexico's per capita income was US$2270, exports totaled US$21 billion, and imports totaled US$15 billion. By 1976, Mexico's international debt was US$30.2 billion, and inflation was rampant. Recently, the newly elected president, Miguel de la Madrid of the Partido Revolucionario Institutional, obtained a grant of US$39 million from the International Monetary Fund and removed price controls. These efforts should help stabilize Mexico's economy. The country will also need to expand its exports and increase its cultivatable acreage.

  14. Mexico.

    PubMed

    1984-09-01

    Although Mexico has serious economic and population growth problems, the country is making progress toward solving both of these problems. Mexico has a population of 77.7 million and a population density of 102 persons/square mile. The country has a birth rate of 32/1000, a death rate of 6/1000, and an annual growth rate of 2.6%. The estimated infant mortality rate is 55/1000. The median age of the population is 17.4. Mexico City, with a population of 15 million, is the 3rd largest city in the world, and by 1995, it is expected to be the largest city in the world, with a projected population of 25.2 million. The government vigorously promotes family planning, and the annual population growth rate slowed down from a high of 3.2% in 1970-75 to the current rate of 2.6%. Mexico hopes to achieve replacement level fertility by the year 2000. Other government policies promote income equality, agricultural development, and regional equalization of population growth. In 1982 Mexico's per capita income was US$2270, exports totaled US$21 billion, and imports totaled US$15 billion. By 1976, Mexico's international debt was US$30.2 billion, and inflation was rampant. Recently, the newly elected president, Miguel de la Madrid of the Partido Revolucionario Institutional, obtained a grant of US$39 million from the International Monetary Fund and removed price controls. These efforts should help stabilize Mexico's economy. The country will also need to expand its exports and increase its cultivatable acreage. PMID:12339665

  15. The Need for Senior College Programming as a Statewide Higher Education Initiative: Individual, Institutional, and Societal Benefits of Senior Learning

    ERIC Educational Resources Information Center

    Shepherd, Nancy Kay

    2011-01-01

    The purpose of this study was to determine if there was sufficient emphasis on senior college programming in New Mexico public higher education institutions and if that programming should be formalized. It was suggested that an initiative among New Mexico higher education institutions be undertaken to create a statewide network for senior college…

  16. An integrated multidisciplinary re-evaluation of the geothermal system at Valles Caldera, New Mexico, using an immersive three-dimensional (3D) visualization environment

    NASA Astrophysics Data System (ADS)

    Fowler, A.; Bennett, S. E.; Wildgoose, M.; Cantwell, C.; Elliott, A. J.

    2012-12-01

    We describe an approach to explore the spatial relationships of a geothermal resource by examining diverse geological, geophysical, and geochemical data sets using the immersive 3-dimensional (3D) visualization capabilities of the UC Davis Keck Center for Active Visualization in the Earth Sciences (KeckCAVES). The KeckCAVES is a facility where stereoscopic images are projected onto four, surfaces (three walls and a floor), which the user perceives as a seamless 3D image of the data. The user can manipulate and interact with the data, allowing a more intuitive interpretation of data set relationships than is possible with traditional 2-dimensional techniques. We incorporate multiple data sets of the geothermal system at Valles Caldera, New Mexico: topography, lithology, faults, temperature, alteration mineralogy, and magnetotellurics. With the ability to rapidly and intuitively observe data relationships, we are able to efficiently and rapidly draw conclusions about the subsurface architecture of the Valles Caldera geothermal system. We identify two high-temperature anomalies, one that corresponds with normal faults along the western caldera ring fracture, and one that with the resurgent dome. A cold-temperature anomaly identified adjacent to the resurgent dome high-temperature anomaly appears to relate to a fault controlled graben valley that acts as a recharge zone, likely funneling cold meteoric water into the subsurface along normal faults observed on published maps and cross sections. These high-temperature anomalies broadly correspond to subsurface regions where previous magnetotelluric studies have identified low apparent resistivity. Existing hot springs in the Sulfur Springs area correspond to the only location where our modeled 100°C isotherm intersects the ground surface. Correlation between the first occurrence of key alteration minerals (pyrite, chlorite, epidote) in previously drilled boreholes and our temperature model vary, with chlorite showing a

  17. Geothermal test-well drilling program for the Village of Jemez Springs, New Mexico. Final technical report, January 1, 1979-June 30, 1981

    SciTech Connect

    Armenta, E.; Icerman, L.; Starkey, A.H.

    1981-09-01

    The geothermal resources located during test drilling at Jemez Springs, New Mexico are described and the feasibility of utilizing this low-temperature resource for a space heating demonstration project at the Town Hall and Fire Department Building is discussed. A test well was drilled to a depth of 824 feet that penetrated water-producing zones at 80 feet with a water temperature of approximately 150 to 155/sup 0/F and at 500 feet with waters of approximately 120 to 125/sup 0/F. After a number of repairs to the Jemez Springs Well Number 1, the project was ended having completed a well capable of producing a flow of approximately 20 gpm at 150 to 155/sup 0/F. A follow-up demonstration heating project is planned.

  18. Successful Statewide Walking Program Websites

    ERIC Educational Resources Information Center

    Teran, Bianca Maria; Hongu, Nobuko

    2012-01-01

    Statewide Extension walking programs are making an effort to increase physical activity levels in America. An investigation of all 20 of these programs revealed that 14 use websites as marketing and educational tools, which could prove useful as the popularity of Internet communities continues to grow. Website usability information and an analysis…

  19. Iowa Statewide Disaster Recovery Plan.

    ERIC Educational Resources Information Center

    Porter, Barry L., Ed.

    The purpose in developing a statewide disaster recovery plan for libraries is to encourage librarians at the local level to develop their own plans to be used in time of disaster and to provide information about resources which can be used in an emergency. This manual provides self-assessment forms for identifying staff members and sources of…

  20. Californians & Education. PPIC Statewide Survey

    ERIC Educational Resources Information Center

    Baldassare, Mark; Bonner, Dean; Petek, Sonja; Willcoxon, Nicole

    2010-01-01

    This edition of the PPIC (Public Policy Institute of California) Statewide Survey is the sixth in a series of surveys funded by The William and Flora Hewlett Foundation focusing on K-12 education issues. Its goal is to inform state policymakers, encourage discussion, and raise public awareness about a variety of K-12, higher education,…

  1. Geothermal Technologies Program Blue Ribbon Panel Recommendations

    SciTech Connect

    none,

    2011-06-17

    The Geothermal Technologies Program assembled a geothermal Blue Ribbon Panel on March 22-23, 2011 in Albuquerque, New Mexico for a guided discussion on the future of geothermal energy in the United States and the role of the DOE Program. The Geothermal Blue Ribbon Panel Report captures the discussions and recommendations of the experts. An addendum is available here: http://www.eere.energy.gov/geothermal/pdfs/gtp_blue_ribbon_panel_report_addendum10-2011.pdf

  2. Mexico.

    PubMed

    1993-01-01

    The background notes on Mexico provide text and recent statistical information on the geography, population, government, economy, and foreign relations, specifically the North American Free Trade Agreement with US. The 1992 population is estimated at 89 million of which 60% are mestizo (Indian-Spanish), 30% are American Indian, 9% are Caucasian, and 1% are other. 90% are Roman Catholic. There are 8 years of compulsory education. Infant mortality is 30/1000 live births. Life expectancy for males is 68 years and 76 years for females. The labor force is comprised of 30% in services, 24% in agriculture and fishing, 19% in manufacturing, 13% in commerce, 7% in construction, 4% in transportation and communication, and .4% in mining. There are 31 states and a federal district. Gross domestic product (GDP) per capita was $3200 in 1991. Military expenditures were .5% of GDP in 1991. The average inflation rate is 19%. Mexico City with 20 million is the largest urban center in the world. In recent years, the economy has been restructured with market oriented reforms; the result has been a growth of GDP of 3.6% in 1991 from 2% in 1987. Dependence on oil exports has decreased. There has been privatization and deregulation of state-owned companies. Subsidies to inefficient companies have been stopped. Tariff rates were reduced. The financial debt has been reduced and turned into a surplus of .8% in 1992. Mexico's foreign debt has been reduced from its high in 1987 of $107 billion. Agricultural reforms have been ongoing for 50 years. Land was redistributed, but standards of living and productivity have improved only slightly. Rural land tenure regulations have been changed, and other economic reforms are expected. Mexico engages in ad hoc international groups and is selective about membership in international organizations. PMID:12178052

  3. Mexico.

    PubMed

    1993-01-01

    The background notes on Mexico provide text and recent statistical information on the geography, population, government, economy, and foreign relations, specifically the North American Free Trade Agreement with US. The 1992 population is estimated at 89 million of which 60% are mestizo (Indian-Spanish), 30% are American Indian, 9% are Caucasian, and 1% are other. 90% are Roman Catholic. There are 8 years of compulsory education. Infant mortality is 30/1000 live births. Life expectancy for males is 68 years and 76 years for females. The labor force is comprised of 30% in services, 24% in agriculture and fishing, 19% in manufacturing, 13% in commerce, 7% in construction, 4% in transportation and communication, and .4% in mining. There are 31 states and a federal district. Gross domestic product (GDP) per capita was $3200 in 1991. Military expenditures were .5% of GDP in 1991. The average inflation rate is 19%. Mexico City with 20 million is the largest urban center in the world. In recent years, the economy has been restructured with market oriented reforms; the result has been a growth of GDP of 3.6% in 1991 from 2% in 1987. Dependence on oil exports has decreased. There has been privatization and deregulation of state-owned companies. Subsidies to inefficient companies have been stopped. Tariff rates were reduced. The financial debt has been reduced and turned into a surplus of .8% in 1992. Mexico's foreign debt has been reduced from its high in 1987 of $107 billion. Agricultural reforms have been ongoing for 50 years. Land was redistributed, but standards of living and productivity have improved only slightly. Rural land tenure regulations have been changed, and other economic reforms are expected. Mexico engages in ad hoc international groups and is selective about membership in international organizations.

  4. Implications for organic maturation studies of evidence of a geologically rapid increase and stabilization of vitrinite reflectance at peak temperature: Cerro Prieto geothermal system, Mexico

    USGS Publications Warehouse

    Barker, C.E.

    1991-01-01

    A short-term rapid heating and cooling of the rock in well M-94 below 1300 m was caused by a pulse of hot water passing through the edge of the Cerro Prieto, Mexico, geothermal system. Below 1300 m, the peak paleotemperatures were about 225-250??C, but equilibrium well log temperatures indicate a decrease to 150-210??C at present. This hot water pulse sharply increased vitrinite reflectance to levels comparable to those measured in the central part of the system, even though studies of apatite fission-track annealing indicate that the duration of heating was only 100-101 yr in M-94, in contrast to 103-104 yr in the central part of the system. The quick change of the vitrinite reflectance geothermometer indicates that thermal maturation reactions can stabilize, after a geologically short period of heating, to a level consistent with peak temperature under moderate to high-temperature diagenesis in open, fluid-rich, geothermal systems. -from Author

  5. Geothermal: Energy for development - The World Bank and geothermal development

    SciTech Connect

    Bertelsmeier, W.

    1986-01-01

    The World Bank views geothermal energy as one of a variety of natural resources which can be developed to supply the energy needs of a country. Since the World Bank Group finances projects in developing countries. This paper discusses geothermal energy only in that context. Geothermal power is generated in nine developing countries today, which represent nearly 40% of worldwide geothermal generating capacity. The World Bank has helped finance geothermal investments in six of these countries-the Phillippines, Mexico, El Salvador, Nicaragua, Indonesia and Kenya.

  6. Orientation of minimum principal stress in the hot dry rock geothermal reservoir at Fenton Hill, New Mexico

    SciTech Connect

    Burns, K.L.

    1991-01-01

    The stress field at the source of microearthquakes in the interior of the hot dry rock geothermal reservoir at Fenton Hill appears to be different to the far field stress outside the reservoir. The stress field seems to be re-oriented prior to failure, during the course of processes that inflate the reservoir. The state of stress, both inside and outside, the hot dry rock (HDR) geothermal reservoir at Fenton Hill, is important in predicting the course of stress-dependent processes, and in transferring HDR technology developed at Fenton Hill, to sites, such as at Clearlake in California, where the stress field is expected to be substantially different. The state of stress at Fenton Hill is not well known because of limitations in stress measuring technology. It is necessary to use a variety of indirect methods and seek an estimate of the stress. 5 refs.

  7. Hydrothermal alteration of sediments associated with surface emissions from the Cerro Prieto geothermal field, Baja, California, Mexico

    SciTech Connect

    Valette-Silver, J.N.; Esquer-Patino, I.; Elders, W.A.; Collier, P.C.; Hoagland, J.R.

    1981-01-01

    Surface emissions from the Cerro Prieto geothermal reservoir are restricted to a 100 km/sup 2/ area on the western side of the field, near the volcano Cerro Prieto and the lake Laguna Vulcano. Some 57 surface emissions, explored in 1979, were classified into hot springs, mud pots, pools, fumaroles and geysers (Valette and Esquer-Patino, 1979). A study of the mineralogical changes associated with these hydrothermal vents was initiated with the aim of developing possible exploration tools for geothermal resources. The Cerro Prieto reservoir has already been explored by extensive deep drilling so that relationships between surface manifestations and deeper hydrothermal processes could be established directly. Approximately 120 samples of surface sediments were collected both inside and outside of the vents. The mineralogy of the altered sediments studied appears to be controlled by the type of emission. A comparison between the changes in mineralogy due to low temperature hydrothermal activity in the reservoir, seen in samples from boreholes, and mineralogical changes in the surface emission samples shows similar general trends below 180/sup 0/C: increase of quartz, feldspar and illite, with subsequent disappearance of kaolinite, montmorillonite, calcite and dolomite. These mineral assemblages seem to be characteristics of the discharge from high intensity geothermal fields.

  8. Annotated geothermal bibliography of Utah

    SciTech Connect

    Budding, K.E.; Bugden, M.H.

    1986-01-01

    The bibliography includes all the Utah geothermal references through 1984. Some 1985 citations are listed. Geological, geophysical, and tectonic maps and reports are included if they cover a high-temperature thermal area. The references are indexed geographically either under (1) United States (national studies), (2) regional - western United States or physiographic province, (3) Utah - statewide and regional, or (4) county. Reports concerning a particular hot spring or thermal area are listed under both the thermal area and the county names.

  9. Magnetotelluric Investigation of Structures Related to a Geothermal Anomaly in the Buckman Well field in the Rio Grande Rift, New Mexico

    NASA Astrophysics Data System (ADS)

    Jones, D.; Chu, S.; McCormack, K.; Barghouty, L. K.; Mostafanejad, A.; Lasscock, B.; Bedrosian, P.; Pellerin, L.

    2013-12-01

    High borehole temperature gradients have been measured over short spatial scales in the Buckman Well Field located within the Espanola Basin of the Rio Grande Rift, New Mexico. The proximity of the well field to the young Caja del Rio volcanic plateau prompted a study undertaken by the Summer of Applied Geophysical Experience (SAGE) program to uncover structure related to this geothermal anomaly. The localized nature of this geothermal anomaly is suggested to be indicative of a local controlling structure as opposed to a more regional structure. Two-dimensional (2-D) models were constructed using magnetotelluric (MT) and audiomagnetotelluric (AMT) data acquired during 2011-13 seasons of the SAGE field program. Geoelectric strike, being important in determining whether an optimal survey design was employed for 2-D MT inverse modeling, was determined from Swift';s formula, which is subject to galvanic distortion. The geoelectric strike direction obtained from a phase tensor analysis, unaffected by such distortion, generally agreed with the established geological strike of the region. The phase tensor analysis shows predominantly 2-D behavior, although some three-dimensional (3-D) character is observed in the low-frequency MT data. An independent statistical metric developed at SAGE confirms these findings. This observation could be reflected as a conductive anomaly found in the 2-D MT inverse model. Synthetic data were generated to test the sensitivity of the 2-D inversion method to different layer resistivity values and faulted structures in the AMT range. Using these synthetic results to understand the inversion of field data we identify conductive horizons at 100 m and 250-300 m depth. The MT models estimate basin depth at 3-4 km in accordance with independent constraints from geologic mapping, gravity models and seismic imaging. Variations in basement topography correlate to some degree with previously proposed structural features elsewhere beneath the Caja del

  10. The Oregon Geothermal Planning Conference

    SciTech Connect

    1980-10-02

    Oregon's geothermal resources represent a large portion of the nation's total geothermal potential. The State's resources are substantial in size, widespread in location, and presently in various stages of discovery and utilization. The exploration for, and development of, geothermal is presently dependent upon a mixture of engineering, economic, environmental, and legal factors. In response to the State's significant geothermal energy potential, and the emerging impediments and incentives for its development, the State of Oregon has begun a planning program intended to accelerate the environmentally prudent utilization of geothermal, while conserving the resource's long-term productivity. The program, which is based upon preliminary work performed by the Oregon Institute of Technology's Geo-Heat Center, will be managed by the Oregon Department of Energy, with the assistance of the Departments of Economic Development, Geology and Mineral Industries, and Water Resources. Funding support for the program is being provided by the US Department of Energy. The first six-month phase of the program, beginning in July 1980, will include the following five primary tasks: (1) coordination of state and local agency projects and information, in order to keep geothermal personnel abreast of the rapidly expanding resource literature, resource discoveries, technological advances, and each agency's projects. (2) Analysis of resource commercialization impediments and recommendations of incentives for accelerating resource utilization. (3) Compilation and dissemination of Oregon geothermal information, in order to create public and potential user awareness, and to publicize technical assistance programs and financial incentives. (4) Resource planning assistance for local governments in order to create local expertise and action; including a statewide workshop for local officials, and the formulation of two specific community resource development plans. (5) Formulation and

  11. Mexico.

    PubMed

    De Sherbinin, A

    1990-02-01

    Results of Mexico's 1987 National Survey of Fertility and Health (ENFES) shows significant changes in total fertility rates (TFR) and contraceptive prevalence rates. These changes are due i large part to the institutionalization of a population policy enacted in 1972 that has continued to receive strong support from the government. The TFR declined from 6.3 to 3.8 with urban rates falling 50% and rural rates 3/4. Between 1976-86 use of modern contraception doubled, going from 23-45%. Use of the pill declined while female sterilization increased for 9-36%; IUD's remained the 2nd most popular method at 18%. Contraceptive prevalence rates mirror changes in desired family sizes; women between 15-19 now desire 2.6 children while women at the end of their reproductive cycle expect to have 4. Infant mortality rates dropped from 85 to 47/1000 between 1970 and 1987. 62% of illiterate women wish to stop childbearing as compared with 49% of women with secondary schooling. This difference is related to differences in the ages of the 2 groups; as education has spread, women without any schooling tend to be older and have higher parity; and in spite of wanting to stop childbearing, they are 10 times less likely to use contraception than their more educated counterparts. 67% of the women interviewed received prenatal care from a doctor, with higher rates among the urban population. Between 80-90% of women breastfed their children, with higher rates among the rural poor.

  12. Monitoring and modeling land subsidence at the Cerro Prieto Geothermal Field, Baja California, Mexico, using SAR interferometry

    NASA Astrophysics Data System (ADS)

    Carnec, Claudie; Fabriol, Hubert

    Images derived from repeat-pass spaceborne interferometric synthetic aperture radar (InSAR) systems offer the possibility of mapping surface deformation of small spatial extent and monitoring its spatio-temporal evolution. A slow local subsidence has been detected at the Cerro Prieto geothermal field from images acquired by the European Space Agency remote sensing satellites ERS-1/2 between 1993 and 1997. Although agricultural activity in the area limited the investigation, interferometric monitoring revealed that the ground deformation is associated with the withdrawal of geothermal fluid and agreed with the leveling data. Modeling of the subsidence was carried out assuming elastic deformation in a half-space from simple point sources, of which five were necessary to reproduce the fringe patterns observed on the interferograms. The depths and locations of three of the sources are compatible with the location of the known reservoir. The study improves prior knowledge of the displacement field and of the mecanisms involved in the subsidence phenomenon.

  13. 42 CFR 440.380 - Statewideness.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Benchmark Benefit and Benchmark-Equivalent Coverage § 440.380 Statewideness. States have the option to amend their State plan to provide benchmark or benchmark-equivalent coverage to individuals without regard to statewideness....

  14. 42 CFR 440.380 - Statewideness.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Benchmark Benefit and Benchmark-Equivalent Coverage § 440.380 Statewideness. States have the option to amend their State plan to provide benchmark or benchmark-equivalent coverage to individuals without regard to statewideness....

  15. 42 CFR 440.380 - Statewideness.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Benchmark Benefit and Benchmark-Equivalent Coverage § 440.380 Statewideness. States have the option to amend their State plan to provide benchmark or benchmark-equivalent coverage to individuals without regard to statewideness....

  16. 42 CFR 440.380 - Statewideness.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Benchmark Benefit and Benchmark-Equivalent Coverage § 440.380 Statewideness. States have the option to amend their State plan to provide benchmark or benchmark-equivalent coverage to individuals without regard to statewideness....

  17. 42 CFR 440.380 - Statewideness.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...) MEDICAL ASSISTANCE PROGRAMS SERVICES: GENERAL PROVISIONS Benchmark Benefit and Benchmark-Equivalent Coverage § 440.380 Statewideness. States have the option to amend their State plan to provide benchmark or benchmark-equivalent coverage to individuals without regard to statewideness....

  18. Statewide Measures Inventory. Technical Report 68.

    ERIC Educational Resources Information Center

    Wing, Paul; And Others

    The Statewide Measures Inventory is essentially a list of items of information, along with concise definitions and other information of interest, relevant to statewide postsecondary education planning and management. It has been designated primarily as a working document for use by state-level postsecondary education planners and decision makers…

  19. Statewide Coordination of Community Junior Colleges.

    ERIC Educational Resources Information Center

    Stuckman, Jeffrey A.

    The need for statewide coordinating agencies has become more evident as the number of junior colleges within each state continues to grow. These centralized agencies can assist in reducing unnecessary competition and duplication among junior colleges, and can improve the coordination of statewide educational needs with those of the individual…

  20. Geothermal development in the Pacific rim. Transactions, Volume 20

    SciTech Connect

    1996-12-31

    This document entitled Geothermal Development in the Pacific Rim contains the Transactions, Volume 20 of the Geothermal Resources Council, 1996 Annual Meeting. Topics of the presentations include: Air quality assessment and mitigation, District heating and other direct-uses of geothermal energy, Environmental permitting in the Pacific Rim, Geothermal exploration strategies, tools and techniques, and Focus of IEA Geothermal programs. Geothermal resources and resource development in the USA, Indonesia, Mexico, Japan, and the Philippines are highlighted. Also included is a section on Geothermal power plant design, construction, and operation, and Geothermal reservoir assessment, the key to international financing.

  1. DYNAMIC MIXING MODEL OF THE CHIGNAHUAPAN THERMAL SPRING IN THE GEOTHERMAL ZONE OF THE ACOCULCO CALDERA, PUEBLA, MEXICO

    NASA Astrophysics Data System (ADS)

    Gutierrez-Cirlos, A.; Torres-Rodriguez, V.

    2009-12-01

    The Acoculco Caldera, of Pliocenic age, is located within the limits of the Transmexican Volcanic Belt (CVT) and the Sierra Madre Oriental (SMOr). The Acoculco geothermal zone consists of a 790m thick igneous sequence, related to a volcanic complex formed by andesites and rhyolitic domes emplaced in an 18 Km diameter annular fracture. It unconformably overlies a 5000 m thick section of folded and faulted Jurassic-Cretaceous carbonate rocks. The Chignahuapan Spring, located in the extreme eastern part of the Geothermal Zone of the Acoculco Caldera, yields temperatures of 49°C and discharges an estimated of 98 lps from the karstified Lower Cretaceous limestone. Both major and trace element geochemical analysis were carried out, and results were interpreted using Piper and Stiff diagrams, as well as geothermometry. The results indicate that water belongs to the calcium-bicarbonate type and yield temperatures in a range of 70-80°C at depth, which suggest an extensive lateral flow from the main reservoir and mixing with shallow groundwaters. The spring suffers significant variations in its temperature throughout the year, especially during the rainy season, when water temperature decreases up to 10°C. Analyzing the hot spring water temperature data from of the last 10 years and comparing it with the precipitation and air temperature curves of the region, we expect to develop a dynamic mixing model which depicts the relation between these factors and the importance of each one in the water temperature variation. We also look forward to be able to forecast water temperature trends for the next several years and correlate it with climate change in the area.

  2. Microbial diversity in Los Azufres geothermal field (Michoacán, Mexico) and isolation of representative sulfate and sulfur reducers.

    PubMed

    Brito, Elcia M S; Villegas-Negrete, Norberto; Sotelo-González, Irene A; Caretta, César A; Goñi-Urriza, Marisol; Gassie, Claire; Hakil, Florence; Colin, Yannick; Duran, Robert; Gutiérrez-Corona, Felix; Piñón-Castillo, Hilda A; Cuevas-Rodríguez, Germán; Malm, Olaf; Torres, João P M; Fahy, Anne; Reyna-López, Georgina E; Guyoneaud, Rémy

    2014-03-01

    Los Azufres spa consists of a hydrothermal spring system in the Mexican Volcanic Axis. Five samples (two microbial mats, two mud pools and one cenote water), characterized by high acidity (pH between 1 and 3) and temperatures varying from 27 to 87 °C, were investigated for their microbial diversity by Terminal-Restriction Fragment Length Polymorphism (T-RFLP) and 16S rRNA gene library analyses. These data are the first to describe microbial diversity from Los Azufres geothermal belt. The data obtained from both approaches suggested a low bacterial diversity in all five samples. Despite their proximity, the sampling points differed by their physico-chemical conditions (mainly temperature and matrix type) and thus exhibited different dominant bacterial populations: anoxygenic phototrophs related to the genus Rhodobacter in the biomats, colorless sulfur oxidizers Acidithiobacillus sp. in the warm mud and water samples, and Lyzobacter sp.-related populations in the hot mud sample (87 °C). Molecular data also allowed the detection of sulfate and sulfur reducers related to Thermodesulfobium and Desulfurella genera. Several strains affiliated to both genera were enriched or isolated from the mesophilic mud sample. A feature common to all samples was the dominance of bacteria involved in sulfur and iron biogeochemical cycles (Rhodobacter, Acidithiobacillus, Thiomonas, Desulfurella and Thermodesulfobium genera).

  3. Mineralogical-chemical composition and environmental risk potential of pond sediments at the geothermal field of Los Azufres, Mexico

    NASA Astrophysics Data System (ADS)

    Birkle, P.; Merkel, B.

    2002-01-01

    Since 1982, estimated amounts of 9,400 t, 15,000 kg, 720 kg and 105 kg of Si, Fe, As and Cs respectively have accumulated at the bottom of 18 evaporation ponds as part of the geothermal production cycle at Los Azufres. This accumulation is caused by precipitation of brine solutes during the evaporation of 10% of the total pond water volume before its re-injection into the reservoir. Extraction experiments with pond precipitates and geochemical simulations with the PHREEQC program indicate the high solubility of most precipitates under natural environmental conditions. The comparisons with the primary brine composition indicate that less than 1% of most dissolved brine solutes, except for Co, Cu, Mn, Pb, Ag, Fe and Si, are accumulated at the pond bottom. Arsenic has maximum values of 160 mg/kg in the pond sediments, and Mo, Hg and Tl also exceed international environmental standards for contaminated soils. Elevated concentrations and the mobility potential of several metals and non-metals require the application of remediation techniques for the final disposal of the sediments in the future.

  4. Geothermal Energy.

    ERIC Educational Resources Information Center

    Conservation and Renewable Energy Inquiry and Referral Service (DOE), Silver Spring, MD.

    An introduction to geothermal energy is provided in this discussion of: (1) how a geothermal reservoir works; (2) how to find geothermal energy; (3) where it is located; (4) electric power generation using geothermal energy; (5) use of geothermal energy as a direct source of heat; (6) geopressured reservoirs; (7) environmental effects; (8)…

  5. Nebraska Statewide Wind Integration Study: Executive Summary

    SciTech Connect

    EnerNex Corporation, Knoxville, Tennessee; Ventyx, Atlanta, Georgia; Nebraska Power Association, Lincoln, Nebraska

    2010-03-01

    Wind generation resources in Nebraska will play an increasingly important role in the environmental and energy security solutions for the state and the nation. In this context, the Nebraska Power Association conducted a state-wide wind integration study.

  6. Hydrothermal-flow regime and magmatic heat source of the Cerro Prieto geothermal system, Baja California, Mexico

    SciTech Connect

    Elders, W.A.; Bird, D.K.; Williams, A.E.; Schiffman, P.

    1982-01-01

    This detailed three-dimensional model of the natural flow regime of the Cerro Prieto geothermal field, before steam production began, is based on patterns of hydrothermal mineral zones and light stable isotopic ratios observed in rock samples from more than fifty deep wells, together with temperature gradients, wireline logs and other data. At the level so far penetrated by drilling, this hydrothermal system was heated by a thermal plume of water close to boiling, inclined at 45/sup 0/, rising from the northeast and discharging to the west. To the east a zone of cold water recharge overlies the inclined thermal plume. Fission track annealing studies shows that the reservoir reached 170/sup 0/C only 10/sup 4/ years ago. Oxygen isotope exchange data indicate that a 12 km/sup 3/ volume of rock subsequently reacted with three times its volume of water hotter than 200/sup 0/C. Averaged over the duration of the heating event this would require a flow velocity of about 6 m/year through the pores of a typical cross section of the reservoir having an average porosity of 10%. Although this is an extensional tectonic environment of leaky transform faulting in which repeated intrusions of basalt magma are likely, for simplicity of computation possible heat sources were modelled as simple two dimensional basalt intrusions of various sizes, shapes and locations. We have calculated a series of two-dimensional convective heat transfer models, with different heat sources and permeability distributions. The models which produce the best fit for the temperature distributions observed in the field today have in common a heat source which is a funnel-shaped basalt intrusion, 4 km wide at the top, emplaced at a depth of 5 km to 6 km about 40,000 to 50,000 years ago.

  7. Geology and geothermal waters of Lightning Dock region, Animas Valley and Pyramid Mountains, Hidalgo County, New Mexico

    SciTech Connect

    Elston, W.E.; Deal, E.G.; Logsdon, M.J.

    1983-01-01

    This circular covers the geology of the Pyramid Peak, Swallow Fork Peak, Table Top Mountain, and South Pyramid Peak 7-1/2-min quadrangles, which include the Lightning Dock KGRA. Hot wells (70 to 115.5/sup 0/C) seem to be structurally controlled by intersections of the ring-fracture zone of an Oligocene ash-flow tuff cauldron (Muir cauldron), a Miocene-to-Holocene north-trending basin-and-range fault (Animas Valley fault), and a northeast-trending lineament that appears to control anomalously heated underground waters and Pliocene-Pleistocene basalt cones in the San Bernardino, San Simon, and Animas Valleys. The Muir cauldron, approximately 20 km in diameter, collapsed in two stages, each associated with the eruption of a rhyolite ash-flow-tuff sheet and of ring-fracture domes. Most of the hydrothermal alteration of the Lightning Dock KGRA is related to the first stage of eruption and collapse, not to the modern geothermal system. Contrary to previous reports, no silicic volcanic rocks younger than basin-and-range faulting are known; unconformities beneath rhyolite ring-fracture domes are caused by Oligocene caldera collapse, not by basin-and-range faulting. The Animas Valley is the site of widespread post-20 My travertine deposits and near-surface veins of calcite, fluorite, and/or psilomelane, controlled by north- or northwest-trending basin-and-range faults. The fluoride-bearing waters of the Lightning Dock KGRA may be a late stage of this hydrothermal activity. Distribution of Pliocene-Pleistocene basalt suggests that deep-seated basalt near the solids may be the ultimate heat source.

  8. Putting New Mexico on Line.

    ERIC Educational Resources Information Center

    Watkins, Beverly T.

    1993-01-01

    A statewide telecommunications network in New Mexico links research and educational institutions, government agencies, businesses, and public interest groups. Development of the system began a decade ago, primarily to promote economic development. New information services are added monthly, and use is expanding rapidly. Some other states have…

  9. Deep geothermal wells in the Los Azufres (Mexico) caldera: Volcanic basement stratigraphy based on major-element analysis

    NASA Astrophysics Data System (ADS)

    Cathelineau, M.; Izquierdo, G.; Vázquez, G. R.; Guevara, M.

    1991-07-01

    The Los Azufres caldera (Michoacán, Mexico) is located in the Trans-Mexican Volcanic Belt (MVB). The pre-caldera volcanic basement consists of a 3-km-thick pile of andesitic flows, intruded and/or overlain by rhyolitic and dacitic domes and flows. The geochemistry of the volcanic layers has been investigated in three deep wells (A9, A25 and A48) down to 3.0 km. Such deep wells have given the opportunity to investigate the geochemical changes related to the hydrothermal metamorphism as well as the stratigraphy of the thick volcanic pile. Systematic analysis of major elements in cores and cuttings shows that the partial to total hydrothermal metamorphism of the series from the greenschist to the amphibolite facies produces significant geochemical changes on the whole-rock geochemistry. Gains in CO 2, H 2O and depletions in alkalis are especially observed and may be related with the crystallization of carbonates and phyllosilicates. However, the depth-concentration profiles have shown that most other elements (such as Al, Fe, Ca, Mg, P and Ti) display moderate changes due to hydrothermal alteration in comparison with their initial variations of magmatic origin. Rythmic compositional changes are observed all along the volcanic pile, with progressive changes in rock composition from basalts to dacites within four megasequences of a few hundred meters thickness. Elements rather immobile under hydrothermal conditions, such as Ti, have been especially useful for the reconstruction of magmatic sequence stratigraphy. Variations of element concentrations seem mostly due to magmatic differentiation of parental basalts which produces compositions from basaltic andesites to dacites. However, the four magmatic suites distinguished display calc-alkaline features coherent with other suites of the MVB volcanoes.

  10. Comprehensive planning for the development of geothermal energy in Las Cruces and Dona Ana County, New Mexico. Final report, January 1-December 3, 1980

    SciTech Connect

    Starkey, A.H.; Gebhard, T.G.

    1981-03-01

    The key commercialization projects components are described: creation of a charter, a policy committee, use of technical expertise, the staff role and the formed adoption of policy recommendations, and their interrelationships. A technical state-of-the-art report for geothermal resources in Dona Ana County is presented including a geothermal evaluation and an environmental impact assessment. (MHR)

  11. Geothermal energy as a source of electricity. A worldwide survey of the design and operation of geothermal power plants

    NASA Astrophysics Data System (ADS)

    Dipippo, R.

    1980-01-01

    An overview of geothermal power generation is presented. A survey of geothermal power plants is given for the following countries: China, El Salvado, Iceland, Italy, Japan, Mexico, New Zealand, Philippines, Turkey, USSR, and USA. A survey of countries planning geothermal power plants is included.

  12. Geothermal energy as a source of electricity. A worldwide survey of the design and operation of geothermal power plants

    SciTech Connect

    DiPippo, R.

    1980-01-01

    An overview of geothermal power generation is presented. A survey of geothermal power plants is given for the following countries: China, El Salvador, Iceland, Italy, Japan, Mexico, New Zealand, Philippines, Turkey, USSR, and USA. A survey of countries planning geothermal power plants is included. (MHR)

  13. Mapping the edge of the Cerros del Rio volcanic field, New Mexico: a piece of the puzzle to understanding a potential geothermal resource

    NASA Astrophysics Data System (ADS)

    Pellerin, L.; Gallegos, M.; Goebel, M.; Murphy, B. S.; Smith, J.; Soto, D.; Swiatlowski, J.; Volk, C.; Welch, M.; Feucht, D. W.; Hollingshaus, B.; Bedrosian, P. A.; McPhee, D. K.

    2012-12-01

    The Cerros del Rio volcanic field located west of Santa Fe, New Mexico spans the southwestern part of the Espanola Basin with the Rio Grande to the west. Underlying the volcanics are the Santa Fe Group sediments, which contain the Ancha Formation, an important aquifer in the region. High temperature gradients in water wells reveal a potential geothermal prospect. In 2012 the Summer of Applied Geophysical Experience (SAGE) program acquired transient electromagnetic (TEM), audiomagnetotelluric (AMT), gravity and ground magnetic data to determine the buried eastern margin of the volcanic field and the connectivity related to the underlying sediments. The roughly EW 5-km long transect was sited from USGS aeromagnetic data to cross the boundary of the Cerros del Rio volcanic field. TEM data collected at ten stations, at 200-400 m spacing, along the transect employed an in-loop configuration with a square 100 m x 100 m transmitter loop and both a Zonge receiver coil and a 5 m square receiver loop. The 5 m loop allowed for the recovery of early-time data that was saturated when using the Zonge coil. AMT data were acquired at eight stations, at 400-500 m spacing, using the Geometric Stratagem system recording from 92 kHz to 10 Hz; a horizontal magnetic dipole transmitter was used to augment low signal strength at around 1 kHz. Gravity data along the profile were acquired using CG-3 and CG-5 Scintrex gravimeters with a station interval >250 m. Magnetic data were acquired with a Geometrics Cesium vapor G-858 magnetometer for about 3500 m along the profile at a 0.5 second sampling rate. Two volcanic flows interbedded with Ancha Formation and overlying Santa Fe Group sediments were identified in both the TEM and AMT modeling. High surface resistivity zones (>300 ohm-m) with depths ranging from ~100 to 300 m define the volcanic flows and correspond to high densities (2.3 to 2.55 g/cm3), while low resistivity zones (<30 ohm-m) correspond to lower densities (~2.1 g/cm3). High

  14. Resource assessment of low- and moderate-temperature geothermal waters in Calistoga, Napa County, California. Report of the second year, 1979 to 1980 of the US Department of Energy-California State-Coupled Program for reservoir assessment and confirmation

    SciTech Connect

    Youngs, L.G.; Bacon, C.F.; Chapman, R.H.; Chase, G.W.; Higgins, C.T.; Majmundar, H.H.; Taylor, G.C.

    1980-11-10

    Statewide assessment studies included updating and completing the USGS GEOTHERM File for California and compiling all data needed for a California Geothermal Resources Map. Site specific assessment studies included a program to assess the geothermal resource at Calistoga, Napa County, California. The Calistoga effort was comprised of a series of studies involving different disciplines, including geologic, hydrologic, geochemical and geophysical studies.

  15. Numerical models for the evaluation of geothermal systems

    SciTech Connect

    Bodvarsson, G.S.; Pruess, K.; Lippmann, M.J.

    1986-08-01

    We have carried out detailed simulations of various fields in the USA (Bada, New Mexico; Heber, California); Mexico (Cerro Prieto); Iceland (Krafla); and Kenya (Olkaria). These simulation studies have illustrated the usefulness of numerical models for the overall evaluation of geothermal systems. The methodology for modeling the behavior of geothermal systems, different approaches to geothermal reservoir modeling and how they can be applied in comprehensive evaluation work are discussed.

  16. 76 FR 38648 - Availability of the Geothermal Technologies Program Blue Ribbon Panel Report and Request for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-01

    ...The Department of Energy's (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Geothermal Technologies Program (the Program) assembled a geothermal Blue Ribbon Panel (the Panel) on March 22/23, 2011 in Albuquerque, New Mexico for a guided discussion on the future of geothermal energy in the United States and the role of the DOE Program. The Geothermal Blue Ribbon Panel Report......

  17. Geothermal steam condensate reinjection

    NASA Technical Reports Server (NTRS)

    Chasteen, A. J.

    1974-01-01

    Geothermal electric generating plants which use condensing turbines and generate and excess of condensed steam which must be disposed of are discussed. At the Geysers, California, the largest geothermal development in the world, this steam condensate has been reinjected into the steam reservoir since 1968. A total of 3,150,000,000 gallons of steam condensate has been reinjected since that time with no noticeable effect on the adjacent producing wells. Currently, 3,700,000 gallons/day from 412 MW of installed capacity are being injected into 5 wells. Reinjection has also proven to be a satisfactory method of disposing of geothermal condensate a Imperial Valley, California, and at the Valles Caldera, New Mexico.

  18. Statewide Coalitions and State Systems. Issues in Prevention

    ERIC Educational Resources Information Center

    Higher Education Center for Alcohol, Drug Abuse, and Violence Prevention, 2012

    2012-01-01

    This "Issues in Prevention" focuses on statewide coalitions and state systems. This issue contains the following articles: (1) Statewide Coalitions for Prevention; (2) Louisiana Higher Education Coalition; (3) Statewide Initiative Grantees; (4) The Ohio College Initiative; and (5) Higher Education Center Resources.

  19. Geothermal resources of Montana

    SciTech Connect

    Metesh, J.

    1994-06-01

    The Montana Bureau of Mines and Geology has updated its inventory of low and moderate temperature resources for the state and has assisted the Oregon Institute of Technology - GeoHeat Center and the University of Utah Research Institute in prioritizing and collocating important geothermal resource areas. The database compiled for this assessment contains information on location, flow, water chemistry, and estimated reservoir temperatures for 267 geothermal well and springs in Montana. For this assessment, the minimum temperature for low-temperature resource is defined as 10{degree} C above the mean annual air temperature at the surface. The maximum temperature for a moderate-temperature resource is defined as greater than 50{degree} C. Approximately 12% of the wells and springs in the database have temperatures above 50{degree} C, 17% are between 30{degree} and 50{degree} C, 29% are between 20{degree} and 30{degree}C, and 42% are between 10{degree} and 20{degree} C. Low and moderate temperature wells and springs can be found in nearly all areas of Montana, but most are in the western third of the state. Information sources for the current database include the MBMG Ground Water Information Center, the USGS statewide database, the USGS GEOTHERM database, and new information collected as part of this program. Five areas of Montana were identified for consideration in future investigations of geothermal development. The areas identified are those near Bozeman, Ennis, Butte, Boulder, and Camas Prairie. These areas were chosen based on the potential of the resource and its proximity to population centers.

  20. Geothermal pipeline

    SciTech Connect

    1997-08-01

    The Geothermal Pipeline is a progress and development update from the Geothermal Progress Monitor and includes brief descriptions of various geothermal projects around the world. The following topics are covered: The retirement of Geo-Heat Center Director Paul Lienau, announcement of two upcoming geothermal meetings, and a proposed geothermal power plant project in the Medicine Lake/Glass Mountain area of California. Also included is an article about the Bonneville Power Administration`s settlements with two California companies who had agreed to build geothermal power plants on the federal agency`s behalf, geothermal space heating projects and use of geothermal energy for raising red crayfish in Oregon, and some updates on geothermal projects in Minnesota, Pennsylvania, and China.

  1. Geothermal Energy Summary

    SciTech Connect

    J. L. Renner

    2007-08-01

    Following is complete draft.Geothermal Summary for AAPG Explorer J. L. Renner, Idaho National Laboratory Geothermal energy is used to produce electricity in 24 countries. The United States has the largest capacity (2,544 MWe) followed by Philippines (1,931 MWe), Mexico (953 MWe), Indonesia (797 MWe), and Italy (791 MWe) (Bertani, 2005). When Chevron Corporation purchased Unocal Corporation they became the leading producer of geothermal energy worldwide with projects in Indonesia and the Philippines. The U. S. geothermal industry is booming thanks to increasing energy prices, renewable portfolio standards, and a production tax credit. California (2,244 MWe) is the leading producer, followed by Nevada (243 MWe), Utah (26 MWe) and Hawaii (30 MWe) and Alaska (0.4 MWe) (Bertani, 2005). Alaska joined the producing states with two 0.4 KWe power plants placed on line at Chena Hot Springs during 2006. The plant uses 30 liters per second of 75°C water from shallow wells. Power production is assisted by the availability of gravity fed, 7°C cooling water (http://www.yourownpower.com/) A 13 MWe binary power plant is expected to begin production in the fall of 2007 at Raft River in southeastern Idaho. Idaho also is a leader in direct use of geothermal energy with the state capital building and several other state and Boise City buildings as well as commercial and residential space heated using fluids from several, interconnected geothermal systems. The Energy Policy Act of 2005 modified leasing provisions and royalty rates for both geothermal electrical production and direct use. Pursuant to the legislation the Bureau of Land management and Minerals Management Service published final regulations for continued geothermal leasing, operations and royalty collection in the Federal Register (Vol. 72, No. 84 Wednesday May 2, 2007, BLM p. 24358-24446, MMS p. 24448-24469). Existing U. S. plants focus on high-grade geothermal systems located in the west. However, interest in non

  2. Geothermal well log interpretation state of the art. Final report

    SciTech Connect

    Sanyal, S.K.; Wells, L.E.; Bickham, R.E.

    1980-01-01

    An in-depth study of the state of the art in Geothermal Well Log Interpretation has been made encompassing case histories, technical papers, computerized literature searches, and actual processing of geothermal wells from New Mexico, Idaho, and California. A classification scheme of geothermal reservoir types was defined which distinguishes fluid phase and temperature, lithology, geologic province, pore geometry, salinity, and fluid chemistry. Major deficiencies of Geothermal Well Log Interpretation are defined and discussed with recommendations of possible solutions or research for solutions. The Geothermal Well Log Interpretation study and report has concentrated primarily on Western US reservoirs. Geopressured geothermal reservoirs are not considered.

  3. Statewide Needs Assessment: A Multimethodological Approach.

    ERIC Educational Resources Information Center

    Watson, Donna J. R.; Bunch, Michael B.

    A statewide assessment was made of specific nutrition education and training needs in Maryland public schools. The approach used allowed an examination of both needs and possible solutions, examined needs which required multiple solutions, and identified resources which could address multiple needs. This multimethodological approach included site…

  4. A Statewide Nutrient Analysis of Children's Diets.

    ERIC Educational Resources Information Center

    Lai, Morris K.; Shimabukuro, Sandy K.

    A statewide assessment of the nutrition education and training needs of children, teachers, and food service personnel in Hawaiian schools was conducted through surveys of administrators, teachers, food service managers, school nurses, students, parents, community agencies, an evaluation of classroom materials, a literature search, and a 24-hour…

  5. Californians & Higher Education. PPIC Statewide Survey

    ERIC Educational Resources Information Center

    Baldassare, Mark; Bonner, Dean; Petek, Sonja; Shrestha, Jui

    2011-01-01

    This survey was conducted with funding from The James Irvine Foundation. Its goal is to inform state policymakers, encourage discussion, and raise public awareness about Californians' opinions on issues affecting the state's public colleges and universities. It is the fifth annual PPIC (Public Policy Institute of California) Statewide Survey on…

  6. Working Statewide to Boost Graduation Rates

    ERIC Educational Resources Information Center

    MacIver, Martha Abele; Groginsky, Scott

    2011-01-01

    The Colorado Graduates Initiative demonstrates seven factors that must be present to build an effective statewide collaborative effort to increase high school graduation rates. These include: 1) Leadership to unite diverse stakeholders on specific, common goals and catalyze them into action; 2) A focus on data, particularly on actionable, early…

  7. Mississippi Statewide Comprehensive Outdoor Recreation Plan.

    ERIC Educational Resources Information Center

    Tatum, W. Hugh; And Others

    Objectives of the official comprehensive outdoor recreation plan for the State of Mississippi are (1) to guide recreational development in Mississippi in an orderly fashion on a statewide level; (2) to survey public, semipublic, commercial, and private outdoor recreational opportunities; (3) to determine recreational needs for meeting present and…

  8. 34 CFR 361.25 - Statewideness.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Statewideness. 361.25 Section 361.25 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF SPECIAL EDUCATION AND REHABILITATIVE SERVICES, DEPARTMENT OF EDUCATION STATE VOCATIONAL REHABILITATION SERVICES PROGRAM State Plan...

  9. 42 CFR 431.50 - Statewide operation.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 4 2011-10-01 2011-10-01 false Statewide operation. 431.50 Section 431.50 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL ASSISTANCE PROGRAMS STATE ORGANIZATION AND GENERAL ADMINISTRATION General...

  10. Californians & Higher Education. PPIC Statewide Survey

    ERIC Educational Resources Information Center

    Baldassare, Mark; Bonner, Dean; Petek, Sonja; Willcoxon, Nicole

    2010-01-01

    This edition of the PPIC (Public Policy Institute of California) Statewide Survey is the fourth in a series of surveys funded by The William and Flora Hewlett Foundation focusing on higher education. This survey seeks to inform state policymakers, encourage discussion, and raise public awareness about the state's public higher education…

  11. The Status of Statewide Subscription Databases

    ERIC Educational Resources Information Center

    Krueger, Karla S.

    2012-01-01

    This qualitative content analysis presents subscription databases available to school libraries through statewide purchases. The results may help school librarians evaluate grade and subject-area coverage, make comparisons to recommended databases, and note potential suggestions for their states to include in future contracts or for local…

  12. Development of a Statewide Space Model.

    ERIC Educational Resources Information Center

    Alexander, Lynda; Lewis, Tim

    2000-01-01

    This article reviews development and use of a statewide (Texas) space model for long-term planning, regulating new construction, and formula appropriations for general academic and, more recently, health-related institutions. Considers the work and recommendation of a 1998 study committee on space needs of health facilities, the Commissioner's…

  13. Advanced geothermal technologies

    NASA Astrophysics Data System (ADS)

    Whetten, J. T.; Murphy, H. D.; Hanold, R. J.; Myers, C. W.; Dunn, J. C.

    Research and development in advanced technologies for geothermal energy production continue to increase the energy production options for the Nation. The high-risk investment over the past few years by the U.S. Department of Energy in geopressured, hot dry rock, and magma energy resources is producing new means to lower production costs and to take advantage of these resources. The Nation has far larger and more regionally extensive geothermal resources than heretofore realized. At the end of a short 30-day closed-loop flow test, the manmade hot dry rock reservoir at Fenton Hill, New Mexico was producing 10 MW thermal, and still climbing, proving the technical feasibility of this new technology. The scientific feasibility of magma energy extraction was demonstrated, and new field tests to evaluate this technology are planned. Analysis and field tests confirm the viability of geopressured-geothermal energy and the prospect that many dry-hole or depleted petroleum wells can be turned into producing geopressured-geothermal wells. Technological advances achieved through hot dry rock, magma, geopressured, and other geothermal research are making these resources and conventional hydrothermal resources more competitive.

  14. Application of HydroGeoSphere to model the response to anthropogenic climate change of three-dimensional hydrological processes in the geologically, geothermally, and topographically complex Valles Caldera super volcano, New Mexico: Preliminary results

    NASA Astrophysics Data System (ADS)

    Wine, M.; Cadol, D. D.

    2014-12-01

    Anthropogenic climate change is expected to reduce streamflow in the southwestern USA due to reduction in precipitation and increases in evaporative demand. Understanding the effects of climate change in this region is particularly important for mountainous areas since these are primary sources of recharge in arid and semi-arid environments. Therefore we undertook to model effects of climate change on the hydrological processes in Valles Caldera (448 km2), located in the Jemez Mountains of northern New Mexico. In Valles Caldera modeling the surficial, hydrogeological, and geothermal processes that influence hydrologic fluxes each present challenges. The surficial dynamics of evaporative demand and snowmelt both serve to control recharge dynamics, but are complicated by the complex topography and spatiotemporal vegetation dynamics. Complex factors affecting evaporative demand include leaf area index, temperature, albedo, and radiation affected by topographic shading; all of these factors vary in space and time. Snowmelt processes interact with evaporative demand and geology to serve as an important control on streamflow generation, but modeling the effects of spatiotemporal snow distributions on streamflow generation remains a challenge. The complexity of Valles Caldera's geology—and its associated hydraulic properties—rivals that of its surficial hydrologic forcings. Hydrologically important geologic features that have formed in the Valles Caldera are three-dimensionally intricate and include a dense system of faults, alluvium, landslides, lake deposits, and features associated with the eruption and collapse of this super volcano. Coupling geothermally-driven convection to the hydrologic cycle in this still-active geothermal system presents yet an additional challenge in modeling Valles Caldera. Preliminary results from applying the three-dimensional distributed hydrologic finite element model HydroGeoSphere to a sub-catchment of Valles Caldera will be

  15. Geothermal Energy

    SciTech Connect

    Steele, B.C.; Harman, G.; Pitsenbarger, J.

    1996-02-01

    Geothermal Energy Technology (GET) announces on a bimonthly basis the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production.

  16. Geothermal Energy.

    ERIC Educational Resources Information Center

    Reed, Marshall J.

    1979-01-01

    During 1978, exploration for geothermal energy continued at the same moderately low level of the past few years in most countries. The U.S. is the only country where the development of geothermal energy depends on private industry. (BB)

  17. Geothermal systems

    NASA Technical Reports Server (NTRS)

    Mohl, C.

    1978-01-01

    Several tasks of JPL related to geothermal energy are discussed. The major task is the procurement and test and evaluation of a helical screw drive (wellhead unit). A general review of geothermal energy systems is given. The presentation focuses attention on geothermal reservoirs in California, with graphs and charts to support the discussion. Included are discussions on cost analysis, systems maintenance, and a comparison of geothermal and conventional heating and cooling systems.

  18. Idaho Geothermal Commercialization Program. Idaho geothermal handbook

    SciTech Connect

    Hammer, G.D.; Esposito, L.; Montgomery, M.

    1980-03-01

    The following topics are covered: geothermal resources in Idaho, market assessment, community needs assessment, geothermal leasing procedures for private lands, Idaho state geothermal leasing procedures - state lands, federal geothermal leasing procedures - federal lands, environmental and regulatory processes, local government regulations, geothermal exploration, geothermal drilling, government funding, private funding, state and federal government assistance programs, and geothermal legislation. (MHR)

  19. Geothermal Energy.

    ERIC Educational Resources Information Center

    Bufe, Charles Glenn

    1983-01-01

    Major activities, programs, and conferences in geothermal energy during 1982 are highlighted. These include first comprehensive national assessment of U.S. low-temperature geothermal resources (conducted by U.S. Geological Survey and Department of Energy), map production by U.S. Geological Survey, geothermal plant production, and others. (JN)

  20. A statewide cancer registry: the Pennsylvania experience.

    PubMed

    Powell, R L; Dietrich, R J

    1990-12-01

    Pennsylvania has been successful in establishing a statewide cancer registry. The success of this registry results from the efforts of many different groups. The program has benefited from strong legislation making cancer a reportable disease and assigning the responsibility of reporting to hospitals. The PCR has implemented many initiatives to ensure that the cooperation of hospitals in operating the system is maintained, and that there is sufficient knowledge among hospital personnel to ensure complete casefinding. As the amount of statewide incidence data is increased over several years, the utility of these data for program planning and epidemiologic studies will increase greatly. The establishment and ongoing operation of the PCR ensure that cancer incidence data are available in providing answers to questions such as some of those asked following the accident at Three Mile Island. PMID:10108500

  1. Land subsidence in the Cerro Prieto Geothermal Field, 1 Baja California, Mexico, from 1994 to 2005. An integrated analysis of DInSAR, levelingand geological data.

    SciTech Connect

    Sarychikhina, O; Glowacka, E; Mellors, R; Vidal, F S

    2011-03-03

    Cerro Prieto is the oldest and largest Mexican geothermal field in operation and has been producing electricity since 1973. The large amount of geothermal fluids extracted to supply steam to the power plants has resulted in considerable deformation in and around the field. The deformation includes land subsidence and related ground fissuring and faulting. These phenomena have produced severe damages to infrastructure such as roads, irrigation canals and other facilities. In this paper, the technique of Differential Synthetic Aperture Radar Interferometry (DInSAR) is applied using C-band ENVISAR ASAR data acquired between 2003 and 2006 to determine the extent and amount of land subsidence in the Mexicali Valley near Cerro Prieto Geothermal Field. The DInSAR results were compared with published data from precise leveling surveys (1994- 1997 and 1997-2006) and detailed geological information in order to improve the understanding of temporal and spatial distributions of anthropogenic subsidence in the Mexicali Valley. The leveling and DInSAR data were modeled to characterize the observed deformation in terms of fluid extraction. The results confirm that the tectonic faults control the spatial extent of the observed subsidence. These faults likely act as groundwater flow barriers for aquifers and reservoirs. The shape of the subsiding area coincides with the Cerro Prieto pull-apart basin. In addition, the spatial pattern of the subsidence as well as changes in rate are highly correlated with the development of the Cerro Prieto Geothermal Field.

  2. Land subsidence in the Cerro Prieto Geothermal Field, Baja California, Mexico, from 1994 to 2005: An integrated analysis of DInSAR, leveling and geological data

    NASA Astrophysics Data System (ADS)

    Sarychikhina, Olga; Glowacka, Ewa; Mellors, Robert; Vidal, Francisco Suárez

    2011-07-01

    Cerro Prieto is the oldest and largest Mexican geothermal field in operation and has been producing electricity since 1973. The large amount of geothermal fluids extracted to supply steam to the power plants has resulted in considerable deformation in and around the field. The deformation includes land subsidence and related ground fissuring and faulting. These phenomena have produced severe damages to the local infrastructure such as roads, irrigation canals and other facilities. In this paper, the technique of Differential Synthetic Aperture Radar Interferometry (DInSAR) is applied using C-band ENVISAR ASAR data acquired between 2003 and 2006 to determine the extent and amount of land subsidence in the Mexicali Valley near Cerro Prieto Geothermal Field. The DInSAR results were compared with published data from precise leveling surveys (1994-1997 and 1997-2006) and detailed geological information in order to improve understanding of the temporal and spatial distributions of anthropogenic subsidence in the Mexicali Valley. The leveling and DInSAR data were modeled to characterize the observed deformation in terms of fluid extraction. The results confirm that the tectonic faults control the spatial extent of the observed subsidence. These faults likely act as groundwater flow barriers for aquifers and reservoirs. The shape of the subsiding area coincides with the Cerro Prieto pull-apart basin. In addition, the changes in spatial pattern and rate of the subsidence are correlated with the development of the Cerro Prieto Geothermal Field.

  3. Statewide air medical transports for Massachusetts.

    PubMed

    Garthe, Elizabeth; Mango, Nicholas K; Prenney, Brad

    2002-01-01

    In 1997, the Massachusetts Department of Public Health (MDPH) established a process to centralize air medical transport information. This database is one of the first statewide, population-based sources for civilian rotary-wing air medical transports (U.S. Coast Guard, police, and military missions are not included). The purpose of this database is to facilitate MDPH review of air medical transport service utilization, with input from a multidisciplinary committee. This article discusses the challenges in producing uniform data from multiple service submissions and presents aggregate "baseline" utilization information for 1996. These data served as a starting point for later studies using data linkage. This indexed article is the first to report statewide, population-based data for all types of air medical helicopter transports. The only other indexed "statewide air medical transport" paper focused on scene transports to trauma centers in Pennsylvania. A previous article by the authors in the July-September 2000 Air Medical Journal provided an overview of air medical transports for fatal motor vehicle crashes for 1 region of the state.

  4. Symposium in the field of geothermal energy

    SciTech Connect

    Ramirez, Miguel; Mock, John E.

    1989-04-01

    Mexico and the US are nations with abundant sources of geothermal energy, and both countries have progressed rapidly in developing their more accessible resources. For example, Mexico has developed over 600 MWe at Cerro Prieto, while US developers have brought in over 2000 MWe at the Geysers. These successes, however, are only a prologue to an exciting future. All forms of energy face technical and economic barriers that must be overcome if the resources are to play a significant role in satisfying national energy needs. Geothermal energy--except for the very highest grade resources--face a number of barriers, which must be surmounted through research and development. Sharing a common interest in solving the problems that impede the rapid utilization of geothermal energy, Mexico and the US agreed to exchange information and participate in joint research. An excellent example of this close and continuing collaboration is the geothermal research program conducted under the auspices of the 3-year agreement signed on April 7, 1986 by the US DOE and the Mexican Comision Federal de Electricidad (CFE). The major objectives of this bilateral agreement are: (1) to achieve a thorough understanding of the nature of geothermal reservoirs in sedimentary and fractured igneous rocks; (2) to investigate how the geothermal resources of both nations can best be explored and utilized; and (3) to exchange information on geothermal topics of mutual interest.

  5. Active metasomatism in the Cerro Prieto geothermal system, Baja California, Mexico: A telescoped low-pressure, low-temperature metamorphic facies series

    NASA Astrophysics Data System (ADS)

    Schiffman, P.; Elders, W. A.; Williams, A. E.; McDowell, S. D.; Bird, D. K.

    1984-01-01

    In the Cerro Prieto geothermal field, carbonate-cemented, quartzofeldspathic sediments of the Colorado River delta are being actively metasomatized into calc-silicate metamorphic rocks by reaction with alkali chloride brines between 200 and 370 °C, at low fluid and lithostatic pressures and low oxygen fugacities. Our petrologic investigations of drill cores and cuttings from more than 50 wells in this field identified a prograde series of zones that include as index minerals wairakite, epidote, prehnite, and clinopyroxene. Associated divariant mineral assemblages are indicative of a very low pressure, low-temperature metamorphic facies series spanning the clay-carbonate, zeolite, greenschist, and amphibolite facies. This hydro-thermal facies series, which is now recognized in other active geothermal systems, is characterized by temperature-telescoped dehydration and decarbonation. Its equivalent can now be sought in fossil hydrothermal systems.

  6. Development of a Plan to Implement Enhanced Geothermal Systems (EGS) in the Animas Valley, New Mexico - Final Report - 07/26/2000 - 02/01/2001

    SciTech Connect

    Schochet, Daniel N.; Cunniff, Roy A.

    2001-02-01

    The concept of producing energy from hot dry rock (HDR), originally proposed in 1971 at the Los Alamos National Laboratory, contemplated the generation of electric power by injecting water into artificially created fractures in subsurface rock formations with high heat flow. Recognizing the inherent difficulties associated with HDR, the concept of Enhanced Geothermal Systems was proposed. This embraces the idea that the amount of permeability and fluid in geothermal resources varies across a spectrum, with HDR at one end, and conventional hydrothermal systems at the other. This report provides a concept for development of a ''Combined Technologies Project'' with construction and operation of a 6 MW (net) binary-cycle geothermal power plant that uses both the intermediate-depth hydrothermal system at 1,200 to 3,300 feet and a deeper EGS capable system at 3,000 to 4,000 feet. Two production/injection well pairs will be drilled, one couplet for the hydrothermal system, and one for the E GS system. High-pressure injection may be required to drive fluid through the EGS reservoir from the injection to the production well.

  7. Investigation of deep permeable strata in the permian basin for future geothermal energy reserves

    SciTech Connect

    Erdlac, Richard J., Jr.; Swift, Douglas B.

    1999-09-23

    This project will investigate a previously unidentified geothermal energy resource, opening broad new frontiers to geothermal development. Data collected by industry during oil and gas development demonstrate deep permeable strata with temperatures {ge} 150 C, within the optimum window for binary power plant operation. The project will delineate Deep Permeable Strata Geothermal Energy (DPSGE) assets in the Permian Basin of western Texas and southeastern New Mexico. Presently, geothermal electrical power generation is limited to proximity to shallow, high-temperature igneous heat sources. This geographically restricts geothermal development. Delineation of a new, less geographically constrained geothermal energy source will stimulate geothermal development, increasing available clean, renewable world energy reserves. This proposal will stimulate geothermal reservoir exploration by identifying untapped and unrealized reservoirs of geothermal energy. DPSGE is present in many regions of the United States not presently considered as geothermally prospective. Development of this new energy source will promote geothermal use throughout the nation.

  8. 1985 international symposium on geothermal energy: international volume

    SciTech Connect

    Stone, C.

    1985-01-01

    This book presents information on geothermal electric power and discusses direct uses of geothermal energy. Country update reports are provided and international cooperation reports include topics such as: selected titles for a basic geothermal library, the role of the United Nations in the field of geothermal resources exploration in developing countries, and geothermal training at the International Institute for Geothermal research. International invited papers in this volume include: Hot Dry Rock--A European Perspective; A Summary of Modeling Studies of the East Okkaria Geothermal Field, Kenya; and The Latest Development of the Los Asufres Geothermal Field in Mexico. General papers are presented from Europe, the Western Pacific, Africa, North America, India, China, and Southeast Asia.

  9. Materials selection guidelines for geothermal energy utilization systems

    SciTech Connect

    Ellis, P.F. II; Conover, M.F.

    1981-01-01

    This manual includes geothermal fluid chemistry, corrosion test data, and materials operating experience. Systems using geothermal energy in El Salvador, Iceland, Italy, Japan, Mexico, New Zealand, and the United States are described. The manual provides materials selection guidelines for surface equipment of future geothermal energy systems. The key chemical species that are significant in determining corrosiveness of geothermal fluids are identified. The utilization modes of geothermal energy are defined as well as the various physical fluid parameters that affect corrosiveness. Both detailed and summarized results of materials performance tests and applicable operating experiences from forty sites throughout the world are presented. The application of various non-metal materials in geothermal environments are discussed. Included in appendices are: corrosion behavior of specific alloy classes in geothermal fluids, corrosion in seawater desalination plants, worldwide geothermal power production, DOE-sponsored utilization projects, plant availability, relative costs of alloys, and composition of alloys. (MHR)

  10. 75 FR 417 - National Protection and Programs Directorate; Statewide Communication Interoperability Plan...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-05

    ... SECURITY National Protection and Programs Directorate; Statewide Communication Interoperability Plan...: Statewide Communication Interoperability Plan Implementation Report. Form: Not Applicable. OMB Number: 1670... Emergency Communications Grant Program (IECGP) (6 U.S.C. 579) comply with the Statewide...

  11. Geothermal Information Dissemination and Outreach

    SciTech Connect

    Ted J. Clutter

    2005-02-18

    Project Purpose. To enhance technological and topical information transfer in support of industry and government efforts to increase geothermal energy use in the United States (power production, direct use, and geothermal groundsource heat pumps). Project Work. GRC 2003 Annual Meeting. The GRC convened the meeting on Oct. 12-15, 2003, at Morelia's Centro de Convenciones y ExpoCentro in Mexico under the theme, International Collaboration for Geothermal Energy in the Americas. The event was also sponsored by the Comision Federal de Electricidad. ~600 participants from more than 20 countries attended the event. The GRC convened a Development of Geothermal Projects Workshop and Geothermal Exploration Techniques Workshop. GRC Field Trips included Los Azufres and Paricutin Volcano on Oct. 11. The Geothermal Energy Association (Washington, DC) staged its Geothermal Energy Trade Show. The Annual Meeting Opening Session was convened on Oct. 13, and included the governor of Michoacan, the Mexico Assistant Secretary of Energy, CFE Geothermal Division Director, DOE Geothermal Program Manager, and private sector representatives. The 2003 Annual Meeting attracted 160 papers for oral and poster presentations. GRC 2004. Under the theme, Geothermal - The Reliable Renewable, the GRC 2004 Annual Meeting convened on Aug. 29-Sept. 1, 2004, at the Hyatt Grand Champions Resort at Indian Wells, CA. Estimated total attendance (including Trade Show personnel, guests and accompanying persons) was ~700. The event included a workshop, Geothermal Production Well Pump Installation, Operation and Maintenance. Field trips went to Coso/Mammoth and Imperial Valley/Salton Sea geothermal fields. The event Opening Session featured speakers from the U.S. Department of Energy, U.S. Department of the Interior, and the private sector. The Geothermal Energy Association staged its Geothermal Energy Trade Show. The Geothermal Education Office staged its Geothermal Energy Workshop. Several local radio and TV

  12. Evolution of the geothermal fluids at Los Azufres, Mexico, as traced by noble gas isotopes, δ18O, δD, δ13C and 87Sr/86Sr

    NASA Astrophysics Data System (ADS)

    Pinti, D. L.; Castro, M. C.; Shouakar-Stash, O.; Tremblay, A.; Garduño, V. H.; Hall, C. M.; Hélie, J.-F.; Ghaleb, B.

    2013-01-01

    Isotopes of noble gases, CO2, H2O and Sr were measured in 10 geothermal wells and 8 hot springs, fumaroles and mud volcanoes at Los Azufres, the second most important geothermal field in Mexico. The aim of this study is to provide additional information on fluid circulation in the field and surrounding areas (Araró hot springs), as well as on physical processes such as boiling, steam separation and invasion of re-injected brines following over 25 years of geothermal fluid exploitation. Mantle helium dominates in fluids from the northern production zone of Marítaro, with measured 3He/4He ratios up to 7 Ra (where Ra is the atmospheric ratio of 1.386 × 10- 6). 3He/4He ratios are positively correlated with 87Sr/86Sr ratios and with δD and δ18O. These relationships suggest that Los Azufres fluids represent a mixing between primary magmatic 3He-rich fluids and groundwater currently discharging at Araró hot springs and enriched in radiogenic 4He acquired from Miocene andesites. Unusually high He ratios together with radiogenic Sr isotopic ratios suggest that thermal waters acquired mantle He from deep-seated parent magmas and radiogenic Sr possibly during their uprising through the metamorphic basement. 40Ar/36Ar ratios of 366 to 429 measured in two wells indicate either mantle-derived argon or a radiogenic 40Ar in situ component, suggesting the local presence of an older crustal fluid component in the northern part of the field. Ne, Kr and Xe are entirely of atmospheric origin, but processes of boiling, steam separation and re-injection of used brines have led to fractionation of their elemental abundances. Comparison with previous studies suggests that the boiling zone in the northern production zone is currently extending further north (Marítaro hot springs). In the southwestern productive zone, re-injected brines might account for more than 90% of the exploited fluids.

  13. Energia geotermica at the present time: Geothermal Today (Spanish version); La energia geotermica en la actualidad

    SciTech Connect

    Not Available

    2003-09-01

    This outreach publication highlights federal program milestones and accomplishments of the DOE Geothermal Technologies Program for 2003. This is a special 8-page Spanish supplement for the audience at the Geothermal Resources Council/Geothermal Energy Association Annual Meeting and Industry Exhibit, Morelia, Mexico.

  14. Projected Statewide Impact of "Opportunity Culture" School Models

    ERIC Educational Resources Information Center

    Holly, Christen; Dean, Stephanie; Hassel, Emily Ayscue; Hassel, Bryan C.

    2014-01-01

    This brief estimates the impact of a statewide implementation of Opportunity Culture models, using North Carolina as an example. Impacts estimated include student learning outcomes, gross state product, teacher pay, and other career characteristics, and state income tax revenue. Estimates indicate the potential for a statewide transition to…

  15. Fluid geochemistry and soil gas fluxes (CO2-CH4-H2S) at a promissory Hot Dry Rock Geothermal System: The Acoculco caldera, Mexico

    NASA Astrophysics Data System (ADS)

    Peiffer, L.; Bernard-Romero, R.; Mazot, A.; Taran, Y. A.; Guevara, M.; Santoyo, E.

    2014-09-01

    The Acoculco caldera has been recognized by the Mexican Federal Electricity Company (CFE) as a Hot Dry Rock Geothermal System (HDR) and could be a potential candidate for developing an Enhanced Geothermal System (EGS). Apart from hydrothermally altered rocks, geothermal manifestations within the Acoculco caldera are scarce. Close to ambient temperature bubbling springs and soil degassing are reported inside the caldera while a few springs discharge warm water on the periphery of the caldera. In this study, we infer the origin of fluids and we characterize for the first time the soil degassing dynamic. Chemical and isotopic (δ18O-δD) analyses of spring waters indicate a meteoric origin and the dissolution of CO2 and H2S gases, while gas chemical and isotopic compositions (N2/He, 3He/4He, 13C, 15N) reveal a magmatic contribution with both MORB- and arc-type signatures which could be explained by an extension regime created by local and regional fault systems. Gas geothermometry results are in agreement with temperature measured during well drilling (260 °C-300 °C). Absence of well-developed water reservoir at depth impedes re-equilibration of gases upon surface. A multi-gas flux survey including CO2, CH4 and H2S measurements was performed within the caldera. Using the graphical statistical analysis (GSA) approach, CO2 flux measurements were classified in two populations. Population A, representing 95% of measured fluxes is characterized by low values (mean: 18 g m- 2 day- 1) while the remaining 5% fluxes belonging to Population B are much higher (mean: 5543 g m- 2 day- 1). This low degassing rate probably reflects the low permeability of the system, a consequence of the intense hydrothermal alteration observed in the upper 800 m of volcanic rocks. An attempt to interpret the origin and transport mechanism of these fluxes is proposed by means of flux ratios as well as by numerical modeling. Measurements with CO2/CH4 and CO2/H2S flux ratios similar to mass ratios

  16. Geothermal Energy

    SciTech Connect

    Steele, B.C.; Pichiarella, L.S.; Kane, L.S.; Henline, D.M.

    1995-01-01

    Geothermal Energy (GET) announces on a bimonthly basis the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production. This publication contains the abstracts of DOE reports, journal articles, conference papers, patents, theses, and monographs added to the Energy Science and Technology Database during the past two months.

  17. Geothermal Energy.

    ERIC Educational Resources Information Center

    Nemzer, Marilyn; Page, Deborah

    This curriculum unit describes geothermal energy in the context of the world's energy needs. It addresses renewable and nonrenewable energy sources with an in-depth study of geothermal energy--its geology, its history, and its many uses. Included are integrated activities involving science, as well as math, social studies, and language arts.…

  18. GILA WILDERNESS, NEW MEXICO.

    USGS Publications Warehouse

    Ratte, James C.; Stotelmeyer, Ronald B.

    1984-01-01

    Geologic, geochemical and geophysical indicators delineated during a study of the Gila Wilderness, New Mexico indicate that there are areas of probable and substantiated mineral-resource potential for gold, silver, tellurium, molybdenum, copper, lead, zinc, and fluorite. The areas which have resource potential lie along both sides of the western and southwestern boundaries of the wilderness, and adjacent to the access corridor to the Gila Cliff Dwellings National Monument in the eastern part of the wilderness. Areas marked by geothermal springs along Turkey Creek and Middle Fork of the Gila River have a probable potential for geothermal energy. No other energy-resource potential was identified within the study area.

  19. State-coupled low-temperature geothermal-resource assessment program, Fiscal Year 1979. Final technical report

    SciTech Connect

    Icerman, L.; Starkey, A.; Trentman, N.

    1980-10-01

    The results of low-temperature geothermal energy resource assessment efforts in New Mexico during the period from 1 October 1978 to 30 June 1980 are summarized. The results of the efforts to extend the inventory of geothermal energy resources in New Mexico to low-temperature geothermal reservoirs with the potential for direct heating applications are given. These efforts focused on compiling basic geothermal data and new hydrology and temperature gradient data throughout New Mexico in a format suitable for direct transfer to the US Geological Survey and the National Oceanic and Atmospheric Administration for inclusion in the GEOTHERM data file and for preparation of New Mexico low-temperature geothermal resources maps. The results of geothermal reservoir confirmation studies are presented. (MHR)

  20. Analysis of production decline in geothermal reservoirs

    SciTech Connect

    Zais, Elliot J.; Bodvarsson, Gunnar

    1980-09-01

    The major objectives of the Decline Curve project were to: (1) test the decline analysis methods used in the petroleum industry on geothermal production data; (2) examine and/or develop new analysis methods; and (3) develop a standard operating procedure for analyzing geothermal production data. Various analysis methods have long been available but they have not been tested on geothermal data because of the lack of publicly available data. The recent release to publication of substantial data sets from Wairakei, New Zealand, Cerro Prieto, Mexico and The Geysers, USA has made this study possible. Geothermal reservoirs are quite different from petroleum reservoirs in many ways so the analysis methods must be tested using geothermal data.

  1. SMART Plan. Statewide Management of Automated Record Transfer: A Plan To Automate and Transfer Student Records Statewide.

    ERIC Educational Resources Information Center

    Nevada State Dept. of Education, Carson City. Planning, Research and Evaluation Branch.

    As of 1993, Nevada had no systems for statewide automation and transfer of student records. This guide book presents findings of a collaborative study, conducted by the Nevada Department of Education and local school districts, that explored the need for and feasibility of developing a statewide system for automating and transferring student…

  2. Spatio-temporal evolution of anthropogenic deformation around Cerro Prieto geothermal field in the Mexicali Valley, B.C., Mexico, between 1993 and 2009 from DInSAR and leveling.

    NASA Astrophysics Data System (ADS)

    Sarychikhina, Olga; Glowacka, Ewa; Robles, Braulio; Mojarro, Jose

    2014-05-01

    Land subsidence is an environmental hazard which could be caused by withdrawal of large amounts of fluid from beneath the earth's surface. Land subsidence is an issue in several geothermal fields worldwide (e.g., Geysers, USA (Mossop and Segall, 1997), Wairakei-Tauhara, New Zealand (Allis et al., 2009)). Cerro Prieto geothermal field (CPGF), located in the Mexicali Valley, northwest Mexico, is the oldest and largest Mexican geothermal field in operation and has been producing electricity since 1973. The large amount of geothermal fluids extracted to supply steam to the power plants has resulted in considerable deformation in and around the field (e.g. Glowacka et al., 1996, 1999; Carnec and Fabriol, 1999; Sarychikhina et al., 2011). The deformation includes land subsidence and related ground fissuring and faulting. These phenomena have produced severe damages to the local infrastructure such as roads, irrigation canals and other facilities. Detection of land subsidence and monitoring of the spatial and temporal changes of its pattern and magnitude can provide important information about the dynamics of this process and controlling geological structures. The technique of Differential Synthetic Aperture Radar Interferometry (DInSAR) has been demonstrated to be a very effective technique for measuring ground deformation. This study presents an application of DInSAR interferogram stacking technique to investigate the land subsidence in the Mexicali Valley near CPGF. C-band ENVISAR ASAR images acquired between 2003 and 2009 from the ascending (track 306, frame 639) and descending track (track 84, frame 2961), obtained from the European Space Agency (ESA), as part of ESA CAT-1 project (ID - C1P3508), were used. Gamma ISP and DIFF/GEO software packages were used to calculate differential interferograms from SLC data and for differential interferograms stacking (Wegmüller and Werner, 1997). Eight average annual deformation rate maps were generated for 2005 (descending

  3. Summary of the geology of the San Luis Basin, Colorado-New Mexico with emphasis on the geothermal potential for the Monte Vista Graben. Special Publication 17

    SciTech Connect

    Burroughs, R.L.

    1981-01-01

    The known geologic data of the San Luis Basin are reviewed and related to an understanding of the hydrogeothermal potential of the Alamosa-Monte Vista area. The physiographic setting of the region, the structural framework of the basin, and its influence on the stratigraphic makeup of the rock sequence, which in turn control the occurrence of potential deep water reservoirs, are reviewed. It is suggested that the San Luis Basin was well-developed by Miocene time, and that although the basin was modified by Neogene faulting, it is essentially a late Laramide event having been produced during the Paleogene. Attention is also given to high heat flow along the Rio Grande Rift and to the geothermal gradient of the San Luis Basin. The confined aquifer is then considered in respect to its hydrogeology, water quality, and as to the legal aspects of the system. (LEW)

  4. Recent Vertical Deformation in Mexicali Valley and its Relationship with Tectonics, Seismicity, and the Exploitation of the Cerro Prieto Geothermal Field, Mexico

    NASA Astrophysics Data System (ADS)

    Glowacka, E.; González, J.; Fabriol, H.

    The interpretation of the results of regional and local leveling which began in 1977 in the Mexicali Valley and the local short profile precision leveling which started in 1994 are discussed. The relation of vertical deformations around the Cerro Prieto Geothermal Field (CPGF) and along the Imperial fault, with local tectonics and seismicity in the Mexicali Valley, is reviewed. Also the relation between vertical deformation and fluid operation in the CPGF is analyzed. The subsidence observed in the field seems to be induced by fluid extraction. The way in which fluid production influences surface changes along the Imperial fault is not clear. The possibility that seismicity is triggering subsidence in the area and vertical movement on the Imperial fault is discussed.

  5. Gas geochemistry of the Valles caldera region, New Mexico and comparisons with gases at Yellowstone, Long Valley and other geothermal systems

    USGS Publications Warehouse

    Goff, F.; Janik, C.J.

    2002-01-01

    Noncondensible gases from hot springs, fumaroles, and deep wells within the Valles caldera geothermal system (210-300??C) consist of roughly 98.5 mo1% CO2, 0.5 mol% H2S, and 1 mol% other components. 3He/4He ratios indicate a deep magmatic source (R/Ra up to 6) whereas ??13C-CO2 values (-3 to -5???) do not discriminate between a mantle/magmatic source and a source from subjacent, hydrothermally altered Paleozoic carbonate rocks. Regional gases from sites within a 50-km radius beyond Valles caldera are relatively enriched in CO2 and He, but depleted in H2S compared to Valles gases. Regional gases have R/Ra values ???1.2 due to more interaction with the crust and/or less contribution from the mantle. Carbon sources for regional CO2 are varied. During 1982-1998, repeat analyses of gases from intracaldera sites at Sulphur Springs showed relatively constant CH4, H2, and H2S contents. The only exception was gas from Footbath Spring (1987-1993), which experienced increases in these three components during drilling and testing of scientific wells VC-2a and VC-2b. Present-day Valles gases contain substantially less N2 than fluid inclusion gases trapped in deep, early-stage, post-caldera vein minerals. This suggests that the long-lived Valles hydrothermal system (ca. 1 Myr) has depleted subsurface Paleozoic sedimentary rocks of nitrogen. When compared with gases from many other geothermal systems, Valles caldera gases are relatively enriched in He but depleted in CH4, N2 and Ar. In this respect, Valles gases resemble end-member hydrothermal and magmatic gases discharged at hot spots (Galapagos, Kilauea, and Yellowstone). Published by Elsevier Science B.V.

  6. Statewide Hospital Discharge Data: Collection, Use, Limitations, and Improvements

    PubMed Central

    Andrews, Roxanne M

    2015-01-01

    Objectives To provide an overview of statewide hospital discharge databases (HDD), including their uses in health services research and limitations, and to describe Agency for Healthcare Research and Quality (AHRQ) Enhanced State Data grants to address clinical and race–ethnicity data limitations. Principal Findings Almost all states have statewide HDD collected by public or private data organizations. Statewide HDD, based on the hospital claim with state variations, contain useful core variables and require minimal collection burden. AHRQ’s Healthcare Cost and Utilization Project builds uniform state and national research files using statewide HDD. States, hospitals, and researchers use statewide HDD for many purposes. Illustrating researchers’ use, during 2012–2014, HSR published 26 HDD-based articles on health policy, access, quality, clinical aspects of care, race–ethnicity and insurance impacts, economics, financing, and research methods. HDD have limitations affecting their use. Five AHRQ grants focused on enhancing clinical data and three grants aimed at improving race–ethnicity data. Conclusion ICD-10 implementation will significantly affect the HDD. The AHRQ grants, information technology advances, payment policy changes, and the need for outpatient information may stimulate other statewide HDD changes. To remain a mainstay of health services research, statewide HDD need to keep pace with changing user needs while minimizing collection burdens. PMID:26150118

  7. Summary of geothermal exploration activity in the state of Washington from 1978 to 1983

    SciTech Connect

    Korosec, M.A.

    1984-01-01

    During the course of conducting the statewide reconnaissance study of Washington's potential geothermal resources, several specific areas and broader regions have been identified as targets which warrant a more concentrated effort. Over the past three years, the program has continued to identify new sites, but has concentrated on better defining the resource potential of the best areas. The locations of these geothermal areas are shown, and the level of progress for each area is shown, expressed as a percentage of completion for the various exploration tasks. Descriptions of the geothermal target areas are presented.

  8. Geothermal heating

    SciTech Connect

    Aureille, M.

    1982-01-01

    The aim of the study is to demonstrate the viability of geothermal heating projects in energy and economic terms and to provide nomograms from which an initial estimate may be made without having to use data-processing facilities. The effect of flow rate and temperature of the geothermal water on drilling and on the network, and the effect of climate on the type of housing are considered.

  9. The geochemistry and isotope hydrology of the Southern Mexicali Valley in the area of the Cerro Prieto, Baja California (Mexico) geothermal field

    NASA Astrophysics Data System (ADS)

    Portugal, Enrique; Izquierdo, Georgina; Truesdell, Alfred; Álvarez, Julio

    2005-11-01

    Groundwaters from the phreatic aquifer within and surrounding of the Cerro Prieto geothermal field were analyzed geochemically and isotopically in order to establish a hydrodynamic model of the study zone, which is located in the Mexicali Valley between 655,000-685,000 m E-W and 3,605,000-3,576,000 m N-S relative to UTM coordinates. Based on their chemical composition three types of water were recognized: chloride, sulfate and bicarbonate. However four groups of water were identified on a statistical multi-variable method of cluster analysis (A-D). The average temperature is 25 °C; with a few exceptions in the south where temperature can be as high as 47 °C. Stable isotope ratios for some waters plot close to the world meteoric line, corresponding to the original unaltered waters of the zone. The hydrogeochemistry varies in relation to three principal processes: evaporation, infiltration of water used in agriculture and rock interaction by reaction with evaporitic deposits. Major quartz, calcite and plagioclase and minor smectite, kaolinite, halite, sylvite and gypsum were identified by X-ray diffraction in lacustrine sediments of the central part of the zone. Chemical modeling indicates saturation with respect to calcite and undersaturation with respect to gypsum. By incorporating chemical and isotope data into geological and isopotential well information, a hydrodynamic model has been postulated. In this hydrodynamic model the water (A) enters the study zone from the east and it is originally of the old Colorado River water. The water samples on which the model is based were draw from agricultural wells that intersected two aquifers, a shallow and a deep one, representing the recharge to the zone. The salinity of the deep aquifer water (B) is lower than that of the shallow aquifer water (C) and so is the stable isotope ratio. The difference is though to be due to dissolution of evaporates, evaporation and possible infiltration of spent agriculture water. Both

  10. State-coupled low temperature geothermal resource assessment program, fiscal year 1982. Final Technical Report

    SciTech Connect

    Icerman, Larry

    1983-08-01

    This report summarizes the results of low-temperature geothermal energy resource assessment efforts in New Mexico during the period from June 15, 1981 through September 30, 1983, under the sponsorship of the US Department of Energy (Contract DE-AS07-78ID01717). The report is divided into four chapters which correspond to the tasks delineated in the contract. Chapter 5 is a brief summary of the tasks performed under this contract during the period October 1, 1978, through June 30, 1983. This work extends the knowledge of low-temperature geothermal reservoirs with the potential for direct heating applications in New Mexico. The research effort focused on compiling basic geothermal data throughout selected areas in New Mexico in a format suitable for direct transfer to the US Geological Survey for inclusion in the GEOTHERM data file and to the National Oceanic and Atmospheric Administration for use with New Mexico geothermal resources maps.

  11. Nebraska Statewide Wind Integration Study: April 2008 - January 2010

    SciTech Connect

    EnerNex Corporation, Knoxville, Tennessee; Ventyx, Atlanta, Georgia; Nebraska Power Association, Lincoln, Nebraska

    2010-03-01

    Wind generation resources in Nebraska will play an increasingly important role in the environmental and energy security solutions for the state and the nation. In this context, the Nebraska Power Association conducted a state-wide wind integration study.

  12. Developing a Promotional Campaign for a Statewide Continuing Education System.

    ERIC Educational Resources Information Center

    Munger, Paul; And Others

    1981-01-01

    Describes activities developed in promoting a statewide continuing education system. They included television and radio advertisements, a user's manual, and a logo. Program evaluation and implementation are also discussed. (CT)

  13. State-coupled low-temperature geothermal-resource-assessment program, Fiscal Year 1980. Final technical report

    SciTech Connect

    Icerman, L.; Starkey, A.; Trentman, N.

    1981-08-01

    Magnetic, gravity, seismic-refraction, and seismic-reflection profiles across the Las Alturas Geothermal Anomaly, New Mexico, are presented. Studies in the Socorro area include the following: seismic measurements of the tertiary fill in the Rio Grande Depression west of Socorro, geothermal data availability for computer simulation in the Socorro Peak KGRA, and ground water circulation in the Socorro Geothermal Area. Regional geothermal exploration in the Truth or Consequences Area includes: geological mapping of the Mud Springs Mountains, hydrogeology of the thermal aquifer, and electrical-resistivity investigation of the geothermal potential. Other studies included are: geothermal exploration with electrical methods near Vado, Chamberino, and Mesquite; a heat-flow study of Dona Ana County; preliminary heat-flow assessment of Southeast Luna County; active fault analysis and radiometric dating of young basalts in southern New Mexico; and evaluation of the geothermal potential of the San Juan Basin in northwestern New Mexico.

  14. Geothermal handbook

    USGS Publications Warehouse

    1976-01-01

    The Bureau of Land Management offered over 400,000 hectares (one million acres) for geothermal exploration and development in 1975, and figure is expected to double this year. The Energy Research and Development Administration hopes for 10-15,000 megawatts of geothermal energy by 1985, which would require, leasing over 16.3 million hectares (37 million acres) of land, at least half of which is federal land. Since there is an 8 to 8-1/2 year time laf between initial exploration and full field development, there would have to be a ten-fold increase in the amount of federal land leased within the next three years. Seventy percent of geothermal potential, 22.3 million hectares (55 million acres), is on federal lands in the west. The implication for the Service are enormous and the problems immediate. Geothermal resource are so widespread they are found to some extent in most biomes and ecosystems in the western United States. In most cases exploitation and production of geothermal resources can be made compatible with fish and wildlife management without damage, if probable impacts are clearly understood and provided for before damage has unwittingly been allowed to occur. Planning for site suitability and concern with specific operating techniques are crucial factors. There will be opportunities for enhancement: during exploration and testing many shallow groundwater bodies may be penetrated which might be developed for wildlife use. Construction equipment and materials needed for enhancement projects will be available in areas heretofore considered remote projects will be available in areas heretofore considered remote by land managers. A comprehensive knowledge of geothermal development is necessary to avoid dangers and seize opportunities. This handbook is intended to serve as a working tool in the field. It anticipated where geothermal resource development will occur in the western United States in the near future. A set of environmental assessment procedures are

  15. Geothermal energy

    NASA Astrophysics Data System (ADS)

    Manzella, A.

    2015-08-01

    Geothermal technologies use renewable energy resources to generate electricity and direct use of heat while producing very low levels of greenhouse-gas (GHG) emissions. Geothermal energy is stored in rocks and in fluids circulating in the underground. Electricity generation usually requires geothermal resources temperatures of over 100°C. For heating, geothermal resources spanning a wider range of temperatures can be used in applications such as space and district heating (and cooling, with proper technology), spa and swimming pool heating, greenhouse and soil heating, aquaculture pond heating, industrial process heating and snow melting. Geothermal technology, which has focused so far on extracting naturally heated steam or hot water from natural hydrothermal reservoirs, is developing to more advanced techniques to exploit the heat also where underground fluids are scarce and to use the Earth as a potential energy battery, by storing heat. The success of the research will enable energy recovery and utilization from a much larger fraction of the accessible thermal energy in the Earth's crust.

  16. Geothermal pipeline

    SciTech Connect

    Not Available

    1992-12-01

    A number of new ideas for geothermal power development and use have been proposed or initiated. British engineers have proposed using North Sea oil rigs as geothermal power stations. These stations would use the low temperature heat from the water that now occupies the former oil reservoirs to generate electricity. NASA recently retrofitted its engine test facility to enable it to use warm water from an underground aquifer as source water in a heat pump. A major policy guideline regarding electricity is issued by the California Energy Commission (CEC) every two years. This year, CEC appears to be revising its method for determining the total societal cost of various electricity supply options. The change may impact geothermal energy usage in a positive way. Virtually untapped geothermal resources in Preston, Idaho will be utilized for warm water catfish farming. Stockton State College in New Jersey will be the site of one of the nation's largest geothermal projects when it is completed in 1993. It is designed to satisfy the college's energy requirements at an estimated cost savings of $300,000 per year. Aquaculture projects using thermal springs are under consideration in Utah and Washington State. Utah may be the site of an alligator farm and Washington State is being considered for raising golden tilapia, a food fish.

  17. Session: Geopressured-Geothermal

    SciTech Connect

    Jelacic, Allan J.; Eaton, Ben A.; Shook, G. Michael; Birkinshaw, Kelly; Negus-de Wys, Jane

    1992-01-01

    This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five presentations: ''Overview of Geopressured-Geothermal'' by Allan J. Jelacic; ''Geothermal Well Operations and Automation in a Competitive Market'' by Ben A. Eaton; ''Reservoir Modeling and Prediction at Pleasant Bayou Geopressured-Geothermal Reservoir'' by G. Michael Shook; ''Survey of California Geopressured-Geothermal'' by Kelly Birkinshaw; and ''Technology Transfer, Reaching the Market for Geopressured-Geothermal Resources'' by Jane Negus-de Wys.

  18. A Statewide Partnership for Implementing Inquiry Science

    NASA Astrophysics Data System (ADS)

    Lytle, Charles

    The North Carolina Infrastructure for Science Education (NC-ISE) is a statewide partnership for implementing standards-based inquiry science using exemplary curriculum materials in the public schools of North Carolina. North Carolina is the 11th most populous state in the USA with 8,000,000 residents, 117 school districts and a geographic area of 48,718 miles. NC-ISE partners include the state education agency, local school systems, three branches of the University of North Carolina, the state mathematics and science education network, businesses, and business groups. The partnership, based upon the Science for All Children model developed by the National Science Resources Centre, was initiated in 1997 for improvement in teaching and learning of science and mathematics. This research-based model has been successfully implemented in several American states during the past decade. Where effectively implemented, the model has led to significant improvements in student interest and student learning. It has also helped reduce the achievement gap between minority and non-minority students and among students from different economic levels. A key program element of the program is an annual Leadership Institute that helps teams of administrators and teachers develop a five-year strategic plan for their local systems. Currently 33 of the117 local school systems have joined the NC-ISE Program and are in various stages of implementation of inquiry science in grades K-8.

  19. Solute fluxes from Tacaná volcano-hydrothermal system, Mexico-Guatemala. Implications for estimation of geothermal potential of the deep aquifer.

    NASA Astrophysics Data System (ADS)

    Collard, N.; Taran, Y.; Jácome Paz, M. P.; Campion, R.

    2014-12-01

    Tacaná (4100 m asl) is the northernmost volcano of the Central America Volcanic Arc. The volcano hosts a volcano-hydrothermal system that is manifested as a low-temperature fumarolic field at 3600 m asl and several groups of thermal springs principally located at the northwestern slopes of the volcanic edifice, at altitudes 1500 - 2000 m asl. These thermal springs discharge SO4-HCO3-enriched water (up to 1 g/kg of each one) with temperatures in the 25-63°C range. There are two distinct groups of springs with a different chloride-temperature and chloride-sulfate correlations but with the same 87Sr/86Sr ratio (~0.7046±0.0002) indicating the same wall rock composition for different aquifers. On April 2014, we found a cold spring (Manantial Nuevo), located at an elevation ~500 m lower than the others and with a different chemical composition, that discharges Na-Cl-type water with Cl concentration of 1.4 g/l and Na+K concentration up to 1.5 g/l. This new spring forms a fourth group, representing a stratified geothermal aquifer. Each thermal spring feeds a thermal stream that flows into the main drainage of the area, Río Coatán. Solute and heat fluxes from thermal springs of Tacaná volcano are estimated by the chloride-inventory method. The total observed chloride discharge from the thermal springs is estimated as 14.8 g/s and the total measured heat output of ~9.5 MW. Considering a deep fluid temperature of 250°C, the corresponding advective heat transport from the deep reservoirs that feed these springs may be estimate as 26 MW. However, the total chloride output measured in the main drainage (Coatán river) is 4 times higher (~59 g/s) than the measured Cl output of all known thermal springs. This means that other, undiscovered, thermal discharges exist in the area and that the natural heat output through thermal springs at Tacaná is significantly higher and depends on the Cl content and temperatures of the unknown thermal water discharges. If chloride

  20. Geothermal Energy.

    ERIC Educational Resources Information Center

    Eaton, William W.

    Described are the origin and nature of geothermal energy. Included is the history of its development as an energy source, technological considerations affecting its development as an energy source, its environmental effects, economic considerations, and future prospects of development in this field. Basic system diagrams of the operation of a…

  1. Circum-Pacific geothermal energy use in 1990

    SciTech Connect

    D'Olier, W.L.

    1990-06-01

    Geothermal energy utilization in Pacific Ocean nations is conveniently measured by installed electrical generating capacity in gross megawatts (MW). Better perception of comparative achievements and outlook in 1990 is obtained by separately considering California's large Geysers installation of 2,044 MW. On this basis, the US, Mexico, El Salvador, and Nicaragua have approximately 1,630 MW of geothermal electric power established. In the western Pacific, the Philippines, New Zealand, Japan, and Indonesia have approximately 1,470 MW of power generation. Geothermal energy now provides about 3% of the electric power supply in California and Mexico and 8% in the Philippines. The 1990s will see continued growth of geothermal electric power especially in the Philippines and Mexico, which are pushing beyond existing capacities of 890 and 700 MW, respectively. Costa Rica has substantial initial geothermal power capacity under construction. In California a development surge closed the 1980 decade with 240 MW of new capacity at Coso Hot Springs and 242 MW of additional capacity in Imperial Valley. The US geothermal industry is now contending with a constrained power market and negative impacts of overdevelopment at The Geysers. However, several US geothermal companies now qualified in integrated resource development, electrical generation, and marketing are advantageously positioned for the next opening in the power market. Where sound production, injection, and reservoir management are practiced, geothermal reservoirs are supporting reliable, high performance electric power generation. New technologies are further reducing geothermal's low environmental profile, particularly minimizing emissions to atmosphere. Geothermal energy utilization should continue its steady growth in the Circum-Pacific during the 1990 decade.

  2. Geothermal Technologies Program: Utah

    SciTech Connect

    Not Available

    2005-06-01

    Geothermal Technologies Program Utah fact sheet describes the geothermal areas and use in Utah, focusing on power generation as well as direct use, including geothermally heated greenhouses, swimming pools, and therapeutic baths.

  3. Geothermal tomorrow 2008

    SciTech Connect

    None, None

    2009-01-18

    Contributors from the Geothermal Technologies Program and the geothermal community highlight the current status and activities of the Program and the development of the global resource of geothermal energy.

  4. Geothermal probabilistic cost study

    NASA Astrophysics Data System (ADS)

    Orren, L. H.; Ziman, G. M.; Jones, S. C.; Lee, T. K.; Noll, R.; Wilde, L.; Sadanand, V.

    1981-08-01

    A tool is presented to quantify the risks of geothermal projects, the Geothermal Probabilistic Cost Model (GPCM). The GPCM model was used to evaluate a geothermal reservoir for a binary-cycle electric plant at Heber, California. Three institutional aspects of the geothermal risk which can shift the risk among different agents was analyzed. The leasing of geothermal land, contracting between the producer and the user of the geothermal heat, and insurance against faulty performance were examined.

  5. Geothermal probabilistic cost study

    NASA Technical Reports Server (NTRS)

    Orren, L. H.; Ziman, G. M.; Jones, S. C.; Lee, T. K.; Noll, R.; Wilde, L.; Sadanand, V.

    1981-01-01

    A tool is presented to quantify the risks of geothermal projects, the Geothermal Probabilistic Cost Model (GPCM). The GPCM model was used to evaluate a geothermal reservoir for a binary-cycle electric plant at Heber, California. Three institutional aspects of the geothermal risk which can shift the risk among different agents was analyzed. The leasing of geothermal land, contracting between the producer and the user of the geothermal heat, and insurance against faulty performance were examined.

  6. Geothermal probabilistic cost study

    SciTech Connect

    Orren, L.H.; Ziman, G.M.; Jones, S.C.; Lee, T.K.; Noll, R.; Wilde, L.; Sadanand, V.

    1981-08-01

    A tool is presented to quantify the risks of geothermal projects, the Geothermal Probabilistic Cost Model (GPCM). The GPCM model is used to evaluate a geothermal reservoir for a binary-cycle electric plant at Heber, California. Three institutional aspects of the geothermal risk which can shift the risk among different agents are analyzed. The leasing of geothermal land, contracting between the producer and the user of the geothermal heat, and insurance against faulty performance are examined. (MHR)

  7. Condensation Processes in Geothermal Systems

    NASA Astrophysics Data System (ADS)

    Norman, D. I.; Moore, J. N.

    2005-12-01

    We model condensation processes in geothermal systems to understand how this process changes fluid chemistry. We assume two processes operate in geothermal systems: 1) condensation of a vapor phase derived by boiling an aqueous geothermal fluid into a cool near surface water and 2) condensation of a magmatic vapor by a deep circulating meteoric thermal fluid. It is assumed that the condensation process has two stages. Initially the condensing fluid is under saturated in gaseous species. Condensation of the vapor phase continues until the pressure on the fluid equals the sum of the partial pressures of water and the dissolved gaseous species. At that time bubbles flux through the condensing fluid. In time the fluid and fluxing gas phase come to equilibrium. Calculation shows that during the second stage of the condensation process the liquid phase becomes enriched in more soluble gaseous species like CO2 and H2S, and depleted in less soluble species like CH4 and N2. Stage 2 condensation processes can therefore be monitored by ratios of more and less condensable species like CO2/N2. Condensation of vapor released by boiling geothermal fluids results in liquids with high concentrations of H2S and CO2 like is seen in geothermal system steam-heated waters. Condensation of a magmatic vapor into circulating meteoric water has been proposed, but not well demonstrated. We compare to our models the Cerro Prieto, Mexico gas analysis data set collected over twelve years time by USGS personnel. It was assumed for modeling that the Cerro Prieto geothermal fluids are circulating meteoritic fluids with N2/Ar ratios about 40 to which is added a magmatic vapor with N2/Ar ratio = 400. The Cerro Prieto analyses show a strong correlation between N2/Ar and CO2/N2 as predicted by calculation. Two dimensional image plots of well N2/Ar + CO2/N2 show a bull's-eye pattern on the geothermal field. Image plots of analyses collected over a year or less time show N2/Ar and CO2/N2 hot spots

  8. 75 FR 43188 - Request for Public Comment Concerning the Redesign of Statewide Automated Child Welfare...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-23

    ... regulations to consider providing title IV- E agencies with increased flexibility to design information... Redesign of Statewide Automated Child Welfare Information System (SACWIS) Requirements AGENCY: Department... Statewide ] Automated Child Welfare Information System (SACWIS) Requirements. SUMMARY: Sections...

  9. 75 FR 21011 - National Protection and Programs Directorate; Statewide Communication Interoperability Plan...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-22

    ... SECURITY National Protection and Programs Directorate; Statewide Communication Interoperability Plan... concerning New Information Collection Request, Statewide Communication Interoperability Plan Implementation... January 5, 2010, at 75 FR 417, for a 60-day public comment period. DHS received no comments. The...

  10. The Socorro Geothermal System: A Low Temperature Geothermal Resource

    NASA Astrophysics Data System (ADS)

    Person, M. A.; Owens, L. B.

    2009-12-01

    The State of New Mexico is endowed with relatively high background heat flow and permeable, fractured crystalline and sedimentary rocks. This combination has given rise to numerous low temperature geothermal systems throughout the state. In many instances, hot springs associated with these systems are located within gaps in regional confining units (a.k.a. hydrologic windows) caused either by fault block rotation or the emplacement of volcanic dikes. The Socorro Geothermal Area (SGA) is a prime example of this type of a forced convection geothermal system. The Socorro geothermal area (SGA) lies 2 miles to the west of the NM Tech Campus near the base of the Socorro Mountain Block and will be assessed for production by drilling a 1500ft test well in September 2009. Published shallow temperature gradient measurements in fractured, permeable (3000 Darcy) granites indicate peak heat flow values as high as 490 mW/m^2 but decreases to 25 mW/m^2 about 10 km to the west within the La Jencia Basin near the foothills of the Magdalena Mountains. Silica and Cation based geothermometers suggest that deep geothermal reservoir reaches temperatures of 80 to 112 deg. C. Carbon14 age dating of shallow groundwater within the discharge area are about 20,000 years old. Hydrothermal models we constructed indicates that Mountain front recharge penetrates to depths of 4.5 km below the La Jencia Basin sedimentary pile into fractured, crystalline rocks. Discharge occurs through a hydrologic window to the east within a breached playa deposit at the western edge of the Socorro Basin. The hydrologic window was caused by fault block rotation. Warm springs which produce several hundred gpm of 32 deg. C water at the surface several miles to the south of the proposed drilling area also attest to the presence of a significant hydrothermal system. This low temperature resource could potentially heat the Campus of NM Tech.

  11. Evaluation of geothermal energy in Arizona. Quarterly topical progress report, January 1, 1980-March 31, 1981

    SciTech Connect

    White, D.H.; Goldstone, L.A.; Malysa, L.

    1981-03-31

    The tasks, objectives and completed work are discussed for the legislative and institutional program, cities program, geothermal applications utilization technology, and outreach. The work on the Maryvale Terrace development and the New Mexico Energy Institute are described. (MHR)

  12. 23 CFR 450.214 - Development and content of the long-range statewide transportation plan.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... shall develop a long-range statewide transportation plan, with a minimum 20-year forecast period at the..., the long-range statewide transportation plan shall be developed in cooperation with the affected MPOs. (g) For non-metropolitan areas, the long-range statewide transportation plan shall be developed...

  13. 78 FR 64232 - Notice of Adjustment of Statewide Per Capita Impact Indicator

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-28

    ... SECURITY Federal Emergency Management Agency Notice of Adjustment of Statewide Per Capita Impact Indicator... statewide per capita impact indicator under the Public Assistance program for disasters declared on or after... INFORMATION: 44 CFR 206.48 provides that FEMA will adjust the statewide per capita impact indicator under...

  14. 77 FR 61423 - Notice of Adjustment of Statewide Per Capita Impact Indicator

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-09

    ... SECURITY Federal Emergency Management Agency Notice of Adjustment of Statewide Per Capita Impact Indicator... statewide per capita impact indicator under the Public Assistance program for disasters declared on or after.... SUPPLEMENTARY INFORMATION: 44 CFR 206.48 provides that FEMA will adjust the statewide per capita...

  15. 76 FR 63936 - Notice of Adjustment of Statewide Per Capita Impact Indicator

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-14

    ... SECURITY Federal Emergency Management Agency Notice of Adjustment of Statewide Per Capita Impact Indicator... statewide per capita impact indicator under the Public Assistance program for disasters declared on or after.... SUPPLEMENTARY INFORMATION: 44 CFR 206.48 provides that FEMA will adjust the statewide per capita...

  16. 75 FR 62135 - Notice of Adjustment of Statewide Per Capita Impact Indicator

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-07

    ... SECURITY Federal Emergency Management Agency Notice of Adjustment of Statewide Per Capita Impact Indicator... statewide per capita impact indicator under the Public Assistance program for disasters declared on or after.... SUPPLEMENTARY INFORMATION: 44 CFR 206.48 provides that FEMA will adjust the statewide per capita...

  17. Washington Play Fairway Analysis Geothermal GIS Data

    DOE Data Explorer

    Corina Forson

    2015-12-15

    This file contains file geodatabases of the Mount St. Helens seismic zone (MSHSZ), Wind River valley (WRV) and Mount Baker (MB) geothermal play-fairway sites in the Washington Cascades. The geodatabases include input data (feature classes) and output rasters (generated from modeling and interpolation) from the geothermal play-fairway in Washington State, USA. These data were gathered and modeled to provide an estimate of the heat and permeability potential within the play-fairways based on: mapped volcanic vents, hot springs and fumaroles, geothermometry, intrusive rocks, temperature-gradient wells, slip tendency, dilation tendency, displacement, displacement gradient, max coulomb shear stress, sigma 3, maximum shear strain rate, and dilational strain rate at 200m and 3 km depth. In addition this file contains layer files for each of the output rasters. For details on the areas of interest please see the 'WA_State_Play_Fairway_Phase_1_Technical_Report' in the download package. This submission also includes a file with the geothermal favorability of the Washington Cascade Range based off of an earlier statewide assessment. Additionally, within this file there are the maximum shear and dilational strain rate rasters for all of Washington State.

  18. Statewide water-quality network for Massachusetts

    USGS Publications Warehouse

    DeSimone, Leslie A.; Steeves, Peter A.; Zimmerman, Marc James

    2001-01-01

    A water-quality monitoring program is proposed that would provide data to meet multiple information needs of Massachusetts agencies and other users concerned with the condition of the State's water resources. The program was designed by the U.S. Geological Survey and the Massachusetts Department of Environmental Protection, Division of Watershed Management, with input from many organizations involved in water-quality monitoring in the State, and focuses on inland surface waters (streams and lakes). The proposed monitoring program consists of several components, or tiers, which are defined in terms of specific monitoring objectives, and is intended to complement the Massachusetts Watershed Initiative (MWI) basin assessments. Several components were developed using the Neponset River Basin in eastern Massachusetts as a pilot area, or otherwise make use of data from and sampling approaches used in that basin as part of a MWI pilot assessment in 1994. To guide development of the monitoring program, reviews were conducted of general principles of network design, including monitoring objectives and approaches, and of ongoing monitoring activities of Massachusetts State agencies.Network tiers described in this report are primarily (1) a statewide, basin-based assessment of existing surface-water-quality conditions, and (2) a fixed-station network for determining contaminant loads carried by major rivers. Other components, including (3) targeted programs for hot-spot monitoring and other objectives, and (4) compliance monitoring, also are discussed. Monitoring programs for the development of Total Maximum Daily Loads for specific water bodies, which would constitute another tier of the network, are being developed separately and are not described in this report. The basin-based assessment of existing conditions is designed to provide information on the status of surface waters with respect to State water-quality standards and designated uses in accordance with the

  19. Geothermal in transition

    SciTech Connect

    Anderson, J.L.

    1991-10-01

    This article examines the current market for geothermal projects in the US and overseas. The topics of the article include future capacity needs, upgrading the Coso Geothermal project, the productivity of the Geysers area of Northern California, the future of geothermal, and new projects at Soda Lake, Carson Basin, Unalaska Island, and the Puna Geothermal Venture in Hilo, Hawaii.

  20. Alaska geothermal bibliography

    SciTech Connect

    Liss, S.A.; Motyka, R.J.; Nye, C.J.

    1987-05-01

    The Alaska geothermal bibliography lists all publications, through 1986, that discuss any facet of geothermal energy in Alaska. In addition, selected publications about geology, geophysics, hydrology, volcanology, etc., which discuss areas where geothermal resources are located are included, though the geothermal resource itself may not be mentioned. The bibliography contains 748 entries.

  1. Nine Essential Elements of Statewide Data-Collection Systems.

    ERIC Educational Resources Information Center

    Dougherty, Chrys

    State education agencies are increasingly building the capacity to collect and manage sizable quantities of information about schools and districts and to match individual student records over time and across databases. An adequate statewide student data-collection system makes it easier for a state to meet legal reporting requirements such as…

  2. Creating a Minnesota Statewide SNAP-Ed Program Evaluation

    ERIC Educational Resources Information Center

    Gold, Abby; Barno, Trina Adler; Sherman, Shelley; Lovett, Kathleen; Hurtado, G. Ali

    2013-01-01

    Systematic evaluation is an essential tool for understanding program effectiveness. This article describes the pilot test of a statewide evaluation tool for the Supplemental Nutrition Assistance Program-Education (SNAP-Ed). A computer algorithm helped Community Nutrition Educators (CNEs) build surveys specific to their varied educational settings…

  3. The Alaska Statewide Assessment: Implementation and Outcome, 1989.

    ERIC Educational Resources Information Center

    Stofflet, Frederick P.; And Others

    In October 1989 Alaska conducted its statewide student assessment. Over 23,000 students in grades 4, 6, and 8 completed the reading, mathematics, and language arts sections of the Iowa Tests of Basic Skills (ITBS). At the same time, a series of questionnaires asked building principals about their schools' philosophy, climate, and problems; asked…

  4. Development of Articulation Models for Allied Health Statewide Planning.

    ERIC Educational Resources Information Center

    Lang, Joanne; And Others

    Under the auspices of the Kentucky Council on Higher Education and with the aim of delineating issues in allied health education and making recommendations for alleviating the issues, an in-depth, two-year study was completed in 1975. The primary recommendations pertained to the development of a statewide plan for allied health education that…

  5. Maryland Statewide Plan for Postsecondary Education. First Annual Review.

    ERIC Educational Resources Information Center

    Maryland State Board for Higher Education, Annapolis.

    The review of the Maryland statewide plan for postsecondary education was designed to identify and analyze issues confronting postsecondary education that were not contained in the initial plan and to evaluate progress made in carrying out recommendations in the initial plan. After an introduction, Chapter Two focuses on four new planning…

  6. Building a User-Oriented Statewide Score Reporting System.

    ERIC Educational Resources Information Center

    Bunch, Michael B.

    In 1983 the Maryland State Department of Public Education (MSDE) issued a request for proposals for "The Development of the Score Reporting System for the Maryland Functional Testing Program." The MSDE called for a literature review, a national survey, a statewide survey of user needs and capabilities, an assessment of the state's report producing…

  7. Statewide Supplemental Reference Service: New Jersey's Model for Backup Reference.

    ERIC Educational Resources Information Center

    Bromberg, Peter

    2001-01-01

    Discusses the history of backup reference service in the state of New Jersey including the transition from regional backup service; describes the current statewide service; and considers future service possibilities in light of recent trends, including a decrease in the number of reference questions being received in libraries. (LRW)

  8. California Statewide Plug-In Electric Vehicle Infrastructure Assessment

    SciTech Connect

    Melaina, Marc; Helwig, Michael

    2014-05-01

    The California Statewide Plug-In Electric Vehicle Infrastructure Assessment conveys to interested parties the Energy Commission’s conclusions, recommendations, and intentions with respect to plug-in electric vehicle (PEV) infrastructure development. There are several relatively low-risk and high-priority electric vehicle supply equipment (EVSE) deployment options that will encourage PEV sales and

  9. Education in South Dakota: District & Statewide Profiles, 2000-2001.

    ERIC Educational Resources Information Center

    South Dakota State Dept. of Education and Cultural Affairs, Pierre.

    This volume presents in a single volume information about South Dakota education previously presented in the Statistical Digest and the Academic Progress Report. The information is presented in the form of district profiles and statewide summaries, giving users a complete snapshot of each public school district in South Dakota. The easy-to-use…

  10. 34 CFR 361.26 - Waiver of statewideness.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Waiver of statewideness. 361.26 Section 361.26 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF SPECIAL EDUCATION AND REHABILITATIVE SERVICES, DEPARTMENT OF EDUCATION STATE VOCATIONAL REHABILITATION SERVICES...

  11. The Statewide Public Agenda and Higher Education: Making It Work

    ERIC Educational Resources Information Center

    McGuinness, Aims C.; Novak, Richard

    2011-01-01

    Recent political and economic trends pose a challenge to developing effective leadership capacity to guide public universities to the achievement of statewide goals. However, the increasingly complex political and economic contexts across the nation are making it difficult to develop such leadership capacity. The authors argue that it is important…

  12. School Counseling and Student Outcomes: Summary of Six Statewide Studies

    ERIC Educational Resources Information Center

    Carey, John; Dimmitt, Carey

    2012-01-01

    The six statewide research studies presented in this special issue use a variety of designs, instrumentation, and measures. Nevertheless, they can be integrated at the level of results to shed light on some important questions related to effective practice in the field of school counseling. In fact, one can argue that, when separate studies that…

  13. 49 CFR 613.200 - Statewide transportation planning and programming.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... regulations in 23 CFR 450, subpart B, shall be followed in complying with the requirements of this subpart. The definitions in 23 CFR 450, subpart A, shall apply. ... 49 Transportation 7 2011-10-01 2011-10-01 false Statewide transportation planning and...

  14. 49 CFR 613.200 - Statewide transportation planning and programming.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... regulations in 23 CFR 450, subpart B, shall be followed in complying with the requirements of this subpart. The definitions in 23 CFR 450, subpart A, shall apply. ... 49 Transportation 7 2012-10-01 2012-10-01 false Statewide transportation planning and...

  15. 49 CFR 613.200 - Statewide transportation planning and programming.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... regulations in 23 CFR 450, subpart B, shall be followed in complying with the requirements of this subpart. The definitions in 23 CFR 450, subpart A, shall apply. ... 49 Transportation 7 2014-10-01 2014-10-01 false Statewide transportation planning and...

  16. 49 CFR 613.200 - Statewide transportation planning and programming.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... regulations in 23 CFR 450, subpart B, shall be followed in complying with the requirements of this subpart. The definitions in 23 CFR 450, subpart A, shall apply. ... 49 Transportation 7 2010-10-01 2010-10-01 false Statewide transportation planning and...

  17. 49 CFR 613.200 - Statewide transportation planning and programming.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... regulations in 23 CFR 450, subpart B, shall be followed in complying with the requirements of this subpart. The definitions in 23 CFR 450, subpart A, shall apply. ... 49 Transportation 7 2013-10-01 2013-10-01 false Statewide transportation planning and...

  18. Restructuring the University of Alaska Statewide System of Higher Education.

    ERIC Educational Resources Information Center

    Gaylord, Thomas A.; Rogers, Brian

    The radical restructuring of Alaska's public higher education system brought on by the state's 1986 economic collapse is discussed. The plan called for a merger of 11 community colleges with three universities into three multi-campus institutions. It realigned statewide programs in vocational technical education, fisheries and ocean sciences,…

  19. A Statewide Study of Gang Membership in California Secondary Schools

    ERIC Educational Resources Information Center

    Estrada, Joey Nuñez, Jr.; Gilreath, Tamika D.; Astor, Ron Avi; Benbenishty, Rami

    2016-01-01

    To date, there is a paucity of empirical evidence that examines gang membership in schools. Using statewide data of 7th-, 9th-, and 11th-grade students from California, this study focuses on the prevalence of gang membership by county, region, ethnicity, and grade level. Bivariate and multivariate logistic regression analyses were employed with…

  20. Self-Interest and Volunteerism: Analysis of a Statewide Association.

    ERIC Educational Resources Information Center

    Passewitz, Gregory R.; Donnermeyer, Joseph F.

    1989-01-01

    A survey of all known Ohio maple syrup producers indicated that economic self-interest is an important factor explaining the levels of participation in the statewide association. Although maple syrup is an important source of income for many Amish, none was involved in the association. (JOW)

  1. Suspension, Race, and Disability: Analysis of Statewide Practices and Reporting

    ERIC Educational Resources Information Center

    Krezmien, Michael P.; Leone, Peter E.; Achilles, Georgianna M.

    2006-01-01

    This analysis of statewide suspension data from 1995 to 2003 in Maryland investigated disproportionate suspensions of minority students and students with disabilities. We found substantial increases in over-all rates of suspensions from 1995 to 2003, as well as disproportionate rates of suspensions for African American students, American Indian…

  2. The Family Therapy Institute: A State-Wide Deinstitutionalization Program.

    ERIC Educational Resources Information Center

    Family Therapy Inst., Rugby, ND.

    The report--over half of which consists of appendixes--describes the Family Therapy Institute, a statewide program in Rugby, North Dakota devoted to the deinstitutionalization of juvenile delinquent status offenders by means of short term intensive family therapy treatment. Among the aspects covered are a history of the philosophical approach…

  3. New Mexico GPW Fact Sheet

    SciTech Connect

    2002-04-01

    N e w M e x i c o New Mexico holds considerable reserves of this clean, reliable form of energy that to date have barely been tapped. New Mexico has more acres of geothermally heated greenhouses than any other state, and aquaculture, or fish farming, is a burgeoning enterprise for state residents. Several electric power generation opportunities also have been identified. G e o t h e r m a l ? W h y Homegrown Energy It's here, right beneath our feet! No need to import! Current Development New Mex

  4. Thermodynamic behaviour of simplified geothermal reservoirs

    SciTech Connect

    Hiriart, G.; Sanchez, E.

    1985-01-22

    Starting from the basic laws of conservation of mass and energy, the differential equations that represent the thermodynamic behavior of a simplified geothermal reservoir are derived. Its application is limited to a reservoir of high permeability as it usually occurs in the central zone of a geothermal field. A very practical method to solve numerically the equations is presented, based on the direct use of the steam tables. The method, based in one general equation, is extended and illustrated with a numerical example to the case of segregated mass extraction, variable influx and heat exchange between rock and fluid. As it is explained, the method can be easily coupled to several influx models already developed somewhere else. The proposed model can become an important tool to solve practical problems, where like in Los Azufres Mexico, the geothermal field can be divided in an inner part where flashing occurs and an exterior field where storage of water plays the main role.

  5. Tables of co-located geothermal-resource sites and BLM Wilderness Study Areas

    SciTech Connect

    Foley, D.; Dorscher, M.

    1982-11-01

    Matched pairs of known geothermal wells and springs with BLM proposed Wilderness Study Areas (WSAs) were identified by inspection of WSA and Geothermal resource maps for the states of Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington and Wyoming. A total of 3952 matches, for geothermal sites within 25 miles of a WSA, were identified. Of these, only 71 (1.8%) of the geothermal sites are within one mile of a WSA, and only an additional 100 (2.5%) are within one to three miles. Approximately three-fourths of the matches are at distances greater than ten miles. Only 12 of the geothermal sites within one mile of a WSA have surface temperatures reported above 50/sup 0/C. It thus appears that the geothermal potential of WSAs overall is minimal, but that evaluation of geothermal resources should be considered in more detail for some areas prior to their designation as Wilderness.

  6. Children and Firearms: A Gunshot Injury Prevention Program in New Mexico.

    ERIC Educational Resources Information Center

    Becker, Thomas M.; And Others

    1993-01-01

    Describes a statewide childhood gun safety program in New Mexico aimed at reducing the availability of loaded guns at home. Focusing on increasing safety awareness of communities, health care professionals, parents, and gun owners, the program will be continued with a new three-year funding grant. (SLD)

  7. [Developing a Career Center.] A Career Center Handbook for New Mexico's High School Counselors.

    ERIC Educational Resources Information Center

    Guthrie, Barbara; And Others

    Based on a pilot project that promoted statewide career guidance awareness through the establishment of a high school career center, this guide shows New Mexico high school counselors how to develop career centers in their schools. The booklet takes counselors through the process of establishing a career center, providing suggestions for the…

  8. Guidebook to Geothermal Finance

    SciTech Connect

    Salmon, J. P.; Meurice, J.; Wobus, N.; Stern, F.; Duaime, M.

    2011-03-01

    This guidebook is intended to facilitate further investment in conventional geothermal projects in the United States. It includes a brief primer on geothermal technology and the most relevant policies related to geothermal project development. The trends in geothermal project finance are the focus of this tool, relying heavily on interviews with leaders in the field of geothermal project finance. Using the information provided, developers and investors may innovate in new ways, developing partnerships that match investors' risk tolerance with the capital requirements of geothermal projects in this dynamic and evolving marketplace.

  9. Statewide Measures Inventory. An Inventory of Information Relevant to Statewide Postsecondary Education Planning and Management. Technical Report 48A. Field Review Edition.

    ERIC Educational Resources Information Center

    McLaughlin, James N.; And Others

    The Statewide Measures Inventory is essentially a list of items of information along with concise definitions and other information of interest, relevant to statewide postsecondary education planning and management. It has been designed primarily as a working document for use by state level postsecondary education planners and decisionmakers. The…

  10. Microbial and Chemical Characterization of Geothermal Ground Water

    NASA Astrophysics Data System (ADS)

    Schulze-Makuch, Dirk; Kennedy, John

    Subsurface geothermal sites are commonly colonized by chemolithotrophic bacteria which use rock minerals and CO_2 as sole nutrients. This type of ``life cradle'' may not only be common on Earth but may also be a likely scenario on many other planets. Three geothermal sites in southern New Mexico have been chosen to characterize geothermal waters for microbial diversity and chemical content. All sites of this on-going study are located on or near the Rio Grande Rift and are tapped into fractured reservoir systems of Paleozoic carbonate rocks, Tertiary volcanic rocks or consolidated basin-fill sediments. Geothermal fluids were analyzed for major cations and anions, selected trace elements, TOC, phosphate, fluoride and dissolved gases. The microbial analysis included phospholipid fatty acid (PLFA) analysis and DNA sequencing. Geothermal ground water was high in dissolved solids, had high concentrations of carbon dioxide and was more acidic than adjacent ground water not affected by geothermal activity. Geothermal ground-water samples contained very low amounts of biomass composed of relatively simple microbial communities. Several species of Archaebacteria were detected in some of the ground water that was derived from wells tapping into deep fractured systems. The analysis of denaturing gradient gel electrophoresis (DGGE) images indicated distinct differences of the types of microbes present in geothermal water compared to an adjacent deep non-thermal flow system.

  11. Texas statewide hepatitis C counseling and testing, 2000-2005.

    PubMed

    Heseltine, Gary; McFarlane, Jenny

    2007-01-01

    In 1999, the Texas legislature funded a statewide hepatitis C education and prevention program. Hepatitis training was incorporated into training for all human immunodeficiency virus (HIV), sexually transmitted disease (STD), and substance abuse counselors. Hepatitis C virus (HCV) counseling and HCV-antibody (anti-HCV) testing services were integrated into 20 HIV/STD service provider programs. Hepatitis C counseling and testing became available in 2000. Through 2005, 38,717 tests were administered, with 8,964 (23.2%) anti-HCV positive. Injection drug use was reported by 7,105 people (79.3%) who tested positive. In Texas, a state-initiated and almost entirely state-funded program supported statewide HCV counseling and anti-HCV testing among high-risk adults. PMID:17542446

  12. Seventeenth workshop on geothermal reservoir engineering: Proceedings

    SciTech Connect

    Ramey, H.J. Jr.; Kruger, P.; Miller, F.G.; Horne, R.N.; Brigham, W.E.; Cook, J.W.

    1992-01-31

    PREFACE The Seventeenth Workshop on Geothermal Reservoir Engineering was held at Stanford University on January 29-31, 1992. There were one hundred sixteen registered participants which equaled the attendance last year. Participants were from seven foreign countries: Italy, Japan, United Kingdom, France, Belgium, Mexico and New Zealand. Performance of many geothermal fields outside the United States was described in the papers. The Workshop Banquet Speaker was Dr. Raffaele Cataldi. Dr. Cataldi gave a talk on the highlights of his geothermal career. The Stanford Geothermal Program Reservoir Engineering Award for Excellence in Development of Geothermal Energy was awarded to Dr. Cataldi. Dr. Frank Miller presented the award at the banquet. Thirty-eight papers were presented at the Workshop with two papers submitted for publication only. Dr. Roland Horne opened the meeting and the key note speaker was J.E. ''Ted'' Mock who discussed the DOE Geothermal R. & D. Program. The talk focused on aiding long-term, cost effective private resource development. Technical papers were organized in twelve sessions concerning: geochemistry, hot dry rock, injection, geysers, modeling, and reservoir mechanics. Session chairmen were major contributors to the program and we thank: Sabodh Garg., Jim Lovekin, Jim Combs, Ben Barker, Marcel Lippmann, Glenn Horton, Steve Enedy, and John Counsil. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and graduate students. We wish to thank Pat Ota, Ted Sumida, and Terri A. Ramey who also produces the Proceedings Volumes for publication. We owe a great deal of thanks to our students who operate audiovisual equipment and to Francois Groff who coordinated the meeting arrangements for the Workshop. Henry J. Ramey, Jr. Roland N. Horne Frank G. Miller Paul Kruger William E. Brigham Jean W. Cook -vii

  13. California Statewide PEV Infrastructure Assessment; NREL (National Renewable Energy Laboratory)

    SciTech Connect

    Melaina, Marc; Eichman, Joshua

    2015-06-10

    This presentation discusses how the California Statewide Plug-In Electric Vehicle (PEV) Infrastructure Assessment provides a framework for understanding the potential energy (kWh) and demand (MW) impacts of PEV market growth; how PEV travel simulations can inform the role of public infrastructure in future market growth; and how ongoing assessment updates and Alternative Fuels Data Center outreach can help coordinate stakeholder planning and decision making and reduce uncertainties.

  14. Comparison of theoretical and observed pressure profiles in geothermal wells

    SciTech Connect

    Marquez M, R.

    1981-01-01

    Two-phase water-steam flow conditions in geothermal wells are studied aimed at predicting pressure drops in these wells. Five prediction methods were selected to be analyzed and compared with each other and with actual pressure measurements. These five correlations were tested on five wells: three in New Zealand, one in Mexico, and one in the Philippines.

  15. Geothermal power generation

    SciTech Connect

    Crane, G.K.

    1981-01-01

    The Southern California Edison Co. geothermal program is described in general. The individual power plant projects are described: Brawley 10 MW, Heber 45 MW and Salton Sea 9 MW. Related geothermal activities are mentioned.

  16. GEOTHERM Data Set

    DOE Data Explorer

    DeAngelo, Jacob

    1983-01-01

    GEOTHERM is a comprehensive system of public databases and software used to store, locate, and evaluate information on the geology, geochemistry, and hydrology of geothermal systems. Three main databases address the general characteristics of geothermal wells and fields, and the chemical properties of geothermal fluids; the last database is currently the most active. System tasks are divided into four areas: (1) data acquisition and entry, involving data entry via word processors and magnetic tape; (2) quality assurance, including the criteria and standards handbook and front-end data-screening programs; (3) operation, involving database backups and information extraction; and (4) user assistance, preparation of such items as application programs, and a quarterly newsletter. The principal task of GEOTHERM is to provide information and research support for the conduct of national geothermal-resource assessments. The principal users of GEOTHERM are those involved with the Geothermal Research Program of the U.S. Geological Survey.

  17. Geothermal direct heat program: roundup technical conference proceedings. Volume II. Bibliography of publications. State-coupled geothermal resource assessment program

    SciTech Connect

    Ruscetta, C.A.

    1982-07-01

    Lists of publications are presented for the Geothermal Resource Assessment Program for the Utah Earth Science Laboratory and the following states: Alaska, Arizona, California, Colorado, Hawaii, Idaho, Kansas, Montana, Nebraska, Nevada, New Mexico, New York, North Dakota, Oregon, Texas, Utah, and Washington.

  18. South Dakota geothermal handbook

    SciTech Connect

    Not Available

    1980-06-01

    The sources of geothermal fluids in South Dakota are described and some of the problems that exist in utilization and materials selection are described. Methods of heat extraction and the environmental concerns that accompany geothermal fluid development are briefly described. Governmental rules, regulations and legislation are explained. The time and steps necessary to bring about the development of the geothermal resource are explained in detail. Some of the federal incentives that encourage the use of geothermal energy are summarized. (MHR)

  19. Geothermal exploration in Indonesia

    SciTech Connect

    Radja, V.T.

    1984-03-01

    Indonesia is blessed with geothermal resources. This fortunate aspect is directly related to the fact that the archipelago is an island arc created by a subduction zone. Evidence of geothermal activity is common throughout the Islands. Among the islands' many active volcanos are numerous geothermal phenomena. Almost half of the volcanic centers in Indonesia (88 out of 177 centers) contain fumarole and sulfatare features. A brief history of the exploration for geothermal energy in Indonesia is presented.

  20. Geothermal district G1

    SciTech Connect

    Not Available

    1988-12-01

    Geothermal District G1 includes 37 northeastern California counties and six geothermal fields: Lake City, Susanville, Litchfield, Wendel, Amedee, and Casa Diablo. Electrical generation from geothermal resources occurs in three of the fields: Wendel, Amedee, and Casa Diablo. Low-temperature geothermal projects are underway throughout the district and are described in a road log format. The ten projects described are located at Big Bend, Glass Mountain, Bieber, Alturas, Cedarville, Lake City, Honey Lake Valley, Greenville, and in Sierra and Mono Counties.

  1. Geothermal energy in Nevada

    SciTech Connect

    Not Available

    1980-01-01

    The nature of goethermal resources in Nevada and resource applications are discussed. The social and economic advantages of utilizing geothermal energy are outlined. Federal and State programs established to foster the development of geothermal energy are discussed. The names, addresses, and phone numbers of various organizations actively involved in research, regulation, and the development of geothermal energy are included. (MHR)

  2. 23 CFR 450.214 - Development and content of the long-range statewide transportation plan.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... long-range statewide transportation plan should include capital, operations and management strategies...., transportation, safety, economic development, social and environmental effects, or energy) that were relevant...

  3. Geothermal monitor report

    NASA Astrophysics Data System (ADS)

    1982-06-01

    Geothermal Progress Monitor Report No. 6 presents a state-by-state summary of the status of geothermal leasing, exploration, and development in major physiographic regions where geothermal resource potential has been identified. Recent state-specific activities are reported at the end of each state status report, while recent activities of a more general nature are summarized briefly in Part 2 of the report. A list of recent publications of potential interest to the geothermal community and a directory of contributors to the geothermal progress monitoring system are also included.

  4. Hawaii geothermal project

    NASA Technical Reports Server (NTRS)

    Kamins, R. M.

    1974-01-01

    Hawaii's Geothermal Project is investigating the occurrence of geothermal resources in the archipelago, initially on the Island of Hawaii. The state's interest in geothermal development is keen, since it is almost totally dependent on imported oil for energy. Geothermal development in Hawaii may require greater participation by the public sector than has been true in California. The initial exploration has been financed by the national, state, and county governments. Maximization of net benefits may call for multiple use of geothermal resources; the extraction of by-products and the application of treated effluents to agricultural and aquacultural uses.

  5. Subsidence due to geothermal fluid withdrawal

    SciTech Connect

    Narasimhan, T.N.; Goyal, K.P.

    1982-10-01

    Single-phase and two-phase geothermal reservoirs are currently being exploited for power production in Italy, Mexico, New Zealand, the U.S. and elsewhere. Vertical ground displacements of upto 4.5 m and horizontal ground displacements of up t o 0.5 m have been observed at Wairakei, New Zealand that are clearly attributable to the resource exploitation. Similarly, vertical displacements of about 0.13 m have been recorded at The Geysers, California. No significant ground displacements that are attributable to large-scale fluid production have been observed at Larderello, Italy and Cerro Prieto, Mexico. Observations show that subsidence due to geothermal fluid production is characterized by such features as an offset of the subsidence bowl from the main area of production, time-lag between production and subsidence and nonlinear stress-strain relationships. Several plausible conceptual models, of varying degrees of sophistication, have been proposed to explain the observed features. At present, relatively more is known about the physical mechanisms that govern subsidence than the relevant therma mechanisms. Although attempts have been made to simulate observed geothermal subsidence, the modeling efforts have been seriously limited by a lack of relevant field data needed to sufficiently characterize the complex field system.

  6. Subsidence due to geothermal fluid withdrawal

    SciTech Connect

    Narasimhan, T. N.; Goyal, K. P.

    1984-12-01

    Single-phase and two-phase geothermal reservoirs are currently being exploited for power production in Italy, Mexico, New Zealand, the United States, and elsewhere. Vertical ground displacements of up to 4.5 m and horizontal ground displacements of up to 0.5 m have been observed at Wairakei, New Zealand, that are clearly attributable to the resource exploitation. Similarly, vertical displacements of about 0.13 m have been recorded at The Geysers, California. No significant ground displacements that are attributable to large-scale fluid production have been observed at Larderello, Italy, and Cerro Prieto, Mexico. In this paper, observations show that subsidence due to geothermal fluid production is characterized by such features as an offset of the subsidence bowl from the main area of production, time-lag between production and subsidence, and nonlinear stress-strain relationships. Several plausible conceptual models, of varying degrees of sophistication, have been proposed to explain the observed features. At present, relatively more is known about the physical mechanisms that govern subsidence than the relevant thermal mechanisms. Finally, although attempts have been made to simulate observed geothermal subsidence, the modeling efforts have been seriously limited by a lack of relevant field data needed to sufficiently characterize the complex field system.

  7. Twelfth workshop on geothermal reservoir engineering: Proceedings

    SciTech Connect

    Ramey, H.J. Jr.; Kruger, P.; Miller, F.G.; Horne, R.N.; Brigham, W.E.; Rivera, J.

    1987-01-22

    Preface The Twelfth Workshop on Geothermal Reservoir Engineering was held at Stanford University on January 20-22, 1987. The year ending December 1986 was very difficult for the domestic geothermal industry. Low oil prices caused a sharp drop in geothermal steam prices. We expected to see some effect upon attendance at the Twelfth Workshop. To our surprise, the attendance was up by thirteen from previous years, with one hundred and fifty-seven registered participants. Eight foreign countries were represented: England, France, Iceland, Italy, Japan, Mexico, New Zealand, and Turkey. Despite a worldwide surplus of oil, international geothermal interest and development is growing at a remarkable pace. There were forty-one technical presentations at the Workshop. All of these are published as papers in this Proceedings volume. Seven technical papers not presented at the Workshop are also published; they concern geothermal developments and research in Iceland, Italy, and New Zealand. In addition to these forty-eight technical presentations or papers, the introductory address was given by Henry J. Ramey, Jr. from the Stanford Geothermal Program. The Workshop Banquet speaker was John R. Berg from the Department of Energy. We thank him for sharing with the Workshop participants his thoughts on the expectations of this agency in the role of alternative energy resources, specifically geothermal, within the country???s energy framework. His talk is represented as a paper in the back of this volume. The chairmen of the technical sessions made an important contribution to the workshop. Other than Stanford faculty members they included: M. Gulati, K. Goyal, G.S. Bodvarsson, A.S. Batchelor, H. Dykstra, M.J. Reed, A. Truesdell, J.S. Gudmundsson, and J.R. Counsil. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and students. We would like to thank Jean Cook, Marilyn King, Amy Osugi, Terri Ramey, and Rosalee Benelli for their valued help with the meeting

  8. Sixteenth workshop on geothermal reservoir engineering: Proceedings

    SciTech Connect

    Ramey, H.J. Jr.; Kruger, P.; Miller, F.G.; Horne, R.N.; Brigham, W.E.; Cook, J.W.

    1991-01-25

    The Sixteenth Workshop on Geothermal Reservoir Engineering was held at Stanford University on January 23-25, 1991. The Workshop Banquet Speaker was Dr. Mohinder Gulati of UNOCAL Geothermal. Dr. Gulati gave an inspiring talk on the impact of numerical simulation on development of geothermal energy both in The Geysers and the Philippines. Dr. Gulati was the first recipient of The Stanford Geothermal Program Reservoir Engineering Award for Excellence in Development of Geothermal Energy. Dr. Frank Miller presented the award. The registered attendance figure of one hundred fifteen participants was up slightly from last year. There were seven foreign countries represented: Iceland, Italy, Philippines, Kenya, the United Kingdom, Mexico, and Japan. As last year, papers on about a dozen geothermal fields outside the United States were presented. There were thirty-six papers presented at the Workshop, and two papers were submitted for publication only. Attendees were welcomed by Dr. Khalid Aziz, Chairman of the Petroleum Engineering Department at Stanford. Opening remarks were presented by Dr. Roland Horne, followed by a discussion of the California Energy Commission's Geothermal Activities by Barbara Crowley, Vice Chairman; and J.E. ''Ted'' Mock's presentation of the DOE Geothermal Program: New Emphasis on Industrial Participation. Technical papers were organized in twelve sessions concerning: hot dry rock, geochemistry, tracer injection, field performance, modeling, and chemistry/gas. As in previous workshops, session chairpersons made major contributions to the program. Special thanks are due to Joel Renner, Jeff Tester, Jim Combs, Kathy Enedy, Elwood Baldwin, Sabodh Garg, Marcel0 Lippman, John Counsil, and Eduardo Iglesias. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and graduate students. We wish to thank Pat Ota, Angharad Jones, Rosalee Benelli, Jeanne Mankinen, Ted Sumida, and Terri A. Ramey who also produces the Proceedings Volumes

  9. A statewide study of the public attitudes toward child abuse.

    PubMed

    Dhooper, S S; Royse, D D; Wolfe, L C

    1991-01-01

    A statewide survey of adults revealed that they are well informed about some aspects of child abuse. They had a generally good intuitive understanding of the characteristics of abused children and child abusers, but a majority seemed to have a "deviance" perspective on child abuse. They considered abusers as abnormal and intractable. While three-quarters of the respondents were aware that they are obligated to report cases of child abuse to the authorities, one-fifth knew someone who had abused a child, but only a third of these actually reported the case.

  10. Reference book on geothermal direct use

    SciTech Connect

    Lienau, P.J.; Lund, J.W.; Rafferty, K.; Culver, G.

    1994-08-01

    This report presents the direct uses of geothermal energy in the United States. Topics discussed include: low-temperature geothermal energy resources; energy reserves; geothermal heat pumps; geothermal energy for residential buildings; and geothermal energy for industrial usage.

  11. Readiness and Success: Statewide Implementation of EXPLORE and PLAN. Issues in College Readiness

    ERIC Educational Resources Information Center

    ACT, Inc., 2009

    2009-01-01

    States are increasingly implementing college readiness assessments as part of statewide efforts to increase student awareness of, preparation for, and access to higher education. This brief outlines the long-term impact and benefits of statewide implementation of EXPLORE[R] and PLAN[R], two elements of the longitudinal-assessment program within…

  12. Are Statewide Data Systems Meeting the Local Institution's Needs? AIR Forum Paper 1978.

    ERIC Educational Resources Information Center

    Bryson, Charles H.

    Statewide data collection systems emerged in the late sixties as the vehicle to achieving greater efficiency and accountability in higher education. The expectations of statewide systems were that they would meet the needs of various levels of management. The example presented in this paper is the Georgia management information system and its…

  13. 45 CFR 1355.52 - Funding authority for statewide automated child welfare information systems (SACWIS).

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... to the planning, design, development and installation of a statewide automated child welfare... 45 Public Welfare 4 2011-10-01 2011-10-01 false Funding authority for statewide automated child... Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN...

  14. South Dakota Statewide Core Curriculum, Career Ladder and Challenge System: Volumes I and II. Final Report.

    ERIC Educational Resources Information Center

    1975

    The two volume final report of the South Dakota Statewide Core Curriculum, Career Ladder, and Challenge System Project, coordinating associated health and nursing education on a statewide basis to achieve a more systematic production and utilization of health manpower, is presented. Volume 1 includes five chapters: (1) and (2) outlining funding…

  15. 23 CFR 450.222 - Applicability of NEPA to statewide transportation plans and programs.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Applicability of NEPA to statewide transportation plans and programs. 450.222 Section 450.222 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF... Programming § 450.222 Applicability of NEPA to statewide transportation plans and programs. Any decision...

  16. Feasibility and Implementation of a Statewide Evaluation of Substance Abuse Services

    ERIC Educational Resources Information Center

    Bordnick, Patrick S.; Waller, Raymond J.; King, Michael

    2004-01-01

    Statewide evaluations of mental health services are colossal undertakings, reports of which are few in the published literature. Social workers are often called on to conduct program evaluations of both small- and large-scale mental health systems. A statewide evaluation system was implemented in the state of Georgia in 1999 to measure the impact…

  17. 45 CFR 205.38 - Federal financial participation (FFP) for establishing a statewide mechanized system.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... system will be safeguarded in accordance with applicable Federal law; and (v) Access to the system in all... establishing a statewide mechanized system. 205.38 Section 205.38 Public Welfare Regulations Relating to Public... financial participation (FFP) for establishing a statewide mechanized system. (a) Effective July 1,...

  18. 45 CFR 205.38 - Federal financial participation (FFP) for establishing a statewide mechanized system.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... system will be safeguarded in accordance with applicable Federal law; and (v) Access to the system in all... establishing a statewide mechanized system. 205.38 Section 205.38 Public Welfare Regulations Relating to Public... financial participation (FFP) for establishing a statewide mechanized system. (a) Effective July 1,...

  19. 23 CFR 450.206 - Scope of the statewide transportation planning process.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ..., improve the quality of life, and promote consistency between transportation improvements and State and... statewide planning work program in accordance with the provisions of 23 CFR part 420. The work program... 23 Highways 1 2014-04-01 2014-04-01 false Scope of the statewide transportation planning...

  20. 23 CFR 450.206 - Scope of the statewide transportation planning process.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ..., improve the quality of life, and promote consistency between transportation improvements and State and... statewide planning work program in accordance with the provisions of 23 CFR part 420. The work program... 23 Highways 1 2010-04-01 2010-04-01 false Scope of the statewide transportation planning...

  1. 23 CFR 450.206 - Scope of the statewide transportation planning process.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ..., improve the quality of life, and promote consistency between transportation improvements and State and... statewide planning work program in accordance with the provisions of 23 CFR part 420. The work program... 23 Highways 1 2011-04-01 2011-04-01 false Scope of the statewide transportation planning...

  2. 23 CFR 450.206 - Scope of the statewide transportation planning process.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ..., improve the quality of life, and promote consistency between transportation improvements and State and... statewide planning work program in accordance with the provisions of 23 CFR part 420. The work program... 23 Highways 1 2013-04-01 2013-04-01 false Scope of the statewide transportation planning...

  3. 23 CFR 450.206 - Scope of the statewide transportation planning process.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ..., improve the quality of life, and promote consistency between transportation improvements and State and... statewide planning work program in accordance with the provisions of 23 CFR part 420. The work program... 23 Highways 1 2012-04-01 2012-04-01 false Scope of the statewide transportation planning...

  4. Geothermal Outreach and Project Financing

    SciTech Connect

    Elizabeth Battocletti

    2006-04-06

    The ?Geothermal Outreach and Project Financing? project substantially added to the understanding of geothermal resources, technology, and small business development by both the general public as well as those in the geothermal community.

  5. United Nations geothermal activities in developing countries

    SciTech Connect

    Beredjick, N.

    1987-07-01

    The United Nations implements technical cooperation projects in developing countries through its Department of Technical Cooperation for Development (DTCD). The DTCD is mandated to explore for and develop natural resources (water, minerals, and relevant infrastructure) and energy - both conventional and new and renewable energy sources. To date, the United Nations has been involved in over 30 geothermal exploration projects (completed or underway) in 20 developing countries: 8 in Africa (Djibouti, Ethiopia, Kenya, Madagascar); 8 in Asia (China, India, Jordan, Philippines, Thailand); 9 in Latin America (Bolivia, Chile, El Salvador, Honduras, Mexico, Nicaragua, Panama) and 6 in Europe (Greece, Romania, Turkey, Yugoslavia). Today, the DTCD has seven UNDP geothermal projects in 6 developing countries. Four of these (Bolivia, China, Honduras, and Kenya) are major exploration projects whose formulation and execution has been possible thanks to the generous contributions under cost-sharing arrangements from the government of Italy. These four projects are summarized.

  6. Geothermal power development: 1984 overview and update

    SciTech Connect

    DiPippo, R.

    1984-10-01

    The status of geothermal power plants as of mid-1984 is given. There are 15 countries with active plants, and France (Guadeloupe) is expected to join the roster in the near future. The total number of operating units (defined as individual turbo-generator sets) is 145; the total installed capacity is somewhat less than 3770 MW. If plans for additional plants are met, the total could jump by more than 200 MW over the next two years. Recent growth is presented and the worldwide installed capacity is traced. A graphic portrayal of the growth pattern is presented. The countries that will be most responsible for sustaining this growth are the US, the Philippines, Mexico, and Indonesia. Other countries that will contribute significantly include Italy, Japan, Kenya, Nicaragua, and Turkey. The following countries do not now have any geothermal plants but may bring some online by 1990: Guatemala, Costa Rica, Greece, St. Lucia, Thailand, and Ethiopia.

  7. Well-test data from geothermal reservoirs

    SciTech Connect

    Bodvarsson, M.G.; Benson, S.M.

    1982-09-01

    Extensive well testing in geothermal resources has been carried out throughout the western United States and in northern Mexico since 1975. Each resource tested and each well test conducted by LBL during the eight-year period are covered in brief. The information, collected from published reports and memoranda, includes test particulars, special instrumentation, data interpretation when available, and plots of actual data. Brief geologic and hydrologic descriptions of the geothermal resources are also presented. The format is such that well test descriptions are grouped, in the order performed, into major sections according to resource, each section containing a short resource description followed by individual test details. Additional information regarding instrumentation is provided. Source documentation is provided throughout to facilitate access to further information and raw data.

  8. A statewide strategy for nursing workforce development through partnerships in Texas.

    PubMed

    Kishi, Aileen; Green, Alexia

    2008-08-01

    Statewide efforts and partnerships were used for nursing workforce development to address the nursing shortage in Texas. A statewide strategic action plan was developed where partnerships and collaboration were the key components. One of the most important outcomes of these statewide partnerships was the passage of the Nursing Shortage Reduction Act 2001. Through this legislation, the Texas Center for Nursing Workforce Studies and its advisory committee were established. This article describes how a statewide infrastructure for nursing workforce policy and legislative and regulatory processes were further developed. An overview is provided on the contributions made by the organizations involved with these strategic partnerships. The ingredients for establishing successful, strategic partnerships are also identified. It is hoped that nursing and health care leaders striving to address the nursing shortage could consider statewide efforts such as those used in Texas to develop nursing workforce policy and legislation.

  9. Geothermal Direct Heat Applications Program Summary

    SciTech Connect

    1981-09-25

    Because of the undefined risk in the development and use of geothermal energy as a thermal energy source, the Department of Energy Division of Geothermal Energy solicited competitive proposals for field experiments in the direct use of geothermal energy. Twenty-two proposals were selected for cost-shared funding with one additional project co-funded by the State of New Mexico. As expected, the critical parameter was developing a viable resource. So far, of the twenty resources drilled, fourteen have proved to be useful resources. These are: Boise, Idaho; Elko heating Company in Nevada; Pagosa Springs, Colorado; Philip School, Philip, South Dakota; St. Mary's Hospital, Pierre, South Dakota; Utah Roses near Salt Lake City; Utah State Prison, Utah; Warm Springs State Hospital, Montana; T-H-S Hospital, Marlin, Texas; Aquafarms International in the Cochella Valley, California; Klamath County YMCA and Klamath Falls in Oregon; Susanville, California and Monroe, utah. Monroe's 164 F and 600 gpm peak flow was inadequate for the planned project, but is expected to be used in a private development. Three wells encountered a resource insufficient for an economical project. These were Madison County at Rexburg, Idaho; Ore-Ida Foods at Ontario, Oregon and Holly Sugar at Brawley, California. Three projects have yet to confirm their resource. The Navarro College well in Corsicana, Texas is being tested; the Reno, Moana, Nevada well is being drilled and the El Centro, California well is scheduled to be drilled in January 1982. The agribusiness project at Kelly Hot Springs was terminated because a significant archeological find was encountered at the proposed site. The Diamond Ring Ranch in South Dakota, and the additional project, Carrie Tingley Hospital in Truth or Consequences, New Mexico both used existing wells. The projects that encountered viable resources have proceeded to design, construct, and in the most advanced projects, to operate geothermal systems for district

  10. The geothermal power organization

    SciTech Connect

    Scholl, K.L.

    1997-12-31

    The Geothermal Power Organization is an industry-led advisory group organized to advance the state-of-the-art in geothermal energy conversion technologies. Its goal is to generate electricity from geothermal fluids in the most cost-effective, safe, and environmentally benign manner possible. The group achieves this goal by determining the Member`s interest in potential solutions to technological problems, advising the research and development community of the needs of the geothermal energy conversion industry, and communicating research and development results among its Members. With the creation and adoption of a new charter, the Geothermal Power Organization will now assist the industry in pursuing cost-shared research and development projects with the DOE`s Office of Geothermal Technologies.

  11. 20 CFR 665.100 - What are the Statewide workforce investment activities under title I of WIA?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... activities under title I of WIA? 665.100 Section 665.100 Employees' Benefits EMPLOYMENT AND TRAINING... title I of WIA? Statewide workforce investment activities include Statewide employment and training activities for adults and dislocated workers, as described in WIA section 134(a), and Statewide...

  12. 77 FR 5262 - Notice of Adjustment of Statewide Per Capita Indicator for Recommending a Cost Share Adjustment

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-02

    ... SECURITY Federal Emergency Management Agency Notice of Adjustment of Statewide Per Capita Indicator for...: FEMA gives notice that the statewide per capita indicator for recommending cost share adjustments for... 20472, (202) 646-3834. SUPPLEMENTARY INFORMATION: Pursuant to 44 CFR 206.47, the statewide per...

  13. 78 FR 9935 - Notice of Adjustment of Statewide Per Capita Indicator for Recommending a Cost Share Adjustment

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-12

    ... SECURITY Federal Emergency Management Agency Notice of Adjustment of Statewide Per Capita Indicator for...: FEMA gives notice that the statewide per capita indicator for recommending cost share adjustments for... 20472, (202) 646-3834. SUPPLEMENTARY INFORMATION: Pursuant to 44 CFR 206.47, the statewide per...

  14. Water availability and usage on the New Mexico/Mexico border.

    PubMed

    Li, Yongmei; Arnold, Stephen D; Kozel, Charles; Forster-Cox, Sue

    2005-10-01

    New Mexico, one of four states on the U.S./Mexico border, is faced with a pressing concern--lack of water. Since the region is either arid or semiarid, it is chronically short of continually available surface-water resources. Groundwater resources are used beyond their capacity to be recharged, and most surface-water resources are used to the maximum. The quality of groundwater varies widely. As a result of nonpoint- and point-source contamination, as well as natural occurrence, water in some areas is too salty or has high levels of natural uranium, fluoride, or arsenic. To date, the New Mexico Environment Department (NMED) has recognized 1,400 cases of groundwater contamination, and 1,907 water supply wells have been affected (NMED, 2001a). Of approximate 4,000 miles of coninously flowing rivers and streams in New Mexico, 92 perent are affected by nonpoint sources of pollution (NMED, 2001b). Numerous critical water issues exist along the New Mexico/Mexico border as a result of the impending critical issue of water availability, usage, and quality, as well as the fast-growing population. Related public health problems along the New Mexico/Mexico border are indicative of the need for a holistic, concrete, and sustainable solution to meet water demands in New Mexico. In order to accomplish the goals an objectives of Border XXI, Healthy People 2010, and Heathy Border 2010, a comprehensive statewide water management plan is needed. Solutions to the water demands of the region will be addressed in a subsequent manuscript.

  15. Geothermal drilling technology update

    SciTech Connect

    Glowka, D.A.

    1997-04-01

    Sandia National Laboratories conducts a comprehensive geothermal drilling research program for the US Department of Energy, Office of Geothermal Technologies. The program currently includes seven areas: lost circulation technology, hard-rock drill bit technology, high-temperature instrumentation, wireless data telemetry, slimhole drilling technology, Geothermal Drilling Organization (GDO) projects, and drilling systems studies. This paper describes the current status of the projects under way in each of these program areas.

  16. Geothermal Today - 1999

    SciTech Connect

    2000-05-01

    U.S. Department of Energy 1999 Geothermal Energy Program Highlights The Hot Facts Getting into Hot Water Turning Waste water into Clean Energy Producing Even Cleaner Power Drilling Faster and Cheaper Program in Review 1999: The Year in Review JanuaryCal Energy announced sale of Coso geothermal power plants at China Lake, California, to Caithness Energy, for $277 million. U.S. Export-Import Bank completed a $50 million refinancing of the Leyte Geothermal Optimization Project in the Philippines. F

  17. Geothermal drilling research overview

    SciTech Connect

    Glowka, D.A.

    1996-04-10

    Sandia conducts a comprehensive geothermal drilling research program for the US Department of Energy. The program currently consists of eight program areas: lost circulation technology; advanced synthetic-diamond drill bit technology, high-temperature logging technology; acoustic technology; slimhole drilling technology; drilling systems studies; Geothermal Drilling Organization projects; and geothermal heat pump technology. This paper provides justification and describes the projects underway in each program area.

  18. Modeling of geothermal systems

    SciTech Connect

    Bodvarsson, G.S.; Pruess, K.; Lippmann, M.J.

    1985-03-01

    During the last decade the use of numerical modeling for geothermal resource evaluation has grown significantly, and new modeling approaches have been developed. In this paper we present a summary of the present status in numerical modeling of geothermal systems, emphasizing recent developments. Different modeling approaches are described and their applicability discussed. The various modeling tasks, including natural-state, exploitation, injection, multi-component and subsidence modeling, are illustrated with geothermal field examples. 99 refs., 14 figs.

  19. Geothermal Today - 2001

    SciTech Connect

    2001-08-01

    U.S. Department of Energy Geothermal Energy Program Highlights Partnering with Industry A New Power Source for Nevada Drilling Research Finding Geothermal Resources Small-Scale Geothermal Power Plants The Heat Beneath Your Feet R&D 100 Award Program in Review Milestones January 2000 The U.S. Department of Energy GeoPowering the West initiative was launched. February 2000 Grants totaling $4.8 million were awarded in six western states, primarily for development of reservoir exploration, character

  20. Geothermal energy program overview

    NASA Astrophysics Data System (ADS)

    1991-12-01

    The mission of the Geothermal Energy Program is to develop the science and technology necessary for tapping our nation's tremendous heat energy sources contained within the Earth. Geothermal energy is a domestic energy source that can produce clean, reliable, cost-effective heat and electricity for our nation's energy needs. Geothermal energy - the heat of the Earth - is one of our nation's most abundant energy resources. In fact, geothermal energy represents nearly 40 percent of the total U.S. energy resource base and already provides an important contribution to our nation's energy needs. Geothermal energy systems can provide clean, reliable, cost-effective energy for our nation's industries, businesses, and homes in the form of heat and electricity. The U.S. Department of Energy's (DOE) Geothermal Energy Program sponsors research aimed at developing the science and technology necessary for utilizing this resource more fully. Geothermal energy originates from the Earth's interior. The hottest fluids and rocks at accessible depths are associated with recent volcanic activity in the western states. In some places, heat comes to the surface as natural hot water or steam, which have been used since prehistoric times for cooking and bathing. Today, wells convey the heat from deep in the Earth to electric generators, factories, farms, and homes. The competitiveness of power generation with lower quality hydrothermal fluids, geopressured brines, hot dry rock, and magma (the four types of geothermal energy), still depends on the technical advancements sought by DOE's Geothermal Energy Program.

  1. GEOTHERM user guide

    USGS Publications Warehouse

    Swanson, James R.

    1977-01-01

    GEOTHERM is a computerized geothermal resources file developed by the U.S. Geological Survey. The file contains data on geothermal fields, wells, and chemical analyses from the United states and international sources. The General Information Processing System (GIPSY) in the IBM 370/155 computer is used to store and retrieve data. The GIPSY retrieval program contains simple commands which can be used to search the file, select a narrowly defined subset, sort the records, and output the data in a variety of forms. Eight commands are listed and explained so that the GEOTHERM file can be accessed directly by geologists. No programming experience is necessary to retrieve data from the file.

  2. Geothermal Energy Program overview

    SciTech Connect

    Not Available

    1991-12-01

    The mission of the Geothermal Energy Program is to develop the science and technology necessary for tapping our nation's tremendous heat energy sources contained with the Earth. Geothermal energy is a domestic energy source that can produce clean, reliable, cost- effective heat and electricity for our nation's energy needs. Geothermal energy -- the heat of the Earth -- is one of our nation's most abundant energy resources. In fact, geothermal energy represents nearly 40% of the total US energy resource base and already provides an important contribution to our nation's energy needs. Geothermal energy systems can provide clean, reliable, cost-effective energy for our nation's industries, businesses, and homes in the form of heat and electricity. The US Department of Energy's (DOE) Geothermal Energy Program sponsors research aimed at developing the science and technology necessary for utilizing this resource more fully. Geothermal energy originates from the Earth's interior. The hottest fluids and rocks at accessible depths are associated with recent volcanic activity in the western states. In some places, heat comes to the surface as natural hot water or steam, which have been used since prehistoric times for cooking and bathing. Today, wells convey the heat from deep in the Earth to electric generators, factories, farms, and homes. The competitiveness of power generation with lower quality hydrothermal fluids, geopressured brines, hot dry rock, and magma ( the four types of geothermal energy) still depends on the technical advancements sought by DOE's Geothermal Energy Program.

  3. Geothermal Life Cycle Calculator

    DOE Data Explorer

    Sullivan, John

    2014-03-11

    This calculator is a handy tool for interested parties to estimate two key life cycle metrics, fossil energy consumption (Etot) and greenhouse gas emission (ghgtot) ratios, for geothermal electric power production. It is based solely on data developed by Argonne National Laboratory for DOE’s Geothermal Technologies office. The calculator permits the user to explore the impact of a range of key geothermal power production parameters, including plant capacity, lifetime, capacity factor, geothermal technology, well numbers and depths, field exploration, and others on the two metrics just mentioned. Estimates of variations in the results are also available to the user.

  4. WHITE MOUNTAIN WILDERNESS, NEW MEXICO.

    USGS Publications Warehouse

    Segerstrom, Kenneth; Stotelmeyer, R.B.

    1984-01-01

    On the basis of a mineral survey the White Mountain Wilderness, which constitutes much of the western and northern White Mountains, New Mexico, is appraised to have six areas of probable mineral potential for base and precious metals. If mineral deposits exist in the wilderness, the potential is for small deposits of base and precious metals in veins and breccia pipes or, more significanlty, the possibility for large low-grade disseminated porphyry-type molybdenum deposits. There is little promise for the occurrence of geothermal energy resources in the area.

  5. White Mountain Wilderness, New Mexico

    SciTech Connect

    Segerstrom, K.; Stotelmeyer, R.B.

    1984-01-01

    On the basis of a mineral survey made during 1971-1973, the White Mountain Wilderness, which constitutes much of the western and northern White Mountains, New Mexico, is appraised to have six areas of probable mineral potential for base and precious metals. In mineral deposits exist in the wilderness, the potential is for small deposits of base and precious metals in veins and breccia pipes or, more significantly, the possibility for large low-grade disseminated porphyry-type molybdenum deposits. There is little promise for the occurrence of geothermal energy resources in the area.

  6. Assessment of statewide annual streamflow in New Mexico, 1985-2013

    USGS Publications Warehouse

    Affinati, Joseph Anthony; Myers, Nathan C.

    2015-01-01

    The San Francisco River annual flows were relatively high compared to other years in the study in 1985, 1991–93, 1995, and 2005 but were near or below average for the rest of the years of the study. Both reaches on the San Francisco River were gaining reaches for all 29 years of the study.

  7. Eleventh workshop on geothermal reservoir engineering: Proceedings

    SciTech Connect

    Ramey, H.J. Jr.; Kruger, P.; Miller, F.G.; Horne, R.N.; Brigham, W.E.; Counsil, J.R.

    1986-01-23

    The Eleventh Workshop on Geothermal Reservoir Engineering was held at Stanford University on January 21-23, 1986. The attendance was up compared to previous years, with 144 registered participants. Ten foreign countries were represented: Canada, England, France, Iceland, Indonesia, Italy, Japan, Mexico, New Zealand and Turkey. There were 38 technical presentations at the Workshop which are published as papers in this Proceedings volume. Six technical papers not presented at the Workshop are also published and one presentation is not published. In addition to these 45 technical presentations or papers, the introductory address was given by J. E. Mock from the Department of Energy. The Workshop Banquet speaker was Jim Combs of Geothermal Resources International, Inc. We thank him for his presentation on GEO geothermal developments at The Geysers. The chairmen of the technical sessions made an important contribution to the Workshop. Other than Stanford faculty members they included: M. Gulati, E. Iglesias, A. Moench, S. Prestwich, and K. Pruess. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and students. We would like to thank J.W. Cook, J.R. Hartford, M.C. King, A.E. Osugi, P. Pettit, J. Arroyo, J. Thorne, and T.A. Ramey for their valued help with the meeting arrangements and preparing the Proceedings. We also owe great thanks to our students who arranged and operated the audio-visual equipment. The Eleventh Workshop was supported by the Geothermal Technology Division of the U.S. Department of Energy through Contract DE-AS03-80SF11459. We deeply appreciate this continued support. January 1986 H.J. Ramey, Jr. P. Kruger R.N. Horne W.E. Brigham F.G. Miller J.R. Counsil

  8. Eighteenth workshop on geothermal reservoir engineering: Proceedings

    SciTech Connect

    Ramey, H.J. Jr.; Horne, R.J.; Kruger, P.; Miller, F.G.; Brigham, W.E.; Cook, J.W.

    1993-01-28

    PREFACE The Eighteenth Workshop on Geothermal Reservoir Engineering was held at Stanford University on January 26-28, 1993. There were one hundred and seventeen registered participants which was greater than the attendance last year. Participants were from eight foreign countries: Italy, Japan, United Kingdom, Mexico, New Zealand, the Philippines, Guatemala, and Iceland. Performance of many geothermal fields outside the United States was described in several of the papers. Dean Gary Ernst opened the meeting and welcomed the visitors to the campus. The key note speaker was J.E. ''Ted'' Mock who gave a brief overview of the Department of Energy's current plan. The Stanford Geothermal Program Reservoir Engineering Award for Excellence in Development of Geothermal Energy was awarded to Dr. Mock who also spoke at the banquet. Thirty-nine papers were presented at the Workshop with two papers submitted for publication only. Technical papers were organized in twelve sessions concerning: field operations, The Geysers, geoscience, hot-dry-rock, injection, modeling, slim hole wells, geochemistry, well test and wellbore. Session chairmen were major contributors to the program and we thank: John Counsil, Kathleen Enedy, Harry Olson, Eduardo Iglesias, Marcelo Lippmann, Paul Atkinson, Jim Lovekin, Marshall Reed, Antonio Correa, and David Faulder. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and graduate students. We wish to thank Pat Ota, Ted Sumida, and Terri A. Ramey who also produces the Proceedings Volumes for publication. We owe a great deal of thanks to our students who operate audiovisual equipment and to John Hornbrook who coordinated the meeting arrangements for the Workshop. Henry J. Ramey, Jr. Roland N. Horne Frank G. Miller Paul Kruger William E. Brigham Jean W. Cook

  9. Another Mexico

    ERIC Educational Resources Information Center

    Romano, Carlin

    2009-01-01

    A Mexican saying holds that "Como Mexico no hay dos"--There is only one Mexico. American media these days interpret that notion with a vengeance. Story after story depicts a country overrun by out-of-control drug wars and murder, where corrupt police officers trip over beheaded victims more often than they nab perpetrators. South of the border, a…

  10. Geothermal energy development in the Philippines: An overview

    SciTech Connect

    Sussman, D.; Javellana, S.P.; Benavidez, P.J.

    1993-10-01

    The Philippines is the third largest producer of geothermal electricity after the US and Mexico. Geothermal exploration was started in 1962, and the first large commercial power plants came on-line in 1979 in two fields. By 1984, four geothermal fields had a combined installed capacity of 890 MWe and in 1992 these plants supplied about 20% of the country`s electric needs. Geothermal energy development was stimulated in the mid-1970s by the oil crisis and rapidly growing power demand, government support, available foreign funding, and a combination of private and government investment and technical expertise. However, no new geothermal capacity has been added since 1984, despite the growing demand for energy and the continuing uncertainty in the supply of crude oil. The Philippines` geothermal capacity is expected to expand by 270--1,100 MWe by the end of 1999. Factors that will affect the rate growth in this decade include suitable legislation, environmental requirements, financing, degree of private involvement, politics, inter-island electric grid connections, and viability of the remaining prospects.

  11. Some considerations on the optimum size for geothermal turbine

    SciTech Connect

    Cadenas, C.

    1996-12-31

    The main focus of this work is to show the maximum capacity that is possible from a geothermal turbine. The theorical analysis is made using the concept of the maximum length of the last wheel blades. The theoretical results are compared with the main manufacturers existing information on steam turbines for geothermal application. This work also shows some operational concepts and observations from the central plants installed in the Mexican geothermal fields. In Mexico, from approximately 1970 to present, 28 turbines for geothermal application have been acquired. These turbines have capacities ranging from 1.5 MW to 110 MW, with a total installed capacity of 753 MW. To expand the installed capacity, we would be required to improve the way turbines are selected for all new geothermal projects. Because of the diverse panorama of steam geothermal turbines that are offered at the present time, it is very important to know the maximum capacity that one could get for the established thermodynamic conditions of the steam in the Mexican fields, in order to exploit the resource in the most efficient, economical and functional manner.

  12. CABALLO AND POLVADERA ROADLESS AREAS, NEW MEXICO.

    USGS Publications Warehouse

    Manley, Kim; Lane, Michael

    1984-01-01

    A mineral-resource survey has been conducted for the Caballo and Polvadera Roadless Areas, Los Alamos and Rio Arriba Counties, New Mexico. The rocks in the study areas are chiefly volcanic with minor volcaniclastic sedimentary rocks. There is little promise for the occurrence of mineral or fossil fuel resources in the areas. There has been no mining activity within the roadless areas and chemical analyses of stream-sediment samples show no significant anomalous concentrations of metals. There has been some interest in geothermal resources near the Polvadera Roadless Area and a KGRA (Known Geothermal Resource Area) extends into the southwestern corner of the area. This area has been classified as having probable geothermal-resource potential.

  13. Beliefs about breastfeeding: a statewide survey of health professionals.

    PubMed

    Barnett, E; Sienkiewicz, M; Roholt, S

    1995-03-01

    A statewide project was implemented in 1993 to increase breastfeeding among low-income women in North Carolina through improved institutional policies and practices and professional lactation-management skills. A survey designed to ascertain professional beliefs about breastfeeding was mailed to 31 hospitals and 25 public health agencies. A total of 2209 health professionals completed the survey and met the study selection criteria. Nutritionists and pediatricians were most likely to have positive beliefs about breastfeeding, whereas hospital nurses were most likely to have negative beliefs. Personal breastfeeding experience contributed to positive beliefs. Professionals were least convinced of the emotional benefits of breastfeeding. Those with negative beliefs were most likely to advocate complete infant weaning from the breast before nine months of age. Although most health professionals had positive beliefs about breastfeeding, differences by profession, work environment, and personal breastfeeding experience indicate the need for comprehensive training in lactation management, and improvements in hospital and public health clinic environments. PMID:7741946

  14. Toward a statewide health information technology center (abbreviated version).

    PubMed

    Sittig, Dean F; Joe, John C

    2010-11-01

    With the passage of The American Reinvestment and Recovery Act of 2009 that includes the Health Care Information Technology for Economic & Clinical Health Act, the opportunity for states to develop a Health Information Technology Center (THITC) has emerged. The Center provides the intellectual, financial, and technical leadership along with the governance and oversight for all health information technology-related activities in the state. This Center would be a free-standing, not-for-profit, public-private partnership that would be responsible for operating one or more (in large states) Regional Health Information Technology Extension Centers (Extension Centers) along with several Regional Health Information Exchanges (HIEs) and one or more Regional Health Information Data Centers (Data Centers). We believe that if these features and functions could be developed, deployed, and integrated statewide, the health and welfare of the citizens of the state could be improved while simultaneously reducing the costs associated with the provision of care.

  15. A state-wide assessment: marital stability and client outcomes.

    PubMed

    Hartmann, D J; Sullivan, W P; Wolk, J L

    1991-12-01

    This paper presents results of Missouri's first statewide evaluation of alcohol and drug treatment programs. The study utilized a 1-year follow-up sample of 242 respondents to explore the nature and patterns of post-treatment functioning. This paper focuses on the impact of client marital stability on post-treatment substance use. The data supported the expected result that marital status was related to post-treatment relapse. Further analysis suggests that transitional periods between marriage and divorce are especially important in understanding the pattern of relapse after treatment. Multivariate analysis indicates that the marital status effect is important both directly and in interaction with program completion. The data suggest that attention to transitional states and interpersonal functioning should be incorporated into client follow-up.

  16. Geothermal Financing Workbook

    SciTech Connect

    Battocletti, E.C.

    1998-02-01

    This report was prepared to help small firm search for financing for geothermal energy projects. There are various financial and economics formulas. Costs of some small overseas geothermal power projects are shown. There is much discussion of possible sources of financing, especially for overseas projects. (DJE-2005)

  17. Location of Geothermal Resources

    SciTech Connect

    2004-07-01

    Geothermal resources, which utilize the heat of the earth, are located throughout the plant's crust. Those closer to the surface are most commonly used because geothermal drilling costs are currently prohibitive below depths of between 10,000 and 15,000 feet.

  18. Volcanology and geothermal energy

    SciTech Connect

    Wohletz, K.; Heiken, G.

    1992-01-01

    The aim of this book is to demonstrate how volcanological concepts can be applied to the evaluation and exploration of geothermal energy resources. In regard to the geothermal content of the book, some of the information comes from the first-hand experience gained during the authors' exploration work in Middle America and with the Los Alamos Hot Dry Rock program. Other cases discussed come from classic geothermal systems in many regions and settings. The book begins with a summary of recent practical advances in volcanology, and then moves on to describe the considerable importance of pyroclastic rocks as a took to evaluate geothermal systems, including an in-depth treatment of hydrovolcanism. Following chapters deal with surface manifestations of geothermal systems, and systems associated with calderas, silicic lava domes, and basaltic volcanoes. The last chapter is on geothermal systems in maturing composite volcanoes. The Appendices include a broad overview of field methods in volcanic regions, volcanic rock classifications and properties, thermodynamic properties of water vapor (steam tables), and the use of cuttings in geothermal well logs. A two-dimensional heat flow code used for estimating geothermal resources is also given. The book makes two significant contributions: first, in its treatment of eruption dynamics, focusing on quantitative and theoretical analysis of volcanic processes, and second, in its comprehensive treatment of the fundamentals of hydrovolcanism, including fuel-coolant interactions and hydrofracturing.

  19. Geothermal energy program summary

    SciTech Connect

    Not Available

    1990-01-01

    This document reviews Geothermal Energy Technology and the steps necessary to place it into service. Specific topics covered are: four types of geothermal resources; putting the resource to work; power generation; FY 1989 accomplishments; hard rock penetration; conversion technology; and geopressured brine research. 16 figs. (FSD)

  20. Geothermal Energy & Economic Development

    SciTech Connect

    2004-07-01

    Whether they are used to generate electricity or for direct-use applications, geothermal energy projects contribute to the economy of areas where they are located. Geothermal power plant operations are often a major source of tax revenue to local governments.

  1. Low- to moderate-temperature geothermal resource assessment for Nevada: area specific studies, Pumpernickel Valley, Carlin and Moana. Final report June 1, 1981-July 31, 1982

    SciTech Connect

    Trexler, D.T.; Flynn, T.; Koenig, B.A.; Bell, E.J.; Ghusn, G. Jr.

    1982-01-01

    Geological, geophysical and geochemical surveys were used in conjunction with temperature gradient hole drilling to assess the geothermal resources in Pumpernickel Valley and Carlin, Nevada. This program is based on a statewide assessment of geothermal resources that was completed in 1979. The exploration techniques are based on previous federally-funded assessment programs that were completed in six other areas in Nevada and include: literature search and compilation of existing data, geologic reconnaissance, chemical sampling of thermal and non-thermal fluids, interpretation of satellite imagery, interpretation of low-sun angle aerial photographs, two-meter depth temperature probe survey, gravity survey, seismic survey, soil-mercury survey, and temperature gradient drilling.

  2. Geothermal energy: a brief assessment

    SciTech Connect

    Lunis, B.C.; Blackett, R.; Foley, D.

    1982-07-01

    This document includes discussions about geothermal energy, its applications, and how it is found and developed. It identifies known geothermal resources located in Western's power marketing area, and covers the use of geothermal energy for both electric power generation and direct applications. Economic, institutional, environmental, and other factors are discussed, and the benefits of the geothermal energy resource are described.

  3. Hydraulic Fracture Stimulation and Acid Treatment of Well Baca 20; Geothermal Reservoir Well Stimulation Program

    SciTech Connect

    1983-07-01

    The U.S. Department of Energy-sponsored Geothermal Reservoir Well Stimulation Program was initiated in February 1979 to pursue industry interest in geothermal well stimulation work and to develop technical expertise in areas directly related to geothermal well stimulation activities. This report provides an overview of the two experiments conducted in the high-temperature reservoir in Baca, New Mexico. The report discusses resource and reservoir properties, and provides a description of the stimulation experiment, a description of the treatment evaluation, and a summary of the experiment costs. (DJE-2005)

  4. Fort Bliss Geothermal Area Data: Temperature profile, logs, schematic model and cross section

    SciTech Connect

    Adam Brandt

    2015-11-15

    This dataset contains a variety of data about the Fort Bliss geothermal area, part of the southern portion of the Tularosa Basin, New Mexico. The dataset contains schematic models for the McGregor Geothermal System, a shallow temperature survey of the Fort Bliss geothermal area. The dataset also contains Century OH logs, a full temperature profile, and complete logs from well RMI 56-5, including resistivity and porosity data, drill logs with drill rate, depth, lithology, mineralogy, fractures, temperature, pit total, gases, and descriptions among other measurements as well as CDL, CNL, DIL, GR Caliper and Temperature files. A shallow (2 meter depth) temperature survey of the Fort Bliss geothermal area with 63 data points is also included. Two cross sections through the Fort Bliss area, also included, show well position and depth. The surface map included shows faults and well spatial distribution. Inferred and observed fault distributions from gravity surveys around the Fort Bliss geothermal area.

  5. Advanced Geothermal Turbodrill

    SciTech Connect

    W. C. Maurer

    2000-05-01

    Approximately 50% of the cost of a new geothermal power plant is in the wells that must be drilled. Compared to the majority of oil and gas wells, geothermal wells are more difficult and costly to drill for several reasons. First, most U.S. geothermal resources consist of hot, hard crystalline rock formations which drill much slower than the relatively soft sedimentary formations associated with most oil and gas production. Second, high downhole temperatures can greatly shorten equipment life or preclude the use of some technologies altogether. Third, producing viable levels of electricity from geothermal fields requires the use of large diameter bores and a high degree of fluid communication, both of which increase drilling and completion costs. Optimizing fluid communication often requires creation of a directional well to intersect the best and largest number of fracture capable of producing hot geothermal fluids. Moineau motor stators made with elastomers cannot operate at geothermal temperatures, so they are limited to the upper portion of the hole. To overcome these limitations, Maurer Engineering Inc. (MEI) has developed a turbodrill that does not use elastomers and therefore can operate at geothermal temperatures. This new turbodrill uses a special gear assembly to reduce the output speed, thus allowing a larger range of bit types, especially tri-cone roller bits, which are the bits of choice for drilling hard crystalline formations. The Advanced Geothermal Turbodrill (AGT) represents a significant improvement for drilling geothermal wells and has the potential to significantly reduce drilling costs while increasing production, thereby making geothermal energy less expensive and better able to compete with fossil fuels. The final field test of the AGT will prepare the tool for successful commercialization.

  6. Thirteenth workshop on geothermal reservoir engineering: Proceedings

    SciTech Connect

    Ramey, H.J. Jr.; Kruger, P.; Horne, R.N.; Brigham, W.E.; Miller, F.G.; Cook, J.W.

    1988-01-21

    PREFACE The Thirteenth Workshop on Geothermal Reservoir Engineering was held at Stanford University on January 19-21, 1988. Although 1987 continued to be difficult for the domestic geothermal industry, world-wide activities continued to expand. Two invited presentations on mature geothermal systems were a keynote of the meeting. Malcolm Grant presented a detailed review of Wairakei, New Zealand and highlighted plans for new development. G. Neri summarized experience on flow rate decline and well test analysis in Larderello, Italy. Attendance continued to be high with 128 registered participants. Eight foreign countries were represented: England, France, Iceland, Italy, New Zealand, Japan, Mexico and The Philippines. A discussion of future workshops produced a strong recommendation that the Stanford Workshop program continue for the future. There were forty-one technical presentations at the Workshop. All of these are published as papers in this Proceedings volume. Four technical papers not presented at the Workshop are also published. In addition to these forty five technical presentations or papers, the introductory address was given by Henry J. Ramey, Jr. from the Stanford Geothermal Program. The Workshop Banquet speaker was Gustavo Calderon from the Inter-American Development Bank. We thank him for sharing with the Workshop participants a description of the Bank???s operations in Costa Rica developing alternative energy resources, specifically Geothermal, to improve the country???s economic basis. His talk appears as a paper in the back of this volume. The chairmen of the technical sessions made an important contribution to the workshop. Other than Stanford faculty members they included: J. Combs, G. T. Cole, J. Counsil, A. Drenick, H. Dykstra, K. Goyal, P. Muffler, K. Pruess, and S. K. Sanyal. The Workshop was organized by the Stanford Geothermal Program faculty, staff and students. We would like to thank Marilyn King, Pat Oto, Terri Ramey, Bronwyn Jones

  7. Geothermal Field Case Studies that Document the Usefulness of Models in Predicting Reservoir and Well Behavior

    SciTech Connect

    Lippmann, Marcelo J.

    1989-03-21

    The geothermal industry has shown significant interest in case histories that document field production histories and demonstrate the techniques which work best in the characterization and evaluation of geothermal systems. In response to this interest, LBL has devoted a significant part of its geothermal program to the compilation and analysis of data from US and foreign fields (e.g., East Mesa, The Geysers, Susanville, and Long Valley in California; Klamath Fall in Oregon; Valles Caldera, New Mexico; Cerro Prieto and Los Azufres in Mexico; Krafla and Nesjavellir in Iceland; Larderello in Italy; Olkaria in Kenya). In each of these case studies we have been able to test and validate in the field, or against field data, the methodology and instrumentation developed under the Reservoir Technology Task of the DOE Geothermal Program, and to add to the understanding of the characteristics and processes occurring in geothermal reservoirs. Case study results of the producing Cerro Prieto and Olkaria geothermal fields are discussed in this paper. These examples were chosen because they illustrate the value of conceptual and numerical models to predict changes in reservoir conditions, reservoir processes, and well performance that accompany field exploitation, as well as to reduce the costs associated with the development and exploitation of geothermal resources.

  8. Geothermal field case studies that document the usefulness of models in predicting reservoir and well behavior

    SciTech Connect

    Lippmann, M.J.

    1989-03-01

    The geothermal industry has shown significant interest in case histories that document field production histories and demonstrate the techniques which work best in the characterization and evaluation of geothermal systems. In response to this interest, LBL has devoted a significant art of its geothermal program to the compilation and analysis of data from US and foreign fields (e.g., East Mesa, The Geysers, Susanville, and Long Valley in California; Klamath Falls in Oregon; Valles Caldera, New Mexico; Cerro Prieto and Los Azufres in Mexico; Krafla and Nesjavellir in Iceland; Larderello in Italy; Olkaria in Kenya). In each of these case studies we have been able to test and validate in the field, or against field data, the methodology and instrumentation developed under the Reservoir Technology Task of the DOE Geothermal Program, and to add to the understanding of the characteristics and processes occurring in geothermal reservoirs. Case study results of the producing Cerro Prieto and Olkaria geothermal fields are discussed in this paper. These examples were chosen because they illustrate the value of conceptual and numerical models to predict changes in reservoir conditions, reservoir processes, and well performance that accompany field exploitation, as well as to reduce the costs associated with the development and exploitation of geothermal resources. 14 refs., 6 figs.

  9. Geothermal resource requirements for an energy self-sufficient spaceport

    SciTech Connect

    Kruger, P.; Fioravanti, M.; Duchane, D.; Vaughan, A.

    1997-01-01

    Geothermal resources in the southwestern United States provide an opportunity for development of isolated spaceports with local energy self-sufficiency. Geothermal resources can provide both thermal energy and electrical energy for the spaceport facility infrastructure and production of hydrogen fuel for the space vehicles. In contrast to hydrothermal resources by which electric power is generated for sale to utilities, hot dry rock (HDR) geothermal resources are more wide-spread and can be more readily developed at desired spaceport locations. This paper reviews a dynamic model used to quantify the HDR resources requirements for a generic spaceport and estimate the necessary reservoir size and heat extraction rate. The paper reviews the distribution of HDR resources in southern California and southern New Mexico, two regions where a first developmental spaceport is likely to be located. Finally, the paper discusses the design of a HDR facility for the generic spaceport and estimates the cost of the locally produced power.

  10. Utilization of geothermal resources at United States Air Force bases

    SciTech Connect

    Grogger, P.K.

    1980-09-01

    The Air Force installations on the continental United States as well as Alaska and Hawaii, were evaluated as to the possibility of utilizing geothermal energy to develop electricity, produce process steam, or heat and/or cool buildings. Twenty-five bases have suspected geothermal resources available. Because of either need or available technology seven installations were rated priority I, six were rated priority II and priority III and IV totaled ten. Geological and geophysical data indicated further investigation of the priority I installations, Saylor Creek Range, Idaho, Ellsworth AFB, South Dakota, Charleston AFB, South Carolina, Kirkland AFB, New Mexico, Vandenberg AFB, California, Luke AFB, Arizona, and Williams AFB, Arizona, should be accomplished as soon as possible. The use of geothermal energy will decrease the need for fossil fuels by the USAF and during times of short supply allow such fuels to be used for the Air Force's primary mission, military defense.

  11. Twentieth workshop on geothermal reservoir engineering: Proceedings

    SciTech Connect

    1995-01-26

    PREFACE The Twentieth Workshop on Geothermal Reservoir Engineering, dedicated to the memory of Professor Hank Ramey, was held at Stanford University on January 24-26, 1995. There were ninety-five registered participants. Participants came from six foreign countries: Japan, Mexico, England, Italy, New Zealand and Iceland. The performance of many geothermal reservoirs outside the United States was described in several of the papers. Professor Roland N. Horne opened the meeting and welcomed visitors to the campus. The key note speaker was Marshall Reed, who gave a brief overview of the Department of Energy's current plan. Thirty-two papers were presented in the technical sessions of the workshop. Technical papers were organized into eleven sessions concerning: field development, modeling, well tesubore, injection, geoscience, geochemistry and field operations. Session chairmen were major contributors to the workshop, and we thank: Ben Barker, Bob Fournier, Mark Walters, John Counsil, Marcelo Lippmann, Keshav Goyal, Joel Renner and Mike Shook. In addition to the technical sessions, a panel discussion was held on ''What have we learned in 20 years?'' Panel speakers included Patrick Muffler, George Frye, Alfred Truesdell and John Pritchett. The subject was further discussed by Subir Sanyal, who gave the post-dinner speech at the banquet. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and graduate students. We wish to thank our students who operated the audiovisual equipment. Shaun D. Fitzgerald Program Manager

  12. Arsenic in volcanic geothermal fluids of Latin America.

    PubMed

    López, Dina L; Bundschuh, Jochen; Birkle, Peter; Armienta, Maria Aurora; Cumbal, Luis; Sracek, Ondra; Cornejo, Lorena; Ormachea, Mauricio

    2012-07-01

    Numerous volcanoes, hot springs, fumaroles, and geothermal wells occur in the Pacific region of Latin America. These systems are characterized by high As concentrations and other typical geothermal elements such as Li and B. This paper presents a review of the available data on As concentrations in geothermal systems and their surficial discharges and As data on volcanic gases of Latin America. Data for geothermal systems in Mexico, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, Ecuador, Bolivia, and Chile are presented. Two sources of As can be recognized in the investigated sites: Arsenic partitioned into volcanic gases and emitted in plumes and fumaroles, and arsenic in rocks of volcanic edifices that are leached by groundwaters enriched in volcanic gases. Water containing the most elevated concentrations of As are mature Na-Cl fluids with relatively low sulfate content and As concentrations reaching up to 73.6 mg L⁻¹ (Los Humeros geothermal field in Mexico), but more commonly ranging from a few mg L⁻¹ to tens of mg L⁻¹. Fluids derived from Na-Cl enriched waters formed through evaporation and condensation at shallower depths have As levels of only a few μg L⁻¹. Mixing of Na-Cl waters with shallower meteoric waters results in low to intermediate As concentrations (up to a few mg L⁻¹). After the waters are discharged at the ground surface, As(III) oxidizes to As(V) and attenuation of As concentration can occur due to sorption and co-precipitation processes with iron minerals and organic matter present in sediments. Understanding the mechanisms of As enrichment in geothermal waters and their fate upon mixing with shallower groundwater and surface waters is important for the protection of water resources in Latin America. PMID:22285066

  13. Arsenic in volcanic geothermal fluids of Latin America.

    PubMed

    López, Dina L; Bundschuh, Jochen; Birkle, Peter; Armienta, Maria Aurora; Cumbal, Luis; Sracek, Ondra; Cornejo, Lorena; Ormachea, Mauricio

    2012-07-01

    Numerous volcanoes, hot springs, fumaroles, and geothermal wells occur in the Pacific region of Latin America. These systems are characterized by high As concentrations and other typical geothermal elements such as Li and B. This paper presents a review of the available data on As concentrations in geothermal systems and their surficial discharges and As data on volcanic gases of Latin America. Data for geothermal systems in Mexico, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, Ecuador, Bolivia, and Chile are presented. Two sources of As can be recognized in the investigated sites: Arsenic partitioned into volcanic gases and emitted in plumes and fumaroles, and arsenic in rocks of volcanic edifices that are leached by groundwaters enriched in volcanic gases. Water containing the most elevated concentrations of As are mature Na-Cl fluids with relatively low sulfate content and As concentrations reaching up to 73.6 mg L⁻¹ (Los Humeros geothermal field in Mexico), but more commonly ranging from a few mg L⁻¹ to tens of mg L⁻¹. Fluids derived from Na-Cl enriched waters formed through evaporation and condensation at shallower depths have As levels of only a few μg L⁻¹. Mixing of Na-Cl waters with shallower meteoric waters results in low to intermediate As concentrations (up to a few mg L⁻¹). After the waters are discharged at the ground surface, As(III) oxidizes to As(V) and attenuation of As concentration can occur due to sorption and co-precipitation processes with iron minerals and organic matter present in sediments. Understanding the mechanisms of As enrichment in geothermal waters and their fate upon mixing with shallower groundwater and surface waters is important for the protection of water resources in Latin America.

  14. Integrating Geologic, Geochemical and Geophysical Data in a Statistical Analysis of Geothermal Resource Probability across the State of Hawaii

    NASA Astrophysics Data System (ADS)

    Lautze, N. C.; Ito, G.; Thomas, D. M.; Hinz, N.; Frazer, L. N.; Waller, D.

    2015-12-01

    Hawaii offers the opportunity to gain knowledge and develop geothermal energy on the only oceanic hotspot in the U.S. As a remote island state, Hawaii is more dependent on imported fossil fuel than any other state in the U.S., and energy prices are 3 to 4 times higher than the national average. The only proven resource, located on Hawaii Island's active Kilauea volcano, is a region of high geologic risk; other regions of probable resource exist but lack adequate assessment. The last comprehensive statewide geothermal assessment occurred in 1983 and found a potential resource on all islands (Hawaii Institute of Geophysics, 1983). Phase 1 of a Department of Energy funded project to assess the probability of geothermal resource potential statewide in Hawaii was recently completed. The execution of this project was divided into three main tasks: (1) compile all historical and current data for Hawaii that is relevant to geothermal resources into a single Geographic Information System (GIS) project; (2) analyze and rank these datasets in terms of their relevance to the three primary properties of a viable geothermal resource: heat (H), fluid (F), and permeability (P); and (3) develop and apply a Bayesian statistical method to incorporate the ranks and produce probability models that map out Hawaii's geothermal resource potential. Here, we summarize the project methodology and present maps that highlight both high prospect areas as well as areas that lack enough data to make an adequate assessment. We suggest a path for future exploration activities in Hawaii, and discuss how this method of analysis can be adapted to other regions and other types of resources. The figure below shows multiple layers of GIS data for Hawaii Island. Color shades indicate crustal density anomalies produced from inversions of gravity (Flinders et al. 2013). Superimposed on this are mapped calderas, rift zones, volcanic cones, and faults (following Sherrod et al., 2007). These features were used

  15. Boise Geothermal Aquifer Study

    SciTech Connect

    Not Available

    1990-01-01

    This report is the final product of a detailed review and quantitative evaluation of existing data for the Boise Front Geothermal Aquifer. Upon review of the many publications, and raw data for the Boise geothermal aquifer, it became clear that adequate data only exists for analysis of current and proposed development within a limited area. This region extends approximately 1.5 miles southeast of the State Capitol to 0.5 mile northwest. Though there are geothermal wells located along the Boise Front outside of this area, the lack of production and water level data preclude any detailed discussions and analysis of their relationship to the central resource. As a result, discussion will concentrate on major users such as the Capitol Mall (CM) Boise Geothermal LTD. (BGL), Veterans Administration (VA) and Boise Warm Springs Water District (BWSWD). The objectives of this study are: Define the inter-relationship of the existing wells and/or portions of the geothermal aquifer; evaluate the effects of current and proposed development on the geothermal aquifer; estimate longevity of the geothermal resource; and make recommendations for an on-going monitoring program. 44 refs., 40 figs., 9 tabs.

  16. Evaluation of a Statewide Science Inservice and Outreach Program: Teacher and Student Outcomes.

    ERIC Educational Resources Information Center

    Lott, Kimberly H.

    2003-01-01

    Evaluates the Alabama Science in Motion (ASIM) program, which is a statewide program that addresses the problems Alabama science teachers must overcome in order to teach secondary science. (Contains 26 references.) (Author/YDS)

  17. 78 FR 50075 - Statewide Communication Interoperability Plan Template and Annual Progress Report

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-16

    ... SECURITY Statewide Communication Interoperability Plan Template and Annual Progress Report AGENCY: National... Programs Directorate (NPPD), Office of Cybersecurity and Communications (CS&C), Office of Emergency Communications (OEC), will submit the following Information Collection Request to the Office of Management...

  18. Patterns of Statewide Test Participation for Students with Significant Cognitive Disabilities

    ERIC Educational Resources Information Center

    Saven, Jessica L.; Anderson, Daniel; Nese, Joseph F. T.; Farley, Dan; Tindal, Gerald

    2016-01-01

    Students with significant cognitive disabilities are eligible to participate in two statewide testing options for accountability: alternate assessments or general assessments with appropriate accommodations. Participation guidelines are generally quite vague, leading to students "switching" test participation between years. In this…

  19. Effects of Road Salt on Connecticut's Groundwater: A Statewide Centennial Perspective.

    PubMed

    Cassanelli, James P; Robbins, Gary A

    2013-01-01

    This study examined the extent to which development and road salting has affected Connecticut's groundwater. We gathered water quality data from different time periods between 1894 and the present and analyzed the data using maps generated with ESRI ArcGIS. Historical reports illustrate a statewide baseline trend of decreasing chloride concentration northward across the State (average, 2 ppm). Since then, statewide chloride concentrations in ground water have increased by more than an order of magnitude on average. Analysis indicates spatial correlation between chloride impacts and major roadways. Furthermore, increases in statewide chloride concentration parallel increases in road salt application. Projected trends suggest that statewide baseline concentrations will increase by an amount equal to five times background levels between the present and the year 2030. The analytical process outlined herein can be readily applied to any region to investigate salt impacts on large spatial and temporal scales.

  20. Navy Geothermal Plan

    SciTech Connect

    Not Available

    1984-12-01

    Domestic geothermal resources with the potential for decreasing fossil fuel use and energy cost exist at a significant number of Navy facilities. The Geothermal Plan is part of the Navy Energy R and D Program that will evaluate Navy sites and provide a technical, economic, and environmental base for subsequent resource use. One purpose of the program will be to provide for the transition of R and D funded exploratory efforts into the resource development phase. Individual Navy geothermal site projects are described as well as the organizational structure and Navy decision network. 2 figs.

  1. Geothermal aquaculture in Nevada

    SciTech Connect

    Birk, S.

    1987-06-01

    Work in geothermal aquaculture and vertically integrated agriculture is undertaken by Washoe Aquaculture Limited, Gourmet Prawnz Inc., General Managing Partners. This approach to agriculture is researched at the integrated Prototype Aquaculture Facility (IPAF) at Hobo Hot Springs, Nevada. The principal objective at the IPAF is to use geothermal aquifers to commercially raise food, plants, and ornamental fish. At the IPAF, the feasibility of geothermal aquaculture has been demonstrated. The company has implemented many demonstration projects, including the cultivation of freshwater prawns, native baitfish, exotic tropical species, and commercially important aquatic plants.

  2. New Zealand geothermal: Wairakei -- 40 years

    SciTech Connect

    1998-09-01

    This quarterly bulletin highlights the geothermal developments in New Zealand with the following articles: A brief history of the Wairakei geothermal power project; Geothermal resources in New Zealand -- An overview; Domestic and commercial heating and bathing -- Rotorua area; Kawerau geothermal development: A case study; Timber drying at Kawerau; Geothermal greenhouses at Kawerau; Drying of fibrous crops using geothermal steam and hot water at the Taupo Lucerne Company; Prawn Park -- Taupo, New Zealand; Geothermal orchids; Miranda hot springs; and Geothermal pipeline.

  3. Geothermal Orientation Handbook

    SciTech Connect

    1984-07-01

    This is a useful overview of the Department of Energy's outlook on geothermal energy development in the U.S. as of late 1983. For example, Exhibit 4 shows how electric utility planners' estimates of likely amounts of geothermal power on line for 1990 and 2000 first increased and then declined over time as they were surveyed in 1977 through 1983 (date are from the EPRI Survey). Additions to direct heat uses in 1979 through 1981 are in Exhibit 7. A Table (not numbered) at the back of the report "Historical Development of Geothermal Power ..." shows world installed geothermal capacity by nation at decadal intervals from 1950 to 1980, and the first year of power production for each country. (DJE 2005)

  4. Geothermal Energy: Current abstracts

    SciTech Connect

    Ringe, A.C.

    1988-02-01

    This bulletin announces the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production. (ACR)

  5. Geothermal District Heating Economics

    1995-07-12

    GEOCITY is a large-scale simulation model which combines both engineering and economic submodels to systematically calculate the cost of geothermal district heating systems for space heating, hot-water heating, and process heating based upon hydrothermal geothermal resources. The GEOCITY program simulates the entire production, distribution, and waste disposal process for geothermal district heating systems, but does not include the cost of radiators, convectors, or other in-house heating systems. GEOCITY calculates the cost of district heating basedmore » on the climate, population, and heat demand of the district; characteristics of the geothermal resource and distance from the distribution center; well-drilling costs; design of the distribution system; tax rates; and financial conditions.« less

  6. National Geothermal Academy. Geo-Heat Center Quarterly Bulletin, Vol. 31 No. 2 (Complete Bulletin). A Quarterly Progress and Development Report on the Direct Utilization of Geothermal Resources

    SciTech Connect

    Boyd, Tonya; Maddi, Phillip

    2012-08-01

    The National Geothermal Academy (NGA) is an intensive 8-week overview of the different aspects involved in developing a geothermal project, hosted at University of Nevada, Reno. The class of 2012 was the second graduating class from the academy and included 21 students from nine states, as well as Saudi Arabia, Dominica, India, Trinidad, Mexico. The class consisted of people from a wide range of scholastic abilities from students pursuing a Bachelor’s or Master’s degrees, to entrepreneurs and professionals looking to improve their knowledge in the geothermal field. Students earned 6 credits, either undergraduate or graduate, in engineering or geology. Overall, the students of the NGA, although having diverse backgrounds in engineering, geology, finance, and other sciences, came together with a common passion to learn more about geothermal.

  7. Geothermal Energy Retrofit

    SciTech Connect

    Bachman, Gary

    2015-07-28

    The Cleary University Geothermal Energy Retrofit project involved: 1. A thermal conductivity test; 2. Assessment of alternative horizontal and vertical ground heat exchanger options; 3. System design; 4. Asphalt was stripped from adjacent parking areas and a vertical geothermal ground heat exchanger system installed; 5. the ground heat exchanger was connected to building; 6. a system including 18 heat pumps, control systems, a manifold and pumps, piping for fluid transfer and ductwork for conditioned air were installed throughout the building.

  8. Geothermal reservoir simulation

    NASA Technical Reports Server (NTRS)

    Mercer, J. W., Jr.; Faust, C.; Pinder, G. F.

    1974-01-01

    The prediction of long-term geothermal reservoir performance and the environmental impact of exploiting this resource are two important problems associated with the utilization of geothermal energy for power production. Our research effort addresses these problems through numerical simulation. Computer codes based on the solution of partial-differential equations using finite-element techniques are being prepared to simulate multiphase energy transport, energy transport in fractured porous reservoirs, well bore phenomena, and subsidence.

  9. Geothermal reservoir technology

    SciTech Connect

    Lippmann, M.J.

    1985-09-01

    A status report on Lawrence Berkeley Laboratory's Reservoir Technology projects under DOE's Hydrothermal Research Subprogram is presented. During FY 1985 significant accomplishments were made in developing and evaluating methods for (1) describing geothermal systems and processes; (2) predicting reservoir changes; (3) mapping faults and fractures; and (4) field data analysis. In addition, LBL assisted DOE in establishing the research needs of the geothermal industry in the area of Reservoir Technology. 15 refs., 5 figs.

  10. Maternal language and adverse birth outcomes in a statewide analysis.

    PubMed

    Sentell, Tetine; Chang, Ann; Ahn, Hyeong Jun; Miyamura, Jill

    2016-01-01

    Limited English proficiency is associated with disparities across diverse health outcomes. However, evidence regarding adverse birth outcomes across languages is limited, particularly among U.S. Asian and Pacific Islander populations. The study goal was to consider the relationship of maternal language to birth outcomes using statewide hospitalization data. Detailed discharge data from Hawaii childbirth hospitalizations from 2012 (n = 11,419) were compared by maternal language (English language or not) for adverse outcomes using descriptive and multivariable log-binomial regression models, controlling for race/ethnicity, age group, and payer. Ten percent of mothers spoke a language other than English; 93% of these spoke an Asian or Pacific Islander language. In multivariable models, compared to English speakers, non-English speakers had significantly higher risk (adjusted relative risk [ARR]: 2.02; 95% confidence interval [CI]: 1.34-3.04) of obstetric trauma in vaginal deliveries without instrumentation. Some significant variation was seen by language for other birth outcomes, including an increased rate of primary Caesarean sections and vaginal births after Caesarean, among non-English speakers. Non-English speakers had approximately two times higher risk of having an obstetric trauma during a vaginal birth when other factors, including race/ethnicity, were controlled. Non-English speakers also had higher rates of potentially high-risk deliveries.

  11. Pediatric Secondary Overtriage in a Statewide Trauma System.

    PubMed

    Leung, Alexander; Bonasso, Patrick; Lynch, Kevin; Long, Dustin; Vaughan, Richard; Wilson, Alison; Con, Jorge

    2016-09-01

    Secondary overtriage is a term that describes patients who are discharged home shortly after being transferred, an indication that transfer and hospitalization were unnecessary. The study goal was to identify factors associated with secondary triage. A statewide trauma registry was used to identify trauma patients aged less than 18 years during a 6-year period (2007-2012) who were discharged within 48 hours from arrival and did not undergo a surgical procedure. We compared those that were treated at initial facility and those transferred to a second facility using clinical indices including patterns of injury pattern using multivariate logistic regression. Of the 4441 patients who fit our inclusion criteria, 801 (18%) were transferred. Younger age groups were more likely to be transferred. Factors associated with being transferred included head, spinal, and facial injuries, and patient arrival during the nighttime work shifts. In conclusion, young patients who have signs of possible neurological or spinal injuries and those who arrive during nondaytime shifts during the workday are more likely to be transferred to another trauma center. These may reflect the comfort level and resources of the local facility.

  12. Nineteenth workshop on geothermal reservoir engineering: Proceedings

    SciTech Connect

    Ramey, H.J. Jr.; Horne, R.J.; Kruger, P.; Miller, F.G.; Brigham, W.E.; Cook, J.W.

    1994-01-20

    PREFACE The Nineteenth Workshop on Geothermal Reservoir Engineering was held at Stanford University on January 18-20, 1994. This workshop opened on a sad note because of the death of Prof. Henry J. Ramey, Jr. on November 19, 1993. Hank had been fighting leukemia for a long time and finally lost the battle. Many of the workshop participants were present for the celebration of his life on January 21 at Stanford's Memorial Church. Hank was one of the founders of the Stanford Geothermal Program and the Geothermal Reservoir Engineering Workshop. His energy, kindness, quick wit, and knowledge will long be missed at future workshops. Following the Preface we have included a copy of the Memorial Resolution passed by the Stanford University Senate. There were one hundred and four registered participants. Participants were from ten foreign countries: Costa Rica, England, Iceland, Italy, Japan, Kenya, Mexico, New Zealand, Philippines and Turkey. Workshop papers described the performance of fourteen geothermal fields outside the United States. Roland N. Home opened the meeting and welcomed the visitors to the campus. The key note speaker was J.E. ''Ted'' Mock who gave a presentation about the future of geothermal development. The banquet speaker was Jesus Rivera and he spoke about Energy Sources of Central American Countries. Forty two papers were presented at the Workshop. Technical papers were organized in twelve sessions concerning: sciences, injection, production, modeling, and adsorption. Session chairmen are an important part of the workshop and our thanks go to: John Counsil, Mark Walters, Dave Duchane, David Faulder, Gudmundur Bodvarsson, Jim Lovekin, Joel Renner, and Iraj Ershaghi. The Workshop was organized by the Stanford Geothermal Program faculty, staff, and graduate students. We wish to thank Pat Ota, Ted Sumida, and Terri A. Ramey who also produces the Proceedings Volumes for publication. We owe a great deal of thanks to our students who operate audiovisual

  13. geothermal salinity control system

    SciTech Connect

    McCabe, B.C.; Zajac, E.

    1985-01-08

    Highly saline geothermal brine, such as that produced from the lower geothermal reserve of the Salton Sea geothermal field, is diluted with non-geothermal water of much lower salinity in a mixing zone proximate the high temperature end of a geothermal power plant, and preferably down in the production well just above the production zone, so as to reduce the chloride salt content of the production brine to a level that is at or below the saturated level at reinjection temperatures, thereby preventing any material chloride salt scaling at any location in the plant through reinjection. The permanent cemented-in production casing in the well is protected against the corrosive effects of the hot production brine by means of a removable production liner that is generally coextensive with the casing. Said mixing zone is provided in the lower portion of the liner, and the liner establishes an annulus between it and the casing through which said non-geothermal water flows downwardly to the mixing zone so as to exclude the production brine from contact with the casing.

  14. A comparison of cervical histopathology variability using whole slide digitized images versus glass slides: experience with a statewide registry.

    PubMed

    Gage, Julia C; Joste, Nancy; Ronnett, Brigette M; Stoler, Mark; Hunt, William C; Schiffman, Mark; Wheeler, Cosette M

    2013-11-01

    Whole slide imaging is increasingly used for primary and consultative diagnoses, teaching, telepathology, slide sharing, and archiving. We compared pathologist evaluations of glass slides and corresponding digitized images within the context of a statewide surveillance effort. Cervical specimens collected by the New Mexico HPV Pap Registry research program targeted cases diagnosed between 2006 and 2010. Two samples of 250 slides each were digitized with the ScanScope XT (Aperio, Vista, CA) microscope and reviewed with Aperio ImageScope reader. (1) A "random set" had a distribution of community diagnoses: 70% from cases of cervical intraepithelial neoplasia grade 2 or higher, 20% from cases of cervical intraepithelial neoplasia grade 1 and 10% from negative cases. (2) A "discrepant set" was represented by difficult cases where 2 study pathologists initially disagreed. Within the regular workflow of the New Mexico HPV Pap Registry, 3 pathologists read the slides 2 to 3 times each without knowledge of clinical history, previous readings or sampling scheme. Pathologists also read each corresponding image twice. For within- and between-reader comparisons we calculated unweighted κ statistics and asymmetry χ(2) tests. Across all comparisons, slides and images yielded similar results. For the random set, almost all within-reader and between-reader Kappa values ranged between 0.7 and 0.8 and 0.6 and 0.7, respectively. For the discrepant set, most within- and between-reader κ values were 0.4 to 0.6. As cervical intraepithelial neoplasia diagnostic terminology changes, pathologists may need to re-read histopathology slides to compare disease trends over time, eg, before/after introduction of human papillomavirus vaccination. Diagnosis of cervical intraepithelial neoplasia differed little between slides and corresponding digitized images. PMID:24075599

  15. Geothermal resources of rifts: A comparison of the rio grande rift and the salton trough

    NASA Astrophysics Data System (ADS)

    Swanberg, Chandler A.

    1983-05-01

    The Rio Grande Rift and the Salton Trough are the best developed rift systems in the United States and both share many features common to rifts in general, including geothermal resources. These two rifts have different tectonic and magmatic histories, however, and these differences are reflected in the nature of their geothermal resources. The Salton Trough is a well developed and successful rift. It is the landward extension of the Gulf of California spreading center, which has separated Baja, California, from the remainder of Mexico. Quaternary silicic magmatization has occurred and several of the geothermal resources are associated with recent rhyolitic intrusions. Such resources tend to be high temperature (> 200°C). Greenschist facies metamorphism has been observed in several of the geothermal wells. Localized upper crustal melting is a distinct possibility and there is increasing speculation that very high temperature (> 300°C) geothermal fluids may underlie a large portion of the central trough at depths in excess of 4 km. Low temperature geothermal resources associated with shallow hydrothermal convection are less common and tend to be located on the flanks of the trough or in the Coachella Valley to the north of the zone of active rifting. In contrast, the Rio Grande Rift is less well developed. Recent volcanism consists primarily of mantle-derived basalts, which have not had sufficient residence time within the crust to generate significant crustal melting. The geothermal resources within the Rio Grande Rift do not correlate well with these young basalts. Rather, the quantity of geothermal resources are low temperature (< 100°C) and result from forced hydrothermal convection which discharges at constrictions within or at the end of the major sedimentary basins. High temperature resources are less common and the only discovered example is the Valles Caldera of northern New Mexico ( T = 250-300°C). The deep interiors of the sedimentary basins of the Rio

  16. A Prototype System for a Computer-Based Statewide Film Library Network: A Model for Operation. Statewide Film Library Network: System-1 Specifications - Files.

    ERIC Educational Resources Information Center

    Sullivan, Todd

    Using an IBM System/360 Model 50 computer, the New York Statewide Film Library Network schedules film use, reports on materials handling and statistics, and provides for interlibrary loan of films. Communications between the film libraries and the computer are maintained by Teletype model 33 ASR Teletypewriter terminals operating on TWX…

  17. A Prototype System for a Computer-Based Statewide Film Library Network: A Model for Operation. Number 3, Statewide Film Library Network: System Write-Up.

    ERIC Educational Resources Information Center

    Auricchio, Dominick

    An overview of materials scheduling, this write-up outlines system components, standardization, costs, limitations, and expansion capabilities of the New York Statewide Film Library Network. Interacting components include research staff; materials libraries; hardware; input/output (operation modes, input format conventions, transaction codes);…

  18. Why geothermal energy? Geothermal utilization in the Philippines

    SciTech Connect

    Gazo, F.M.

    1997-12-31

    This paper discusses the advantages of choosing geothermal energy as a resource option in the Philippine energy program. The government mandates the full-scale development of geothermal energy resources to meet increased power demand brought by rapid industrialization and economic growth, and to reduce fossil fuel importation. It also aims to realize these additional geothermal capacities by tapping private sector investments in the exploration, development, exploitation, construction, operation and management of various geothermal areas in the country.

  19. Workshop on CSDP data needs for the BACA geothermal field: a summary

    SciTech Connect

    Mangold, D.C.; Tsang, C.F.

    1984-06-01

    These workshop summaries discuss the data needs of the Continental Scientific Drilling Program (CSDP) community and provide an introduction to the available geological, geophysical, geochemical and reservoir engineering data of the Baca geothermal field, Valles Caldera, New Mexico. Individual abstracts have been prepared for the presentations. (ACR)

  20. Geothermal energy: 1992 program overview

    SciTech Connect

    Not Available

    1993-04-01

    Geothermal energy is described in general terms with drawings illustrating the technology. A map of known and potential geothermal resources in the US is included. The 1992 program activities are described briefly. (MHR)

  1. Geothermal resources of Utah, 1980

    SciTech Connect

    Not Available

    1980-01-01

    This map shows heat flow, Known Geothermal Resources Areas, thermal springs and wells, and areas of low-temperature geothermal waters. Also shown are Indian reservations, military reservation, national or state forests, and parks, wildlife refuges, wilderness areas, etc. (MHR)

  2. South Dakota Geothermal Energy Handbook

    SciTech Connect

    Not Available

    1980-06-01

    The sources of geothermal fluids in South Dakota are described and some of the problems that exist in utilization and materials selection are detailed. Methods of heat extraction and the environmental concerns that accompany geothermal fluid development are briefly described. Governmental rules, regulations and legislation are explained. The time and steps necessary to bring about the development of the geothermal resources are explained in detail. Some of the federal incentives that encourage the use of geothermal energy are summarized.

  3. Accelerating Geothermal Research (Fact Sheet)

    SciTech Connect

    Not Available

    2014-05-01

    Geothermal research at the National Renewable Energy Laboratory (NREL) is advancing geothermal technologies to increase renewable power production. Continuous and not dependent on weather, the geothermal resource has the potential to jump to more than 500 gigawatts in electricity production, which is equivalent to roughly half of the current U.S. capacity. Enhanced geothermal systems have a broad regional distribution in the United States, allowing the potential for development in many locations across the country.

  4. Seismic Activity at tres Virgenes Volcanic and Geothermal Field

    NASA Astrophysics Data System (ADS)

    Antayhua, Y. T.; Lermo, J.; Quintanar, L.; Campos-Enriquez, J. O.

    2013-05-01

    The volcanic and geothermal field Tres Virgenes is in the NE portion of Baja California Sur State, Mexico, between -112°20'and -112°40' longitudes, and 27°25' to 27°36' latitudes. Since 2003 Power Federal Commission and the Engineering Institute of the National Autonomous University of Mexico (UNAM) initiated a seismic monitoring program. The seismograph network installed inside and around the geothermal field consisted, at the beginning, of Kinemetrics K2 accelerometers; since 2009 the network is composed by Guralp CMG-6TD broadband seismometers. The seismic data used in this study covered the period from September 2003 - November 2011. We relocated 118 earthquakes with epicenter in the zone of study recorded in most of the seismic stations. The events analysed have shallow depths (≤10 km), coda Magnitude Mc≤2.4, with epicentral and hypocentral location errors <2 km. These events concentrated mainly below Tres Virgenes volcanoes, and the geothermal explotation zone where there is a system NW-SE, N-S and W-E of extensional faults. Also we obtained focal mechanisms for 38 events using the Focmec, Hash, and FPFIT methods. The results show normal mechanisms which correlate with La Virgen, El Azufre, El Cimarron and Bonfil fault systems, whereas inverse and strike-slip solutions correlate with Las Viboras fault. Additionally, the Qc value was obtained for 118 events. This value was calculated using the Single Back Scattering model, taking the coda-waves train with window lengths of 5 sec. Seismograms were filtered at 4 frequency bands centered at 2, 4, 8 and 16 Hz respectively. The estimates of Qc vary from 62 at 2 Hz, up to 220 at 16 Hz. The frequency-Qc relationship obtained is Qc=40±2f(0.62±0.02), representing the average attenuation characteristics of seismic waves at Tres Virgenes volcanic and geothermal field. This value correlated with those observed at other geothermal and volcanic fields.

  5. Geothermal Energy - An Emerging Resource

    SciTech Connect

    Berg, John R.

    1987-01-20

    Address on the Department of Energy's overall energy policy, the role of alternative energy sources within the policy framework, and expectations for geothermal energy. Commendation of the industry's decision to pursue the longer-term field effort while demand for geothermal energy is low, and thus prepare for a substantial geothermal contribution to the nation's energy security.

  6. Geothermal pipeline - progress and development update, geothermal progress monitor

    SciTech Connect

    1996-08-01

    This document is a progress and development update and geothermal progress monitor prepared by the Geo-Heat Center at the Oregon Institute of Technology in Klamath Falls, Oregon. Several upcoming meetings in the field of geothermal energy and resource development are announced. Proposed and past geothermal activities within the Glass Mountain Known Geothermal Resource Area are also discussed. As of this date, there has been limited geothermal exploration in this area, however, two projects located in the near vicinity have been proposed within the last two years.

  7. Mexico City

    Atmospheric Science Data Center

    2013-04-18

    ... Two small brighter patches within the hazy area indicate low fog. In the left-hand panel, the city basin appears significantly clearer, but ... very high altitudes, in contrast to the low-lying haze and fog near Mexico City. When the stereo retrieval determines that a location is ...

  8. Mexico's Oxbridge.

    ERIC Educational Resources Information Center

    Haussman, Fay

    1979-01-01

    For 400 years the National Autonomous University of Mexico has remained at the hub of the country's intellectual and political life. The history of the University from the Mayas and the Aztecs, University expansion, upward mobility of students, and student pressure groups and politics are described. (MLW)

  9. New Mexico renewable development study

    SciTech Connect

    Toole, Gasper; Bent, Russell; Ewers, Mary

    2010-09-17

    Since the early 1990s, Los Alamos National Laboratory (LANL) has applied electric grid models and simulation software to problems of national significance. This effort continues with a variety of other projects funded by the Department of Energy (DOE), other federal and state agencies and private companies. Critical to the success of these programs is the ability to integrate regional-scale models of the electric grid, to assess the propagation of grid impacts, and to present interactively the effect of potential mitigating actions required to stabilize the grid. All of these capabilities are applied in this study, to accomplish the following goals and objectives: (1) Develop an AC power flow model representing future conditions within New Mexico's electric grid, using commercial tools accepted by the utility industry; (2) Conduct a 'screening' analysis of options for accelerating potential renewable energy development through the addition of a statewide transmission collector system; (3) Estimate total revenue needed, jobs created (temporary and permanent) plus indirect and direct impacts to the state's economy; (4) Evaluate potential cost allocation methodology; and (5) Issue a project report that will provide information for policy direction by state regulators, project developers, and legislators.

  10. Geothermal Data Collection and Interpretation in the State of Alabama: Early Results from the ARRA Geothermal Energy Initiative

    NASA Astrophysics Data System (ADS)

    Hills, D. J.; Osborne, T. E.; McIntyre, M. R.; Pashin, J. C.

    2011-12-01

    The Geological Survey of Alabama (GSA) is expanding its efforts to collect, develop, maintain, and analyze statewide geothermal data and to make this information widely and easily accessible to the public through the National Geothermal Data System. The online availability of this data will aid in the effective development of geothermal energy applications and reduce the risks associated with the initial stages of geothermal project development. To this end, the GSA is participating in a collaborative project that the Arizona Geological Survey is coordinating in cooperation with the Association of American State Geologists and with the support of the U.S. Department of Energy as part of the American Reinvestment and Recovery Act. Wells drilled for the exploration and production of hydrocarbons are the primary sources of geothermal data in Alabama. To date, more than 1,200 wells in coalbed methane (CBM) fields in the Black Warrior Basin (BWB) have been examined, in addition to over 500 conventional wells in the basin. Pottsville Formation (Pennsylvanian) bottom-hole temperatures (BHTs) range from less than 80°F to more than 140°F in wells reaching total depth between 1,000 and 6,000 feet (ft). Temperature and depth correlate with a coefficient of determination (r2) of 0.72, reflecting significant variation of the modern geothermal gradient. Mapping and statistical analysis confirm that geothermal gradient in the CBM fairway is typically between 6 and 12°F/1,000 ft. BHTs in the conventional wells penetrating the BWB show even greater variation, with temperature and depth correlating with an r2 of only 0.27. This variability owes to numerous factors, including stratigraphy, lithology, thermal conductivity, and geothermal gradient. Indeed, these wells reach total depth between 500 and 12,000 ft in carbonate and siliciclastic formations ranging in age from Cambrian to Mississippian. The Cambrian section is dominated by low conductivity shale, whereas the Ordovician

  11. Geothermal reservoir engineering research at Stanford University. First annual report, October 1, 1980-September 30, 1981

    SciTech Connect

    Brigham, W.E.; Horne, R.N.; Kruger, P.; Miller, F.G.; Ramey, H.J. Jr.

    1981-09-01

    The work on energy extraction experiments concerns the efficiency with which the in-place heat and fluids can be produced. The work on noncondensable gas reservoir engineering covers both the completed and continuing work in these two interrelated research areas: radon emanation from the rock matrix of geothermal reservoirs, and radon and ammonia variations with time and space over geothermal reservoirs. Cooperative research programs with Italy and Mexico are described. The bench-scale experiments and well test analysis section covers both experimental and theoretical studies. The small core model continues to be used for the study of temperature effects on absolute permeability. The unconsolidated sand study was completed at the beginning of this contract period. The Appendices describe some of the Stanford Geothermal program activities that results in interactions with the geothermal community. These occur in the form of SGP Technical Reports, presentations at technical meetings and publications in the open literature.

  12. Water-related constraints to the development of geothermal electric generating stations

    SciTech Connect

    Robertson, R.C.; Shepherd, A.D.; Rosemarin, C.S.; Mayfield, M.W.

    1981-06-01

    The water-related constraints, which may be among the most complex and variable of the issues facing commercialization of geothermal energy, are discussed under three headings: (1) water requirements of geothermal power stations, (2) resource characteristics of the most promising hydrothermal areas and regional and local water supply situations, and (3) legal issues confronting potential users of water at geothermal power plants in the states in which the resource areas are located. A total of 25 geothermal resource areas in California, New Mexico, Oregon, Idaho, Utah, Hawaii, and Alaska were studied. Each had a hydrothermal resource temperature in excess of 150/sup 0/C (300/sup 0/F) and an estimated 30-year potential of greater than 100-MW(e) capacity.

  13. Enhancement of existing geothermal resource utilization by cascading to intensive aquaculture

    SciTech Connect

    Zachritz, W.H. II; Polka, R.; Schoenmackers, R.

    1995-12-04

    Aquaculture, the farming and husbandry of freshwater and marine organisms, is the newest and fastest growing US agricultural sector. In New Mexico, low winter temperatures and limited freshwater sources narrow culture production possibilities; however, it has long been recognized that the state has abundant supplies of both saline and geothermal ground waters. The purpose of this project was to demonstrate the achievable energy savings and value enhancement of the byproduct geothermal energy by cascading fluids for the production of commercial aquaculture species. Specifically the project involved evaluating the heating systems performance in terms of heating budget for the geothermal assist, determine the total quantity of water used for culture and heating, amount of geothermal byproduct heat extracted, and ability of the system to maintain culture water temperatures during critical heating periods of the year. In addition, an analysis was conducted to determine the compatibility of this new system with existing greenhouse heating requirements.

  14. Relationshipe Between Self-potential Anomalies and Hydraulic Flow In A Geothermal System: Application To Cerro-prieto, Baja California

    NASA Astrophysics Data System (ADS)

    Saracco, G.; Revil, A.; Pessel, M.

    The Cerro Prieto geothermal field is located in the alluvial plain of the Mexicali Valley, northern Baja California, Mexico, at about 35 km southeast of the city of Mexicali. The Cerro Prieto geothermal field is one of several high temperature water-dominated geothermal fields within the Salton Trough. We analyze here the self-potential distri- bution at the ground surface in order to determine the pattern of fluid flow in te sub- surface of this geothermal field. Various methods of analysis of self-potential anoma- lies are employed to reach this purpose. We use density probability tomography of monopolar and dipolar electrical sources and an Euler-type analysis. The hydraulic flow pattern found in this geothermal field is in agreement with that detemined from the heat flux inside the structure.

  15. Geothermal hydrogen sulfide removal

    SciTech Connect

    Urban, P.

    1981-04-01

    UOP Sulfox technology successfully removed 500 ppM hydrogen sulfide from simulated mixed phase geothermal waters. The Sulfox process involves air oxidation of hydrogen sulfide using a fixed catalyst bed. The catalyst activity remained stable throughout the life of the program. The product stream composition was selected by controlling pH; low pH favored elemental sulfur, while high pH favored water soluble sulfate and thiosulfate. Operation with liquid water present assured full catalytic activity. Dissolved salts reduced catalyst activity somewhat. Application of Sulfox technology to geothermal waters resulted in a straightforward process. There were no requirements for auxiliary processes such as a chemical plant. Application of the process to various types of geothermal waters is discussed and plans for a field test pilot plant and a schedule for commercialization are outlined.

  16. Geothermal reservoir engineering research

    NASA Technical Reports Server (NTRS)

    Ramey, H. J., Jr.; Kruger, P.; Brigham, W. E.; London, A. L.

    1974-01-01

    The Stanford University research program on the study of stimulation and reservoir engineering of geothermal resources commenced as an interdisciplinary program in September, 1972. The broad objectives of this program have been: (1) the development of experimental and computational data to evaluate the optimum performance of fracture-stimulated geothermal reservoirs; (2) the development of a geothermal reservoir model to evaluate important thermophysical, hydrodynamic, and chemical parameters based on fluid-energy-volume balances as part of standard reservoir engineering practice; and (3) the construction of a laboratory model of an explosion-produced chimney to obtain experimental data on the processes of in-place boiling, moving flash fronts, and two-phase flow in porous and fractured hydrothermal reservoirs.

  17. Geothermal Plant Capacity Factors

    SciTech Connect

    Greg Mines; Jay Nathwani; Christopher Richard; Hillary Hanson; Rachel Wood

    2015-01-01

    The capacity factors recently provided by the Energy Information Administration (EIA) indicated this plant performance metric had declined for geothermal power plants since 2008. Though capacity factor is a term commonly used by geothermal stakeholders to express the ability of a plant to produce power, it is a term frequently misunderstood and in some instances incorrectly used. In this paper we discuss how this capacity factor is defined and utilized by the EIA, including discussion on the information that the EIA requests from operations in their 923 and 860 forms that are submitted both monthly and annually by geothermal operators. A discussion is also provided regarding the entities utilizing the information in the EIA reports, and how those entities can misinterpret the data being supplied by the operators. The intent of the paper is to inform the facility operators as the importance of the accuracy of the data that they provide, and the implications of not providing the correct information.

  18. Geothermal energy program summary

    SciTech Connect

    Not Available

    1990-01-01

    The Geothermal Technology Division (GTD) of the US Department of Energy (DOE) is charged with the lead federal role in the research and development (R D) of technologies that will assist industry in economically exploiting the nation's vast geothermal resources. The GTD R D Program represents a comprehensive, balanced approach to establishing all forms of geothermal energy as significant contributors to the nation's energy supply. It is structured both to maintain momentum in the growth of the existing hydrothermal industry and to develop long-term options offering the greatest promise for practical applications. This volume, Volume 2, contains a detailed compilation of each GTD-funded R D activity performed by national laboratories or under contract to industrial, academic, and nonprofit research institutions.

  19. Geothermal materials development activities

    SciTech Connect

    Kukacka, L.E.

    1993-06-01

    This ongoing R&D program is a part of the Core Research Category of the Department of Energy/Geothermal Division initiative to accelerate the utilization of geothermal resources. High risk materials problems that if successfully solved will result in significant reductions in well drilling, fluid transport and energy conversion costs, are emphasized. The project has already developed several advanced materials systems that are being used by the geothermal industry and by Northeastern Electric, Gas and Steam Utilities. Specific topics currently being addressed include lightweight C0{sub 2}-resistant well cements, thermally conductive scale and corrosion resistant liner systems, chemical systems for lost circulation control, elastomer-metal bonding systems, and corrosion mitigation at the Geysers. Efforts to enhance the transfer of the technologies developed in these activities to other sectors of the economy are also underway.

  20. Computers in geothermal energy

    SciTech Connect

    Pettinger, F.E.

    1984-10-01

    This article describes a data base and file management system for the IBM/PC, and gives a general idea of how the Power Base (PB) system might be applied to the running of a typical geothermal business. Requirements for running PB are a monitor, at least 256K, and two double-sided disk drives or a single drive and a hard disk. The relational data base created by PB is organized in filing card type records that are composed of fields. When a file is created, it can be designed according to a company's specific requirements and can allow changes in the layout at any time. Geothermal businesses can use this software package for shipping and client invoice tracking, most billing functions, inventory calculations and mailing data bases. Geothermal project planners might find PB's project tracking aspect useful.

  1. California's geothermal resource potential

    NASA Technical Reports Server (NTRS)

    Leibowitz, L. P.

    1978-01-01

    According to a U.S. Geological Survey estimate, recoverable hydrothermal energy in California may amount to 19,000 MW of electric power for a 30-year period. At present, a geothermal installation in the Geysers region of the state provides 502 MWe of capacity; an additional 1500 MWe of electric generating capacity is scheduled to be in operation in geothermal fields by 1985. In addition to hydrothermal energy sources, hot-igneous and conduction-dominated resources are under investigation for possible development. Land-use conflicts, environmental concerns and lack of risk capital may limit this development.

  2. Geothermal Energy; (USA)

    SciTech Connect

    Raridon, M.H.; Hicks, S.C.

    1991-01-01

    Geothermal Energy (GET) announces on a bimonthly basis the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production. This publication contains the abstracts of DOE reports, journal article, conference papers, patents, theses, and monographs added to the Energy Science and Technology Database (EDB) during the past two months. Also included are US information obtained through acquisition programs or interagency agreements and international information obtained through the International Energy Agency's Energy Technology Data Exchange or government-to-government agreements.

  3. Geothermal hazards - Mercury emission

    NASA Technical Reports Server (NTRS)

    Siegel, S. M.; Siegel, B. Z.

    1975-01-01

    Enthusiasm for intensified geothermal exploration may induce many participants to overlook a long-term potential toxicity hazard possibly associated with the tapping of magmatic steam. The association of high atmospheric Hg levels with geothermal activity has been established both in Hawaii and Iceland, and it has been shown that mercury can be introduced into the atmosphere from fumaroles, hot springs, and magmatic sources. These arguments, extended to thallium, selenium, and other hazardous elements, underscore the need for environmental monitoring in conjunction with the delivery of magmatic steam to the surface.

  4. Geochemical constraints on the distribution of gas hydrates in the Gulf of Mexico

    USGS Publications Warehouse

    Paull, C.K.; Ussler, W.; Lorenson, T.; Winters, W.; Dougherty, J.

    2005-01-01

    Gas hydrates are common within near-seafloor sediments immediately surrounding fluid and gas venting sites on the continental slope of the northern Gulf of Mexico. However, the distribution of gas hydrates within sediments away from the vents is poorly documented, yet critical for gas hydrate assessments. Porewater chloride and sulfate concentrations, hydrocarbon gas compositions, and geothermal gradients obtained during a porewater geochemical survey of the northern Gulf of Mexico suggest that the lack of bottom simulating reflectors in gas-rich areas of the gulf may be the consequence of elevated porewater salinity, geothermal gradients, and microbial gas compositions in sediments away from fault conduits. ?? Springer-Verlag 2005.

  5. Human Resources in Geothermal Development

    SciTech Connect

    Fridleifsson, I.B.

    1995-01-01

    Some 80 countries are potentially interested in geothermal energy development, and about 50 have quantifiable geothermal utilization at present. Electricity is produced from geothermal in 21 countries (total 38 TWh/a) and direct application is recorded in 35 countries (34 TWh/a). Geothermal electricity production is equally common in industrialized and developing countries, but plays a more important role in the developing countries. Apart from China, direct use is mainly in the industrialized countries and Central and East Europe. There is a surplus of trained geothermal manpower in many industrialized countries. Most of the developing countries as well as Central and East Europe countries still lack trained manpower. The Philippines (PNOC) have demonstrated how a nation can build up a strong geothermal workforce in an exemplary way. Data from Iceland shows how the geothermal manpower needs of a country gradually change from the exploration and field development to monitoring and operations.

  6. 2008 Geothermal Technologies Market Report

    SciTech Connect

    Cross, J.; Freeman, J.

    2009-07-01

    This report describes market-wide trends for the geothermal industry throughout 2008 and the beginning of 2009. It begins with an overview of the U.S. DOE's Geothermal Technology Program's (GTP's) involvement with the geothermal industry and recent investment trends for electric generation technologies. The report next describes the current state of geothermal power generation and activity within the United States, costs associated with development, financing trends, an analysis of the levelized cost of energy (LCOE), and a look at the current policy environment. The report also highlights trends regarding direct use of geothermal energy, including geothermal heat pumps (GHPs). The final sections of the report focus on international perspectives, employment and economic benefits from geothermal energy development, and potential incentives in pending national legislation.

  7. Multidisciplinary research of geothermal modeling

    NASA Astrophysics Data System (ADS)

    -Ing. Ulvi Arslan, Univ., ., Dr. _., Prof.; Heiko Huber, Dipl.-Ing.

    2010-05-01

    KEYWORDS Geothermal sciences, geothermics, research, theory and application, numerical calculation, geothermal modeling, Technical University Darmstadt, Ministry of Economics and Technology (BMWi) INTRODUCTION In times of global warming renewable, green energies are getting more and more important. The development of application of geothermal energy as a part of renewable energies in Germany is a multidisciplinary process of fast growing research and improvements. Geothermal energy is the energy, which is stored below earth's surface. The word geothermal derives from the Greek words geo (earth) and thermos (heat), so geothermal is a synonym to earth heat. Geothermal energy is one of the auspicious renewable energies. In average the temperature increases 3°C every 100 m of depth, which is termed as geothermal gradient. Therefore 99 percent of our planet is hotter than 1.000°C, while 99 percent of that last percent is even hotter than 100°C. Already in a depth of about 1 kilometer temperatures of 35 - 40°C can be achieved. While other renewable energies arise less or more from the sun, geothermal energy sources its heat from the earth's interior, which is caused mostly by radioactive decay of persistent isotopes. This means a possibility of a base-loadable form of energy supply. Especially efficient is the use of deep geothermal energy of high-enthalpie reservoirs, which means a high energy potential in low depths. In Germany no high-enthalpie reservoirs are given. To use the given low-enthalpie potential and to generate geothermal power efficiently inventions and improvements need to be performed. An important part of geothermal progresses is performed by universities with multidisciplinary research of geothermal modeling. Especially in deep geothermal systems numerical calculations are essential for a correct dimensioning of the geothermal system. Therefore German universities and state aided organizations are developing numerical programs for a detailed use of

  8. Empowering High School Students in Scientific Careers: Developing Statewide Partnerships

    NASA Astrophysics Data System (ADS)

    Aguilar, C.; Swartz, D.

    2008-05-01

    Center for Multiscale Modeling of Atmospheric Processes (CMMAP) is a National Science Foundation Science and Technology Center focused on improving the representation of cloud processes in climate models. The Center is divided into three sections including Knowledge Transfer, Research, and Education and Diversity. The Science Education and Diversity mission is to educate and train people with diverse backgrounds in Climate and Earth System Science by enhancing teaching and learning and disseminating science results through multiple media. CMMAP is partnering with two local school districts to host an annual global climate conferences for high school students. The 2008 Colorado Global Climate Conference seeks "To educate students on global and local climate issues and empower them to se their knowledge." The conference is sponsored by CMMAP, The Governor's Energy Office, Poudre School District, Thompson School District, Clif Bar, and Ben and Jerry's Scoop Shop of Fort Collins. The conference seeks to inspire students to pursue future education and careers in science fields. Following an opening welcome from the Governor's Energy Office, Keynote Piers Sellers will discuss his experiences as an atmospheric scientist and NASA astronaut. Students will then attend 3 out of 16 breakout sessions including such sessions as "Hot poems, Cool Paintings, and the treasures of Antiquity of Climate Change", "Mitigation vs Adaptation", "Bigfoot Walks(What Size is our carbon footprint?)" "The Wedges: Reduc ing Carbon Emissions", and "We the People: Climate and Culture of Climate Change" to name a few. Using The Governor's High School Conference on the Environment sponsored by the Wisconsin Center for Environmental Education as a model we are developing statewide partnerships to bring high school students together to look at global climate issues that will impact their future and of which they can be part of the solution through their education and career paths. In addition to

  9. Evaluating RITES, a Statewide Math and Science Partnership Program

    NASA Astrophysics Data System (ADS)

    Murray, D. P.; Caulkins, J. L.; Burns, A. L.; de Oliveira, G.; Dooley, H.; Brand, S.; Veeger, A.

    2013-12-01

    The Rhode Island Technology-Enhanced Science project (RITES) is a NSF-MSP Program that seeks to improve science education by providing professional development to science teachers at the 5th through 12th grade levels. At it's heart, RITES is a complex, multifaceted project that is challenging to evaluate because of the nature of its goal: the development of a large, statewide partnership between higher education and K12 public school districts during a time when science education strategies and leadership are in flux. As a result, these difficulties often require flexibility and creativity regarding evaluation, study design and data collection. In addition, the research agenda of the project often overlaps with the evaluator's agenda, making collaboration and communication a crucial component of the project's success. In it's 5th year, RITES and it's evaluators have developed a large number of instruments, both qualitative and quantitative, to provide direction and feedback on the effectiveness of the project's activities. RITES personnel work closely with evaluators and researchers to obtain a measure of how RITES' 'theory-of-action' affects both student outcomes and teacher practice. Here we discuss measures of teacher and student content gains, student inquiry gains, and teacher implementation surveys. Using content questions based on AAAS and MOSART databases, teachers in the short courses and students in classrooms showed significant normalized learning gains with averages generally above 0.3. Students of RITES-trained teachers also outperformed their non-RITES peers on the inquiry-section of the NECAP test, and The results show, after controlling for race and economic status, a small but statistically significant increase in test scores for RITES students. Technology use in the classroom significantly increased for teachers who were 'expected implementers' where 'expected implementers' are those teachers who implemented RITES as the project was designed. This

  10. FINAL TECHNICAL REPORT FOR FORESTRY BIOFUEL STATEWIDE COLLABORATION CENTER (MICHIGAN)

    SciTech Connect

    LaCourt, Donna M.; Miller, Raymond O.; Shonnard, David R.

    2012-04-24

    A team composed of scientists from Michigan State University (MSU) and Michigan Technological University (MTU) assembled to better understand, document, and improve systems for using forest-based biomass feedstocks in the production of energy products within Michigan. Work was funded by a grant (DE-EE-0000280) from the U.S. Department of Energy (DOE) and was administered by the Michigan Economic Development Corporation (MEDC). The goal of the project was to improve the forest feedstock supply infrastructure to sustainably provide woody biomass for biofuel production in Michigan over the long-term. Work was divided into four broad areas with associated objectives: • TASK A: Develop a Forest-Based Biomass Assessment for Michigan – Define forest-based feedstock inventory, availability, and the potential of forest-based feedstock to support state and federal renewable energy goals while maintaining current uses. • TASK B: Improve Harvesting, Processing and Transportation Systems – Identify and develop cost, energy, and carbon efficient harvesting, processing and transportation systems. • TASK C: Improve Forest Feedstock Productivity and Sustainability – Identify and develop sustainable feedstock production systems through the establishment and monitoring of a statewide network of field trials in forests and energy plantations. • TASK D: Engage Stakeholders – Increase understanding of forest biomass production systems for biofuels by a broad range of stakeholders. The goal and objectives of this research and development project were fulfilled with key model deliverables including: 1) The Forest Biomass Inventory System (Sub-task A1) of feedstock inventory and availability and, 2) The Supply Chain Model (Sub-task B2). Both models are vital to Michigan’s forest biomass industry and support forecasting delivered cost, as well as carbon and energy balance. All of these elements are important to facilitate investor, operational and policy decisions. All

  11. 76 FR 51054 - Notice of Utah's Resource Advisory Council (RAC) Conference Call Meetings on the Statewide Travel...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-17

    ... the Statewide Travel and Transportation Management Planning Policy AGENCY: Bureau of Land Management... Utah RAC Subgroup on the Statewide Travel and Transportation Management Planning Policy will host a... a variety of planning and management issues associated with public land management in Utah....

  12. 34 CFR 364.25 - What are the requirements for a statewide network of centers for independent living?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... (c) of the Act and subparts F and G of 34 CFR part 366. (b) The design required by paragraph (a) of... 34 Education 2 2011-07-01 2010-07-01 true What are the requirements for a statewide network of... PROVISIONS What Are the State Plan Requirements? § 364.25 What are the requirements for a statewide...

  13. Report to the Higher Education Policy Commission. West Virginia Higher Education Facilities Information System Statewide Institution Report.

    ERIC Educational Resources Information Center

    West Virginia Higher Education Policy Commission, 2004

    2004-01-01

    The West Virginia Higher Education Facilities Information System was formed as a method for instituting statewide standardization of space use and classification; to serve as a vehicle for statewide data acquisition; and to provide statistical data that contributes to detailed institutional planning analysis. The result thus far is the production…

  14. A Guide to Effective Statewide Laws/Policies: Preventing Discrimination against LGBT Students in K-12 Schools.

    ERIC Educational Resources Information Center

    Lambda Legal Defense and Education Fund, New York, NY.

    This document presents guidance for stopping discrimination, harassment, and violence against lesbian, gay, bisexual, and transgender (LGBT) students in schools. Section 1, "Lambda Legal Defense and Education Fund on the Legal Considerations for Creating and Changing Statewide Laws and Policies," discusses the various types of statewide laws and…

  15. 34 CFR 364.25 - What are the requirements for a statewide network of centers for independent living?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... (c) of the Act and subparts F and G of 34 CFR part 366. (b) The design required by paragraph (a) of... 34 Education 2 2010-07-01 2010-07-01 false What are the requirements for a statewide network of... PROVISIONS What Are the State Plan Requirements? § 364.25 What are the requirements for a statewide...

  16. Comparability of Semester and Exit Exam Grades: Long-Term Effect of the Implementation of State-Wide Exit Exams

    ERIC Educational Resources Information Center

    Maag Merki, Katharina; Holmeier, Monika

    2015-01-01

    A goal in many countries is to institute state-wide exams to base student assessment more firmly on norms for all classes. This raises the question as to the extent to which greater standardization of grading practice can be reached by implementing state-wide exit exams. Since there is a lack of longitudinal studies, we analyzed the effect of the…

  17. An Overview and Guide to the Use of the Statewide Measures Inventory. Technical Report 48B. Field Review Edition.

    ERIC Educational Resources Information Center

    Wing, Paul; McLaughlin, James N.

    The Statewide Measures Inventory is essentially a list of items of information, along with concise definitions and other information of interest relevant to statewide postsecondary education planning and management. It has been designed primarily for use by state level postsecondary education planners and decisionmakers. The primary objective of…

  18. The Cornell Cooperative Extension Statewide Data Collection System: An Online Data Collection Tool for Parent Education Programs

    ERIC Educational Resources Information Center

    Kopko, Kimberly; Dunifon, Rachel

    2012-01-01

    The Statewide Data Collection System for Parent Education Programs is an online tool for collecting statewide data on Cornell Cooperative Extension (CCE) parenting education programs. The process of the development and use of this data collection tool are provided as a guide to Extension systems. Results for data entered between March 2009 and…

  19. 76 FR 6148 - Notice of Adjustment of Statewide Per Capita Indicator for Recommending a Cost Share Adjustment

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-03

    ... SECURITY Federal Emergency Management Agency Notice of Adjustment of Statewide Per Capita Indicator for...: FEMA gives notice that the statewide per capita indicator for recommending cost share adjustments for... declared on January 1, 2011, through December 31, 2011, the qualifying indicator is $127 per capita...

  20. 75 FR 4578 - Notice of Adjustment of Statewide Per Capita Threshold for Recommending a Cost Share Adjustment

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-28

    ... SECURITY Federal Emergency Management Agency Notice of Adjustment of Statewide Per Capita Threshold for...: FEMA gives notice that the statewide per capita threshold for recommending cost share adjustments for... declared on January 1, 2010, through December 31, 2010, the qualifying threshold is $125 per capita...

  1. Geohydrologic data from the Jemez Mountains and vicinity, north-central New Mexico

    USGS Publications Warehouse

    Trainer, Frank W.

    1978-01-01

    The Jemez Mountains volcanic region, on the west margin of the Rio Grande rift in north-central New Mexico, is the site of studies for power development from geothermal heat. This report summarizes geohydrologic data to provide background information relative to the geothermal exploration and to investigate the usefulness of hydrology in assessment of the geothermal resource. Eleven tables present chemical, temperature, discharge , and other data for springs, wells, and streams. Accompanying figures show locations of the data points and present temperature profiles and geophysical logs for selected wells. (Woodard-USGS)

  2. Analysis of Production Decline in Geothermal Reservoirs

    SciTech Connect

    Byrns, R.

    1980-09-01

    Data and analysis methods were gathered from the petroleum, geothermal, and hydrological literature. The data sets examined include: Wairakei, New Zealand -141 wells; Cerro Prieto, Mexico - 18 wells; The Geysers, USA - 27 wells; Larderello, Italy - 9 wells and groups; Matsukawa and Otake, Japan - 8 wells; and Olkaria, Kenya - 1 well. The analysis methods tested were; Arps's equations, Fetkovich type curves, Slider's method for Arps, Gentry's method for Arps, Gentry's and McCray's method, other type curves, P/z vs. Q method, Coats' influence function method, and Bodvarsson's Linearized Free Surface Green's Function method. The conclusions are: (1) The exponential equation fit is satisfactory for geothermal data. (2) The hyperbolic equation should be used only if the data fit well on a hyperbolic type curve. (3) The type curve methods are useful if the data are not too scattered. They work well for vapor dominated systems and poorly for liquid dominated systems. (4) Coats' influence function method can be used even with very scattered data. (5) Bodvarsson's method is still experimental but it shows much promise as a useful tool.

  3. Reinjection into geothermal reservoirs

    SciTech Connect

    Bodvarsson, G.S.; Stefansson, V.

    1987-08-01

    Reinjection of geothermal wastewater is practiced as a means of disposal and for reservoir pressure support. Various aspects of reinjection are discussed, both in terms of theoretical studies as well as specific field examples. The discussion focuses on the major effects of reinjection, including pressure maintenance and chemical and thermal effects. (ACR)

  4. Geothermal waste treatment biotechnology

    SciTech Connect

    Premuzic, E.T.; Lin, M.S.; Jin, J.Z.; Hamilton, K.

    1997-01-01

    Studies at the Brookhaven National Laboratory (BNL) have led to the development of a technically and economically feasible, as well as environmentally acceptable, biochemical process for detoxification of geothermal residues. For this process, selected microorganisms that live in extreme environments have served as models for the new biotechnology. Assuming a 2,500-kg/h sludge production rate, the new technology is capable of a better than 80% removal rate of toxic metals, usually in less than a 25-hour period. The process itself depends on a number of flexible parameters, allowing this technology to be tailored to specific needs of different geothermal producing regimes, such as those found in the Salton Sea and the Geysers area of California. Thus geothermal residual sludges and brines can be processed to remove only a few metals, such as arsenic and mercury, or many metals, ranging from valuable metals such as chromium, gold, and silver to radionuclides, such as radium. In some cases, combined metal removal and metal recovery processes may be cost efficient and therefore advantageous. The emerging biotechnology for the treatment of geothermal energy production wastes is versatile and offers a number of application options, which are discussed in the paper.

  5. Geothermal energy conversion facility

    SciTech Connect

    Kutscher, C.F.

    1997-12-31

    With the termination of favorable electricity generation pricing policies, the geothermal industry is exploring ways to improve the efficiency of existing plants and make them more cost-competitive with natural gas. The Geothermal Energy Conversion Facility (GECF) at NREL will allow researchers to study various means for increasing the thermodynamic efficiency of binary cycle geothermal plants. This work has received considerable support from the US geothermal industry and will be done in collaboration with industry members and utilities. The GECF is being constructed on NREL property at the top of South Table Mountain in Golden, Colorado. As shown in Figure 1, it consists of an electrically heated hot water loop that provides heating to a heater/vaporizer in which the working fluid vaporizes at supercritical or subcritical pressures as high as 700 psia. Both an air-cooled and water-cooled condenser will be available for condensing the working fluid. In order to minimize construction costs, available equipment from the similar INEL Heat Cycle Research Facility is being utilized.

  6. Geothermal Grows Up

    ERIC Educational Resources Information Center

    Johnson, William C.; Kraemer, Steven; Ormond, Paul

    2011-01-01

    Self-declared energy and carbon reduction goals on the part of progressive colleges and universities have driven ground source geothermal space heating and cooling systems into rapid evolution, as part of long-term climate action planning efforts. The period of single-building or single-well solutions is quickly being eclipsed by highly engineered…

  7. Simulation of geothermal subsidence

    SciTech Connect

    Miller, I.; Dershowitz, W.; Jones, K.; Myer, L.; Roman, K.; Schauer, M.

    1980-03-01

    The results of an assessment of existing mathematical models for subsidence simulation and prediction are summarized. The following subjects are discussed: the prediction process, physical processes of geothermal subsidence, computational models for reservoir flow, computational models for deformation, proficiency assessment, and real and idealized case studies. (MHR)

  8. Geothermal Systems for School.

    ERIC Educational Resources Information Center

    Dinse, David H.

    1998-01-01

    Describes an award-winning school heating and cooling system in which two energy-efficient technologies, variable-flow pumping and geothermal heat pumps, were combined. The basic system schematic and annual energy use and cost savings statistics are provided. (GR)

  9. Geothermal industry assessment

    SciTech Connect

    Not Available

    1980-07-01

    An assessment of the geothermal industry is presented, focusing on industry structure, corporate activities and strategies, and detailed analysis of the technological, economic, financial, and institutional issues important to government policy formulation. The study is based principally on confidential interviews with executives of 75 companies active in the field. (MHR)

  10. Energy 101: Geothermal Energy

    SciTech Connect

    2014-05-27

    See how we can generate clean, renewable energy from hot water sources deep beneath the Earth's surface. The video highlights the basic principles at work in geothermal energy production, and illustrates three different ways the Earth's heat can be converted into electricity.

  11. Energy 101: Geothermal Energy

    ScienceCinema

    None

    2016-07-12

    See how we can generate clean, renewable energy from hot water sources deep beneath the Earth's surface. The video highlights the basic principles at work in geothermal energy production, and illustrates three different ways the Earth's heat can be converted into electricity.

  12. Modeling Studies of Geothermal Systems with a Free Water Surface

    SciTech Connect

    Bodvarsson, Gudmundur S.; Pruess, K.

    1983-12-15

    Numerical simulators developed for geothermal reservoir engineering applications generally only consider systems which are saturated with liquid water and/or steam. However, most geothermal fields are in hydraulic communicatino with shallow ground water aquifers having free surface (water level), so that production or injection operations will cause movement of the surface, and of the air in the pore spaces above the water level. In some geothermal fields the water level is located hundreds of meters below the surface (e.g. Olkaria, Kenya; Bjornsson, 1978), so that an extensive so that an extensive unsaturated zone is present. In other the caprock may be very leaky or nonexistent [e.g., Klamath Falls, oregon (Sammel, 1976)]; Cerro Prieto, Mexico; (Grant et al., 1984) in which case ther eis good hydraulic communication between the geothermal reservoir and the shallow unconfined aquifers. Thus, there is a need to explore the effect of shallow free-surface aquifers on reservoir behavior during production or injection operations. In a free-surface aquifer the water table moves depending upon the rate of recharge or discharge. This results in a high overall storativity; typically two orders of magnitude higher than that of compressed liquid systems, but one or two orders of magnitude lower than that for liquid-steam reservoirs. As a consequence, various data analysis methods developed for compressed liquid aquifers (such as conventional well test analysis methods) are not applicable to aquifer with a free surface.

  13. Geothermal Energy Development in China

    SciTech Connect

    Kuide, Xin; Qilong, Yang

    1983-12-15

    China's geothermal resources are mainly of low - medium temperature. More than 30 geothermal areas have been or are being explorated. According to the geology, economy and technology of geothermal energy development main efforts are concentrated in some places with better conditions and can be exploited effectively in the near future, such as low temperature geothermal fields in Beijing and Tianjin, Yangbajain and Dengchong high temperature geothermal fields respectively in Tibet and Ynnan province. In Beijing and Tianjin the geothermal water is used for space heating, bathing, medical treatment, greenhouse, raising tropical fish, industry and so on. In Beijing now more than 200 thousand sq. m. of indoor floor is being heated with geothermal water and about 50 thousand persons per day use it to take bath. In future, the low temperature geothermal water utilization in these big citites would flourish. In 1970 the first experimental geothermal power plant using the flashing method was built in Dengwu, Guangdong province. In 1977 one MW experimental wet steam power plant was built in Yangbajain, Tibet, a 6 MW power plant in 1981, and another 3 MW generator is expected to complete in 1985. This paper is intended to summarize some important results of exploration, particularly in the geothermal reservoir engineering.

  14. National Geothermal Data System (NGDS)

    DOE Data Explorer

    The National Geothermal Data System (NGDS) is a DOE-funded distributed network of databases and data sites. Much of the risk of geothermal energy development is associated with exploring for, confirming and characterizing the available geothermal resources. The overriding purpose of the NGDS is to help mitigate this up-front risk by serving as a central gateway for geothermal and relevant related data as well as a link to distributed data sources. Assessing and categorizing the nation's geothermal resources and consolidating all geothermal data through a publicly accessible data system will support research, stimulate public interest, promote market acceptance and investment, and, in turn, the growth of the geothermal industry. Major participants in the NGDS to date include universities, laboratories, the Arizona Geological Survey and Association of American State Geologists (Arizona Geological Survey, lead), the Geothermal Resources Council, and the U.S. Geological Survey. The Geothermal Energy Association is collaborating with the NGDS to insure that it meets the needs of the geothermal industry.

  15. Geothermal energy in Nevada: development and utilization

    SciTech Connect

    Not Available

    1982-01-01

    The nature of geothermal resources in Nevada and resource applications are discussed. The social and economic advantages of using geothermal energy are outlined. Federal and state programs established to foster the development of geothermal energy are discussed. (MHR)

  16. Geothermal energy in Nevada: Development and utilization

    NASA Astrophysics Data System (ADS)

    The nature of geothermal resources in Nevada and resource applications are discussed. The social and economic advantages of using geothermal energy are outlined. Federal and state programs established to foster the development of geothermal energy are discussed.

  17. Geothermal comes of age in northeast California

    SciTech Connect

    Not Available

    1981-11-01

    The following geothermal projects are described. A commercial geothermally heated greenhouse producing cut flowers, retrofitting the California Correctional Center for geothermal heating, and four additional programs now underway by the City of Susanville and Lassen Community College. (MHR)

  18. Potential effects of environmental regulatory procedures on geothermal development

    SciTech Connect

    Beeland, G.V.; Boies, D.B.

    1981-01-01

    The potential effects of several types of applicable environmental regulatory procedures on geothermal development were assessed, and particular problem areas were identified. The possible impact of procedures adopted pursuant to the following Federal statutes were analyzed: Clean Air Act; Clean Water Act; Safe Drinking Water Act; and Resource Conservation and Recovery Act. State regulations applicable, or potentially applicable, to geothermal facilities were also reviewed to determine: permit information requirements; pre-permit air or water quality monitoring requirements; effect of mandated time frames for permit approval; and potential for exemption of small facilities. The regulations of the following states were covered in the review: Alaska; Arizona; California; Colorado; Hawaii; Idaho; Montana; Nevada; New Mexico; Oregon; Utah; Washington; and Wyoming. (MHR)

  19. Apprenticeship Carolina[TM]: Building a 21st Century Workforce through Statewide Collaboration

    ERIC Educational Resources Information Center

    Stieritz, Ann Marie

    2009-01-01

    Apprenticeship Carolina[TM] is a new division of the South Carolina Technical College System that has increased employer use of registered apprenticeship by 123% since July 2007. The initiative's success spans multiple industry clusters and is built through statewide collaborations that include public-private, state-local, and state-federal…

  20. A Model for Statewide Evaluation of a Universal Positive Behavior Support Initiative

    ERIC Educational Resources Information Center

    Elfner Childs, Karen; Kincaid, Don; George, Heather Peshak

    2010-01-01

    Several statewide evaluations of Tier 1/Universal Level Positive Behavior Support (PBS) implementation efforts have been conducted, adhering to the evaluation template developed by Horner, Sugai, and Lewis-Palmer in 2005. Building on these examples, Florida's Positive Behavior Support Project developed a comprehensive evaluation system that sought…

  1. The United State of Wyoming: Teacher-to-Teacher Initiative Boosts Reading Scores Statewide

    ERIC Educational Resources Information Center

    Lain, Sheryl

    2014-01-01

    When teachers collaborate in schools, taking collective responsibility to improve instruction and achieve goals, student performance improves and good results happen. Wyoming is one example of a state that uses peer-to-peer professional learning with notable results. Teachers joined together to form a statewide professional community and saw the…

  2. The Substance Abuse Treatment Needs of Prisoners: Implementation of an Integrated Statewide Approach

    ERIC Educational Resources Information Center

    Kubiak, Sheryl Pimlott; Boyd, Carol J.; Slayden, Janie; Young, Amy

    2005-01-01

    Studies have demonstrated that treatment for drug-involved offenders can reduce relapse and recidivism. However, few institutions utilize validated assessments of drug dependence, limiting the ability to determine and prioritize services. Toward this goal, we explain an assessment method implemented statewide using a sample of 22,069 prisoners.…

  3. Ranking School Districts on the Basis of Statewide Test Results: Is It Meaningful or Misleading?

    ERIC Educational Resources Information Center

    Guskey, Thomas R.; Kifer, Edward W.

    The validity of various procedures for rank ordering school districts throughout a state on the basis of statewide test results was studied. Data were drawn from the 1987 administration of the Kentucky Essential Skills Test (KEST), which is given each spring to all children enrolled in public school grades kindergarten through 12 in 178 school…

  4. 45 CFR 96.133 - Submission to Secretary of Statewide assessment of needs.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 45 Public Welfare 1 2013-10-01 2013-10-01 false Submission to Secretary of Statewide assessment of... State is to provide a broad range of information which includes the following: (1) The State is to... on how the State plans to strengthen the data in the future. (2) The State shall provide...

  5. 45 CFR 96.133 - Submission to Secretary of Statewide assessment of needs.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false Submission to Secretary of Statewide assessment of... State is to provide a broad range of information which includes the following: (1) The State is to... on how the State plans to strengthen the data in the future. (2) The State shall provide...

  6. 45 CFR 96.133 - Submission to Secretary of Statewide assessment of needs.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 45 Public Welfare 1 2011-10-01 2011-10-01 false Submission to Secretary of Statewide assessment of... State is to provide a broad range of information which includes the following: (1) The State is to... on how the State plans to strengthen the data in the future. (2) The State shall provide...

  7. 45 CFR 96.133 - Submission to Secretary of Statewide assessment of needs.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 45 Public Welfare 1 2012-10-01 2012-10-01 false Submission to Secretary of Statewide assessment of... State is to provide a broad range of information which includes the following: (1) The State is to... on how the State plans to strengthen the data in the future. (2) The State shall provide...

  8. 45 CFR 96.133 - Submission to Secretary of Statewide assessment of needs.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 45 Public Welfare 1 2014-10-01 2014-10-01 false Submission to Secretary of Statewide assessment of... State is to provide a broad range of information which includes the following: (1) The State is to... on how the State plans to strengthen the data in the future. (2) The State shall provide...

  9. A Statewide Information Databases Program: What Difference Does It Make to Academic Libraries?

    ERIC Educational Resources Information Center

    Lester, June; Wallace, Danny P.

    2004-01-01

    The Oklahoma Department of Libraries (ODL) launched Oklahoma's statewide database program in 1997. For the state's academic libraries, the program extended access to information, increased database use, and fostered positive relationships among ODL, academic libraries, and Oklahoma State Regents for Higher Education (OSRHE), creating a more…

  10. Why Statewide Educational Networks are Important to State and Educational Leaders

    ERIC Educational Resources Information Center

    Mathews, J.B.

    2004-01-01

    Statewide educational networks are core elements of states' education and telecommunications infrastructures. These networks influence educational success and contribute to a state's competitive status, economic development and general quality of life. Electronic communications networks are changing how people live and work in every state.…

  11. Lessons Learned Planning a Statewide Conference: "Alabama's Choice--Tobacco or Health?"

    ERIC Educational Resources Information Center

    Geiger, Brian F.

    This paper describes lessons learned while planning a statewide conference to increase the knowledge of tobacco control advocates and promote implementation of the Alabama Comprehensive Tobacco Use Prevention and Control Plan (Plan) within the state. The Plan has three overall goals: preventing youth from becoming tobacco users; promoting…

  12. 34 CFR 361.29 - Statewide assessment; annual estimates; annual State goals and priorities; strategies; and...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... goals and priorities; strategies; and progress reports. 361.29 Section 361.29 Education Regulations of... estimates; annual State goals and priorities; strategies; and progress reports. (a) Comprehensive statewide... selection, the service costs for each priority category within the order. (c) Goals and priorities—(1)...

  13. Conducting a Statewide Dual-Purpose Program for Pesticide Applicators and County Extension Agents

    ERIC Educational Resources Information Center

    Fishel, Fred; Liu, Guodong David

    2014-01-01

    The University of Florida Cooperative Extension conducted a statewide program with a dual role during 2013 and 2014 to enhance efficiency. The program provided in-service training to county Extension agents and provided continuing education to meet requirements needed by licensed pesticide applicators. Using Polycom distance technology, the event…

  14. Faculty Roles and Responsibilities: Collecting and Reporting Statewide Information on Faculty.

    ERIC Educational Resources Information Center

    Illinois State Board of Higher Education, Springfield.

    As part of its Priorities, Quality, and Productivity (PQP) initiative, the Illinois State Board of Higher Education asked institutions to address issues associated with faculty roles and responsibilities. This paper describes the statewide information collected, how the data are used in Board reports, and how improved data collection might…

  15. Federal, State, and Local Collaboration for Effective Schools: Chapter 2 "20%" Innovative Projects of Statewide Significance.

    ERIC Educational Resources Information Center

    Plato, Kathleen C.

    Chapter 2 of the Elementary and Secondary School Improvement Amendments directs that at least 80% of funds targeted under the law be delivered to school districts, while up to 20% may be reserved for statewide use. In 1989, the Office of the Superintendent of Public Instruction in Olympia (Washington) redirected this 20% to support a competitive…

  16. Trends in State Student Assessment Programs. Data on Statewide Student Assessment Programs, Fall 1997.

    ERIC Educational Resources Information Center

    Bond, Linda; Roeber, Edward; Connealy, Selena

    This document describes the trends in statewide assessment programs. It is based on surveys conducted for the Council of Chief State School Officers. Assessment directors from the 50 states were asked to provide information about the current state of assessment programs and to describe how the programs have changed over the past 6 years, including…

  17. A Massachusetts and Multi-State Approach to Statewide Assessment of Student Learning

    ERIC Educational Resources Information Center

    Crosson, Pat; Orcutt, Bonnie

    2014-01-01

    This article describes efforts in Massachusetts and the Multi-State Collaborative to Advance Learning Outcomes Assessment (MSC) to develop a statewide system for learning outcomes assessment that does not rely on standardized testing and that is designed to transcend the traditional tensions and boundaries between campus-based formative and…

  18. The Impact of Mandated Statewide Testing on Teachers' Classroom Assessment and Instructional Practices.

    ERIC Educational Resources Information Center

    McMillan, James H.; Myran, Steve; Workman, Daryl

    The impact of the new Virginia statewide Standards of Learning (SOL) testing program on classroom instructional and assessment practices was studied through surveys before and after implementation of the testing program. The sample represented responses from 570 secondary school teachers (of mathematics, social studies, English, and science) and…

  19. Florida Statewide Assessment Program 1971-72 Technical Report; Section 1: Introduction, Procedures, and Program Recommendations.

    ERIC Educational Resources Information Center

    Haynes, Judy L.; Impara, James C.

    The first section of a four-part technical report of Florida's statewide program for assessing reading-related skills in grades 2 and 4 provides an introduction to the program, a description of procedures used, and recommendations regarding program operation. Program background, design, and responsibility for assessment activities are discussed in…

  20. 20 CFR 665.210 - What are allowable Statewide workforce investment activities?

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... local employment and training activities. (h) Carrying out youth activities Statewide. (i) Preparation... investment activities? 665.210 Section 665.210 Employees' Benefits EMPLOYMENT AND TRAINING ADMINISTRATION... administration of the adult, dislocated worker and youth workforce investment activities, consistent with...

  1. An Empirically-Based Statewide System for Identifying Quality Pre-Kindergarten Programs

    ERIC Educational Resources Information Center

    Williams, Jeffrey M.; Landry, Susan H.; Anthony, Jason L.; Swank, Paul R.; Crawford, April D.

    2012-01-01

    This study presents an empirically-based statewide system that links information about pre-kindergarten programs with children's school readiness scores to certify pre-kindergarten classrooms as promoting school readiness. Over 8,000 children from 1,255 pre-kindergarten classrooms were followed longitudinally for one year. Pre-kindergarten quality…

  2. Can Leadership Be Taught? A Proposal for a Statewide Comprehensive Career and Technical Education Leadership Program

    ERIC Educational Resources Information Center

    Cathell, Pattiva McKean

    2013-01-01

    This executive position paper proposes recommendations for a statewide comprehensive career and technical education Leadership Development Program. These recommendations are based on the comprehensive Leadership Development Program designed and executed at Sussex Technical High School. The Sussex Tech comprehensive Leadership Development Program…

  3. 23 CFR 450.214 - Development and content of the long-range statewide transportation plan.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... shall reference, summarize, or contain any applicable short-range planning studies; strategic planning... TRANSPORTATION PLANNING AND RESEARCH PLANNING ASSISTANCE AND STANDARDS Statewide Transportation Planning and..., countermeasures, or projects contained in the Strategic Highway Safety Plan required by 23 U.S.C. 148. (e)...

  4. Statewide Report Card: An Annual Report to the Legislature on Oregon Public Schools, 2011-2012

    ERIC Educational Resources Information Center

    Oregon Department of Education, 2012

    2012-01-01

    The Oregon Statewide Report Card is an annual publication required by law (ORS 329.115), which reports on the state of public schools and their progress towards the goals of the Oregon Educational Act for the 21st Century. The purpose of the Oregon Report Card is to monitor trends among school districts and Oregon's progress toward achieving the…

  5. Statewide Report Card: An Annual Report to the Legislature on Oregon Public Schools, 2013-2014

    ERIC Educational Resources Information Center

    Oregon Department of Education, 2014

    2014-01-01

    The Oregon Statewide Report Card is an annual publication required by law (ORS 329.115), which reports on the state of public schools and their progress towards the goals of the Oregon Educational Act for the 21st Century. The purpose of the Oregon Report Card is to monitor trends among school districts and Oregon's progress toward achieving the…

  6. Developing a Statewide, Standards-Based Student Report Card: A Review of the Kentucky Initiative

    ERIC Educational Resources Information Center

    Guskey, Thomas R.; Swan, Gerry M.; Jung, Lee Ann

    2010-01-01

    This paper describes a major initiative in the Commonwealth of Kentucky to develop a statewide, standards-based, student report card for reporting the learning progress of individual students at all grade levels (K-12). Led by a team of researchers with expertise in grading and reporting, 36 educators from three diverse school districts created…

  7. Long-Range Statewide Enrollment and WSCH Forecast, California Community Colleges.

    ERIC Educational Resources Information Center

    McIntyre, Chuck; Chan, Chuen-Rong

    This report summarizes the most recent (December 1998) long-range statewide forecast of fall enrollment and average annual weekly student contact hours (WSCH) in California Community Colleges. The annual fall survey of college registrars shows that fall 1998 enrollment is up 1.8 percent over fall 1997. The office forecasting model projects an…

  8. Do Affirmative Action Bans Lower Minority College Enrollment and Attainment?: Evidence from Statewide Bans

    ERIC Educational Resources Information Center

    Backes, Ben

    2012-01-01

    Using institutional data on race-specific college enrollment and completion, I examine whether minority students were less likely to enroll in a four-year public college or receive a degree following a statewide affirmative action ban. As in previous studies, I find that black and Hispanic enrollment dropped at the top institutions; however, there…

  9. Florida's Children at a Glance: The 1998 Statewide and County Update.

    ERIC Educational Resources Information Center

    Weitzel, S.; Shockley, C.; Goltry, K.

    This Kids Count report examines statewide and county level trends in the well-being of Florida's children. Demographic information is presented along with a statistical portrait for the state and for each county based on indicators related to: (1) birth, including births to unwed mothers, births to teenage mothers, births receiving early prenatal…

  10. A case study: planning a statewide information resource for health professionals: an evidence-based approach

    PubMed Central

    Chew, Katherine; Watson, Linda; Parker, Mary

    2009-01-01

    Question: What is the best approach for implementing a statewide electronic health library (eHL) to serve all health professionals in Minnesota? Setting: The research took place at the University of Minnesota Health Sciences Libraries. Methods: In January 2008, the authors began planning a statewide eHL for health professionals following the five-step process for evidence-based librarianship: formulating the question, finding the best evidence, appraising the evidence, assessing costs and benefits, and evaluating the effectiveness of resulting actions. Main Results: The authors identified best practices for developing a statewide eHL for health professionals relating to audience or population served, information resources, technology and access, funding model, and implementation and sustainability. They were compared to the mission of the eHL project to drive strategic directions by developing recommendations. Conclusion: EBL can guide the planning process for a statewide eHL, but findings must be tailored to the local environment to address information needs and ensure long-term sustainability. PMID:19851487

  11. Year 1 Evaluation of Nebraska's Statewide Plan: Connecting Schools to the Internet.

    ERIC Educational Resources Information Center

    Topp, Neal W.; Grandgenett, Neal

    1996-01-01

    Reviews activities in the first year of a Nebraska plan to connect K-12 schools to the Internet, including: installing UNIX-based computers; developing a statewide training program; hiring; distributing support materials; and devising a formative evaluation process. Trends in teacher and student Internet use and eight projects in classroom…

  12. Requirements and Guidelines for Exemptions, Excuses, and Accommodations for Maryland Statewide Assessment Programs. Revised.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore.

    This document summarizes the statewide assessment programs required by the Maryland State Department of Education and the exemptions, excuses, and accommodations permitted for each program. All students are to be included to the fullest extent possible in the mandated state assessments. The accommodations for an individual student are meant to…

  13. Statewide Physical Fitness Testing: A BIG Waist or a BIG Waste?

    ERIC Educational Resources Information Center

    Morrow, James R., Jr.; Ede, Alison

    2009-01-01

    Statewide physical fitness testing is gaining popularity in the United States because of increased childhood obesity levels, the relations between physical fitness and academic performance, and the hypothesized relations between adult characteristics and childhood physical activity, physical fitness, and health behaviors. Large-scale physical…

  14. 45 CFR 205.38 - Federal financial participation (FFP) for establishing a statewide mechanized system.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ..., development or installation of a statewide automated application processing and information retrieval system... in the title IV-A (AFDC) Automated Application Processing and Information Retrieval System Guide... procedures for properly charging the cost of all systems whether acquired from public or private...

  15. 77 FR 784 - Statewide Longitudinal Data Systems; Reopening Fiscal Year (FY) 2012 Competition

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-06

    ... Systems fiscal year (FY) 2012 competition. Catalog of Federal Domestic Assistance (CFDA) Number: 84.372A SUMMARY: On September 20, 2011, we published in the Federal Register (76 FR 58252) a notice inviting... Statewide Longitudinal Data Systems; Reopening Fiscal Year (FY) 2012 Competition AGENCY: Institute...

  16. From Theory to Practice: Considerations for Implementing a Statewide Voucher System.

    ERIC Educational Resources Information Center

    Doyle, Denis P.

    This monograph analyzes trends in American educational philosophy and history in its proposal to implement an all-public statewide school voucher system. Following an introduction, section 1, "Alternative Voucher Systems," discusses three concepts: universal unregulated vouchers, favored by Milton Friedman; regulated compensatory vouchers,…

  17. The Impact of a Universal Class-Size Reduction Policy: Evidence from Florida's Statewide Mandate

    ERIC Educational Resources Information Center

    Chingos, Matthew M.

    2012-01-01

    Class-size reduction (CSR) mandates presuppose that resources provided to reduce class size will have a larger impact on student outcomes than resources that districts can spend as they see fit. I estimate the impact of Florida's statewide CSR policy by comparing the deviations from prior achievement trends in districts that were required to…

  18. High School Size and White Student College Readiness: A Statewide, Multiyear Analysis

    ERIC Educational Resources Information Center

    Moore, Robin L.; Combs, Julie P.; Slate, John R.

    2014-01-01

    We analyzed 5 years of Texas statewide data on high school size and college readiness in English Language Arts, math, and in both subjects for White students. Using Greeney and Slate's (2012) criteria, large-size high schools had over 1,500 students, medium-size high schools had 401 to 1,500 students, and small-size high schools had enrollments…

  19. New York's Statewide Approach to Increase the Number of Minority Applicants to Medical School.

    ERIC Educational Resources Information Center

    Jones, Frank; Flowers, Jacqueline Caraway

    1990-01-01

    The Associated Medical Schools of New York consortium has established a multifaceted, statewide effort aimed at increasing the pool of qualified minority applicants. The programs include academic enrichment for precollege and college students, recruitment conferences, and a program to attract minority students to residency training in New York.…

  20. Statewide Work-Based Learning Intermediary Network: Fiscal Year 2014 Report

    ERIC Educational Resources Information Center

    Iowa Department of Education, 2014

    2014-01-01

    The Statewide Work-based Learning Intermediary Network Fiscal Year 2014 Report summarizes fiscal year 2014 (FY14) work-based learning activities of the 15 regional intermediary networks. This report includes activities which occurred between October 1, 2013, to June 30, 2014. It is notable that some intermediary regional networks have been in…