Science.gov

Sample records for tampa bay fl

  1. 33 CFR 165.768 - Security Zone; MacDill Air Force Base, Tampa Bay, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Security Zone; MacDill Air Force....768 Security Zone; MacDill Air Force Base, Tampa Bay, FL. (a) Location. The following area is a... title. All waters within Tampa Bay, Florida in the vicinity of MacDill Air Force Base,...

  2. 33 CFR 165.768 - Security Zone; MacDill Air Force Base, Tampa Bay, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Security Zone; MacDill Air Force....768 Security Zone; MacDill Air Force Base, Tampa Bay, FL. (a) Location. The following area is a... title. All waters within Tampa Bay, Florida in the vicinity of MacDill Air Force Base,...

  3. 33 CFR 165.768 - Security Zone; MacDill Air Force Base, Tampa Bay, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; MacDill Air Force....768 Security Zone; MacDill Air Force Base, Tampa Bay, FL. (a) Location. The following area is a... title. All waters within Tampa Bay, Florida in the vicinity of MacDill Air Force Base,...

  4. 33 CFR 165.768 - Security Zone; MacDill Air Force Base, Tampa Bay, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Security Zone; MacDill Air Force....768 Security Zone; MacDill Air Force Base, Tampa Bay, FL. (a) Location. The following area is a... title. All waters within Tampa Bay, Florida in the vicinity of MacDill Air Force Base,...

  5. 33 CFR 165.768 - Security Zone; MacDill Air Force Base, Tampa Bay, FL.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Security Zone; MacDill Air Force....768 Security Zone; MacDill Air Force Base, Tampa Bay, FL. (a) Location. The following area is a... title. All waters within Tampa Bay, Florida in the vicinity of MacDill Air Force Base,...

  6. 33 CFR 100.734 - Annual Gasparilla Marine Parade; Hillsborough Bay, Tampa, FL.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.734 Annual Gasparilla Marine Parade; Hillsborough Bay, Tampa, FL. (a) Regulated Area. A regulated area is established... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Annual Gasparilla Marine...

  7. 33 CFR 100.734 - Annual Gasparilla Marine Parade; Hillsborough Bay, Tampa, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.734 Annual Gasparilla Marine Parade; Hillsborough Bay, Tampa, FL. (a) Regulated Area. A regulated area is established... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Annual Gasparilla Marine...

  8. 33 CFR 100.734 - Annual Gasparilla Marine Parade; Hillsborough Bay, Tampa, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.734 Annual Gasparilla Marine Parade; Hillsborough Bay, Tampa, FL. (a) Regulated Area. A regulated area is established... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Annual Gasparilla Marine...

  9. 33 CFR 100.734 - Annual Gasparilla Marine Parade; Hillsborough Bay, Tampa, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.734 Annual Gasparilla Marine Parade; Hillsborough Bay, Tampa, FL. (a) Regulated Area. A regulated area is established... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Annual Gasparilla Marine...

  10. 33 CFR 100.734 - Annual Gasparilla Marine Parade; Hillsborough Bay, Tampa, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.734 Annual Gasparilla Marine Parade; Hillsborough Bay, Tampa, FL. (a) Regulated Area. A regulated area is established... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Annual Gasparilla Marine...

  11. 77 FR 14471 - Safety Zone; Festival of States 2012 Night Parade Fireworks Display, Tampa Bay, St. Petersburg, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-12

    ... zone if authorized by the Captain of the Port St. Petersburg or a designated representative; and (5..., St. Petersburg, FL AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a temporary safety zone on the waters of Tampa Bay in St. Petersburg, Florida...

  12. 76 FR 65378 - Safety Zone; The Florida Orchestra Pops in the Park Fireworks Display, Tampa Bay, St. Petersburg, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-21

    ... Fireworks Display, Tampa Bay, St. Petersburg, FL AGENCY: Coast Guard, DHS. ACTION: Temporary final rule... vicinity of Spa Beach in St. Petersburg, Florida during The Florida Orchestra Pops in the Park Fireworks... authorized by the Captain of the Port St. Petersburg or a designated representative. DATES: This rule...

  13. Assessment of estuarine water-quality indicators using MODIS medium-resolution bands: initial results from Tampa Bay, FL

    USGS Publications Warehouse

    Hu, Chuanmin; Chen, Zhiqiang; Clayton, Tonya D.; Swarzenski; Brock, John C.; Muller-Karger, Frank E.

    2004-01-01

    Using Tampa Bay, FL as an example, we explored the potential for using MODIS medium-resolution bands (250- and 500-m data at 469-, 555-, and 645-nm) for estuarine monitoring. Field surveys during 21–22 October 2003 showed that Tampa Bay has Case-II waters, in that for the salinity range of 24–32 psu, (a) chlorophyll concentration (11 to 23 mg m−3), (b) colored dissolved organic matter (CDOM) absorption coefficient at 400 nm (0.9 to 2.5 m−1), and (c) total suspended sediment concentration (TSS: 2 to 11 mg L−1) often do not co-vary. CDOM is the only constituent that showed a linear, inverse relationship with surface salinity, although the slope of the relationship changed with location within the bay. The MODIS medium-resolution bands, although designed for land use, are 4–5 times more sensitive than Landsat-7/ETM+ data and are comparable to or higher than those of CZCS. Several approaches were used to derive synoptic maps of water constituents from concurrent MODIS medium-resolution data. We found that application of various atmospheric-correction algorithms yielded no significant differences, due primarily to uncertainties in the sensor radiometric calibration and other sensor artifacts. However, where each scene could be groundtruthed, simple regressions between in situ observations of constituents and at-sensor radiances provided reasonable synoptic maps. We address the need for improvements of sensor calibration/characterization, atmospheric correction, and bio-optical algorithms to make operational and quantitative use of these medium-resolution bands.

  14. Tampa Bay: Chapter N

    USGS Publications Warehouse

    Handley, Larry; Spear, Kathryn; Cross, Lindsay; Baumstark, René; Moyer, Ryan; Thatcher, Cindy

    2013-01-01

    Tampa Bay is Florida’s largest open-water estuary and encompasses an area of approximately 1036 km2 (400 mi2) (Burgan and Engle, 2006; TBNEP, 2006). The Bay’s watershed drains 5,698 km2 (2,200 mi2) of land and includes freshwater from the Hillsborough River to the north east, the Alafia and Little Manatee rivers to the east, and the Manatee River to the south (Figure 1). Freshwater inflow also enters the bay from the Lake Tarpon Canal, from small tidal tributaries, and from watershed runoff. Outflow travels from the upper bay segments (Hillsborough Bay and Old Tampa Bay) into Middle and Lower Tampa Bay. Southwestern portions of the water shed flow through Boca Ciega Bay into the Intracoastal Waterway and through the Southwest Channel and Passage Key Inlet into the Gulf of Mexico. The average depth in most of Tampa Bay is only 3.4 m (11 ft); however, 129 km (80 mi) of shipping channels with a maximum depth of 13.1 m (43 ft) have been dredged over time and are regularly maintained. These channels help to support the three ports within the bay, as well as commercial and recreational boat traffic.

  15. Effects of ghost shrimp on zinc and cadmium in sediments from Tampa Bay, FL

    USGS Publications Warehouse

    Klerks, P.L.; Felder, D.L.; Strasser, K.; Swarzenski, P.W.

    2007-01-01

    This study investigated the effects that ghost shrimp have on the distribution of metals in sediment. We measured levels of HNO3-extractable zinc and cadmium in surface sediment, in ghost shrimp burrow walls and in sediment ejected by the ghost shrimp from their burrows, at five sandy intertidal sites in Tampa Bay. Ghost shrimp densities and their rate of sediment ejection were also quantified, as were sediment organic content and silt + clay content. Densities of ghost shrimp (Sergio trilobata and Lepidophthalmus louisianensis) averaged 33/m2 at our sites, and they ejected sediment at an average rate of 28 g/burrow/day. Levels of both Zn and Cd were significantly higher in burrow walls than in surface sediments. Sediment ejected by the shrimp from their burrows had elevated levels of Zn (relative to surface sediments) at one of the sites. Sediment organic content and silt + clay content were higher in burrow-wall sediments than in ejected sediment, which in turn tended to have values above those of surface sediments. Differences in levels of HNO3-extractable Zn and Cd among sediment types may be a consequence of these sediments differing in other physiochemical characteristics, though the differences in metal levels remained statistically significant for some sites after correcting for differences in organic content and silt + clay content. We conclude that the presence of ghost shrimp burrows contributes to spatial heterogeneity of sedimentary metal levels, while the ghost shrimp bioturbation results in a significant flux of metals to the sediment surface and is expected to decrease heterogeneity of metal levels in sedimentary depth profiles.

  16. USGS Tampa Bay Pilot Study

    USGS Publications Warehouse

    Yates, K.K.; Cronin, T. M.; Crane, M.; Hansen, M.; Nayeghandi, A.; Swarzenski, P.; Edgar, T.; Brooks, G.R.; Suthard, B.; Hine, A.; Locker, S.; Willard, D.A.; Hastings, D.; Flower, B.; Hollander, D.; Larson, R.A.; Smith, K.

    2007-01-01

    Providing a web-based digital information management system of information for scientists and the public, including a system that supports the work of those officials who must make decisions that affect the state of the bay. The Tampa Bay Study is in its sixth year and will continue through September 2007. This paper presents a non-inclusive summary of key findings associated with the six primary project components listed above. Component 4 (above) is described in detail in the following chapter 13. More information on the Tampa Bay Study is available from our on-line digital information system for the Tampa Bay Study at http://gulfsci.usgs.gov.

  17. Tampa Bay environmental atlas

    SciTech Connect

    Kunneke, J.T.; Palik, T.F.

    1984-12-01

    Biological and water resource data for Tampa Bay were compiled and mapped at a scale of 1:24,000. This atlas consists of (1) composited information overlain on 18 biological and 20 water resource base maps and (2) an accompanying map narrative. Subjects mapped on the water resource maps are contours of the mean middepth specific conductivity which can be converted to salinity; bathymetry, sediments, tidal currents, the freshwater/saltwater interface, dredge spoil disposal sites; locations of industrial and municipal point source discharges, tide stations, and water quality sampling stations. The point source discharge locations show permitted capacity and the water quality sampling stations show 5-year averages for chlorophyll, conductivity, turbidity, temperature, and total nitrogen. The subjects shown on the biological resource maps are clam and oyster beds, shellfish harvest areas, colonial bird nesting sites, manatee habitat, seagrass beds and artificial reefs. Spawning seasons, nursery habitats, and adult habitats are identified for major fish species. The atlas will provide useful information for coastal planning and management in Tampa Bay.

  18. Tampa Bay Ecosystem Services webpage

    EPA Science Inventory

    Public website describing research on the large-scale physical, chemical, and biological dynamics of coastal wetlands and estuaries, with emphasis on the Gulf of Mexico. Hyperlinks direct users to mapped ecosystem services of interest and value to Tampa Bay area residents, and i...

  19. TAMPA BAY: THE COMPREHENSIVE CONSERVATION AND MANAGEMENT PLAN FOR TAMPA BAY

    EPA Science Inventory

    The Tampa Bay National Estuary Program was established in 1991 to assist the community in developing a comprehensive plan to restore and protect Tampa Bay. The program is part of a national network of 28 estuary programs established under the Clean Water Act and administered nati...

  20. Tampa Bay Regional Atmospheric Chemistry Experiment: Overview

    NASA Astrophysics Data System (ADS)

    Atkeson, T. D.

    2003-12-01

    The Tampa Bay Estuary Program (TBEP) was formed in 1991 to assist in developing a comprehensive plan to restore and protect Tampa Bay in Florida, USA. An ecological indicator of the health of the Bay is the coverage of seagrasses, historically in decline, which are important to the aquatic habitat and food web of the bay. Seagrass decline is linked to excess of plant-stimulating forms of nitrogen to the bay, promoting algae growth, which shades out light needed to sustain seagrasses. One element of the TBEP is a private-local-state, multi-agency Nitrogen Management Consortium that seeks to limit nitrogen loading to the Bay to the 1992-1994 average. Present estimates suggest atmospheric deposition comprises ~ 30% of the nitrogen budget of the Bay. This estimate was based, however, on limited ambient monitoring data and simple models, typical of such national estuary program efforts nationwide. In the Bay Regional Atmospheric Chemistry Experiment Florida DEP joined with TBEP to increase the intensity, sophistication and spatial scope of monitoring and modeling and provide better information on air quality in the Tampa Bay area. The result will be improved estimates of the effects of local and regional emissions of oxides of nitrogen (NOx) on the Bay and the benefits to be gained from implementation of emissions reduction strategies.

  1. Management case study: Tampa Bay, Florida

    USGS Publications Warehouse

    Morrison, G.; Greening, H.S.; Yates, K.K.

    2012-01-01

    Tampa Bay, Florida,USA, is a shallow,subtropical estuary that experienced severe cultural eutrophication between the 1940s and 1980s, a period when the human population of its watershed quadrupled. In response, citizen action led to the formation of a public- and private-sector partnership (the Tampa Bay Estuary Program), which adopted a number of management objectives to support the restoration and protection of the bay’s living resources. These included numeric chlorophyll a and water-clarity targets, as well as long-term goals addressing the spatial extent of sea grasses and other selected habitat types, to support estuarine-dependent faunal guilds.

  2. Influence of Watershed Characteristics on Wetland Hydrology (Tampa, FL)

    EPA Science Inventory

    The availability of oxygen in wetland soils is a major driver of rate changes for several important ecological functions (e.g. nutrient processing, carbon sequestration) that the Tampa Bay Ecosystem Services Research Program (TB-ESRP) is quantifying to estimate ecosystem services...

  3. Gulf of Mexico Integrated Science - Tampa Bay Study Overview

    USGS Publications Warehouse

    Yates, Kimberly

    2004-01-01

    The U.S. Geological Survey's Gulf of Mexico Integrated Science - Tampa Bay Study combines the expertise of federal, state, and local partners to address some of the most pressing ecological problems of the Tampa Bay estuary. This project serves as a template for integrated research projects in other coastal ecosystems in the nation. The Tampa Bay Study focuses on the scientific needs of the Bay, as identified by resource managers.

  4. 76 FR 68098 - Safety Zone; Fourth Annual Chillounge Night St. Petersburg Fireworks Display, Tampa Bay, St...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-03

    ... Register (76 FR 44531). We received no comments on the proposed rule. No public meeting was requested, and... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Fourth Annual Chillounge Night St. Petersburg Fireworks Display, Tampa Bay, St. Petersburg, FL AGENCY: Coast Guard, DHS. ] ACTION:...

  5. 76 FR 44531 - Safety Zone; Fourth Annual Chillounge Night St. Petersburg Fireworks Display, Tampa Bay, St...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-26

    ... FR 3316). Public Meeting We do not now plan to hold a public meeting. But you may submit a request... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Fourth Annual Chillounge Night St. Petersburg Fireworks Display, Tampa Bay, St. Petersburg, FL AGENCY: Coast Guard, DHS. ACTION: Notice...

  6. Gulf of Mexico Integrated Science - Tampa Bay Study - Historical and Prehistorical Record of Tampa Bay Environments

    USGS Publications Warehouse

    Edgar, Terry

    2005-01-01

    To study how Tampa Bay, Florida, has changed over time, the prehistorical conditions and natural variations in the bay environment are being evaluated. These variations can be tracked by examining the sediments that have accumulated in and around the bay. The prehistorical record, which pre-dates settlers' arrival in the Tampa Bay area around 1850, provides a baseline with which to compare and evaluate the magnitude and effects of sea-level, climate, biological, geochemical, and man-made changes. These data also are valuable for planning and conducting projects aimed at restoring wetlands and other estuarine habitats to their original state. In addition, the data provide a basis for judging efforts to improve the health of the bay.

  7. Management case study: Tampa Bay, Florida

    USGS Publications Warehouse

    Morrison, Gerold; Greening, Holly; Yates, Kimberly K.

    2011-01-01

    Tampa Bay, Florida, USA, is a shallow, subtropical estuary that experienced severe cultural eutrophication between the 1940s and 1980s, a period when the human population of its watershed quadrupled. In response, citizen action led to the formation of a public- and private-sector partnership (the Tampa Bay Estuary Program), which adopted a number of management objectives to support the restoration and protection of the bay’s living resources. These included numeric chlorophyll a and water-clarity targets, as well as long-term goals addressing the spatial extent of seagrasses and other selected habitat types, to support estuarine-dependent faunal guilds. Over the past three decades, nitrogen controls involving sources such as wastewater treatment plants, stormwater conveyance systems, fertilizer manufacturing and shipping operations, and power plants have been undertaken to meet these and other management objectives. Cumulatively, these controls have resulted in a 60% reduction in annual total nitrogen (TN) loads relative to earlier worse-case (latter 1970s) conditions. As a result, annual water-clarity and chlorophyll a targets are currently met in most years, and seagrass cover measured in 2008 was the highest recorded since 1950. Factors that have contributed to the observed improvements in Tampa Bay over the past several decades include the following: (1) Development of numeric, science-based water-quality targets to meet a long-term goal of restoring seagrass acreage to 1950s levels. Empirical and mechanistic models found that annual average chlorophyll a concentrations were a primary manageable factor affecting light attenuation. The models also quantified relationships between TN loads, chlorophyll a concentrations, light attenuation, and fluctuations in seagrass cover. The availability of long-term monitoring data, and a systematic process for using the data to evaluate the effectiveness of management actions, has allowed managers to track progress and

  8. Prioritization of Ecosystem Services Research: Tampa Bay Demonstration Project.

    EPA Science Inventory

    The Tampa Bay Ecosystem Services Demonstration Project (TBESDP) is a component of the U.S. Environmental Protection Agency’s Ecosystem Services Research Program. The principal objectives of TBESDP are (1) to quantify the ecosystem services of the Tampa Bay watershed, (2) to deter...

  9. Tampa Bay Ecosystem Services Demonstration Pilot Phase 2 web site

    EPA Science Inventory

    The value of nature's benefits is difficult to consider in environmental decision-making since ecosystem goods and services are usually not well measured or quantified in economic terms. The Tampa Bay Estuary Program, Tampa Bay Regional Planning Council, the U.S. Environmental Pr...

  10. Integrating science and resource management in Tampa Bay, Florida

    USGS Publications Warehouse

    Yates, Kimberly K.; Greening, Holly; Morrison, Gerold

    2011-01-01

    Tampa Bay is recognized internationally for its remarkable progress towards recovery since it was pronounced "dead" in the late 1970s. Due to significant efforts by local governments, industries and private citizens throughout the watershed, water clarity in Tampa Bay is now equal to what it was in 1950, when population in the watershed was less than one-quarter of what it is today. Seagrass extent has increased by more than 8,000 acres since the mid-1980s, and fish and wildlife populations are increasing. Central to this successful turn-around has been the Tampa Bay resource management community's long-term commitment to development and implementation of strong science-based management strategies. Research institutions and agencies, including Eckerd College, the Florida Wildlife Commission Fish and Wildlife Research Institute, Mote Marine Laboratory, National Oceanic and Atmospheric Administration, the Southwest Florida Water Management District, University of South Florida, U.S. Environmental Protection Agency, U.S. Geological Survey, local and State governments, and private companies contribute significantly to the scientific basis of our understanding of Tampa Bay's structure and ecological function. Resource management agencies, including the Tampa Bay Regional Planning Council's Agency on Bay Management, the Southwest Florida Water Management District's Surface Water Improvement and Management Program, and the Tampa Bay Estuary Program, depend upon this scientific basis to develop and implement regional adaptive management programs. The importance of integrating science with management has become fully recognized by scientists and managers throughout the region, State and Nation. Scientific studies conducted in Tampa Bay over the past 10–15 years are increasingly diverse and complex, and resource management programs reflect our increased knowledge of geology, hydrology and hydrodynamics, ecology and restoration techniques. However, a synthesis of this

  11. Lightning phenomenology in the Tampa Bay Area

    NASA Technical Reports Server (NTRS)

    Peckham, D. W.; Uman, M. A.; Wilcox, C. E., Jr.

    1984-01-01

    A commercial lightning-locating system (LLS) was employed in the study of lightning phenomenology in the Tampa Bay area of Florida. The LLS output included the time, location, number of strokes per flash, and initial peak magnetic field value of first strokes for lightning ground flashes lowering negative charge. Attention is given to the design and the operation of the LLS, and the experimental results. Measured properties of each of 111 storms are given in a number of tables. It was observed that the apparent motion associated with the lightning activity in storm systems was not due to the motion of the individual single-peak and multiple-peak storms but rather to the successive growth of new storms near previously active storms.

  12. Tampa Bay Ecosystem Services Demonstration Project Website: Phase II

    EPA Science Inventory

    The Tampa Bay Ecosystem Services Demonstration Project models the impact of human development and natural stressors on the economic, aesthetic and cultural value of local ecosystems. By linking ecological structures, functions, and condition to the ecosystem services valued by h...

  13. 75 FR 35080 - Tampa Bay Refuges, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-21

    ... the Federal Register on December 3, 2004 (69 FR 70276). For more about the process, please see that... in the Federal Register on April 24, 2009 (74 FR 18744). We held two meetings to present the Draft... gulls, black skimmers, and royal terns, and small numbers of herons and egrets, nested annually...

  14. Dynamic modeling of Tampa Bay urban development using parallel computing

    USGS Publications Warehouse

    Xian, G.; Crane, M.; Steinwand, D.

    2005-01-01

    Urban land use and land cover has changed significantly in the environs of Tampa Bay, Florida, over the past 50 years. Extensive urbanization has created substantial change to the region's landscape and ecosystems. This paper uses a dynamic urban-growth model, SLEUTH, which applies six geospatial data themes (slope, land use, exclusion, urban extent, transportation, hillside), to study the process of urbanization and associated land use and land cover change in the Tampa Bay area. To reduce processing time and complete the modeling process within an acceptable period, the model is recoded and ported to a Beowulf cluster. The parallel-processing computer system accomplishes the massive amount of computation the modeling simulation requires. SLEUTH calibration process for the Tampa Bay urban growth simulation spends only 10 h CPU time. The model predicts future land use/cover change trends for Tampa Bay from 1992 to 2025. Urban extent is predicted to double in the Tampa Bay watershed between 1992 and 2025. Results show an upward trend of urbanization at the expense of a decline of 58% and 80% in agriculture and forested lands, respectively. ?? 2005 Elsevier Ltd. All rights reserved.

  15. Holocene Infilling History of Tampa Bay, Florida

    NASA Astrophysics Data System (ADS)

    Brooks, G. R.; Larson, R. A.; Cronin, T.; Willard, D.

    2007-05-01

    Tampa Bay is a shallow, sediment-starved estuary located along the central Florida Gulf coast. Based upon sedimentologic, biostratigraphic, and geochronologic analyses of 120 sediment cores and 190 surface sediment samples, karst-controlled basins located in the mid to upper estuary were found to contain a continuous sedimentary record documenting the Holocene sea-level rise and infilling history. The basal unit sampled in cores consists of organic-rich and/or carbonate-rich sediments containing freshwater fauna. Interpreted as lake deposits, the surficial sediments of these units were dated at approximately 8-9 ka suggesting that isolated sinkhole lakes occupied the region prior to being flooded by the Holocene sea-level rise. Overlying the lake deposits, dm-scale, organic-rich muds containing brackish water fauna, represent the transition from fresh to marine conditions as sea level flooded the region. The flooding surface itself is generally undefined, but sometimes represented by a mm-scale layer of shell fragments likely representing a lag deposit. Age dates bracketing this layer show that flooding occurred approximately 6-7 ka. Overlying sediments consist of 3-4 m of organic-rich, sandy muds with typical estuarine fauna. Age dates from the base of this unit indicate estuarine conditions became established approximately 5.5-6 ka. The modern expression of karst basins is a series of shallow, bathymetric depressions, likely reflecting the historically slow rate (0.030-0.065 cm/yr) of fine- grained sediment accumulation. These shallow depressions continue to function as fine-grained sediment sinks, but are now rapidly filling as the rate of accumulation has dramatically increased by approximately one order-of-magnitude (0.16-0.32 cm/yr) within the past 100 years, likely due to human activities.

  16. Tampa Bay Water Clarity Model (TBWCM): As a Predictive Tool

    EPA Science Inventory

    The Tampa Bay Water Clarity Model was developed as a predictive tool for estimating the impact of changing nutrient loads on water clarity as measured by secchi depth. The model combines a physical mixing model with an irradiance model and nutrient cycling model. A 10 segment bi...

  17. Biological interference of optical backscatterance sensors in Tampa Bay, Florida

    USGS Publications Warehouse

    Schoellhamer, D.H.

    1993-01-01

    Optical backscatterance (OBS, D&A Instruments, Inc.1 1 Use of brand, firm, or trade names in this paper is for identification purposes only and does not constitute endorsement by the U.S. Geological Survey.) sensors for measuring suspended-solids concentrations have been deployed in Tampa Bay to monitor resuspension of bottom sediments. This paper describes biological factors that affected the OBS sensors deployed in Tampa Bay and discusses deployment strategies that minimize biological interference. Phytoplankton may interfere with the OBS sensors when the suspended-solids concentration is near or below the sensor response threshold. Fish swimming in front of the OBS sensors caused spikes in the OBS sensor output, so the median average was more appropriate than the mean average. An algal slime on the OBS sensors caused excessive backscatterance that dominated the backscatterance from suspended material. Because of the fouling problem, deployments were limited to less than a week, and OBS sensors were cleaned daily, if possible. Calibration of OBS sensors with water samples collected from Tampa Bay was satisfactory when biological interference was not significant. When properly deployed, the OBS sensors can successfully monitor sediment resuspension in Tampa Bay and similar subtropical estuaries. ?? 1993.

  18. The ecology of Tampa Bay, Florida: An estuarine profile

    SciTech Connect

    Lewis, R.R. III; Estevez, E.D.

    1988-09-01

    Tampa Bay is Florida's largest open-water estuary and one of the most highly urbanized. This report summarizes and synthesizes many years of scientific investigation into Tampa Bay's geology, hydrology and hydrography, water chemistry, and biotic components. The estuary is a phytoplankton-based system, with mangroves being the second most important primary producer. Benthic organisms are abundant and diverse, although in parts of the bay the benthos consists of a relatively few opportunistic and pollution indicator species. The estuary provides habitat for the juveniles and adults of a number of commercial and recreational fishery species. Significant changes occurring as a result of urbanization and industrialization include significant declines in intertidal wetlands and seagrass meadows, changes in circulation and flushing, and degradation of water quality. Important management issues include dredge and fill operations, restoration of fisheries, increasing freshwater flow to the bay, and eutrophication. 257 refs., 85 figs., 27 tabs.

  19. Risk Assessment of Hurricane Storm Surge for Tampa Bay

    NASA Astrophysics Data System (ADS)

    Lin, N.; Emanuel, K.

    2011-12-01

    Hurricane storm surge presents a major hazard for the United States and many other coastal areas around the world. Risk assessment of current and future hurricane storm surge provides the basis for risk mitigation and related decision making. This study investigates the hurricane surge risk for Tampa Bay, located on the central west coast of Florida. Although fewer storms have made landfall in the central west Florida than in regions farther west in the Gulf of Mexico and the east coast of U.S., Tampa Bay is highly vulnerable to storm surge due to its geophysical features. It is surrounded by low-lying lands, much of which may be inundated by a storm tide of 6 m. Also, edge waves trapped on the west Florida shelf can propagate along the coastline and affect the sea level outside the area of a forced storm surge; Tampa Bay may be affected by storms traversing some distance outside the Bay. Moreover, when the propagation speed of the edge wave is close to that of a storm moving parallel to the coast, resonance may occur and the water elevation in the Bay may be greatly enhanced. Therefore, Tampa Bay is vulnerable to storms with a broad spectrum of characteristics. We apply a model-based risk assessment method to carry out the investigation. To estimate the current surge risk, we apply a statistical/deterministic hurricane model to generate a set of 1500 storms for the Tampa area, under the observed current climate (represented by 1981-2000 statistics) estimated from the NCAR/NCEP reanalysis. To study the effect of climate change, we use four climate models, CNRM-CM3, ECHAM, GFDL-CM2.0, and MIROC3.2, respectively, to drive the hurricane model to generate four sets of 1500 Tampa storms under current climate conditions (represented by 1981-2000 statistics) and another four under future climate conditions of the IPCC-AR4 A1B emission scenario (represented by 2081-2100 statistics). Then, we apply two hydrodynamic models, the Advanced Circulation (ADCIRC) model and the Sea

  20. 77 FR 3031 - Release of Airport Property: Tampa International Airport, Tampa, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-20

    ..., Suite 400, Orlando, FL 32822. Written comments on the Sponsor's request must be delivered or mailed to: Rebecca R. Henry, Program Manager, Orlando Airports District Office, 5950 Hazeltine National Drive, Suite 400, Orlando, FL 32822-5024. FOR FURTHER INFORMATION CONTACT: Rebecca R. Henry, Program...

  1. 33 CFR 110.193 - Tampa Bay, Fla.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... anchorage east of Mullet Key. A rectangular area in Tampa Bay, approximately 4,459 yards long and 1,419 yards wide, beginning at latitude 27°38′30″, longitude 82°39′09″, and extending northeasterly to...°, 1,750 yards from Cut “F” Range Front Light; thence to a point bearing 125°, 2,050 yards, from Cut...

  2. Utility of hyperspectral imagery for seagrass mapping in Tampa Bay

    NASA Astrophysics Data System (ADS)

    Carlson, P. R.

    2006-12-01

    Tampa Bay has lost significant amounts of seagrass as the result of declines in water clarity. Of the 16,300 ha of seagrass present in 1950, only 8800 ha remained in 1982. However, since the mid 1980's, a concerted effort has been made to improve Tampa Bay water quality, and seagrass cover increased to 10500 ha in 2002. This project was undertaken to determine whether hyperspectral imagery can be used to 1) replace traditional seagrass mapping methods and 2) distinguish between seagrasses and macroalgae such as Caulerpa prolifera. Hyperspectral imagery of the shoreline of Tampa Bay was acquired in May 2005, using the AISA hyperspectral sensor flown on an aircraft at an altitude of 1500 m. For seagrass mapping tests, a study area near Apollo Beach, Florida was selected for analysis. The area was selected because it contains a number of features which make seagrass classification from natural color aerial photographs extremely difficult: variable water depth, CDOM, and mixed seagrass/algal species composition. Classification accuracy was assessed using confusion matrices based on a separate group of 155 data points selected haphazardly throughout the image. Unsupervised classification by the Isodata method using all 90 spectral bands between 394 and 803 nm resulted in poor classification accuracy. However, first derivative spectra identified six key wavelengths with potential for habitat classification (770, 759, 717, 688, 589, and 492 nm). Minimum distance classification based on these six wavelengths improved overall classification accuracy to 95 percent. The prospect of replacing manual interpretation of aerial photography with supervised classification of hyperspectral imagery seems very feasible. With some additional testing, the technique may become the operational standard for seagrass mapping in Tampa Bay.

  3. 33 CFR 165.753 - Regulated navigation area; Tampa Bay, Florida.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... with 47 CFR 80.331 on VHF-FM channel 13 at the following broadcast/reporting points: (1) Prior to... nature of any hazardous conditions as defined by 33 CFR 160.203. (d) Nothing in this section shall... (RNA): All the navigable waters of Tampa Bay, Hillsborough Bay and Old Tampa Bay, including...

  4. 33 CFR 165.753 - Regulated navigation area; Tampa Bay, Florida.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... with 47 CFR 80.331 on VHF-FM channel 13 at the following broadcast/reporting points: (1) Prior to... nature of any hazardous conditions as defined by 33 CFR 160.203. (d) Nothing in this section shall... (RNA): All the navigable waters of Tampa Bay, Hillsborough Bay and Old Tampa Bay, including...

  5. 33 CFR 165.753 - Regulated navigation area; Tampa Bay, Florida.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... with 47 CFR 80.331 on VHF-FM channel 13 at the following broadcast/reporting points: (1) Prior to... nature of any hazardous conditions as defined by 33 CFR 160.203. (d) Nothing in this section shall... (RNA): All the navigable waters of Tampa Bay, Hillsborough Bay and Old Tampa Bay, including...

  6. 33 CFR 165.753 - Regulated navigation area; Tampa Bay, Florida.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... with 47 CFR 80.331 on VHF-FM channel 13 at the following broadcast/reporting points: (1) Prior to... nature of any hazardous conditions as defined by 33 CFR 160.203. (d) Nothing in this section shall... (RNA): All the navigable waters of Tampa Bay, Hillsborough Bay and Old Tampa Bay, including...

  7. High resolution seismic stratigraphy of Tampa Bay, Florida

    SciTech Connect

    Tihansky, A.B.; Hine, A.C.; Locker, S.D.; Doyle, L.D. . Dept. of Marine Science)

    1993-03-01

    Tampa Bay is one of two large embayments that interrupt the broad, regional nature of the carbonate ramp of the west coast of the Florida carbonate platform. It is believed to have formed as a result of preferential dissolution of the Cenozoic limestones beneath it. Highly reactive freshwater systems became hydrologically focused in the bay region as the surface and groundwater systems established themselves during sea-level lowstands. This weakening of the underlying limestone resulted in extensive karstification, including warping, subsidence, sinkhole and spring formation. Over 120 miles of high resolution seismic reflection data were collected within Tampa Bay. This record has been tied into 170 core borings taken from within the bay. This investigation has found three major seismic stratigraphic sequences beneath the bay. The lowermost sequence is probably of Miocene age. Its surface is highly irregular due to erosion and dissolution and exhibits a great deal of vertical relief as well as gentler undulations or warping. Much of the middle sequence consists of low angle clinoforms that gently downlap and fill in the underlying karst features. The uppermost sequence is a discontinuous unit comprised of horizontal to low angle clinoforms that are local in their extent. The recent drainage and sedimentation patterns within the bay area are related to the underlying structure controlled by the Miocene karst activity.

  8. Gulf of Mexico integrated science - Tampa Bay study, the impact of groundwater and contaminants on Tampa Bay

    USGS Publications Warehouse

    Swarzenski, Peter W.

    2005-01-01

    Despite the recreational and economic value of coastal bays and estuaries, these ecosystems are often among our most 'troubled' natural environments. Urbanization, agriculture, mining, and shipping are just a few activities that can have a profound and lasting impact on the coastal zone. In order to maintain a healthy coastal ecosystem, it is crucial to develop reasonable management practices around expert scientific information. We still have much to learn about the quantity and quality of groundwater being discharged into Tampa Bay, Florida. We also need to improve our knowledge of a wide range of contaminants entering the bay and must be able to determine where they accumulate in seafloor sediments. Such buried contaminants can potentially be harmful to biota if they are released to the water column. U.S. Geological Survey (USGS) scientists and research partners from the University of South Florida (USF), the University of Florida (UF), and the Florida Marine Research Institute (FMRI) are mapping sources of groundwater, measuring groundwater flow into Tampa Bay, and assessing the impact of contaminants and sediments on bay water quality and ecosystem health.

  9. Colored dissolved organic matter in Tampa Bay, Florida

    USGS Publications Warehouse

    Chen, Z.; Hu, C.; Conmy, R.N.; Muller-Karger, F.; Swarzenski, P.

    2007-01-01

    Absorption and fluorescence of colored dissolved organic matter (CDOM) and concentrations of dissolved organic carbon (DOC), chlorophyll and total suspended solids in Tampa Bay and its adjacent rivers were examined in June and October of 2004. Except in Old Tampa Bay (OTB), the spatial distribution of CDOM showed a conservative relationship with salinity in June, 2004 (aCDOM(400) = − 0.19 × salinity + 6.78, R2 = 0.98, n = 17, salinity range = 1.1–32.5) with little variations in absorption spectral slope and fluorescence efficiency. This indicates that CDOM distribution was dominated by mixing. In October, 2004, CDOM distribution was nonconservative with an average absorption coefficient (aCDOM(400), ∼ 7.76 m-1) about seven times higher than that in June (∼ 1.11 m-1). The nonconservative behavior was caused largely by CDOM removal at intermediate salinities (e.g., aCDOM(400) removal > 15% at salinity ∼ 13.0), which likely resulted from photobleaching due to stronger stratification. The spatial and seasonal distributions of CDOM in Tampa Bay showed that the two largest rivers, the Alafia River (AR) and Hillsborough River (HR) were dominant CDOM sources to most of the bay. In OTB, however, CDOM showed distinctive differences: lower absorption coefficient, higher absorption spectral slopes, and lower ratios of CDOM absorption to DOC and higher fluorescence efficiency. These differences may have stemmed from (1) changes in CDOM composition by more intensive photobleaching due to the longer residence time of water mass in OTB; (2) other sources of CDOM than the HR/AR inputs, such as local creeks, streams, groundwater, and/or bottom re-suspension. Average CDOM absorption in Tampa Bay at 443 nm, aCDOM(443), was about five times higher in June and about ten times higher in October than phytoplankton pigment absorption, aph(443), indicating that blue light attenuation in the water column was dominated by CDOM rather than by phytoplankton absorption throughout the

  10. Observation of sediment resuspension in Old Tampa Bay, Florida

    USGS Publications Warehouse

    Schoellhamer, David H.

    1990-01-01

    Equipment and methodology have been developed to monitor sediment resuspension at two sites in Old Tampa Bay. Velocities are measured with electromagnetic current meters and suspended solids and turbidity are monitored with optical backscatterance sensors. In late November 1989, a vertical array of instrument pairs was deployed from a permanent platform at a deep-water site, and a submersible instrument package with a single pair of instruments was deployed at a shallow-water site. Wind waves caused resuspension at the shallow-water site, but not at the deeper platform site, and spring tidal currents did not cause resuspension at either site.

  11. 33 CFR 80.810 - Cape San Blas, FL to Perdido Bay, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ..., FL to Perdido Bay, FL. (a) A line drawn from St. Joseph Bay Entrance Range A Rear Light through St. Joseph Bay Entrance Range B Front Light to St. Joseph Point. (b) A line drawn across the mouth of Salt... Choctawatchee Bay Entrance Jetties. (g) An east-west line drawn from Fort McRee Leading Light across...

  12. 33 CFR 80.810 - Cape San Blas, FL to Perdido Bay, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ..., FL to Perdido Bay, FL. (a) A line drawn from St. Joseph Bay Entrance Range A Rear Light through St. Joseph Bay Entrance Range B Front Light to St. Joseph Point. (b) A line drawn across the mouth of Salt... Choctawatchee Bay Entrance Jetties. (g) An east-west line drawn from Fort McRee Leading Light across...

  13. Diurnal variation of oxygen and carbonate system parameters in Tampa Bay and Florida Bay

    USGS Publications Warehouse

    Yates, K.K.; Dufore, C.; Smiley, N.; Jackson, C.; Halley, R.B.

    2007-01-01

    Oxygen and carbonate system parameters were measured, in situ, over diurnal cycles in Tampa Bay and Florida Bay, Florida. All system parameters showed distinct diurnal trends in Tampa Bay with an average range of diurnal variation of 39.1 μmol kg− 1 for total alkalinity, 165.1 μmol kg− 1 for total CO2, 0.22 for pH, 0.093 mmol L− 1 for dissolved oxygen, and 218.1 μatm for pCO2. Average range of diurnal variation for system parameters in Tampa Bay was 73% to 93% of the seasonal range of variability for dissolved oxygen and pH. All system parameters measured in Florida Bay showed distinct variation over diurnal time-scales. However, clear diurnal trends were less evident. The average range of diurnal variability in Florida Bay was 62.8 μmol kg− 1 for total alkalinity, 130.4 μmol kg− 1 for total CO2, 0.13 for pH, 0.053 mmol L− 1 for dissolved oxygen, and 139.8 μatm for pCO2. The average range of diurnal variation was 14% to 102% of the seasonal ranges for these parameters. Diurnal variability in system parameters was most influenced by primary productivity and respiration of benthic communities in Tampa Bay, and by precipitation and dissolution of calcium carbonate in Florida Bay. Our data indicate that use of seasonal data sets without careful consideration of diurnal variability may impart significant error in calculations of annual carbon and oxygen budgets. These observations reinforce the need for higher temporal resolution measurements of oxygen and carbon system parameters in coastal ecosystems.

  14. Gulf of Mexico Integrated Science - Tampa Bay Study - Data Information Management System (DIMS)

    USGS Publications Warehouse

    Johnston, James

    2004-01-01

    The Tampa Bay Integrated Science Study is an effort by the U.S. Geological Survey (USGS) that combines the expertise of federal, state and local partners to address some of the most pressing ecological problems of the Tampa Bay estuary. This project serves as a template for the application of integrated research projects in other estuaries in the Gulf of Mexico. Efficient information and data distribution for the Tampa Bay Study has required the development of a Data Information Management System (DIMS). This information system is being used as an outreach management tool, providing information to scientists, decision makers and the public on the coastal resources of the Gulf of Mexico.

  15. IDENTIFICATION OF SOURCES AND ESTIMATION OF EMISSION PROFILES FROM HIGHLY TIME-RESOLVED POLLUTANT MEASUREMENTS IN TAMPA, FL

    EPA Science Inventory

    Aerosol slurry samples were collected at 30-min intervals for sequential 1-month periods at each of two sites (Sydney and "Dairy") in the Tampa Bay area during the 2002 Bay Regional Atmospheric Chemistry Experiment using the University of Maryland Semicontinuous Elements in Aeros...

  16. Integrated Approaches to Estuarine Use and Protection: Tampa Bay Ecosystem Services Case Study.

    EPA Science Inventory

    The Tampa Bay region faces projected stress from climate change, contaminants, nutrients, and of human development on a natural ecosystem that is valued (economically, aesthetically and culturally) in its present state. With fast-paced population increases, conversion and develop...

  17. 78 FR 19195 - RH International, LLC, 2531 West Maryland Avenue, Tampa, FL 33629, Respondent, Mohammad Reza (a/k...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-29

    ..., the most recent being that of August 15, 2012 (77 FR 49699, August 16, 2012), has continued the..., Respondent, Mohammad Reza (a/k/a Ray) Hajian, 2531 West Maryland Avenue, Tampa, FL 33629, Related Person.../a ``Ray'') Hajian (``Hajian'') is the owner and operator of RH International. Hajian pled...

  18. 78 FR 19194 - P&P Computers, 2531 West Maryland Avenue, Tampa, FL 33629; Order Denying Export Privileges

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-29

    ... being that of August 15, 2012 (77 FR 49699 (August 16, 2012)), has continued the Regulations in effect... Bureau of Industry and Security P&P Computers, 2531 West Maryland Avenue, Tampa, FL 33629; Order Denying... Division, P&P Computers (``P&P'') was convicted of violating the International Emergency Economic...

  19. Sediment quality assessment studies of Tampa Bay, Florida

    SciTech Connect

    Carr, R.S.; Chapman, D.C.; Long, E.R.; Thursby, G.; Sloane, G.M.; Wolfe, D.A.

    1996-07-01

    A survey of the toxicity of sediments throughout the Tampa Bay estuary was performed as part of the National Oceanic and Atmospheric Administration`s National Status and Trends Program. The objectives of the survey were to determine the spatial extent and severity of toxicity and to identify relationships between chemical contamination and toxicity. Three independent toxicity tests were performed: a 10-d amphipod survival test of the whole sediments with Ampelisca abdita, a sea urchin fertilization test of sediment pore water with Arbacia punctulata, and a 5-min Microtox{reg_sign} bioluminescence test with solvent extracts of the sediments. Seventy-three percent of the 165 undiluted sediment pore-water samples were significantly toxic in the amphipod tests. The causes of toxicity were not determined. However, concentrations of numerous trace metals, pesticides, polychlorinated biphenyl (PCB) congeners, polycyclic aromatic hydrocarbons (PAHs), and ammonia were highly correlated with pore-water toxicity. Concentrations of many substances, especially total dichlorodiphenyltrichloroethanes (DDTs), endrin, total PCBs, certain PAHs, lead, and zinc, occurred at concentrations in the toxic samples that equaled or exceeded concentrations that have been previously associated with sediment toxicity.

  20. Lessons Learned from the Bay Region Atmospheric Chemistry Experiment (BRACE) and Implications for Nitrogen Management of Tampa Bay

    EPA Science Inventory

    Results from air quality modeling and field measurements made as part of the Bay Region Atmospheric Chemistry Experiment (BRACE) along with related scientific literature were reviewed to provide an improved estimate of atmospheric reactive nitrogen (N) deposition to Tampa Bay, to...

  1. Tidal Mixing Box Submodel for Tampa Bay: Calibration of Tidal Exchange Flows with the Parameter Estimation Tool (PEST)

    EPA Science Inventory

    In the mid-1990s the Tampa Bay Estuary Program proposed a nutrient reduction strategy focused on improving water clarity to promote seagrass expansion within Tampa Bay. A System Dynamics Model is being developed to evaluate spatially and temporally explicit impacts of nutrient r...

  2. Gulf of Mexico Integrated Science - Tampa Bay Study: Watershed and Estuary Mapping

    USGS Publications Warehouse

    Hansen, Mark

    2005-01-01

    Tampa Bay, Florida, and its environs have experienced phenomenal urban growth and significant changes in land-use practices over the past 50 years. This trend is expected to continue, with human activity intensifying and affecting a wider geographic region. Urbanization creates impervious surfaces, which increase stormwater runoff and contribute to greater amounts of chemicals flowing into coastal waters. Man-made structures including bridges, a gas pipeline, desalination plant, ports, navigation channels, and extensive sea walls have been built and will continue to be maintained and modified. This task of the Tampa Bay Study aims to provide a better understanding of these and other man-made impacts on the Tampa Bay region.

  3. Gulf of Mexico Integrated Science - Tampa Bay Study - Characterization of Tidal Wetlands

    USGS Publications Warehouse

    McIvor, Carole

    2005-01-01

    Tidal wetlands in Tampa Bay, Florida, consist of mangrove forests and salt marshes. Wetlands buffer storm surges, provide fish and wildlife habitat, and enhance water quality through the removal of water-borne nutrients and contaminants. Substantial areas of both mangroves and salt marshes have been lost to agricultural, residential, and industrial development in this urban estuary. Wetlands researchers are characterizing the biological components of tidal wetlands and examining the physical factors such as salinity, tidal flushing, and sediment deposition that control the composition of tidal wetland habitats. Wetlands restoration is a priority of resource managers in Tampa Bay. Baseline studies such as these are needed for successful restoration planning and evaluation.

  4. Potential Impacts and Management Implications of Climate Change on Tampa Bay Estuary Critical Coastal Habitats

    NASA Astrophysics Data System (ADS)

    Sherwood, Edward T.; Greening, Holly S.

    2014-02-01

    The Tampa Bay estuary is a unique and valued ecosystem that currently thrives between subtropical and temperate climates along Florida's west-central coast. The watershed is considered urbanized (42 % lands developed); however, a suite of critical coastal habitats still persists. Current management efforts are focused toward restoring the historic balance of these habitat types to a benchmark 1950s period. We have modeled the anticipated changes to a suite of habitats within the Tampa Bay estuary using the sea level affecting marshes model under various sea level rise (SLR) scenarios. Modeled changes to the distribution and coverage of mangrove habitats within the estuary are expected to dominate the overall proportions of future critical coastal habitats. Modeled losses in salt marsh, salt barren, and coastal freshwater wetlands by 2100 will significantly affect the progress achieved in "Restoring the Balance" of these habitat types over recent periods. Future land management and acquisition priorities within the Tampa Bay estuary should consider the impending effects of both continued urbanization within the watershed and climate change. This requires the recognition that: (1) the Tampa Bay estuary is trending towards a mangrove-dominated system; (2) the current management paradigm of "Restoring the Balance" may no longer provide realistic, attainable goals; (3) restoration that creates habitat mosaics will prove more resilient in the future; and (4) establishing subtidal and upslope "refugia" may be a future strategy in this urbanized estuary to allow sensitive habitat types (e.g., seagrass and salt barren) to persist under anticipated climate change and SLR impacts.

  5. 33 CFR 165.703 - Tampa Bay, Florida-Safety Zone.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Tampa Bay, Florida-Safety Zone. 165.703 Section 165.703 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS Specific Regulated Navigation Areas and Limited...

  6. 33 CFR 165.703 - Tampa Bay, Florida-Safety Zone.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... loaded anhydrous ammonia vessel and the width of the channel in the following areas: (1) For inbound tank vessels loaded with anhydrous ammonia, Tampa Bay Cut “F” Channel from Lighted Buoys “3F” and “4F” north... anhydrous ammonia receiving terminals to Port Sutton the safety zone includes, in addition to the area...

  7. Lagrangian particle tracking of a toxic dinoflagellate bloom within the Tampa Bay estuary.

    PubMed

    Havens, Heather; Luther, Mark E; Meyers, Steven D; Heil, Cynthia A

    2010-12-01

    A coastal risk assessment system simulates the basic physical mechanisms underlying contaminant transport in Tampa Bay. This risk assessment system, comprised of a three-dimensional numerical circulation model coupled to a Lagrangian particle tracking model, simulates the transport and dispersion of a toxic dinoflagellate bloom. Instantaneous velocity output from the circulation model drives the movement of particles, each representing a fraction of a K. brevis bloom, within the model grid cells. Hindcast simulations of the spatial distribution of the K. brevis bloom are presented and compared with water sample concentrations collected during the peak of the bloom. Probability calculations, herein called transport quotients, allow for rapid analysis of bay-wide K. brevis transport showing locations most likely to be impacted by the contaminant. Maps constructed from the transport quotients provide managers with a bay-wide snapshot of areas in Tampa Bay most at risk during a hazardous bloom event. PMID:20825953

  8. 33 CFR 110.193 - Tampa Bay, Fla.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... explosives anchorage off Port Tampa. A circular area with a radius of 200 yards with the point at latitude 27... 400 feet west of Cut “D” Channel at a point beginning at latitude 27°54′34″, longitude...

  9. Appearance and water quality of turbidity plumes produced by dredging in Tampa Bay, Florida

    USGS Publications Warehouse

    Goodwin, Carl R.; Michaelis, D.M.

    1984-01-01

    Turbidity plumes in Tampa Bay, Florida, produced during ship-channel dredging operations from February 1977 to August 1978, were monitored in order to document plume appearance and water quality, evaluate plume influence on the characteristics of Tampa Bay water, and provide a data base for comparison with other areas that have similar sediment, dredge, placement, containment, and tide conditions. The plumes investigated originated from the operation of one hopper dredge and three cutterhead-pipeline dredges. Composition of bottom sediment was found to vary from 85 percent sand and shell fragments to 60 percent silt and clay. Placement methods for dredged sediment included beach nourishment, stationary submerged discharge, oscillating surface discharge, and construction of emergent dikes. Tidal currents ranged from slack water to flow velocities of 0.60 meter per second. Plumes were monitored simultaneously by (1) oblique and vertical 35-millimeter aerial photography and (2) water-quality sampling to determine water clarity and concentrations of nutrients, metals, pesticides, and industrial compounds. Forty-nine photographs depict plumes ranging in length from a few tens of meters to several kilometers and ranging in turbidity level from <10 to 200,000 nephelometric turbidity units. The most visible turbidity plumes were produced by surface discharge of material with high sand content into unconfined placement areas during times of strong tidal currents. The least visible turbidity plumes were produced by discharge of material with high silt and clay content into areas enclosed by floating turbidity barriers during times of weak tidal currents. Beach nourishment from hopper-dredge unloading operations also produced plumes of low visibility. Primary turbidity plumes were produced directly by dredging and placement operations; secondary plumes were produced indirectly by resuspension of previously deposited material. Secondary plumes were formed both by erosion, in

  10. Understanding a Century of Change in an Estuary: Tampa Bay. Florida

    NASA Astrophysics Data System (ADS)

    Hearn, C. J.; Yates, K. K.

    2007-05-01

    During the 20th century, Tampa Bay on the west coast of Florida changed from a largely pristine subtropical estuary to a busy waterway with commercial ports and extensive coastal urbanization. The estuary has been physically altered through dredging and construction and its biogeochemical, sedimentary and hydrological balances have been changed. Environmental indicators show that the health of the estuary has been significantly impacted. Long-term restoration and conservation efforts in the next decades will need to be made in the presence of sustained population expansion, increased use of water resources, developments of ports, bay-wide dredging, construction of pipelines, and increased large ship traffic. The Tampa Bay integrated modeling program has helped rationalize, and organize our understanding of the ways that the ecosystem has changed and we have simulated the bay as it was at the ends of the 19th and 20th centuries. This involves submodels of hydrodynamics, hydrology, wave climate, sediment transport, and biogeochemical processes. A key element in this research is the recognition by the USGS Integrated Science Study that estuarine systems function as a dynamic interplay among biologic, geologic, hydrologic, atmospheric, and chemical processes. Integrated modeling also relies heavily on synthesis modeling of historical and modern data for the estuary and the Tampa Bay study has included a major collection program for physical data between 2004 and 2006. An important part of the integrated modeling program has been public outreach including training in the development of submodels by state agencies, universities and community groups. The present paper reviews the Tampa Bay Integrated Coastal Models with conclusions about some of the major anthropogenic impacts. Examples include restoration projects based on the predictions of submodels developed by local agencies for wetland habitats around the Bay and studies by port authorities using submodels of short

  11. Gulf of Mexico Integrated Science - Tampa Bay Study: Examining the Impact of Urbanization on Seafloor Habitats

    USGS Publications Warehouse

    Yates, Kimberly

    2005-01-01

    Seafloor habitats, such as seagrass beds, provide essential habitat for fish and marine mammals. For many years, the study of seagrass vitality has been a priority for scientists and resource managers working in Tampa Bay. Seafloor habitats are extremely sensitive to changes in water quality. Like a canary in a coal mine, seagrass can serve as an ecological indicator of estuary health. Between the 1940s and the 1970s, seagrass gradually died in Tampa Bay. This loss has been attributed to a rise in urbanization and an increase in nutrient loading into the bay. Better treatment of industrial wastewater and runoff beginning in the 1980s resulted in the continuous recovery of seagrass beds. However, in the mid-1990s, the recovery began to level off in areas where good water quality was expected to support continued seagrass recovery, demonstrating that nutrient loading may be only one factor impacting seagrass health. Researchers now are trying to determine what might be affecting the recovery of seagrass in these areas. Currently, little is understood about the effects that other aspects of urbanization and natural change, such as groundwater and sediment quality, might have on seagrass vitality. This segment of the Tampa Bay integrated science study is intended to identify, quantify, and develop models that illustrate the impact that urbanization may have on seafloor habitat distribution, health, and restoration.

  12. Inherent and apparent optical properties of the complex estuarine waters of Tampa Bay: What controls light?

    NASA Astrophysics Data System (ADS)

    Le, Chengfeng; Hu, Chuanmin; English, David; Cannizzaro, Jennifer; Chen, Zhiqiang; Kovach, Charles; Anastasiou, Christopher J.; Zhao, Jun; Carder, Kendall L.

    2013-01-01

    Inherent and apparent optical properties (IOPs and AOPs) of Tampa Bay (Florida, USA) were measured during fourteen cruises between February 1998 and October 2010 to understand how these properties relate to one another and what controls light absorption and diffuse attenuation in this moderately sized (˜1000 km2), shallow estuary (average depth ˜4 m). The IOPs and AOPs included: 1) absorption coefficients of three optically significant constituents: phytoplankton pigments, detrital particles, and colored dissolved organic matter (CDOM); 2) particulate backscattering coefficients; 3) chlorophyll-a concentrations; 4) above-water remote sensing reflectance; 5) downwelling diffuse attenuation coefficients (Kd) at eight wavelengths and photosynthetically active radiation (PAR). Results showed substantial variability in all IOPs and AOPs in both space and time, with most IOPs spanning more than two orders of magnitude and showing strong co-variations. Of all four bay segments, Old Tampa Bay showed unique optical characteristics. During the wet season, the magnitude of blue-green-light absorption was dominated by CDOM, while during the dry season all three constituents contributed significantly. However, the variability in Kd (PAR, 490 nm, 555 nm) was driven mainly by the variability of detrital particles and phytoplankton as opposed to CDOM. This observation explained, at least to first order, why a nutrient reduction management strategy used by the Tampa Bay Estuary Program since the 1990s led to improved water clarity in most of Tampa Bay. The findings of this study provided the optical basis to fine tune existing or develop new algorithms to estimate the various optical water quality parameters from space.

  13. Ecosystem responses to long-term nutrient management in an urban estuary: Tampa Bay, Florida, USA

    NASA Astrophysics Data System (ADS)

    Greening, H.; Janicki, A.; Sherwood, E. T.; Pribble, R.; Johansson, J. O. R.

    2014-12-01

    In subtropical Tampa Bay, Florida, USA, we evaluated restoration trajectories before and after nutrient management strategies were implemented using long-term trends in nutrient loading, water quality, primary production, and seagrass extent. Following citizen demands for action, reduction in wastewater nutrient loading of approximately 90% in the late 1970s lowered external total nitrogen (TN) loading by more than 50% within three years. Continuing nutrient management actions from public and private sectors were associated with a steadily declining TN load rate and with concomitant reduction in chlorophyll-a concentrations and ambient nutrient concentrations since the mid-1980s, despite an increase of more than 1 M people living within the Tampa Bay metropolitan area. Water quality (chlorophyll-a concentration, water clarity as indicated by Secchi disk depth, total nitrogen concentration and dissolved oxygen) and seagrass coverage are approaching conditions observed in the 1950s, before the large increases in human population in the watershed. Following recovery from an extreme weather event in 1997-1998, water clarity increased significantly and seagrass is expanding at a rate significantly different than before the event, suggesting a feedback mechanism as observed in other systems. Key elements supporting the nutrient management strategy and concomitant ecosystem recovery in Tampa Bay include: 1) active community involvement, including agreement about quantifiable restoration goals; 2) regulatory and voluntary reduction in nutrient loadings from point, atmospheric, and nonpoint sources; 3) long-term water quality and seagrass extent monitoring; and 4) a commitment from public and private sectors to work together to attain restoration goals. A shift from a turbid, phytoplankton-based system to a clear water, seagrass-based system that began in the 1980s following comprehensive nutrient loading reductions has resulted in a present-day Tampa Bay which looks and

  14. Tampa Bay as a model estuary for examining the impact of human activities on biogeochemical processes: an introduction

    USGS Publications Warehouse

    Swarzenski, Peter W.; Baskaran, Mark; Henderson, Carl S.; Yates, Kim

    2007-01-01

    Tampa Bay is a shallow, Y-shaped coastal embayment that is located along the center of the Florida Platform – an expansive accumulation of Cretaceous–Tertiary shallow-water carbonates and evaporites that were periodically exposed during glacio–eustatic sea level fluctuations. As a consequence, extensive karstification likely had a controlling impact on the geologic evolution of Tampa Bay. Despite its large aerial size (∼ 1000 km2), Tampa Bay is relatively shallow (mean depth = 4 m) and its watershed (6700 km2) is among the smallest in the Gulf of Mexico. About 85% of all freshwater inflow (mean = 63 m3 s-1) to the bay is carried by four principal tributaries (Orlando et al., 1993). Groundwater makes up an important component of baseflow of these coastal streams and may also be important in delivering nutrients and other constituents to the bay proper by submarine groundwater discharge.

  15. Defining fish nursery habitats: an application of otolith elemental fingerprinting in Tampa Bay, Florida

    USGS Publications Warehouse

    Ley, Janet A.; McIvor, Carole C.; Peebles, Ernst B; Rolls, Holly; Cooper, Suzanne T.

    2009-01-01

    Fishing in Tampa Bay enhances the quality of life of the area's residents and visitors. However, people's desire to settle along the Bay's shorelines and tributaries has been detrimental to the very habitat believed to be crucial to prime target fishery species. Common snook (Centropomus undecimalis) and red drum (Sciaenops ocellatus) are part of the suite of estuarine fishes that 1) are economically or ecologically prominent, and 2) have complex life cycles involving movement between open coastal waters and estuarine nursery habitats, including nursery habitats that are located within upstream, low-salinity portions of the Bay?s tidal tributaries. We are using an emerging microchemical technique -- elemental fingerprinting of fish otoliths -- to determine the degree to which specific estuarine locations contribute to adult fished populations in Tampa Bay. In ongoing monitoring surveys, over 1,000 young-of-the-year common snook and red drum have already been collected from selected Tampa Bay tributaries. Using laser ablation-inductively coupled plasma - mass spectrometry (LA-ICP-MS), we are currently processing a subsample of these archived otoliths to identify location-specific fingerprints based on elemental microchemistry. We will then analyze older fish from the local fishery in order to match them to their probable nursery areas, as defined by young-of-the-year otoliths. We expect to find that some particularly favorable nursery locations contribute disproportionately to the fished population. In contrast, other nursery areas may be degraded, or act as 'sinks', thereby decreasing their contribution to the fish population. Habitat managers can direct strategic efforts to protect any nursery locations that are found to be of prime importance in contributing to adult stocks.

  16. 77 FR 51470 - Drawbridge Operation Regulations; Gulf Intracoastal Waterway, St. Petersburg/Tampa, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-24

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulations; Gulf Intracoastal Waterway, St... bridges in St. Petersburg and Tampa, Florida. The deviations are necessary to allow for the safe... Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and...

  17. Fish and wildlife mitigation options for port development in Tampa Bay: results of a workshop

    USGS Publications Warehouse

    Auble, Gregor T.; Andrews, Austin K.; Hamilton, David B.; Roelle, James E.

    1985-01-01

    This report records the results of a workshop held September 25-27, 1983, in Tampa, Florida. The organization of the report closely follows the organization of the workshop itself. The workshop began with a definition of objectives and several presentations providing general background. The context and objectives of the workshop are covered in the INTRODUCTION. A summary of the results of two group discussions is presented in the WORKSHOP RESULTS section. One group identified ways to conduct or locate port development activities in Tampa Bay so as to lessen their adverse impacts; the other group identified ways to compensate for unavoidable impacts by creating or improving important fish and wildlife habitats. Finally, the DISCUSSION section contains the authors' synthesis of more general comments made throughout the workshop, especially during the closing session.

  18. Detection of turbidity dynamics in Tampa Bay, Florida using multispectral imagery from ERTS-1

    NASA Technical Reports Server (NTRS)

    Coker, A. E.; Higer, A. L.; Goodwin, C. R.

    1973-01-01

    In 1970, Congress authorized the deepening of the Tampa Bay channel (Rivers and Harbors Act of 1970) from 34 to 44 feet. In order to determine the effects of this deepening on circulation, water quality, and biota, during and after the construction, the U.S. Geological Survey, in cooperation with the Tampa Port Authority, has collected data and developed a digital simulation model of the bay. In addition to data collected using conventional tools, use is being made of data collected from ERTS-1. Return beam vidicon (RBV) multispectral data were collected, while a shell dredging barge was operating in the bay, and used for turbidity recognition and unique spectral signatures representative of type and amount of material in suspension. A three-dimensional concept of the dynamics of the plume was achieved by superimposing the parts of the plume recognized in each RBV band. This provides a background for automatic computer processing of ERTS data and three-dimensional modeling of turbidity plumes.

  19. Cease Fire Tampa Bay: a three-tiered approach to firearm injury prevention.

    PubMed

    Kallenborn, J Celeste; Gonzales, Kathie; Crane, Nancy B; Pesce, Karen; Swan, Sherry; Flint, Lewis; Shimberg, Robert

    2004-01-01

    Cease Fire Tampa Bay is a multifaceted, broad-based community effort working to increase awareness of firearm injuries and provide an opportunity for the people of the southwest-central Florida region to eliminate unwanted firearms. Three approaches to develop this program were implemented; a six-county gun buy-back program, firearm safety education for school-aged children and community education programs. The program has been successful in removing 6,981 unwanted guns from the streets, and has reached thousands of children and families in the region. This article describes the development, implementation and evaluation of the program. PMID:16515152

  20. Sediment and Vegetation as Reservoirs of Vibrio vulnificus in the Tampa Bay Estuary and Gulf of Mexico

    PubMed Central

    Chase, Eva; Young, Suzanne

    2015-01-01

    The opportunistic pathogen Vibrio vulnificus occurs naturally in estuarine habitats and is readily cultured from water and oysters under warm conditions but infrequently at ambient conditions of <15°C. The presence of V. vulnificus in other habitats, such as sediments and aquatic vegetation, has been explored much less frequently. This study investigated the ecology of V. vulnificus in water by culture and quantitative PCR (qPCR) and in sediment, oysters, and aquatic vegetation by culture. V. vulnificus samples were taken from five sites around Tampa Bay, FL. Levels determined by qPCR and culture were significantly correlated (P = 0.0006; r = 0.352); however, V. vulnificus was detected significantly more frequently by qPCR (85% of all samples) compared to culture (43%). Culturable V. vulnificus bacteria were recovered most frequently from oyster samples (70%), followed by vegetation and sediment (∼50%) and water (43%). Water temperature, which ranged from 18.5 to 33.4°C, was positively correlated with V. vulnificus concentrations in all matrices but sediments. Salinity, which ranged from 1 to 35 ppt, was negatively correlated with V. vulnificus levels in water and sediments but not in other matrices. Significant interaction effects between matrix and temperature support the hypothesis that temperature affects V. vulnificus concentrations differently in different matrices and that sediment habitats may serve as seasonal reservoirs for V. vulnificus. V. vulnificus levels in vegetation have not been previously measured and reveal an additional habitat for this autochthonous estuarine bacterium. PMID:25636843

  1. Assessments of urban growth in the Tampa Bay watershed using remote sensing data

    USGS Publications Warehouse

    Xian, G.; Crane, M.

    2005-01-01

    Urban development has expanded rapidly in the Tampa Bay area of west-central Florida over the past century. A major effect associated with this population trend is transformation of the landscape from natural cover types to increasingly impervious urban land. This research utilizes an innovative approach for mapping urban extent and its changes through determining impervious surfaces from Landsat satellite remote sensing data. By 2002, areas with subpixel impervious surface greater than 10% accounted for approximately 1800 km2, or 27 percent of the total watershed area. The impervious surface area increases approximately three-fold from 1991 to 2002. The resulting imperviousness data are used with a defined suite of geospatial data sets to simulate historical urban development and predict future urban and suburban extent, density, and growth patterns using SLEUTH model. Also examined is the increasingly important influence that urbanization and its associated imperviousness extent have on the individual drainage basins of the Tampa Bay watershed. ?? 2005 Elsevier Inc. All rights reserved.

  2. Wind generated wave resuspension of sediment in Old Tampa Bay, Florida

    USGS Publications Warehouse

    Schoellhamer, David H.; Levesque, Victor A.

    1991-01-01

    Vertical profiles of velocity and suspended-solids concentration were measured at a scientific instrumentation platform in Old Tampa Bay during the passage of a cold front in March 1990. Strong sustained winds behind the front increased wave activity in the bay, which resulted in resuspension of bottom sediments. The concentration of suspended solids, however, did not correlate with either wave height or mean velocity. A model of wave-current interaction was used to calculate the bottom shear stress, which proved to correlate well with suspended-solids concentration. This analysis shows the importance of considering wave-current interaction when studying sediment resuspension and near-bed transport processes in shallow estuaries.

  3. Sediment Pore Water Ammonium Concentrations in Old Tampa Bay as Determined by the Diffusive Equilibration in Thin Films (DET) Technique

    EPA Science Inventory

    Increased nitrogen loading, associated with rapid human population growth, was thought to be a major driver of Tampa Bay water quality degradation in the decades immediately after the Second World War. Improvements in wastewater treatment in the early 1980s led to marked reductio...

  4. SURVEY OF OYSTERS CRASSOSTREA VIRGINICA FROM TAMPA BAY, FLORIDA: ASSOCIATIONS OF INTERNAL DEFENSE MEASUREMENTS WITH CONTAMINANT BURDENS

    EPA Science Inventory

    Oysters from 16 sites in Tampa Bay, Florida, were collected during a 6-week period in winter 1993 and analyzed for both biological characteristics and tissue chemical concentrations. Using previous sediment contamination and toxicity data, oyster tissues from the selected sites w...

  5. A Siliciclastic-Infilled Sedimentary Basin Within a Large Carbonate Platform, Tampa Bay, Florida

    NASA Astrophysics Data System (ADS)

    Suthard, B. C.; Hine, A. C.; Locker, S. D.; Duncan, D. S.; Morton, R. A.; Hansen, M. E.; Edgar, N. T.

    2002-12-01

    A seismic stratigraphic framework based on over 800 km of seismic reflection data collected within the Tampa Bay estuary and approximately 200 boreholes in and around the estuary shows three separate subsurface regions. In the north-central portion of the bay there is an irregular east-west oriented subsurface trough in the Miocene limestone that reaches depths of 30 m below the seafloor (mbsf). This trough contains steeply dipping clinoforms that indicate it has been filled from the south and east and borehole data show that these clinoforms are siliciclastic sediments. South of the trough in the center of Tampa Bay there is a broad carbonate bedrock high. This area is characterized by less than two meters of siliciclastic sediment cover as well as small-scale shallow karst features (10's m in width and up to 10 m in relief). In the southern portion of the Bay the seismic reflection data shows the Miocene limestone has large-scale warping as well as larger-scale karst features (100's m in width and 30+ m in relief) creating another deep basin (up to 40 mbsf) that has been filled by siliciclastics from the south and the east. The sedimentary basin underlying the modern estuary reveals that accommodation space can form within the center of large carbonate platforms and that this accommodation space may be filled by remobilized siliciclastics. Based upon the age of the underlying limestones, and recent work in south Florida by others, we propose that the Tampa Basin was filled during multiple Late Neogene and Quaternary sea-level fluctuations. Additionally, we speculate that the observed multiple buried sinkholes, and sag-and-warp deformation indicate spatially selective subsurface collapse probably initiated by deep-seated dissolution produced by karst processes. Overlying stratigraphic units subsided as a result of solution collapse, creating a surficial topographic low. This surficial basin may have controlled subsequent non-marine, estuarine and even open marine

  6. Submarine groundwater discharge to Tampa Bay: nutrient fluxes and biogeochemistry of the coastal aquifer

    USGS Publications Warehouse

    Kroeger, Kevin D.; Swarzenski, Peter W.; Greenwood, Wm. Jason; Reich, Christopher

    2007-01-01

    To separately quantify the roles of fresh and saline submarine groundwater discharge (SGD), relative to that of rivers, in transporting nutrients to Tampa Bay, Florida, we used three approaches (Darcy's Law calculations, a watershed water budget, and a 222Rn mass-balance) to estimate rate of SGD from the Pinellas peninsula. Groundwater samples were collected in 69 locations in the coastal aquifer to examine biogeochemical conditions, nutrient concentrations and stoichiometry, and salinity structure. Salinity structure was also examined using stationary electrical resistivity measurements. The coastal aquifer along the Pinellas peninsula was chemically reducing in all locations sampled, and that condition influences nitrogen (N) form and mobility of N and PO43−. Concentrations of NH4+, PO43− and ratio of dissolved inorganic N (DIN) to PO43− were all related to measured oxidation/reduction potential (pε) of the groundwater. Ratio of DIN: PO43− was below Redfield ratio in both fresh and saline groundwater. Nitrogen occurred almost exclusively in reduced forms, NH4+ and dissolved organic nitrogen (DON), suggesting that anthropogenic N is exported from the watershed in those forms. In comparison to other SGD studies, rate of PO43− flux in the seepage zone (μM m− 2 d− 1) in Tampa Bay was higher than previous estimates, likely due to 1) high watershed population density, 2) chemically reducing conditions, and 3) high ion concentrations in fresh groundwater. Estimates of freshwater groundwater flux indicate that the ratio of groundwater discharge to stream flow is ∼ 20 to 50%, and that the magnitudes of both the total dissolved nitrogen and PO43− loads due to fresh SGD are ∼ 40 to 100% of loads carried by streams. Estimates of SGD based on radon inventories in near-shore waters were 2 to 5 times greater than the estimates of freshwater groundwater discharge, suggesting that brackish and saline SGD is also an important process in Tampa Bay and results

  7. Orlando, FL, USA

    NASA Technical Reports Server (NTRS)

    1973-01-01

    This color infrared photo of the Orlando, FL area (28.5N,81.5W) shows the extensive citrus tree orchards as neat bright red field patterns. The extensive road and highway network in the central Florida region is clearly visible. Also, the recent urban growth caused by the opening of the Disney World amusement complex just southwest of Orlando is clearly evident. This view spans the width of the state from Tampa Bay to the Atlantic coast.

  8. 33 CFR 100.718 - Annual Suncoast Kilo Run; Sarasota Bay, Sarasota, FL.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Annual Suncoast Kilo Run; Sarasota Bay, Sarasota, FL. 100.718 Section 100.718 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... Suncoast Kilo Run; Sarasota Bay, Sarasota, FL. (a) Regulated area. The regulated area is established...

  9. 33 CFR 100.718 - Annual Suncoast Kilo Run; Sarasota Bay, Sarasota, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Annual Suncoast Kilo Run; Sarasota Bay, Sarasota, FL. 100.718 Section 100.718 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... Suncoast Kilo Run; Sarasota Bay, Sarasota, FL. (a) Regulated area. The regulated area is established...

  10. 33 CFR 100.718 - Annual Suncoast Kilo Run; Sarasota Bay, Sarasota, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Annual Suncoast Kilo Run; Sarasota Bay, Sarasota, FL. 100.718 Section 100.718 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... Suncoast Kilo Run; Sarasota Bay, Sarasota, FL. (a) Regulated area. The regulated area is established...

  11. 33 CFR 100.718 - Annual Suncoast Kilo Run; Sarasota Bay, Sarasota, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Annual Suncoast Kilo Run; Sarasota Bay, Sarasota, FL. 100.718 Section 100.718 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... Suncoast Kilo Run; Sarasota Bay, Sarasota, FL. (a) Regulated area. The regulated area is established...

  12. 33 CFR 100.718 - Annual Suncoast Kilo Run; Sarasota Bay, Sarasota, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Annual Suncoast Kilo Run; Sarasota Bay, Sarasota, FL. 100.718 Section 100.718 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... Suncoast Kilo Run; Sarasota Bay, Sarasota, FL. (a) Regulated area. The regulated area is established...

  13. A severe red tide (Tampa Bay, 2005) causes an anomalous decrease in biological sound

    PubMed Central

    Indeck, Katherine L.; Simard, Peter; Gowans, Shannon; Lowerre-Barbieri, Susan; Mann, David A.

    2015-01-01

    Although harmful algal blooms (HABs) are known to cause morbidity and mortality in marine organisms, their sublethal effects are poorly understood. The purpose of this study was to compare ambient noise levels during a severe HAB event in Tampa Bay, Florida, to those during non-HAB periods. Passive acoustic monitoring was conducted using bottom-mounted autonomous acoustic recorders during a severe HAB in summer 2005, and in summers 2006, 2011 and 2012 (non-severe HAB years). Ambient noise levels were significantly higher during the non-HAB years due to an abundance of snapping shrimp (Alpheidae) sounds and fish chorusing. The difference of sound intensity between the study years is most likely attributable to effects of the HAB on the abundance and/or behaviour of fish and snapping shrimp as a result of mortality and stress-induced behavioural modifications. PMID:26473055

  14. A severe red tide (Tampa Bay, 2005) causes an anomalous decrease in biological sound.

    PubMed

    Indeck, Katherine L; Simard, Peter; Gowans, Shannon; Lowerre-Barbieri, Susan; Mann, David A

    2015-09-01

    Although harmful algal blooms (HABs) are known to cause morbidity and mortality in marine organisms, their sublethal effects are poorly understood. The purpose of this study was to compare ambient noise levels during a severe HAB event in Tampa Bay, Florida, to those during non-HAB periods. Passive acoustic monitoring was conducted using bottom-mounted autonomous acoustic recorders during a severe HAB in summer 2005, and in summers 2006, 2011 and 2012 (non-severe HAB years). Ambient noise levels were significantly higher during the non-HAB years due to an abundance of snapping shrimp (Alpheidae) sounds and fish chorusing. The difference of sound intensity between the study years is most likely attributable to effects of the HAB on the abundance and/or behaviour of fish and snapping shrimp as a result of mortality and stress-induced behavioural modifications. PMID:26473055

  15. Health assessment for Bay Drums, Tampa, Florida, Region 4. CERCLIS No. FLD088783865. Preliminary report

    SciTech Connect

    Not Available

    1989-07-17

    The Bay Drum's Site (BDS) is listed on the National Priorities List. The 10-acre site, an inactive recycling operation, is located adjacent to two NPL sites in Tampa (Hillsborough County), Florida. Three unlined holding ponds on-site contained various organic solvents and pesticide residues. Preliminary on-site surface water sampling results have identified various volatile organic compounds. They include 1,2-dichloroethene, 4-methyl phenol, ethyl ether, acetone, and unspecific chromium. Groundwater sampling results identified toluene, vinyl chloride, and 1,1-dichloroethene. Sediment sampling results identified chlordane, vinyl chloride, chromium, lead, and cobalt. Soil sampling results identified polychlorinated biphenyls and ethyl ether. Based on available information, the site is considered to be of potential public health concern because of the risk to human health caused by the possibility of human exposure to hazardous substances.

  16. Improved apportionment of ambient PM constituents to sources in Tampa, FL, with pseudo-deterministic receptor model-II.

    PubMed

    Beachley, Gregory M; Ondov, John M

    2013-03-15

    In 2005, Park et al. developed a new Pseudo-Deterministic Receptor Model (PDRM) to apportion SO2 and ambient particulate matter (PM) constituents to local sources near Tampa Bay. Ambient pollutant measurements were fit to products of emission rates and dispersion factors constrained with a Gaussian Plume Model for individual sources. Although highly successful, ambient pollutant concentrations were affected by numerous contributing sources at a variety of distances and trajectories were complicated by shifting winds. In this work, we expanded the data set, modified the basic bilinear Gaussian filter equation to constrain solutions based on composition and temporal profiles of key marker species, and implemented a hierarchical approach to applying constraints in order of most-to-least stringent. To account for shifting winds and differing transport times for ground and elevated components of plumes from distant sources, a multiple-height trajectory method was implemented. These changes allowed the number of unknowns to be expanded, such that temporal profiles of the Gaussian dispersion terms could also be extracted from the data. Fits for all species were substantially improved, as was agreement with literature sources for both emission rates and source-particle compositions. PMID:22954420

  17. Development of a seamless multisource topographic/bathymetric elevation model of Tampa Bay

    USGS Publications Warehouse

    Gesch, D.; Wilson, R.

    2001-01-01

    Many applications of geospatial data in coastal environments require knowledge of the nearshore topography and bathymetry. However, because existing topographic and bathymetric data have been collected independently for different purposes, it has been difficult to use them together at the land/water interface owing to differences in format, projection, resolution, accuracy, and datums. As a first step toward solving the problems of integrating diverse coastal datasets, the U.S. Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA) are collaborating on a joint demonstration project to merge their data for the Tampa Bay region of Florida. The best available topographic and bathymetric data were extracted from the USGS National Elevation Dataset and the NOAA hydrographic survey database, respectively. Before being merged, the topographic and bathymetric datasets were processed with standard geographic information system tools to place them in a common horizontal reference frame. Also, a key part of the preprocessing was transformation to a common vertical reference through the use of VDatum, a new tool created by NOAA's National Geodetic Survey for vertical datum conversions. The final merged product is a seamless topographic/bathymetric model covering the Tampa Bay region at a grid spacing of 1 arc-second. Topographic LIDAR data were processed and merged with the bathymetry to demonstrate the incorporation of recent third party data sources for several test areas. A primary application of a merged topographic/bathymetric elevation model is for user-defined shoreline delineation, in which the user decides on the tidal condition (for example, low or high water) to be superimposed on the elevation data to determine the spatial position of the water line. Such a use of merged topographic/bathymetric data could lead to the development of a shoreline zone, which could reduce redundant mapping efforts by federal, state, and local agencies

  18. Using Remote Sensing Data to Evaluate Habitat Loss in the Mobile, Galveston, and Tampa Bay Watersheds

    NASA Technical Reports Server (NTRS)

    Steffen, Morgan; Estes, Maurice G.; Al-Hamdan, Mohammad

    2010-01-01

    The Gulf of Mexico has experienced dramatic wetland habitat area losses over the last two centuries. These losses not only damage species diversity, but contribute to water quality, flood control, and aspects of the Gulf coast economy. Overall wetland losses since the 1950s were examined using land cover/land use (LCLU) change analysis in three Gulf coast watershed regions: Mobile Bay, Galveston Bay, and Tampa Bay. Two primary causes of this loss, LCLU change and climate change, were then assessed using LCLU maps, U.S. census population data, and available current and historical climate data from NOAA. Sea level rise, precipitation, and temperature effects were addressed, with emphasis on analysis of the effects of sea level rise on salt marsh degradation. Ecological impacts of wetland loss, including fishery depletion, eutrophication, and hypoxia were addressed using existing literature and data available from NOAA. These ecological consequences in turn have had an affect on the Gulf coast economy, which was analyzed using fishery data and addressing public health impacts of changes in the environment caused by wetland habitat loss. While recent federal and state efforts to reduce wetland habitat loss have been relatively successful, this study implies a need for more aggressive action in the Gulf coast area, as the effects of wetland loss reach far beyond individual wetland systems themselves to the Gulf of Mexico as a whole.

  19. A landscape based, systems dynamic model for assessing impacts of urban development on water quality for sustainable seagrass growth in Tampa Bay, Florida

    EPA Science Inventory

    We present an integrated assessment model to predict potential unintended consequences of urban development on the sustainability of seagrasses and preservation of ecosystem services, such as catchable fish, in Tampa Bay. Ecosystem services are those ecological functions and pro...

  20. Contaminant profiles for surface water, sediment, flora and fauna associated with the mangrove fringe along middle and lower East Tampa Bay

    EPA Science Inventory

    Contaminant concentrations are reported for surface water, sediment, seagrass, mangroves, Florida Crown conch, blue crabs and fish collected during 2010-2011 from the mangrove fringe along eastern Tampa Bay. Concentrations of trace metals, chlorinated pesticides, atrazine, total ...

  1. Potential Relationships Between Urban Development and the Trophic Status of Tampa Bay Tributaries and Lake Thonotosassa, Further the Potential Effect on Public Health

    NASA Technical Reports Server (NTRS)

    MorenoMadrinan, Max J.; Allhamdan, Mohammad; Rickman, Douglas L.; Estes, Maury

    2010-01-01

    This slide presentation reviews the use of remote sensing to monitor the relationships between the urban development and water quality in Tampa Bay and the tributaries. It examines the changes in land cover/land use (LU/LC) and the affects that this change has on the water quality of Tampa Bay, Lake Thonotosassa and the tributaries, and that shows the ways that these changes can be estimated with remote sensing.

  2. Evaluation of organic geochemical and micropaleontological proxies for Holocene paleoclimate reconstructions in Tampa Bay, Florida

    NASA Astrophysics Data System (ADS)

    van Soelen, E. E.; Brooks, G.; Lammertsma, E.; Donders, T.; Wagner-Cremer, F.; Sangiorgi, F.; Cremer, H.; Sinninghe Damsté, J. S.; Reichart, G. J.

    2009-04-01

    The exact consequences of human induced climate change are as yet not known. One of the current debates concerns the relation between rising sea surface temperatures (SST) and enhanced hurricane activity. It has also been suggested that the El Niño Southern Oscillation (ENSO) variability plays a major role in providing favorable circumstances for hurricane development. Paleo-climate reconstructions can help understanding long-term trends in hurricane activity. However, reliable climate reconstructions first require that suitable proxies are developed and tested. For this purpose, a pilot-study was performed using biomarkers, pollen, dinoflagellates and diatoms in a core from Tampa-Bay, Florida, covering the Holocene. The hydrological cycle in this part of Florida is strongly affected by both ENSO [1] and hurricanes. Biomarkers of both terrestrial and marine origin were abundant in the core sediments. High taraxerol concentrations were found which are characteristic for the close proximity of mangrove forests on the bays fringes. Other vascular plant derived biomarkers include friedelanone and β-sitosterol. Marine biomarkers include amongst others dinosterol and long-chain C37 and C38 alkenones, indicative for dinoflagellates and haptophyte algae respectively. These biomarkers are absent in sediments older than 7 kyr BP, indicating a non-marine depositional environment. In sediments younger than 7 kyr BP, increasing amounts of marine biomarkers indicate a transition towards estuarine conditions. SST was reconstructed on the alkenones-based paleothermometer Uk'37 and indicates temperatures of ~ 26°C for the past ~4 kyr. Between 7 and 4 kyr BP, concentrations of alkenones in the sediments are too low for reliable SST reconstructions. The shift towards estuarine conditions is a consequence of rising sea-levels following the last deglaciation and is in agreement with earlier findings by Cronin et al. [2], who recognized a change from lacustrine to marine sediments

  3. Geochronology of a rich early Pleistocene vertebrate fauna, Leisey Shell Pit, Tampa Bay, Florida

    NASA Astrophysics Data System (ADS)

    Webb, S. D.; Morgan, G. S.; Hulbert, R. C.; Jones, D. S.; MacFadden, B. J.; Mueller, P. A.

    1989-07-01

    Leisey Shell Pit, on the southeastern edge of Tampa Bay, has produced the largest early Pleistocene vertebrate fauna in North America, consisting of about 30,000 cataloged specimens. The predominantly terrestrial and freshwater vertebrate fauna was transported into an estuarine environment during a regressive phase in an otherwise marine, bay-bottom sequence of sandy shell beds. The biochronological age of the Leisey Shell Pit local fauna is late Sappan (or late early Irvingtonian) based on the presence of such mammalian species as Mammuthus meridionalis and Smilodon gracilis, the absence of any Blancan holdovers, and early records of Lutra, Nothrotheriops, Palaeolama, and a new small glyptodont. Magnetostratigraphy indicates that the entire Pleistocene section at Leisey is reversed and thus presumably accumulated in the post-Olduvai part of the Matuyama Magnetochron (i.e., 1.66 myr or younger). Strontium isotope ratios ( {87Sr }/{86Sr }) sampled from aragonitic bivalve shells ( Chione cancellata) trend higher with increasing height in the section, yielding a mean age estimate for the two major bone beds of 1.7 ± 0.35 myr. In combination, these three geochronologic methods provide a high-resolution approach toward age determination and delimit the age of Leisey Shell Pit local fauna as between 1.66 and 1.4 myr.

  4. BENTHIC-PELAGIC PROCESSES IN PENSACOLA BAY, FL: EFFECTS OF LIGHT ON OXYGEN FLUXES

    EPA Science Inventory

    Eutrophication caused by excess nutrients can exacerbate hypoxia by increasing bottom water and sediment respiration. However, in shallow sub-tropical estuaries, the euphotic zone often extends below the pycnocline allowing oxygen fluxes in Pensacola Bay, FL, USA. Measurements we...

  5. Albino mutation rates in red mangroves (Rhizophora mangle L.) as a bioassay of contamination history in Tampa Bay, Florida, USA

    USGS Publications Warehouse

    Proffitt, C.E.; Travis, S.E.

    2005-01-01

    We assessed the sensitivity of a viviparous estuarine tree species, Rhizophora mangle, to historic sublethal mutagenic stress across a fine spatial scale by comparing the frequency of trees producing albino propagules in historically contaminated (n=4) and uncontaminated (n=11) forests in Tampa Bay, Florida, USA. Data from uncontaminated forests were used to provide estimates of background mutation rates. We also determined whether other fitness parameters were negatively correlated with mutagenic stress (e.g., degree of outcrossing and numbers of reproducing trees km-1). Contaminated sites in Tampa Bay had significantly higher frequencies of trees that were heterozygous for albinism per 1000 total reproducing trees (FHT) than uncontaminated forests (mean ?? SE: 11.4 ?? 4.3 vs 4.3 ?? 0.73, P 25 yrs of subsequent recruitment and tree replacement may have allowed an initial elevation in the FHT to decay. Patterns of FHT were not explained by distance from the bay mouth or the degree of urbanization. However, there was a significant positive relationship between tree size and FHT (r=0.83, P<0.018), which suggests that forests with older or larger trees provide a more lasting record of cumulative mutagenic stress. No other fitness parameters correlated with FHT. There was a difference in FHT between two latitudes, as determined by comparing Tampa Bay with literature values for Puerto Rico. The sensitivity of this bioassay for the effects of mutagens will facilitate future monitoring of contamination events and comparisons of bay-wide recovery in future decades. Development of a database of FHT values for a range of subtropical and tropical estuaries is underway that will provide a baseline against which to compare mutational consequences of global change. ?? 2005, The Society of Wetland Scientists.

  6. BACTERIOPLANKTON DYNAMICS IN PENSACOLA BAY, FL, USA: ROLE OF PHYTOPLANKTON AND DETRIAL CARBON SOURCES

    EPA Science Inventory

    Bacterioplankton Dynamics in Pensacola Bay, FL, USA: Role of Phytoplankton and Detrital Carbon Sources (Abstract). To be presented at the16th Biennial Conference of the Estuarine Research Foundation, ERF 2001: An Estuarine Odyssey, 4-8 November 2001, St. Pete Beach, FL. 1 p. (ER...

  7. SUBMERGED AQUATIC VEGETATION MONITORING IN ESCAMBIA-PENSACOLA BAY SYSTEM, FL ERF 2001

    EPA Science Inventory

    Submerged Aquatic Vegetation Monitoring in Escambia-Pensacola Bay System, FL (Abstract). To be presented at the16th Biennial Conference of the Estuarine Research Foundation, ERF 2001: An Estuarine Odyssey, 4-8 November 2001, St. Pete Beach, FL. 1 p. (ERL,GB R850).

    Submerg...

  8. Associations Between Ultrafine Particles and Co-Pollutant Concentrations in the Tampa Bay Area.

    PubMed

    Desai, Ushang; Watson, Alain

    2016-05-01

    Ultrafine particles (UFPs) are ubiquitous in urban air and have been recognized as a risk to human health. The aim of this study was to measure the relationships among ultrafine particles and other ambient air pollutants and meteorological factors in the Tampa Bay Area. This study measured continuous UFPs, black carbon, oxides of nitrogen (NO(x)), nitrogen dioxide (NO2), nitric oxide (NO), carbon monoxide (CO), ozone (O3), sulfur dioxide (SO2), particulate matter having an aerodynamic diameter of 10 microns or less (PM10), relative humidity, wind speed, and ambient temperature during January to March 2014. Moreover, the study compared the relationship between UFPs and various co-pollutants daily, including during morning rush hour periods. This study found a moderate correlation among UFPs and black carbon, NO(x), NO2, and NO during hourly continuous measurements and rush hour periods, and a low level of correlation among UFPs and CO, O3, SO2, PM10, relative humidity, wind speed, and ambient temperature. This study indicates that co-pollutants should not be used as a surrogate to assess the human health risk from ultrafine particles exposure. PMID:27263179

  9. Remote sensing of water quality in Tampa Bay: from research to management decision support

    NASA Astrophysics Data System (ADS)

    Hu, C.; Le, C.; Cannizzaro, J.; English, D. C.; Kovach, C.

    2013-12-01

    Remote sensing of water quality in estuaries has been problematic in the past due to optical complexity of estuarine waters and uncertainties of atmospheric correction. Here, using Tampa Bay (about 1000 km2 with mean bottom depth of 4 m) as a case study, we report our recent progress in algorithm development and application of satellite data products for management decision support. We use data from the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) to derive validated data products of water column chlorophyll-a concentrations (Chl-a in mg m-3), diffuse attenuation coefficient at 490 nm (Kd490 in m-1), and absorption coefficient of colored dissolved organic matter (CDOM) at 443 nm (ag443 in m-1) for large dynamic ranges. These are derived using customized algorithms and validated using extensive field data collected between 1998 and 2010. The algorithms combine the advantage of both empirical and semi-analytical approaches, and use green and red wavelengths to avoid problems in the blue wavelengths due to imperfect atmospheric correction. The long-term products from 1998 to 2012 are used to develop a satellite-based water quality decision matrix (WQDM) to help make management decisions. Further, time series data are extracted routinely from several pre-defined stations and then provided to the general public on a customized web site through a virtual buoy system (VBS).

  10. An analysis of urban development and its environmental impact on the Tampa Bay watershed

    USGS Publications Warehouse

    Xian, G.; Crane, M.; Su, J.

    2007-01-01

    Urbanization has transformed natural landscapes into anthropogenic impervious surfaces. Urban land use has become a major driving force for land cover and land use change in the Tampa Bay watershed of west-central Florida. This study investigates urban land use change and its impact on the watershed. The spatial and temporal changes, as well as the development density of urban land use are determined by analyzing the impervious surface distribution using Landsat satellite imagery. Population distribution and density are extracted from the 2000 census data. Non-point source pollution parameters used for measuring water quality are analyzed for the sub-drainage basins of Hillsborough County. The relationships between 2002 urban land use, population distribution and their environmental influences are explored using regression analysis against various non-point source pollutant loadings in these sub-drainage basins. The results suggest that strong associations existed between most pollutant loadings and the extent of impervious surface within each sub-drainage basin in 2002. Population density also exhibits apparent correlations with loading rates of several pollutants. Spatial variations of selected non-point source pollutant loadings are also assessed. ?? 2006 Elsevier Ltd. All rights reserved.

  11. Discharge, water-quality characteristics, and nutrient loads from McKay Bay, Delaney Creek, and East Bay, Tampa, Florida, 1991-1993

    USGS Publications Warehouse

    Stoker, Y.E.; Levesque, V.A.; Fritz, E.M.

    1996-01-01

    Nutrient enrichment in Tampa Bay has caused a decline in water quality in the estuary. Efforts to reduce the nutrient loading to Tampa Bay have resulted in improvement in water quality from 1981 to 1991. However, Tampa Bay still is onsidered enriched with nutrients. Water quality in East Bay (located at the northeastern part of Hillsborough Bay, which is an embayment in Tampa Bay) is not improving at the same rate as the rest of the bay. East Bay is the center of shipping activity in Tampa Bay and the seventh largest port in the United States. One of the primary cargoes is phosphate ore and related products such as fertilizer. The potential for nutrient loading to East Bay from shipping activities is high and has not previously been measured. Nitrogen and phosphorus loads from East Bay to Hillsborough Bay were measured during selected time periods during June 1992 through May 1993; these data were used to estimate seasonal and annual loads. These loads were evaluated to determine whether the loss of fertilizer products from shipping activities resulted in increased nutrient loading to Hillsborough Bay. Discharge was measured, and water-quality samples were collected at the head of East Bay (exiting McKay Bay), and at the mouth of East Bay. Discharge and nitrogen and phosphorus concentrations for the period June 1992 through May 1993 were used to compute loads. Discharges from McKay Bay, Delaney Creek, and East Bay are highly variable because of the effect of tide. Flow patterns during discharge measurements generally were unidirectional in McKay Bay and Delaney Creek, but more complex, bidirectional patterns were observed at the mouth of East Bay. Tidally affected discharge data were digitally filtered with the Godin filter to remove the effects of tide so that residual, or net, discharge could be determined. Daily mean discharge from McKay Bay ranged from -1,900 to 2,420 cubic feet per second; from Delaney Creek, -3.8 to 162 cubic feet per second; and from East

  12. Development, Evaluation, and Application of Sediment Quality Targets for Assessing and Managing Contaminated Sediments in Tampa Bay, Florida

    USGS Publications Warehouse

    MacDonald, D.D.; Carr, R.S.; Eckenrod, D.; Greening, H.; Grabe, S.; Ingersoll, C.G.; Janicki, S.; Janicki, T.; Lindskoog, R.A.; Long, E.R.; Pribble, R.; Sloane, G.; Smorong, D.E.

    2004-01-01

    Tampa Bay is a large, urban estuary that is located in west central Florida. Although water quality conditions represent an important concern in this estuary, information from numerous sources indicates that sediment contamination also has the potential to adversely affect aquatic organisms, aquatic-dependent wildlife, and human health. As such, protecting relatively uncontaminated areas of the bay from contamination and reducing the amount of toxic chemicals in contaminated sediments have been identified as high-priority sediment management objectives for Tampa Bay. To address concerns related to sediment contamination in the bay, an ecosystem-based framework for assessing and managing sediment quality conditions was developed that included identification of sediment quality issues and concerns, development of ecosystem goals and objectives, selection of ecosystem health indicators, establishment of metrics and targets for key indicators, and incorporation of key indicators, metrics, and targets into watershed management plans and decision-making processes. This paper describes the process that was used to select and evaluate numerical sediment quality targets (SQTs) for assessing and managing contaminated sediments. These SQTs included measures of sediment chemistry, whole-sediment and pore-water toxicity, and benthic invertebrate community structure. In addition, the paper describes how the SQTs were used to develop site-specific concentration-response models that describe how the frequency of adverse biological effects changes with increasing concentrations of chemicals of potential concern. Finally, a key application of the SQTs for defining sediment management areas is discussed.

  13. Historical contamination of PAHs, PCBs, DDTs, and heavy metals in Mississippi River Delta, Galveston Bay and Tampa Bay sediment cores.

    PubMed

    Santschi, P H; Presley, B J; Wade, T L; Garcia-Romero, B; Baskaran, M

    2001-07-01

    Profiles of trace contaminant concentrations in sediment columns can be a natural archive from which pollutant inputs into coastal areas can be reconstructed. Reconstruction of historical inputs of anthropogenic chemicals is important for improving management strategies and evaluating the success of recent pollution controls measures. Here we report a reconstruction of historical contamination into three coastal sites along the US Gulf Coast: Mississippi River Delta, Galveston Bay and Tampa Bay. Within the watersheds of these areas are extensive agricultural lands as well as more than 50% of the chemical and refinery capacity of the USA. Despite this pollution potential, relatively low concentrations of trace metals and trace organic contaminants were found in one core from each of the three sites. Concentrations and fluxes of most trace metals found in surface sediments at these three sites, when normalized to Al, are typical for uncontaminated Gulf Coast sediments. Hydrophobic trace organic contaminants that are anthropogenic (polycyclic aromatic hydrocarbons, DDTs, and polychlorinated biphenyls) are found in sediments from all locations. The presence in surface sediments from the Mississippi River Delta of low level trace contaminants such as DDTs, which were banned in the early 1970's, indicate that they are still washed out from cultivated soils. It appears that the DDTs profile in that sediment core was produced by a combination of erosion processes of riverine and other sedimentary deposits during floods. Most of the pollutant profiles indicate that present-day conditions have improved from the more contaminated conditions in the 1950-1970's, before the advent of the Clean Water Act. PMID:11488356

  14. Hysteresis of the Annual Exchange Circulation in the Tampa Bay Estuary

    NASA Astrophysics Data System (ADS)

    Meyers, S. D.; Wilson, M.; Luther, M. E.

    2014-12-01

    A nonlinear relation between the salinity field and the subtidal exchange circulation in the Tampa Bay estuary is demonstrated using 1999-2011 measurements of river discharge, salinity and velocity. These data are binned and averaged to form mean monthly values of freshwater input Q, axial (vertical) salinity gradient ΔS (ΔzS), and subtidal vertical shear σ, respectively. These interrelated quantities are found to cycle through three dynamical regimes. The first regime (January to May/June) is a vertically well-mixed state (ΔzS≈0) when Q is low and a complex relation between ΔS and σ occurs. This time period has high ΔzS with an estimated gradient Richardson number Ri ~0.25. A value of Ri > 0.25 is usually stably stratified. Regimes II and III are both partially mixed states and both show a near-linear relation σ=cΔS+c0. Regime II (July-Sept) is characterized by rapidly increasing Q, high ΔS, c=-0.053 km psu-1s-1 and Ri~0.6. The third regime (Oct-Dec) has low Q, and includes high to minimal ΔS, relatively high ΔS, c=-0.011 km psu-1s-1 and Ri ~0.4. This asymmetric annual cycle generates hysteresis in the exchange circulation relative to the axial salinity gradient where σ is multi-valued with regard to ΔS, forming a loop in state space. The loop forms because the σ developed during II persists through III even when the original source of its formation (ΔS) has declined to minimal levels. We hypothesize this large Richardson number during III suppresses vertical mixing of momentum and allows the exchange circulation to maintain higher values.

  15. Mapping Porewater Salinity with Electromagnetic Methods in Shallow Coastal Environments: Tampa Bay, Florida

    NASA Astrophysics Data System (ADS)

    Greenwood, W. J.; Kruse, S. E.; Swarzenski, P. W.; Meunier, J. K.

    2004-05-01

    The feasibility of predicting porewater salinity based on surface electromagnetic and resistivity methods was assessed in the shallow coastal waters and wetlands of Tampa Bay, Florida. The most successful method combined an initial core or surface resistivity measurement with pore water samples in order to determine formation factors in the shallow marine sediment. Data were collected over broader areas of interest using Geonics, Inc. EM-31 and EM-34 electromagnetic instruments and the Advanced Geosciences, Inc. SuperSting R8 marine resistivity instrument. To map coastal porewater conductivities, the EM instruments were adapted for use in shallow marine waters (<1 meter). In such high-conductivity environments, interpretation of EM readings requires processing with layered models of terrain conductivity that include direct sampling data. Typically, nearby marine resistivity readings are necessary to distinguish between equivalent EM model solutions. Porewater conductivities estimated from the layered EM models and the resistivity-derived formation factors show very good agreement with measured pore water conductivities. The use of EM systems in very shallow waters has potential application in locating prospective submarine groundwater discharge in areas that are difficult to reach with conventional towed marine resistivity arrays. Electromagnetic and direct sampling data show that salt exclusion by mangroves significantly increases pore water conductivities, and hence terrain conductivity readings within 10m of a mangrove shoreline. Terrain conductivities fall off to background values within 15m of the mangrove shoreline. The marine EM-31 measurements were effective at sensing the magnitude and lateral extent of high and low salinity porewaters within wetlands and mangrove lined ditches and ponds, which may be useful for interdisciplinary studies of coastal ecosystems.

  16. Exploring the nutrient inputs and cycles in Tampa Bay and coastal watersheds using MODIS images and data mining

    NASA Astrophysics Data System (ADS)

    Chang, Ni-Bin; Xuan, Zhemin

    2011-09-01

    Excessive nutrients, which may be represented as Total Nitrogen (TN) and Total Phosphorus (TP) levels, in natural water systems have proven to cause high levels of algae production. The process of phytoplankton growth which consumes the excess TN and TP in a water body can also be related to the changing water quality levels, such as Dissolved Oxygen (DO), chlorophyll-a, and turbidity, associated with their changes in absorbance of natural radiation. This paper explores spatiotemporal nutrient patterns in Tampa Bay, Florida with the aid of Moderate Resolution Imaging Spectroradiometer or MODIS images and Genetic Programming (GP) models that are deigned to link those relevant water quality parameters in aquatic environments.

  17. Validation of MODIS FLH and In Situ Chlorophyll a from Tampa Bay, Florida (USA)

    NASA Technical Reports Server (NTRS)

    Fischer, Andrew; MorenoMadrinan, Max J.

    2012-01-01

    Satellite observation of phytoplankton concentration or chlorophyll-a (chla) is an important characteristic, critically integral to monitoring coastal water quality. However, the optical properties of estuarine and coastal waters are highly variable and complex and pose a great challenge for accurate analysis. Constituents such as suspended solids and dissolved organic matter and the overlapping and uncorrelated absorptions in the blue region of the spectrum renders the blue-green ratio algorithms for estimating chl-a inaccurate. Measurement of suninduced chlorophyll fluorescence, on the other hand, which utilizes the near infrared portion of the electromagnetic spectrum may, provide a better estimate of phytoplankton concentrations. While modelling and laboratory studies have illustrated both the utility and limitations of satellite algorithms based on the sun induced chlorophyll fluorescence signal, few have examined the empirical validity of these algorithms or compared their accuracy against bluegreen ratio algorithms . In an unprecedented analysis using a long term (2003-2011) in situ monitoring data set from Tampa Bay, Florida (USA), we assess the validity of the FLH product from the Moderate Resolution Imaging Spectrometer against a suite of water quality parameters taken in a variety of conditions throughout this large optically complex estuarine system. . Overall, the results show a 106% increase in the validity of chla concentration estimation using FLH over the standard chla estimate from the blue-green OC3M algorithm. Additionally, a systematic analysis of sampling sites throughout the bay is undertaken to understand how the FLH product responds to varying conditions in the estuary and correlations are conducted to see how the relationships between satellite FLH and in situ chlorophyll-a change with depth, distance from shore, from structures like bridges, and nutrient concentrations and turbidity. Such analysis illustrates that the correlations between

  18. AVIRIS calibration and application in coastal oceanic environments - Tracers of soluble and particulate constituents of the Tampa Bay coastal plume

    SciTech Connect

    Carder, K.L.; Steward, R.G.; Chen, R.F.; Hawes, S.; Lee, Z.; Davis, C.O. Michigan Environmental Research Inst., Ann Arbor, MI )

    1993-03-01

    AVIRIS is a testbed for future spacecraft sensors (such as HIRIS and MODIS) planned for the Earth Observing System. Model-derived absorption coefficients at 415 nm, a(415), and back-scattering coefficients at 671 nm, b[sub b] (671) for Tampa Bay waters were used to create images from AVIRIS data of the dissolved component of a(415) due to gelbstoff, a[sub g] (415), and salinity. Images of a[sub g] (415), salinity, and b[sub b] (671) were used to depict the distribution of dissolved and particulate constituents, respectively, for Tampa Bay plume during late, ebb-tidal conditions. Salinity covaried with a[sub g] (415), which provided a means of mapping salinity from the a[sub g] (415) imagery. The concentration of suspended particles, as inferred from b[sub g] (671), was extremely variable in the shallow regions where waves and currents interacted. Pollutants covarying with fresh water or suspended sediments can be mapped from a[sub g] (415) and b[sub b] (671) images, respectively. 22 refs.

  19. Mitigation options for fish and wildlife resources affected by port and other water-dependent developments in Tampa Bay, Florida

    SciTech Connect

    Dial, R.S.; Deis, D.R.

    1986-06-01

    Ten past restoration projects in Tampa Bay were evaluated. Habitats included Spartina marsh, mangrove forests, Juncus marsh, and subtidal habitat. Success was difficult to determine because goals for each project had not been defined. In-kind losses of habitat occurred in all but one project. Permanent losses occurred in at least three projects. Restoration of Spartina and Juncus marshes was recommended. Mangroves will recruit into Spartina marshes, provided a seed source is available; planting of mangroves alone is not recommended. Seagrass restoration is not recommended at this time. Twelve sites, most less than 50 ha, were identified as potential restoration sites to give 344 ha of subtidal habitat to be made shallower and 176 ha of uplands to be scraped down. The current management program's legal and policy needs for improving environmental management, the role of mitigation, and the information needed to develop mitigation plans are discussed. This report will be useful to decisionmakers concerned with wetland habitat loss and restoration in Tampa Bay, Florida, and other areas with similar habitats.

  20. An analysis of urban thermal characteristics and associated land cover in Tampa Bay and Las Vegas using Landsat satellite data

    USGS Publications Warehouse

    Xian, G.; Crane, M.

    2006-01-01

    Remote sensing data from both Landsat 5 and Landsat 7 systems were utilized to assess urban area thermal characteristics in Tampa Bay watershed of west-central Florida, and the Las Vegas valley of southern Nevada. To quantitatively determine urban land use extents and development densities, sub-pixel impervious surface areas were mapped for both areas. The urban-rural boundaries and urban development densities were defined by selecting certain imperviousness threshold values and Landsat thermal bands were used to investigate urban surface thermal patterns. Analysis results suggest that urban surface thermal characteristics and patterns can be identified through qualitatively based urban land use and development density data. Results show the urban area of the Tampa Bay watershed has a daytime heating effect (heat-source), whereas the urban surface in Las Vegas has a daytime cooling effect (heat-sink). These thermal effects strongly correlated with urban development densities where higher percent imperviousness is usually associated with higher surface temperature. Using vegetation canopy coverage information, the spatial and temporal distributions of urban impervious surface and associated thermal characteristics are demonstrated to be very useful sources in quantifying urban land use, development intensity, and urban thermal patterns. ?? 2006 Elsevier Inc. All rights reserved.

  1. Application of Bacteroides fragilis phage as an alternative indicator of sewage pollution in Tampa Bay, Florida

    USGS Publications Warehouse

    McLaughlin, M.R.; Rose, J.B.

    2006-01-01

    Traditional fecal coliform bacterial indicators have been found to be severely limited in determining the significance and sources of fecal contamination in ambient waters of tropical and subtropical regions. The bacteriophages that infect Bacteroides fragilis have been suggested as better fecal indicators and at least one type may be human specific. In this study, the phages that infect B. fragilis host RYC2056 (RYC), including phage B56-3, and host ATCC 51477-HSP40 (HSP), including the human specific phage B40-8, were evaluated in the drainage basins of Tampa Bay, 7 samples (n = 62), or 11%, tested positive for the presence of phages infecting the host HSP, whereas 28 samples, or 45%, tested positive using the host RYC. A survival study was also done to compare the persistence of phages B56-3 and B40-8 to MS2 coliphage in seawater at various temperatures. The decay rates for MS2 were 0.239 log 10 d-1 at 10??C, but increased to 0.896 at 20??C and 2.62 log10 d-1 at 30??C. The two B. fragilis phages persisted much longer in the seawater compared to the coliphage and showed little variation between the temperatures. All sewage influents sampled from area wastewater treatment plants contained phages that infected the two B. fragilis hosts at levels from 1.2 ?? 104 to 1.11 ?? 10 5 pfu 100 ml-1 for host RYC and 67 to 350 pfu 100 ml -1 for host HSP. Of the 7 chlorinated effluent samples tested, 3 were positive for the presence of the phage using the host RYC and the phage enrichment method, with levels estimated to be <10 pfu 100 ml-1. No phages were detected using the host HSP in the treated sewage effluent. Coliphages were found in 3 of the 7 effluent samples at a range of 30 to 1.2 ?? 103 pfu 100 ml-1. ?? 2006 Estuarine Research Federation.

  2. 33 CFR 100.729 - Columbus Day Regatta, Biscayne Bay, Miami, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Columbus Day Regatta, Biscayne Bay, Miami, FL. 100.729 Section 100.729 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.729 Columbus...

  3. 33 CFR 100.729 - Columbus Day Regatta, Biscayne Bay, Miami, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Columbus Day Regatta, Biscayne Bay, Miami, FL. 100.729 Section 100.729 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.729 Columbus...

  4. 33 CFR 100.729 - Columbus Day Regatta, Biscayne Bay, Miami, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Columbus Day Regatta, Biscayne Bay, Miami, FL. 100.729 Section 100.729 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.729 Columbus...

  5. DROUGHT-INDUCED DECLINE OF SUBMERGED AQUATIC VEGETATION IN ESCAMBIA BAY, FL.

    EPA Science Inventory

    Locally, the recent decline of SAV was first noticed in Blackwater Bay, FL by N. Craft of Northwest Florida Aquatic Preserves (personal communication). High salinity persisted throughout the summer and fall of 2000 due to a severe drought that has affected much of the southeast ...

  6. 78 FR 57061 - Special Local Regulation; Red Bull Flugtag Miami, Biscayne Bay; Miami, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-17

    .... SUPPLEMENTARY INFORMATION: Table of Acronyms DHS Department of Homeland Security FR Federal Register NPRM Notice... Flugtag Miami, Biscayne Bay; Miami, FL in the Federal Register (78 FR 40079). We received no comments ] on... event consists of approximately 100 participants launching 30 self-propelled flying objects from a...

  7. A FIVE YEAR RECORD OF PHYTOPLANKTON PIGMENT PATTERNS IN ESCAMBIA/PENSACOLA BAY, FL

    EPA Science Inventory

    Phytoplankton pigments were monitored quarterly at over 50 stations in Escambia/Pensacola Bay System (Pensacola, FL) from spring of 1996 to fall 2000. HPLC accessory pigments were used to analyze the phytoplankton community structure. HPLC data suggest a dominance of blue-green a...

  8. 76 FR 23189 - Safety Zone; Pensacola Bay; Pensacola, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-26

    ... zone for a portion of Pensacola Bay including all waters represented by positions 30 20'40.73'' N 087 17'19.73'' W, 30 20'11.12'' N 087 17'20.31'' W, 30 20'41.51'' N 087 15'01.15'' W, and 30 20'11.76'' N... zone for a portion of Pensacola Bay including all waters represented by positions 30 20'40.73'' N...

  9. Digital recovery of 19th century surveys in Tampa Bay, Florida: Topographic charts and Public Land Surveys

    USGS Publications Warehouse

    Raabe, Ellen A.; Roy, Laura C.; McIvor, Carole C.; Gleim, Andrew D.

    2012-01-01

    Recovery of historic data to a digital setting adresses the need for data integration through time, bridging technical gaps and differences. The goal of this study was to evaluate a marsh-to-mangrove conversion spanning 125 years and the implications for present coastal-resource management (Yates and others, 2011; Raabe and others, 2012). The U.S. Geological Survey in St. Petersburg, Fla., georectified and digitized 1870s T-sheets at four Tampa Bay locations that still supported coastal wetlands in 2000 (table 1). Nineteenth century Public Land Surveys of Township and Range lines were also digitized for each site, as a secondary data source to verify historic landscape features (table 2).

  10. ANNUAL CYCLE OF PERIPHYTON, ZOOPLANKTON, AND WATER QUALITY PARAMETERS ALONG A 5 STATION TRANSECT OF ESCAMBIA BAY, FL

    EPA Science Inventory

    Phytoplankton, zooplankton and water quality parameters were monitored monthly along a 5-station transect in Escambia Bay (Pensacola, FL) from fall 1999 to fall 2000. To provide insight into nutrient processing in Escambia Bay and effects of grazers on phytoplankton community st...

  11. Exposure and inequality for select urban air pollutants in the Tampa Bay area.

    PubMed

    Yu, Haofei; Stuart, Amy L

    2016-05-01

    Air pollution exposure has been linked to numerous adverse health effects, with some disadvantaged subgroups disproportionately burdened. The objective of this work was to characterize distributions of emissions and concentrations of a few important urban air toxics at high spatiotemporal resolution in order to assess exposure and inequality. Benzene, 1,3-butadiene, formaldehyde, and acetaldehyde were the focus pollutants, with oxides of nitrogen (NOx) estimated for comparisons. Primary pollutant emissions were estimated for the full spectrum of source types in the Tampa area using a hybrid approach that is most detailed for major roadways and includes hourly variations in vehicle speed. Resultant pollutant concentrations were calculated using the CALPUFF dispersion model, and combined with CMAQ model output to account for secondary formation of formaldehyde and acetaldehyde. Census demographic data were applied to estimate residential pollution exposures and inequality among population subgroups. Estimated concentrations of benzene, 1,3-butadiene, and NOx were generally higher in urban areas and lower in rural areas. Exposures to these pollutants were disproportionately high for subgroups characterized as black, Hispanic and low income (annual household income less than $20,000). For formaldehyde and acetaldehyde, the patterns of concentration and exposure were largely reversed. Results suggest that disparities in exposure depend on pollutant type. PMID:26895157

  12. 77 FR 15600 - Special Local Regulation; Emerald Coast Super Boat Grand Prix; Saint Andrew Bay; Panama City, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-16

    ...The Coast Guard is establishing a temporary special local regulation for a portion of Saint Andrew Bay, Panama City, FL. This action is necessary for the safeguard of participants and spectators, including all crews, vessels, and persons on navigable waters during the Emerald Coast Super Boat Grand Prix high speed boat races. Entry into, transiting in or anchoring in this area is prohibited to......

  13. 33 CFR 334.778 - Pensacola Bay and waters contiguous to the Naval Air Station, Pensacola, FL; restricted area.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... contiguous to the Naval Air Station, Pensacola, FL; restricted area. 334.778 Section 334.778 Navigation and... RESTRICTED AREA REGULATIONS § 334.778 Pensacola Bay and waters contiguous to the Naval Air Station, Pensacola... Federal, State, or local law enforcement agency are restricted from transiting, anchoring, or...

  14. High-resolution Land Cover Datasets, Composite Curve Numbers, and Storm Water Retention in the Tampa Bay, FL region

    EPA Science Inventory

    Policy makers need to understand how land cover change alters storm water regimes, yet existing methods do not fully utilize newly available datasets to quantify storm water changes at a landscape-scale. Here, we use high-resolution, remotely-sensed land cover, imperviousness, an...

  15. Mangrove soil and vegetation change after tidal wetland creation: a 20-year chronosequence in Tampa Bay, FL

    EPA Science Inventory

    Mangrove restoration and creation efforts are increasingly proposed as mechanisms to compensate for mangrove loss (which has been high in recent decades: ~30-50% global loss). However, ecosystem development and functionality following mangrove restoration and creation is poorly u...

  16. Ecosystem development after mangrove creation: plant-soil change across a twenty-year chronosequence in Tampa Bay, FL

    EPA Science Inventory

    On a global scale, the loss of mangroves has been high (~1-2% loss per year in recent decades). Recognizing the important ecosystem services supported by mangroves, restoration and creation efforts are increasingly proposed as mechanisms to replace those services lost after mangr...

  17. 76 FR 68101 - Safety Zone; Art Gallery Party St. Pete 2011 Fireworks Display, Tampa Bay, St. Petersburg, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-03

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Art Gallery Party St. Pete 2011 Fireworks... Spa Beach in St. Petersburg, Florida during the Art Gallery Party St. Pete 2011 Fireworks Display on... to provide for the safety of event participants, spectator craft, and other vessels transiting...

  18. Bathymetry and vegetation in isolated marsh and cypress wetlands in the northern Tampa Bay Area, 2000-2004

    USGS Publications Warehouse

    Haag, Kim H.; Lee, Terrie M.; Herndon, Donald C.

    2005-01-01

    Wetland bathymetry and vegetation mapping are two commonly used lines of evidence for assessing the hydrologic and ecologic status of expansive coastal and riverine wetlands. For small isolated freshwater wetlands, however, bathymetric data coupled with vegetation assessments are generally scarce, despite the prevalence of isolated wetlands in many regions of the United States and the recognized importance of topography as a control on inundation patterns and vegetation distribution. In the northern Tampa Bay area of west-central Florida, bathymetry was mapped and vegetation was assessed in five marsh and five cypress wetlands. These 10 isolated wetlands were grouped into three categories based on the effects of ground-water withdrawals from regional municipal well fields: natural (no effect), impaired (drier than natural), and augmented (wetlands with artificially augmented water levels). Delineation of the wetland perimeter was a critical component for estimating wetland-surface area and stored water volume. The wetland perimeter was delineated by the presence of Serenoa repens (the 'palmetto fringe') at 9 of the 10 sites. At the 10th site, where the palmetto fringe was absent, hydric-soils indicators were used to delineate the perimeter. Bathymetric data were collected using one or more techniques, depending on the physical characteristics of each wetland. Wetland stage was measured hourly using continuous stage recorders. Wetland vegetation was assessed semiannually for 2 1/2 years in fixed plots located at three distinct elevations. Vegetation assessments were used to determine the community composition and the relative abundance of obligate, facultative wet, and facultative species at each elevation. Bathymetry maps were generated, and stage-area and stage-volume relations were developed for all 10 wetlands. Bathymetric data sets containing a high density of data points collected at frequent and regular spatial intervals provided the most useful stage

  19. A hybrid approach to estimate chromophoric dissolved organic matter in turbid estuaries from satellite measurements: a case study for Tampa Bay.

    PubMed

    Le, Chengfeng; Hu, Chuanmin

    2013-08-12

    Remote sensing of chromophoric dissolved organic matter (CDOM) from satellite measurements for estuaries has been problematic due to optical complexity of estuarine waters and uncertainties in satellite-derived remote sensing reflectance (Rrs, sr(-1)). Here we demonstrate a hybrid approach to combine empirical and semi-analytical algorithms to derive CDOM absorption coefficient at 443 nm (a(g)(443), m(-1)) in a turbid estuary (Tampa Bay) from MODIS Aqua (MODISA) and SeaWiFS measurements. The approach first used a validated empirical algorithm and a modified quasi-analytical algorithm (QAA) to derive chlorophyll-a concentration (Chla, mg m(-3)) and particulate backscattering coefficient at 443 nm (b(bp)(443), m(-1)), respectively, from which phytoplankton pigment and non-algal particulate absorption coefficient at 443 nm (a(ph)(443) and a(d)(443), m(-1)) were derived with pre-determined bio-optical relationships. Then, the modified QAA was used to estimate the total absorption coefficient at 443 nm (a(t)(443), m(-1)). Finally, a(g)(443) was estimated as (a(t)(443) - a(ph)(443) - a(d)(443) - a(w)(443)) where a(w)(443) is the absorption coefficient of pure water (a constant). Using data collected from 71 field stations and 33 near-concurrent satellite-field matchup data pairs covering a large dynamic range (0.3 - 8 m(-1)), the approach showed ~23% RMS uncertainties in retrieving a(g)(443) when in situ Rrs data (N = 71) were used. The same approach applied to satellite Rrs yielded much higher uncertainties of a(g)(443) (~85%) due to large errors in the satellite-retrieved Rrs(443). When the Rrs(443) was derived from the satellite-retrieved Rrs(550) and then used in the hybrid approach, uncertainties in the retrieved a(g)(443) reduced to ~30% (N = 33). Application of the approach to MODISA and SeaWiFS data led to a 15-year time series of monthly mean a(g)(443) distributions in Tampa Bay between 1998 and 2012. This time series showed significant seasonal and annual

  20. Salinity characteristics and distribution and effects of alternative plans for freshwater withdrawal, Little Manatee River estuary and adjacent areas of Tampa Bay, Florida

    USGS Publications Warehouse

    Fernandez, Mario

    1985-01-01

    The Little Manatee River, a coastal stream that empties into Tampa Bay, Florida, may be used as a source of freshwater. Reduction of streamflow will result in upstream movement of saltwater in the stream. Data on streamflow, tide stage, and specific conductance describe the salinity distribution of the estuary. Vertical conductivity profiles indicate that the river is vertically homogeneous during low flow. The maximum upstream location of the saltwater-freshwater interface (800 micromhos) in the river was described by multiple regression analysis involving mean daily streamflow and high-high tide. The coefficient of determination is 0.94 with a root mean square error of + or - 0.4 mile. The location on the river where the estuarine system ends and the riverine system begins is at about 9.9 miles above the reference station at Shell Point. Duration analysis of conductivity indicates that the maximum upstream location of the interface exceeded 9.7 miles about 17 percent of the days for the period of study. Reduction by 50 percent of streamflow for the 90day, 2-year and 20-year recurrence-interval low flow would relocate the maximum intrusion of the interface at the 2-year and 20-year flows upstream by 0.7 and 0.2 mile, respectively. (USGS)

  1. Energy-water nexus analysis of enhanced water supply scenarios: a regional comparison of Tampa Bay, Florida, and San Diego, California.

    PubMed

    Mo, Weiwei; Wang, Ranran; Zimmerman, Julie B

    2014-05-20

    Increased water demand and scarce freshwater resources have forced communities to seek nontraditional water sources. These challenges are exacerbated in coastal communities, where population growth rates and densities in the United States are the highest. To understand the current management dilemma between constrained surface and groundwater sources and potential new water sources, Tampa Bay, Florida (TB), and San Diego, California (SD), were studied through 2030 accounting for changes in population, water demand, and electricity grid mix. These locations were chosen on the basis of their similar populations, land areas, economies, and water consumption characters as well as their coastal locations and rising contradictions between water demand and supply. Three scenarios were evaluated for each study area: (1) maximization of traditional supplies; (2) maximization of seawater desalination; and (3) maximization of nonpotable water reclamation. Three types of impacts were assessed: embodied energy, greenhouse gas (GHG) emission, and energy cost. SD was found to have higher embodied energy and energy cost but lower GHG emission than TB in most of its water infrastructure systems because of the differences between the electricity grid mixes and water resources of the two regions. Maximizing water reclamation was found to be better than increasing either traditional supplies or seawater desalination in both regions in terms of the three impact categories. The results further imply the importance of assessing the energy-water nexus when pursuing demand-side control targets or goals as well to ensure that the potentially most economical options are considered. PMID:24730467

  2. Contaminant profiles for surface water, sediment, flora and fauna associated with the mangrove fringe along middle and lower eastern Tampa Bay.

    PubMed

    Lewis, M A; Russell, M J

    2015-06-15

    Contaminant concentrations are reported for surface water, sediment, flora and fauna collected during 2010-2011 from the mangrove fringe along eastern Tampa Bay, Florida. Concentrations of trace metals, chlorinated pesticides, atrazine, total polycyclic aromatic hydrocarbons, and polychlorinated biphenyls were species-, chemical- and location-specific. Contaminants in sediments did not exceed proposed individual sediment quality guidelines. Most sediment quality assessment quotients were less than one indicating the likelihood of no inhibitory effect based on chemical measurements alone. Faunal species typically contained more contaminants than plant species; seagrass usually contained more chemicals than mangroves. Bioconcentration factors for marine angiosperms were usually less than 10 and ranged between 1 and 31. Mercury concentrations (ppm) in blue crabs and fish did not exceed the U.S. Environmental Protection Agency fish tissue criterion of 0.3 and the U.S. Food and Drug Administration action level of 1.0. In contrast, total mercury concentrations in faunal species often exceeded guideline values for wildlife consumers of aquatic biota. PMID:25931177

  3. The effect of discharge and water quality of the Alafia River, Hillsborough River, and the Tampa Bypass Canal on nutrient loading to Hillsborough Bay, Florida

    USGS Publications Warehouse

    Stoker, Y.E.; Levesque, V.A.; Woodham, W.M.

    1996-01-01

    Techniques to measure discharge and nutrient loads in the tidally affected portions of two major rivers tributary to Tampa Bay, the Alafia River and the Hillsborough River, were developed and tested. Discharge, water quality, and total phosphorus and total nitrogen loads for the period April 1, 1991, through March 31, 1992, were evaluated and compared with discharge,water quality, and loads at long-term, nontidal gages in the basins. Long-term discharge and water-quality characteristics at selected sites in the Alafia river and Hillsborough River basins were evaluated. A long-term, decreasing trend in annual-mean discharge was observed for discharges at the Alafia River, Sulphur Springs, and Hillsborough River. Low-flow and high-flow characteristics in the Alafia River and Hillsborough River have changed as well. The decreasing trend in the Alafia River discharges is not due to deficient rainfall but probably is due to decreased ground-water inflow to the river because of long-term declines in the potentiometric surface of the Upper Floridan aquifer. Daily-mean discharges at the mouth of the Alafia River were more variable than discharges at the long-term gage upstream. Daily-mean discharge near the mouth of the river was negative at times, indicating a net loss of water from the river. Daily-mean discharge from the Hillsborough River was minimal from Apil to May 1991, and from late September 1991 to March 1992. During these periods, discharge from Sulphur Springs was a major source of freshwater to the tidally affected reach of the river. Concentrations of total phosphorus and orthophosphorus in the Alafia River above Lithia Springs were the greatest in the 1960's and have generally declined since then. Total nitrogen concentrations have been declining since about 1981. However, increases in nitrate plus nitrite nitrogen concentrations are occurring in Lithia Springs, a second-magnitude spring that flows into the Alafia River. Specific conductance of water

  4. 76 FR 76044 - Safety Zone; Power Line Replacement, West Bay, Panama City, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-06

    ...The Coast Guard is establishing a temporary safety zone for a portion of West Bay Creek and West Bay, to include all waters between the Highway 79 Fixed Bridge and the mouth of West Bay Creek out to buoy markers 27 and 28 of the Intracoastal Waterway. This action is necessary for the protection of vessels and persons on navigable waters during the replacement of overhead power lines. Entry......

  5. An historical perspective on eutrophication in the Pensacola Bay Estuary, FL, USA

    EPA Science Inventory

    In this chapter, we provide a brief description of the Pensacola Bay estuary, examining the available historical data for evidence of trends in eutrophication within the estuary. Common to many industrialized estuaries, Pensacola Bay has been subjected to unregulated point source...

  6. 77 FR 75550 - Special Local Regulations; 2013 Orange Bowl Paddle Championship, Biscayne Bay, Miami, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-21

    ...: Table of Acronyms DHS Department of Homeland Security FR Federal Register NPRM Notice of Proposed... SECURITY Coast Guard 33 CFR Part 100 RIN 1625-AA08 Special Local Regulations; 2013 Orange Bowl Paddle... in Miami, FL during the 2013 Orange Bowl Paddle Championship. The event will take place on January...

  7. 76 FR 53824 - Safety Zone; 2011 Rohto Ironman 70.3 Miami, Biscayne Bay, Miami, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-30

    ..., Miami, FL in the Federal Register (76 FR 24840). We received no comments on the proposed rule. No public... Rohto Ironman 70.3 Miami, a triathlon. The Rohto Ironman 70.3 Miami is scheduled to take place on Sunday... swim portion of the triathlon. Discussion of Rule On October 30, 2011, Paramount Productions, LLC...

  8. Fresh Water Inflow and Oyster Productivity in Apalachicola Bay, FL (USA)

    EPA Science Inventory

    Apalachicola Bay lies at the mouth of the Apalachicola River, where seasonally variable freshwater inflows and shifting winds support an unusually productive and commercially important oyster fishery. While there is concern that upstream water withdrawals may impact the fishery,...

  9. 77 FR 21446 - Safety Zone; Volvo Ocean Racing Youth Regatta, Biscayne Bay, Miami, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-10

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Volvo Ocean Racing Youth Regatta, Biscayne... establishing a temporary safety zone on the waters of Biscayne Bay in Miami, Florida during the Volvo Ocean... protect Volvo Ocean Racing Youth Regatta participants and the general public from hazards associated...

  10. EFFECTS OF HURRICANE IVAN ON WATER QUALITY IN PENSACOLA BAY, FL USA

    EPA Science Inventory

    Pensacola Bay was in the strong NE quadrant of Hurricane Ivan when it made landfall on September 16, 2004 as a category 3 hurricane on the Saffir-Simpson scale. We present data describing the timeline and maximum height of the storm surge, the extent of flooding of coastal land, ...

  11. BENTHIC SUSPENSION FEEDERS IN PENSACOLA BAY, FL: PRELIMINARY STUDIES CONCERNING IMPACTS ON PHYTOPLANKTON THROUGH GRAZING

    EPA Science Inventory

    Cultural eutrophication in coastal habitats has become a crucial problem for resource managers and policymakers and a critical area of research in ecological science. Models of eutrophication have been developed for some coastal habitats (e.g., Chesapeake Bay), but research on ma...

  12. BENTHIC SUSPENSION FEEDERS IN PENSACOLA BAY, FL: PRELIMINARY STUDIES CONCERNING IMPACTS ON PHYTOPLANKTON THROUGH GRAZING (ABSTRACT)

    EPA Science Inventory

    Cultural eutrophication in coastal habitats has become a crucial problem for resource managers and policymakers and a critical area of research in ecological science. Models of eutrophication have been developed for some coastal habitats (e.g., Chesapeake Bay), but research on ma...

  13. NUTRIENT LIMITATION OF PHYTOPLANKTON GROWTH AND PHYSIOLOGY IN A SUBTROPICAL ESTUARY (PENSACOLA BAY, FL)

    EPA Science Inventory

    Phytoplankton nutrient limitation was studied in a sub-estuary of lower Pensacola Bay using several techniques. Results for <5 um and . 5 um phytoplankton were similar. Nutrient-addition bioassays indicated year-round nutrient limitation, in contrast to seasonal patterns often ...

  14. EFFECTS OF ZOOPLANKTON GRAZING ON PHYTOPLANKTON COMMUNITIES IN ESCAMBIA BAY, FL

    EPA Science Inventory

    Studies of microheterotroph and meso-zooplankton grazing in nutrient enriched natural waters of Escambia Bay have been conducted for the past two years. These studies include experimental scale (1 l, 8 l, and 80 l) and lab/field comparisons. Sites for these studies include oligoh...

  15. 78 FR 54585 - Safety Zone; Escape to Miami Triathlon, Biscayne Bay, Miami, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-05

    .... SUPPLEMENTARY INFORMATION: Table of Acronyms DHS Department of Homeland Security FR Federal Register NPRM Notice... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Escape to Miami Triathlon, Biscayne Bay... during the Publix Escape to Miami Triathlon. The Publix Escape to Miami Triathlon is scheduled to...

  16. 76 FR 24837 - Regulated Navigation Area; Columbus Day Weekend, Biscayne Bay, Miami, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-03

    ..., 2008, issue of the Federal Register (73 FR 3316). Public Meeting We do not now plan to hold a public... Guard proposes to establish a permanent regulated navigation area (RNA) on Biscayne Bay in Miami, Florida. The RNA would be enforced annually on the Saturday and Sunday of the second week in...

  17. 76 FR 49301 - Regulated Navigation Area; Columbus Day Weekend, Biscayne Bay, Miami, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-10

    ... (NPRM) entitled USCG-2011-0044 in the Federal Register (76 FR 24837). We received no comments on the... establishing a permanent regulated navigation area (RNA) on Biscayne Bay in Miami, Florida. The RNA will be... Bank and the Rickenbacker Causeway Bridge. All vessels within the RNA are: required to transit the...

  18. Creating a monthly time series of the potentiometric surface in the Upper Floridan aquifer, Northern Tampa Bay area, Florida, January 2000-December 2009

    USGS Publications Warehouse

    Lee, Terrie M.; Fouad, Geoffrey G.

    2014-01-01

    In Florida’s karst terrain, where groundwater and surface waters interact, a mapping time series of the potentiometric surface in the Upper Floridan aquifer offers a versatile metric for assessing the hydrologic condition of both the aquifer and overlying streams and wetlands. Long-term groundwater monitoring data were used to generate a monthly time series of potentiometric surfaces in the Upper Floridan aquifer over a 573-square-mile area of west-central Florida between January 2000 and December 2009. Recorded groundwater elevations were collated for 260 groundwater monitoring wells in the Northern Tampa Bay area, and a continuous time series of daily observations was created for 197 of the wells by estimating missing daily values through regression relations with other monitoring wells. Kriging was used to interpolate the monthly average potentiometric-surface elevation in the Upper Floridan aquifer over a decade. The mapping time series gives spatial and temporal coherence to groundwater monitoring data collected continuously over the decade by three different organizations, but at various frequencies. Further, the mapping time series describes the potentiometric surface beneath parts of six regionally important stream watersheds and 11 municipal well fields that collectively withdraw about 90 million gallons per day from the Upper Floridan aquifer. Monthly semivariogram models were developed using monthly average groundwater levels at wells. Kriging was used to interpolate the monthly average potentiometric-surface elevations and to quantify the uncertainty in the interpolated elevations. Drawdown of the potentiometric surface within well fields was likely the cause of a characteristic decrease and then increase in the observed semivariance with increasing lag distance. This characteristic made use of the hole effect model appropriate for describing the monthly semivariograms and the interpolated surfaces. Spatial variance reflected in the monthly

  19. Linking land use change to recreational fishery valuation with a spatially explicit behavior model: A case study from Tampa Bay, FL USA

    EPA Science Inventory

    Drawing a link between habitat change and production and delivery of ecosystem services is a priority in coastal estuarine ecosystems. This link is needed to fully understand how human communities can influence ecosystem sustainability. Mechanistic modeling tools are highly fun...

  20. Anthropogenic Organic Compounds in Ground Water and Finished Water of Community Water Systems in the Northern Tampa Bay Area, Florida, 2002-04

    USGS Publications Warehouse

    Metz, Patricia A.; Delzer, Gregory C.; Berndt, Marian P.; Crandall, Christy A.; Toccalino, Patricia L.

    2007-01-01

    As part of the U.S. Geological Survey's (USGS's) National Water-Quality Assessment (NAWQA) Program, a Source Water-Quality Assessment (SWQA) was conducted in the unconfined and semiconfined portions of the Upper Floridan aquifer system during 2002-04. SWQAs are two-phased sampling activities, wherein phase 1 was designed to evaluate the occurrence of 258 anthropogenic organic compounds (AOCs) in ground water used as source water for 30 of the largest-producing community water system (CWS) wells in the northern Tampa Bay area, Florida. The 258 AOCs included volatile organic compounds (VOCs), pesticides, and other anthropogenic organic compounds (OAOCs). Phase 2 was designed to monitor concentrations in the source water and also the finished water of CWSs for compounds most frequently detected during phase 1. During phase 1 of the SWQA study, 31 of the 258 AOCs were detected in source-water samples collected from CWS wells at low concentrations (less than 1.0 microgram per liter (ug/L)). Twelve AOCs were detected in at least 10 percent of samples. Concentrations from 16 of the 31 detected AOCs were about 2 to 5 orders of magnitude below human-health benchmarks indicating that concentrations were unlikely to be of potential human-health concern. The potential human-health relevance for the remaining 15 detected unregulated AOCs could not be evaluated because no human-health benchmarks were available for these compounds. Hydrogeology, population, and land use were examined to evaluate the effects of these variables on the source water monitored. Approximately three times as many detections of VOCs (27) and pesticides (34) occurred in unconfined areas than in the semiconfined areas (8 VOCs, 14 pesticides). In contrast, 1 OAOC was detected in unconfined areas, and 13 OAOCs were detected in semiconfined areas with 9 of the OAOC detections occurring in samples from two wells located near septic systems. Analyses of population and land use indicated that the number of

  1. BAY REGION ATMOSPHERIC CHEMISTRY EXPERIMENT (BRACE)

    EPA Science Inventory

    The Tampa Bay Estuary Program (TBEP) was formed in 1991 to assist the community in developing a comprehensive plan to restore and protect Tampa Bay. The ecological indicator of the health of the Bay is the coverage of seagrasses, historically in decline, which are important to...

  2. Changes in mid-late Holocene hurricane activity influence coastal dynamics in northeastern Gulf of Mexico - A case study in the Choctawhatchee Bay, Destin FL

    NASA Astrophysics Data System (ADS)

    Ranasinghage, P. N.; Donnelly, J. P.; Evans, R. L.; Ashton, A. D.; Condon, K.; Sullivan, R.; Beltzer, A.; Coastal Systems Group

    2011-12-01

    Hurricanes greatly influence coastal changes in the northern Gulf of Mexico. Sedimentological, geochemical, and productivity indicators show that Choctawhatchee Bay, Destin, FL underwent a series of hydrological changes during the mid-late Holocene period. Sedimentological evidence suggests that these changes were, at least in part, driven by variations in the frequency of intense hurricane landfalls in the area. Based on CHIRP seismic reflectance images, a total of 12 sediment cores, ranging in length from 2-5 m, were extracted from Choctawhatchee Bay. Stratigraphy of these cores was studied using X radiograph and elemental composition was measured at 1mm resolution using an XRF core scanner. Grain size and color reflectance were measured at 0.5-1 cm resolution. Principal component analysis (PCA) was performed on the first derivatives of the combined visible - nIR color reflectance data base to derive compositional data. Environmental proxies (Ca/Ti, Sr/Ti and grain size) indicate that Choctawhatchee Bay was a high energy environment with marine influence between ~6000 yrs BP and ~ 3200 yrs BP and also between ~ 2500 - ~1000 yrs BP. Decreases in gain size, Ca/Ti, and Sr/Ti ratios and an increase in blue-green and eukaryotic algae, as shown by the PCA, indicate gradual isolation and greater freshwater influence in the bay between ~3200 - ~2500 yrs BP. Since sea level has been relatively stable during the mid-late Holocene in the Gulf of Mexico, these changes are most likely related to changes in barrier morphology across the mouth of the bay. During periods of higher hurricane activity, frequent barrier breaching opens the bay, whereas barrier growth during quiescent periods isolates the bay from direct marine influence. The high energy environment between ~2500 - ~ 1000 yrs BP begins with a coarse storm sand layer, This period is also marked by an unconformity, formed by the erosion of a possible strong storm event occurred ~1000 yrs BP . The presence of a number

  3. The Validity Chlorophyll-a Estimation by Sun Induced Fluorescence in Estuarine Waters: An Analysis of Long-term (2003-2011) Water Quality Data from Tampa Bay, Florida (USA)

    NASA Technical Reports Server (NTRS)

    Moreno-Madrinan, Max Jacobo; Fischer, Andrew

    2012-01-01

    Satellite observation of phytoplankton concentration or chlorophyll-a is an important characteristic, critically integral to monitoring coastal water quality. However, the optical properties of estuarine and coastal waters are highly variable and complex and pose a great challenge for accurate analysis. Constituents such as suspended solids and dissolved organic matter and the overlapping and uncorrelated absorptions in the blue region of the spectrum renders the blue-green ratio algorithms for estimating chlorophyll-a inaccurate. Measurement of sun-induced chlorophyll fluorescence, on the other hand, which utilizes the near infrared portion of the electromagnetic spectrum, may provide a better estimate of phytoplankton concentrations. While modelling and laboratory studies have illustrated both the utility and limitations of satellite baseline algorithms based on the sun induced chlorophyll fluorescence signal, few have examined the empirical validity of these algorithms using a comprehensive long term in situ data set. In an unprecedented analysis of a long term (2003-2011) in situ monitoring data from Tampa Bay, Florida (USA), we assess the validity of the FLH product from the Moderate Resolution Imaging Spectrometer (MODIS) against chlorophyll ]a and a suite of water quality parameters taken in a variety of conditions throughout a large optically complex estuarine system. A systematic analysis of sampling sites throughout the bay is undertaken to understand how the relationship between FLH and in situ chlorophyll-a responds to varying conditions within the estuary including water depth, distance from shore and structures and eight water quality parameters. From the 39 station for which data was derived, 22 stations showed significant correlations when the FLH product was matched with in situ chlorophyll-alpha data. The correlations (r2) for individual stations within Tampa Bay ranged between 0.67 (n=28, pless than 0.01) and-0.457 (n=12, p=.016), indicating that

  4. Superfund Record of Decision (EPA region 4): Harris/Palm Bay facility, Palm Bay, Brevard County, FL; (First remedial action), June 1990

    SciTech Connect

    Not Available

    1990-06-28

    The 345-acre Harris/Palm Bay Facility site is an electronics manufacturing company in Palm Bay, Brevard County, Florida. Surrounding land use is commercial, residential, and industrial. The site overlies an unconsolidated aquifer, which is used by a public wellfield located south of and downgradient of the site, from the 1950s to 1967. In 1981, EPA identified VOCs in ground water wells located south of the Government Systems facility. Ground water contamination was attributed to several onsite incidents at the Government Systems plant including two fires, which resulted in the dumping of chemical vats, a broken acid/solvent line, and spillage at drum storage areas. The primary contaminants of concern affecting the ground water are VOCs including TCE; metals including chromium and lead; and other inorganics including fluoride.

  5. Mercury and selenium in blood and epidermis of bottlenose dolphins (Tursiops truncatus) from Sarasota Bay, FL: interaction and relevance to life history and hematologic parameters.

    PubMed

    Woshner, Victoria; Knott, Katrina; Wells, Randall; Willetto, Carla; Swor, Rhonda; O'Hara, Todd

    2008-09-01

    Blood and epidermal biopsies from free-ranging Tursiops truncatus captured and released during either summer or winter health assessments in Sarasota Bay, FL, were evaluated for concentrations of mercury, selenium, stable isotopes (d(13)C and d(15)N), and blood glutathione peroxidase activity in conjunction with routine hematology and serum chemistry panels. Major objectives were to: 1) quantify and describe relationships among mercury, selenium, glutathione peroxidase, and stable isotopes of C and N in blood and epidermis; 2) elucidate major parameters that influence blood mercury and glutathione peroxidase activity; 3) relate measures of tissue mercury, selenium, and glutathione peroxidase to specific ecological, hematological, morphological, or life history parameters, including season, sex, age, and trophic level. Mercury in both tissues examined is almost exclusively methylmercury. Epidermal concentrations of mercury and selenium reflect their respective amounts in blood, albeit at several times blood concentrations of mercury. The strong association between blood mercury and serum selenium, in conjunction with a lack of significant correlation between blood mercury and glutathione peroxidase, implies that a substantial proportion of blood mercury is affiliated with another selenium-containing moiety or is related to recent dietary intakes (e.g., trophic level, intensive fish consumption). Circulating blood mercury may be described in terms of serum selenium concentration, along with interaction terms among serum selenium, blood d(15)N, and age. Current selenium concentrations in Sarasota Bay dolphins appear adequate for maintenance of blood glutathione peroxidase activity. However, dolphins evidently are subject to seasonal exacerbation of oxidative stress, which might render them more vulnerable to toxic effects of mercury. PMID:19165553

  6. Life history as a source of variation for persistent organic pollutant (POP) patterns in a community of common bottlenose dolphins (Tursiops truncatus) resident to Sarasota Bay, FL.

    PubMed

    Yordy, Jennifer E; Wells, Randall S; Balmer, Brian C; Schwacke, Lori H; Rowles, Teri K; Kucklick, John R

    2010-04-01

    As apex predators within coastal ecosystems, bottlenose dolphins (Tursiops truncatus) are prone to accumulate complex mixtures of persistent organic pollutants (POPs). While substantial variations in POP patterns have been previously observed in dolphin populations separated across regional- and fine-scale geographic ranges, less is known regarding the factors influencing contaminant patterns within localized populations. To assess the variation of POP mixtures that occurs among individuals of a population, polychlorinated biphenyl (PCB), organochlorine pesticide (OCP) and polybrominated diphenyl ether (PBDE) concentrations were measured in blubber and milk of bottlenose dolphins resident to Sarasota Bay, FL, and principal components analysis (PCA) was used to explain mixture variations in relation to age, sex and reproductive maturity. PCA demonstrated significant variations in contaminant mixtures within the resident dolphin community. POP patterns in juvenile dolphins resembled patterns in milk, the primary diet source, and were dominated by lower-halogenated PCBs and PBDEs. A significant correlation between principal component 2 (PC2) and age in male dolphins indicated that juvenile contaminant patterns gradually shifted away from the milk-like pattern over time. Metabolically-refractory PCBs significantly increased with age in male dolphins, whereas PCBs subject to cytochrome p450 1A1 metabolism did not, suggesting that changes in male POP patterns likely resulted from the selective accumulation of persistent POP congeners. Changes to POP patterns were gradual for juvenile females, but changed dramatically at reproductive maturity and gradually shifted back towards pre-parturient profiles thereafter. Congener-specific blubber/milk partition coefficients indicated that lower-halogenated POPs were selectively offloaded into milk and changes in adult female contaminant profiles likely resulted from the offloading of these compounds during the first reproductive

  7. TAMPA BAY MODEL EVALUATION AND ASSESSMENT

    EPA Science Inventory

    A long term goal of multimedia environmental management is to achieve sustainable ecological resources. Progress towards this goal rests on a foundation of science-based methods and data integrated into predictive multimedia, multi-stressor open architecture modeling systems. The...

  8. Tampa Bay International Business Summit Keynote Speech

    NASA Technical Reports Server (NTRS)

    Clary, Christina

    2011-01-01

    A keynote speech outlining the importance of collaboration and diversity in the workplace. The 20-minute speech describes NASA's challenges and accomplishments over the years and what lies ahead. Topics include: diversity and inclusion principles, international cooperation, Kennedy Space Center planning and development, opportunities for cooperation, and NASA's vision for exploration.

  9. TAMPA ASTHMATIC CHILDREN'S STUDY (TACS)

    EPA Science Inventory

    The Tampa Asthmatic Children's Study (TACS) was a pilot research study to assess methodologies and research instruments needed for including asthma as a health outcome in the National Children's Study (NCS). This was one of a series of pilot studies focusing on (a) simple, cos...

  10. 33 CFR 80.757 - Suncoast Keys, FL to Horseshoe Point, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Suncoast Keys, FL to Horseshoe... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Gulf Coast § 80.757 Suncoast Keys, FL to... apply on the bays, bayous, creeks, and marinas from the Suncoast Keys to Horseshoe Point. (b) A...

  11. 33 CFR 80.755 - Anclote, FL to the Suncoast Keys, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Anclote, FL to the Suncoast Keys... Suncoast Keys, FL. (a) Except inside lines specifically described in this section, the 72 COLREGS shall apply on the bays, bayous, creeks, marinas, and rivers from Anclote to the Suncoast Keys. (b) A...

  12. 33 CFR 80.755 - Anclote, FL to the Suncoast Keys, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Anclote, FL to the Suncoast Keys... Suncoast Keys, FL. (a) Except inside lines specifically described in this section, the 72 COLREGS shall apply on the bays, bayous, creeks, marinas, and rivers from Anclote to the Suncoast Keys. (b) A...

  13. 33 CFR 80.757 - Suncoast Keys, FL to Horseshoe Point, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Suncoast Keys, FL to Horseshoe... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Gulf Coast § 80.757 Suncoast Keys, FL to... apply on the bays, bayous, creeks, and marinas from the Suncoast Keys to Horseshoe Point. (b) A...

  14. 33 CFR 80.755 - Anclote, FL to the Suncoast Keys, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Anclote, FL to the Suncoast Keys... Suncoast Keys, FL. (a) Except inside lines specifically described in this section, the 72 COLREGS shall apply on the bays, bayous, creeks, marinas, and rivers from Anclote to the Suncoast Keys. (b) A...

  15. 33 CFR 80.755 - Anclote, FL to the Suncoast Keys, FL.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Anclote, FL to the Suncoast Keys... Suncoast Keys, FL. (a) Except inside lines specifically described in this section, the 72 COLREGS shall apply on the bays, bayous, creeks, marinas, and rivers from Anclote to the Suncoast Keys. (b) A...

  16. 33 CFR 80.755 - Anclote, FL to the Suncoast Keys, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Anclote, FL to the Suncoast Keys... Suncoast Keys, FL. (a) Except inside lines specifically described in this section, the 72 COLREGS shall apply on the bays, bayous, creeks, marinas, and rivers from Anclote to the Suncoast Keys. (b) A...

  17. 33 CFR 80.757 - Suncoast Keys, FL to Horseshoe Point, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Suncoast Keys, FL to Horseshoe... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Gulf Coast § 80.757 Suncoast Keys, FL to... apply on the bays, bayous, creeks, and marinas from the Suncoast Keys to Horseshoe Point. (b) A...

  18. 33 CFR 80.757 - Suncoast Keys, FL to Horseshoe Point, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Suncoast Keys, FL to Horseshoe... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Gulf Coast § 80.757 Suncoast Keys, FL to... apply on the bays, bayous, creeks, and marinas from the Suncoast Keys to Horseshoe Point. (b) A...

  19. 33 CFR 80.757 - Suncoast Keys, FL to Horseshoe Point, FL.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Suncoast Keys, FL to Horseshoe... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Gulf Coast § 80.757 Suncoast Keys, FL to... apply on the bays, bayous, creeks, and marinas from the Suncoast Keys to Horseshoe Point. (b) A...

  20. Sediment distribution patterns and the development of the marsh system rimming a shallow-water shelf embayment: Waccasassa Bay, Levy Co. , FL

    SciTech Connect

    Goodbred, S.L.; Hine, A.C. . Dept. Marine Science); Stumpf, R. . Center for Coastal Geology)

    1993-03-01

    Waccasassa Bay is a wide-mouthed, open basin located at the head of a 35 km wide coastal reentrant along Florida's west-central marsh coast. It is an ideal shallow-water shelf embayment, being characterized as a microtidal, low-wave energy, freshwater-influenced, shallow-water depositional basin. The embayment is rimmed by a contiguous, open-marine Juncus roemerianus marsh, typical of the wetlands along this coast. A series of large, relict, subtidal oyster bioherms traverse the central channel of the embayment, a site at which there are also submarine freshwater springs. Approximately 100 km of high resolution seismic reflection data and side scan sonar data were collected across the embayment. Ground-truthing was performed using probe rod transects and surface sediment grab samples. These data show a high diversity and zonal distribution of bottom sediments, ranging from coarse, shelly sands to detrital coralline algae. However, unlike the nearshore zones north and south of Waccasassa Bay, sediment cover over 90% of the basin is less than 1 m in thickness, and exposed bedrock is common. The Waccasassa Bay basin is largely an exposed shallow limestone shelf. This contrasts with Crystal Bay, a shelf embayment to the south, which contains several distinct coastal facies averaging 3 m in thickness. Initial research onshore shows that the sediment veneer of the coastal marshes along the embayment is thin, on the order of 1-2 m, suggesting long term instability of the system. The marsh sediments also appear to have little siliciclastic content. Vibracore and probe rod transects provide a stratigraphic framework from which to reconstruct the geologic history of these wetlands. The results will allow the Waccasassa Bay marsh/shelf embayment system to be compared with other systems along this coast and elsewhere.

  1. Tampa Electric Neural Network Sootblowing

    SciTech Connect

    Mark A. Rhode

    2003-12-31

    Boiler combustion dynamics change continuously due to several factors including coal quality, boiler loading, ambient conditions, changes in slag/soot deposits and the condition of plant equipment. NO{sub x} formation, Particulate Matter (PM) emissions, and boiler thermal performance are directly affected by the sootblowing practices on a unit. As part of its Power Plant Improvement Initiative program, the US DOE is providing cofunding (DE-FC26-02NT41425) and NETL is the managing agency for this project at Tampa Electric's Big Bend Station. This program serves to co-fund projects that have the potential to increase thermal efficiency and reduce emissions from coal-fired utility boilers. A review of the Big Bend units helped identify intelligent sootblowing as a suitable application to achieve the desired objectives. The existing sootblower control philosophy uses sequential schemes, whose frequency is either dictated by the control room operator or is timed based. The intent of this project is to implement a neural network based intelligent soot-blowing system, in conjunction with state-of-the-art controls and instrumentation, to optimize the operation of a utility boiler and systematically control boiler fouling. Utilizing unique, on-line, adaptive technology, operation of the sootblowers can be dynamically controlled based on real-time events and conditions within the boiler. This could be an extremely cost-effective technology, which has the ability to be readily and easily adapted to virtually any pulverized coal fired boiler. Through unique on-line adaptive technology, Neural Network-based systems optimize the boiler operation by accommodating equipment performance changes due to wear and maintenance activities, adjusting to fluctuations in fuel quality, and improving operating flexibility. The system dynamically adjusts combustion setpoints and bias settings in closed-loop supervisory control to simultaneously reduce NO{sub x} emissions and improve heat rate

  2. Tampa Electric Neural Network Sootblowing

    SciTech Connect

    Mark A. Rhode

    2004-09-30

    Boiler combustion dynamics change continuously due to several factors including coal quality, boiler loading, ambient conditions, changes in slag/soot deposits and the condition of plant equipment. NOx formation, Particulate Matter (PM) emissions, and boiler thermal performance are directly affected by the sootblowing practices on a unit. As part of its Power Plant Improvement Initiative program, the US DOE is providing cofunding (DE-FC26-02NT41425) and NETL is the managing agency for this project at Tampa Electric's Big Bend Station. This program serves to co-fund projects that have the potential to increase thermal efficiency and reduce emissions from coal-fired utility boilers. A review of the Big Bend units helped identify intelligent sootblowing as a suitable application to achieve the desired objectives. The existing sootblower control philosophy uses sequential schemes, whose frequency is either dictated by the control room operator or is timed based. The intent of this project is to implement a neural network based intelligent sootblowing system, in conjunction with state-of-the-art controls and instrumentation, to optimize the operation of a utility boiler and systematically control boiler fouling. Utilizing unique, on-line, adaptive technology, operation of the sootblowers can be dynamically controlled based on real-time events and conditions within the boiler. This could be an extremely cost-effective technology, which has the ability to be readily and easily adapted to virtually any pulverized coal fired boiler. Through unique on-line adaptive technology, Neural Network-based systems optimize the boiler operation by accommodating equipment performance changes due to wear and maintenance activities, adjusting to fluctuations in fuel quality, and improving operating flexibility. The system dynamically adjusts combustion setpoints and bias settings in closed-loop supervisory control to simultaneously reduce NO{sub x} emissions and improve heat rate around

  3. Tampa Electric Neural Network Sootblowing

    SciTech Connect

    Mark A. Rhode

    2004-03-31

    Boiler combustion dynamics change continuously due to several factors including coal quality, boiler loading, ambient conditions, changes in slag/soot deposits and the condition of plant equipment. NOx formation, Particulate Matter (PM) emissions, and boiler thermal performance are directly affected by the sootblowing practices on a unit. As part of its Power Plant Improvement Initiative program, the US DOE is providing co-funding (DE-FC26-02NT41425) and NETL is the managing agency for this project at Tampa Electric's Big Bend Station. This program serves to co-fund projects that have the potential to increase thermal efficiency and reduce emissions from coal-fired utility boilers. A review of the Big Bend units helped identify intelligent sootblowing as a suitable application to achieve the desired objectives. The existing sootblower control philosophy uses sequential schemes, whose frequency is either dictated by the control room operator or is timed based. The intent of this project is to implement a neural network based intelligent sootblowing system, in conjunction with state-of-the-art controls and instrumentation, to optimize the operation of a utility boiler and systematically control boiler fouling. Utilizing unique, on-line, adaptive technology, operation of the sootblowers can be dynamically controlled based on real-time events and conditions within the boiler. This could be an extremely cost-effective technology, which has the ability to be readily and easily adapted to virtually any pulverized coal fired boiler. Through unique on-line adaptive technology, Neural Network-based systems optimize the boiler operation by accommodating equipment performance changes due to wear and maintenance activities, adjusting to fluctuations in fuel quality, and improving operating flexibility. The system dynamically adjusts combustion setpoints and bias settings in closed-loop supervisory control to simultaneously reduce NO{sub x} emissions and improve heat rate around

  4. Tampa Electric Neural Network Sootblowing

    SciTech Connect

    Mark A. Rhode

    2002-09-30

    Boiler combustion dynamics change continuously due to several factors including coal quality, boiler loading, ambient conditions, changes in slag/soot deposits and the condition of plant equipment. NO{sub x} formation, Particulate Matter (PM) emissions, and boiler thermal performance are directly affected by the sootblowing practices on a unit. As part of its Power Plant Improvement Initiative program, the US DOE is providing cofunding (DE-FC26-02NT41425) and NETL is the managing agency for this project at Tampa Electric's Big Bend Station. This program serves to co-fund projects that have the potential to increase thermal efficiency and reduce emissions from coal-fired utility boilers. A review of the Big Bend units helped identify intelligent sootblowing as a suitable application to achieve the desired objectives. The existing sootblower control philosophy uses sequential schemes, whose frequency is either dictated by the control room operator or is timed based. The intent of this project is to implement a neural network based intelligent soot-blowing system, in conjunction with state-of-the-art controls and instrumentation, to optimize the operation of a utility boiler and systematically control boiler fouling. Utilizing unique, online, adaptive technology, operation of the sootblowers can be dynamically controlled based on real-time events and conditions within the boiler. This could be an extremely cost-effective technology, which has the ability to be readily and easily adapted to virtually any pulverized coal fired boiler. Through unique on-line adaptive technology, Neural Network-based systems optimize the boiler operation by accommodating equipment performance changes due to wear and maintenance activities, adjusting to fluctuations in fuel quality, and improving operating flexibility. The system dynamically adjusts combustion setpoints and bias settings in closed-loop supervisory control to simultaneously reduce {sub x} emissions and improve heat rate

  5. Tampa Federal Offender Rehabilitation. Final Report.

    ERIC Educational Resources Information Center

    Tallant, Kyle M.; And Others

    Vocational rehabilitation counselors were assigned on a full-time basis to the Federal Probation Office in Tampa, Florida, to work with probationers and releasees as soon as the case files were received in the probation office. This 3-year project was part of a cooperative research program conducted in seven states. A total of 247 offenders…

  6. Photocopy of drawing (original drawing of MacDill Field in possession ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Photocopy of drawing (original drawing of MacDill Field in possession of MacDill Air Force Base, Civil Engineering, Tampa, Florida; 1952 architectural drawings by Strategic Air Command, MacDill Air Force Base) BASE LAYOUT, 1952 - MacDill Air Force Base, Bounded by City of Tampa North, Tampa Bay South, Old Tampa Bay West, & Hillsborough Bay East, Tampa, Hillsborough County, FL

  7. A digital model of the Floridan Aquifer, north of Tampa, Florida

    USGS Publications Warehouse

    Robertson, A.F.; Mallory, M.J.

    1977-01-01

    A regional ground-water model of the Floridan aquifer was constructed for an 875-square-mile portion of the rapidly developing area north of Tampa Bay. The digital model was calibrated by comparing observed (March 1974 and May 1975) and computed potentiometric heads. A good comparison was obtained by adjusting leakance and transmissivity. Differences between the computed and measured potentiometric surface were generally less than 3 feet, with a maximum error of 15 feet. The calibrated model may be used as a predictive tool. For example, the model could be used to evaluate the regional effects of increased ground-water withdrawal on the Florida aquifer. (Woodard-USGS)

  8. EVIDENCE THAT PHOSPHORUS LIMITS PHYTOPLANKTON GROWTH IN A GULF OF MEXICO ESTUARY: PENSACOLA BAY, FLORIDA

    EPA Science Inventory

    Nutrient limitation bioassays were conducted on six dates from November 1998 to September 1999 at two sites, including oligohaline (Upper Bay) and mesohaline regions (Lower Bay), in Pensacola Bay, FL. Phytoplankton growth responses (measured as changes in chlorophyll a concentra...

  9. Status of Tampa Electric Company IGCC Project

    SciTech Connect

    Jenkins, S.D.

    1992-10-01

    Tampa Electric Company will utilize Integrated Gasification Combined Cycle technology for its new Polk Power Station Unit {number_sign}1. The project is partially funded under the Department of Energy Clean Coal Technology Program Round III. This paper describes the technology to be used, process details, demonstration of a new hot gas clean-up system, and the schedule, leading to commercial operation in July 1996.

  10. Status of Tampa Electric Company IGCC Project

    SciTech Connect

    Jenkins, S.D.

    1992-01-01

    Tampa Electric Company will utilize Integrated Gasification Combined Cycle technology for its new Polk Power Station Unit [number sign]1. The project is partially funded under the Department of Energy Clean Coal Technology Program Round III. This paper describes the technology to be used, process details, demonstration of a new hot gas clean-up system, and the schedule, leading to commercial operation in July 1996.

  11. ENSO IMPACTS ON SALINITY IN TAMPA BAY, FLORIDA. (R825197)

    EPA Science Inventory

    The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Concl...

  12. 33 CFR 165.704 - Safety Zone; Tampa Bay, Florida.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    .... Petersburg. (1) For vessels loaded with LPG and bound for the LPG receiving terminal in Port Sutton the... Lighted Buoys “7” and “8” and proceeds north through Hillsborough Cut “C”, Port Sutton Entrance Channel, and ends at the Port Sutton LPG facility. (2) For vessels loaded with LPG and bound for the...

  13. 33 CFR 165.704 - Safety Zone; Tampa Bay, Florida.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    .... Petersburg. (1) For vessels loaded with LPG and bound for the LPG receiving terminal in Port Sutton the... Lighted Buoys “7” and “8” and proceeds north through Hillsborough Cut “C”, Port Sutton Entrance Channel, and ends at the Port Sutton LPG facility. (2) For vessels loaded with LPG and bound for the...

  14. 33 CFR 165.704 - Safety Zone; Tampa Bay, Florida.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    .... Petersburg. (1) For vessels loaded with LPG and bound for the LPG receiving terminal in Port Sutton the... Lighted Buoys “7” and “8” and proceeds north through Hillsborough Cut “C”, Port Sutton Entrance Channel, and ends at the Port Sutton LPG facility. (2) For vessels loaded with LPG and bound for the...

  15. 33 CFR 165.704 - Safety Zone; Tampa Bay, Florida.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    .... Petersburg. (1) For vessels loaded with LPG and bound for the LPG receiving terminal in Port Sutton the... Lighted Buoys “7” and “8” and proceeds north through Hillsborough Cut “C”, Port Sutton Entrance Channel, and ends at the Port Sutton LPG facility. (2) For vessels loaded with LPG and bound for the...

  16. 33 CFR 165.704 - Safety Zone; Tampa Bay, Florida.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    .... Petersburg. (1) For vessels loaded with LPG and bound for the LPG receiving terminal in Port Sutton the... Lighted Buoys “7” and “8” and proceeds north through Hillsborough Cut “C”, Port Sutton Entrance Channel, and ends at the Port Sutton LPG facility. (2) For vessels loaded with LPG and bound for the...

  17. Estimating benefits in a recovering estuary: Tampa Bay, Florida

    EPA Science Inventory

    Restoration and preservation of riparian forests and coastal marshes provides nutrient removal and other biochemical and physical functions which may preclude, reduce, or delay the need for additional water treatment, while also protecting human health. We examined the ecosystem ...

  18. Dye trace and bacteriological testing of sinkholes: Sulphur Springs, Tampa, Florida

    NASA Astrophysics Data System (ADS)

    Wallace, R. E.

    1993-12-01

    This paper summarizes over four years of studies and testing of a sinkhole/spring system in north Tampa. Sulphur Springs Pool delivers an average of 95 million l/d to the Hillsborough River, which is tributary to Tampa Bay. In 1986, owing to increasingly erratic bacterial levels at the natural bathing area adjacent to Sulphur Springs, the Hillsborough County Health Department closed the pool for swimming. The City of Tampa, Southwest Florida Water Management District (SWFWMD), Hillsborough County Environmental Protection Commission, and the United States Geological Survey have gathered data in an attempt to better understand the system and possible sources of contamination. The Sulphur Springs Action League is a civic group in the area, which has an objective of reopening the pool for recreational purposes. Environmental Engineering Consultants, Inc. provided pro bono technical assistance and expertise in assisting the Action League with its goal. The Action League obtained a grant from SWFWMD to outfit underwater divers for sinkhole exploration as well as water quality and dye trace analysis. The main suspects for bacterial contamination of the pool were two significant sinkholes located 1950 and 2300 m north of the spring. A series of dye tests and water-quality tests were performed. It was estimated that the underground velocity of water was between 90 100 m/h. Using a dye trace, bacteria testing, and travel time estimating, a new source of contamination was found in a Department of Transportation (DOT) stormwater retention basin in which a sinkhole had opened up and was receiving stormwater. The two significant sinkholes received stormwater from commercial and residential areas, and this stormwater brings a large amount of bacteria into the sinkhole, which funnels into the underground system and induces a bacteria spike at Sulphur Springs pool that exceeds the bathing water standards. The City of Tampa has constructed an experimental initial flush capture basin

  19. 77 FR 65623 - Security Zones; USCGC WILLIAM FLORES Commissioning Ceremony, Ybor Channel; Tampa, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-30

    ... Acronyms DHS Department of Homeland Security FR Federal Register NPRM Notice of Proposed Rulemaking A... have questions on this temporary final rule, call or email Boatswains Mate Second Class Gregory...

  20. PEER REVIEW AS A QA TOOL FOR PHOTO INTERPRETATION (PRESENTED TAMPA, FL)

    EPA Science Inventory

    Remotely Sensed (RS) images are used in may ways in the EPA. Eventually, the photo may be "interpreted," When images are interpreted, attempts are made by humans to determine what is on the ground (or in the air) by examining the photo or image, and the implementation ...

  1. 77 FR 50926 - Security Zones; Certain Dangerous Cargo Vessels, Tampa, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-23

    ... DHS Department of Homeland Security CDC Certain Dangerous Cargo FR Federal Register NPRM Notice of... boarding and inspection of the vessel and persons onboard. The security zones would be enforced from 12:01... the vessel and persons onboard. (4) The Coast Guard will provide notice of the regulated areas...

  2. Near Road Tree Cover in the Tampa, FL EnviroAtlas Community Area

    EPA Science Inventory

    Through EnviroAtlas, EPA and its partners seek to effectively measure and communicate the type, quality, and extent of services that humans receive from ecosystems so that their true value can be considered in decision-making. One of the ecosystem services examined in the communi...

  3. 78 FR 14649 - Amendment of Class B Airspace Description; Tampa, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-07

    ... established as a ``Terminal Control Area (TCA)'' on September 20, 1990 (55 FR 19226, May 8, 1990). In 1993, as part of the Airspace Reclassification Final Rule (56 FR 65638, December 17, 1991), the term ``terminal... ``significant rule'' under Department of Transportation (DOT) Regulatory Policies and Procedures (44 FR...

  4. 33 CFR 165.760 - Security Zones; Tampa Bay, Port of Tampa, Port of Saint Petersburg, Port Manatee, Rattlesnake...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... a vessel required to comply with 33 CFR part 120. Designated representative means Coast Guard Patrol..., 082°39.26′ W; and the bridge structure columns, base and dolphins. This zone is specific to the bridge structure and dolphins and does not include waters adjacent to the bridge columns or dolphins outside of...

  5. 33 CFR 165.760 - Security Zones; Tampa Bay, Port of Tampa, Port of Saint Petersburg, Port Manatee, Rattlesnake...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... a vessel required to comply with 33 CFR part 120. Designated representative means Coast Guard Patrol..., 082°39.26′ W; and the bridge structure columns, base and dolphins. This zone is specific to the bridge structure and dolphins and does not include waters adjacent to the bridge columns or dolphins outside of...

  6. 33 CFR 165.760 - Security Zones; Tampa Bay, Port of Tampa, Port of Saint Petersburg, Port Manatee, Rattlesnake...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... a vessel required to comply with 33 CFR part 120. Designated representative means Coast Guard Patrol..., 082°39.26′ W; and the bridge structure columns, base and dolphins. This zone is specific to the bridge structure and dolphins and does not include waters adjacent to the bridge columns or dolphins outside of...

  7. 33 CFR 165.760 - Security Zones; Tampa Bay, Port of Tampa, Port of Saint Petersburg, Port Manatee, Rattlesnake...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... a vessel required to comply with 33 CFR part 120. Designated representative means Coast Guard Patrol..., 082°39.26′ W; and the bridge structure columns, base and dolphins. This zone is specific to the bridge structure and dolphins and does not include waters adjacent to the bridge columns or dolphins outside of...

  8. 33 CFR 165.760 - Security Zones; Tampa Bay, Port of Tampa, Port of Saint Petersburg, Port Manatee, Rattlesnake...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... a vessel required to comply with 33 CFR part 120. Designated representative means Coast Guard Patrol..., 082°39.26′ W; and the bridge structure columns, base and dolphins. This zone is specific to the bridge structure and dolphins and does not include waters adjacent to the bridge columns or dolphins outside of...

  9. VIEW OF WORKBENCH IN THE SECOND INTERIOR BAY, LOOKING NORTHWEST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF WORKBENCH IN THE SECOND INTERIOR BAY, LOOKING NORTHWEST - Eglin Air Force Base, Motor Repair Shop, Northwest of Flager Road, Chisk Lane & southern edge of Weekly Bayou, Valparaiso, Okaloosa County, FL

  10. DETAIL, NORTHERNMOST SHOP BAY DOORS, WEST FACADE, LOOKING EAST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    DETAIL, NORTHERNMOST SHOP BAY DOORS, WEST FACADE, LOOKING EAST - Eglin Air Force Base, Motor Repair Shop, Northwest of Flager Road, Chisk Lane & southern edge of Weekly Bayou, Valparaiso, Okaloosa County, FL

  11. Hydrogeology of the Sulphur Springs area, Tampa, Florida

    USGS Publications Warehouse

    Stewart, J.W.; Mills, L.R.

    1984-01-01

    The Sulfur Springs area includes about 56 square miles in west-central Hillsborough County, Florida. The north-central part of the city of Tampa is highly urbanized; the north-west part of the area is rural or undeveloped. The area has numerous sinkholes, two of which are used as retention basins for urban storm runoff. An intermittent stream discharges into a sinkhole that is hydraulically connected with the Floridian aquifer. A well-developed cavity system occurs in the upper part of the aquifer in the southwestern and southeastern parts of the area. Groundwater velocities of 4,200 to 9,200 feet per day were determined from dye tests conducted in a sinkhole area north of Sulfur Springs. Sulfur Springs provides the city of Tampa a supplemental water supply of 20 million gallons per day. Periodically, the spring pool is closed to swimming because of the high bacteria counts in the water. The source of bacteria appears to be an internally drained sinkhole area north of the spring. In 1980, groundwater use in the study area, excluding withdrawals from Sulphur Springs, was 7.2 million gallons per day, largely for public water supplies. The city of Tampa pumped an average of 48.5 million gallons per day from the Tampa Dam Reservoir on the Hillsborough River. (USGS)

  12. EXPOSURE ASSESSMENT FINDINGS FROM THE TAMPA ASTHMATIC CHILDREN'S STUDY (TACS)

    EPA Science Inventory

    The Tampa Asthmatic Children's Study (TACS) was a pilot study that focused on developing and evaluating air pollution exposure assessment methods and participant recruiting tools. The four-week study was performed in October and November, 2003. The study involved repeated daily...

  13. PILOT STUDY: THE TAMPA ASTHMATIC CHILDREN'S STUDY (TACS)

    EPA Science Inventory

    The Tampa Asthmatic Children's Study (TACS) was a pilot research study that focused on developing and evaluating air pollution exposure assessment methods and participant recruiting tools for children in the age range of 1-5 years old. The pilot study focused on (a) simple, cost-...

  14. PRELIMINARY EXPOSURE ASSESSMENT FINDINGS FROM THE TAMPA ASTHMATIC CHILDREN'S STUDY

    EPA Science Inventory

    The Tampa Asthmatic Children's Study (TACS) was a pilot study that focused on developing and evaluating air pollution exposure assessment methods and participant recruiting tools. The four-week study was performed in October and November, 2003. The study involved repeated daily...

  15. Organic Composition of Size-Segregated Aerosols Sampled During the 2002 Bay Regional Atmospheric Chemistry Experiment (BRACE), Florida, USA

    NASA Astrophysics Data System (ADS)

    Tremblay, R. T.; Zika, R. G.

    2003-04-01

    Aerosol samples were collected for the analysis of organic source markers using non-rotating Micro Orifice Uniform Deposit Impactors (MOUDI) as part of the Bay Regional Atmospheric Chemistry Experiment (BRACE) in Tampa, FL, USA. Daily samples were collected 12 m above ground at a flow rate of 30 lpm throughout the month of May 2002. Aluminum foil discs were used to sample aerosol size fractions with aerodynamic cut diameter of 18, 10, 5.6, 3.2, 1.8, 1.0, 0.56, 0.32, 0.17 and 0.093 um. Samples were solvent extracted using a mixture of dichloromethane/acetone/hexane, concentrated and then analyzed using gas chromatography-mass spectrometry (GC/MS). Low detection limits were achieved using a HP Programmable Temperature Vaporizing inlet (PTV) and large volume injections (80ul). Excellent chromatographic resolution was obtained using a 60 m long RTX-5MS, 0.25 mm I.D. column. A quantification method was built for over 90 organic compounds chosen as source markers including straight/iso/anteiso alkanes and polycyclic aromatic hydrocarbons (PAH). The investigation of potential aerosol sources for different particle sizes using known organic markers and source profiles will be presented. Size distributions of carbon preference indices (CPI), percent wax n-alkanes (%WNA) and concentration of selected compounds will be discussed. Also, results will be compared with samples acquired in different environments including the 1999 Atlanta SuperSite Experiment, GA, USA.

  16. 75 FR 33804 - Update to Notice of Financial Institutions for Which the Federal Deposit Insurance Corporation...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-15

    ..., 1992 issue of the Federal Register (57 FR 29491). For further information concerning the identification... Florida-- Naples FL 5/28/2010 Southwest. 10243 Bank of Florida--Tampa Tampa FL 5/28/2010 10244 Granite Community Granite Bay CA 5/28/2010 Bank, NA. 10245 Sun West Bank......... Las Vegas NV 5/28/2010...

  17. 78 FR 43197 - Duke Energy Florida, Inc.; Florida Power & Light Company; Tampa Electric Company; Orlando...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-19

    ... Company; Orlando Utilities Commission; Notice of Compliance Filings Take notice that on July 10, 2013, Duke Energy Florida, Inc., Florida Power & Light Company, Tampa Electric Company, and Orlando...

  18. 33 CFR 80.740 - Long Key, FL to Cape Sable, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Long Key, FL to Cape Sable, FL... INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Gulf Coast § 80.740 Long Key, FL to Cape Sable, FL. A line drawn from the microwave tower charted on Long Key at approximate position latitude 24°48.8′...

  19. 33 CFR 80.740 - Long Key, FL to Cape Sable, FL.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Long Key, FL to Cape Sable, FL... INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Gulf Coast § 80.740 Long Key, FL to Cape Sable, FL. A line drawn from the microwave tower charted on Long Key at approximate position latitude 24°48.8′...

  20. 33 CFR 80.740 - Long Key, FL to Cape Sable, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Long Key, FL to Cape Sable, FL... INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Gulf Coast § 80.740 Long Key, FL to Cape Sable, FL. A line drawn from the microwave tower charted on Long Key at approximate position latitude 24°48.8′...

  1. 33 CFR 80.740 - Long Key, FL to Cape Sable, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Long Key, FL to Cape Sable, FL... INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Gulf Coast § 80.740 Long Key, FL to Cape Sable, FL. A line drawn from the microwave tower charted on Long Key at approximate position latitude 24°48.8′...

  2. 33 CFR 80.740 - Long Key, FL to Cape Sable, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Long Key, FL to Cape Sable, FL... INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Gulf Coast § 80.740 Long Key, FL to Cape Sable, FL. A line drawn from the microwave tower charted on Long Key at approximate position latitude 24°48.8′...

  3. 33 CFR 80.727 - Cape Canaveral, FL to Miami Beach, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Cape Canaveral, FL to Miami Beach, FL. 80.727 Section 80.727 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND..., FL to Miami Beach, FL. (a) A line drawn across the seaward extremity of the Port Canaveral...

  4. 46 CFR 7.95 - St. Johns Point, FL to Miami Beach, FL.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 1 2012-10-01 2012-10-01 false St. Johns Point, FL to Miami Beach, FL. 7.95 Section 7.95 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY LINES Atlantic Coast § 7.95 St. Johns Point, FL to Miami Beach, FL. (a) A line drawn from the...

  5. 46 CFR 7.95 - St. Johns Point, FL to Miami Beach, FL.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 1 2011-10-01 2011-10-01 false St. Johns Point, FL to Miami Beach, FL. 7.95 Section 7.95 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY LINES Atlantic Coast § 7.95 St. Johns Point, FL to Miami Beach, FL. (a) A line drawn from the...

  6. 33 CFR 80.727 - Cape Canaveral, FL to Miami Beach, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Cape Canaveral, FL to Miami Beach, FL. 80.727 Section 80.727 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND..., FL to Miami Beach, FL. (a) A line drawn across the seaward extremity of the Port Canaveral...

  7. 33 CFR 80.727 - Cape Canaveral, FL to Miami Beach, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Cape Canaveral, FL to Miami Beach, FL. 80.727 Section 80.727 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND..., FL to Miami Beach, FL. (a) A line drawn across the seaward extremity of the Port Canaveral...

  8. 33 CFR 80.727 - Cape Canaveral, FL to Miami Beach, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Cape Canaveral, FL to Miami Beach, FL. 80.727 Section 80.727 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND..., FL to Miami Beach, FL. (a) A line drawn across the seaward extremity of the Port Canaveral...

  9. 33 CFR 80.727 - Cape Canaveral, FL to Miami Beach, FL.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Cape Canaveral, FL to Miami Beach, FL. 80.727 Section 80.727 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND..., FL to Miami Beach, FL. (a) A line drawn across the seaward extremity of the Port Canaveral...

  10. 46 CFR 7.95 - St. Johns Point, FL to Miami Beach, FL.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false St. Johns Point, FL to Miami Beach, FL. 7.95 Section 7.95 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY LINES Atlantic Coast § 7.95 St. Johns Point, FL to Miami Beach, FL. (a) A line drawn from the...

  11. 77 FR 19001 - Foreign-Trade Zone 79-Tampa, FL; Application for Reorganization/Expansion Under Alternative Site...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-29

    ... the zone under the alternative site framework (ASF) adopted by the Board (74 FR 1170, 1/12/09 (correction 74 FR 3987, 1/22/09); 75 FR 71069-71070, 11/22/10). The ASF is an option for grantees for the..., 2012. FTZ 79 was approved by the Board on May 29, 1982 (Board Order 192, 47 FR 24760, 6/8/82)...

  12. Three magnetic reversals recorded in an 80-m organic-rich core from a sinkhole east of Tampa, FL

    SciTech Connect

    McCartan, L.; Rubin, M. ); Liddicoat, J.C. ); Bond, P.A.; Osmond, J.K. )

    1994-03-01

    Preliminary analysis of a continuous 80-m core from a phosphate mines at Bartow, Fla., indicates as many as three magnetically reversed and five normal sections and five upward-fining depositional sequences. The paleomagnetic data are based on analysis of 16 samples; 100 additional samples have been taken for more detailed analysis. The authors estimate the maximum age to be 1.1--2.6 Ma. The core is composed of massive to faintly laminated beds of black to dark-brown, organic-rich, fine quartz sand and silt, kaolinitic and organic clay, and peat, Only the top meter is within the 40 Ka range of [sup 14]C; a sample at 8.5 m yielded an age estimate close to 350,000 years, the limit of the open-system U/Th dating technique. Rates of deposition are 2--7.5 cm/1,000 years, which is much slower than rates in late Quaternary lakes elsewhere in Florida. There is no clear relation between the magnetic stratigraphy and the depositional stratigraphy. The authors assume that most of the sand was derived from dissolved limestone around the sinkhole, but some of the sand as well as the silt and clay may be windborne. Textural variations may be coincident with differences in rainfall, and this concept will be investigated through pollen analysis of approximately 800 samples. The one sample examined so far is from the bottom of the core, and it has an equivocal biostratigraphic age. The high grass pollen content indicates a drier climate than at present; it is from a long interval of peat with sand, which is typically windborne in dry climates.

  13. 77 FR 50929 - Security Zones; 2012 RNC Bridge Security Zones, Captain of the Port St. Petersburg Zone, Tampa, FL

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-23

    ... of Homeland Security FR Federal Register NPRM Notice of Proposed Rulemaking A. Regulatory Information... subversive acts, accidents, or other causes of a similar nature, intended to harm people, damage property, or..., accidents, or other causes of a similar nature, intended to harm people, damage property, or disrupt...

  14. 1991 P/M in aerospace and defense technologies; Proceedings of the Symposium, Tampa, FL, Mar. 4-6, 1991

    SciTech Connect

    Not Available

    1991-01-01

    The present conference discusses high-performance injection-molded metal components, the importance of phosphorus in P/M alloys, particle-metallurgy steels for antifriction bearings, P/M processing of metal-matrix composites (MMCs), SiC- and B4C-reinforced Mg MMCs for satellite applications, N13Al-based intermetallic MMCs, the synthesis and properties of nanophase ceramics, MMC spray-forming, the microstructure and properties of spray-cast Cu alloys, and the spray casting of hypoeutectic Cu-Cr alloy. Also discussed are the application of the Osprey preform process to light alloys and MMCs, P/M in lightweight aircraft engine components, the fabrication of oriented single-crystal wafer stock from Ni-Al-Mo-X alloy powders, higher-performance P/M Be materials for aerospace applications, the characteristics of electrodischarge compaction, and fatigue crack propagation in dispersion-strengthened P/M Al alloys at elevated and room temperatures.

  15. System design of a photovoltaic flat-panel applications experiment at Busch Gardens, Tampa, Florida. Final report

    SciTech Connect

    Not Available

    1980-03-01

    The detailed system design for a photovoltaic roof shingle module installation at Busch Gardens, Tampa, FL, (also known as the Dark Continent) is discussed. This installation of 4312 shingle solar cell modules of a second-generation design, which was developed under this contract, produces 29.5 kW of peak output at 237 Vdc under Standard Operating Conditions (SOC) with an NOCT at 61/sup 0/C. With a total gross roof area of 330.7 m/sup 2/, this installation yields an areal specific power output of 89.2 watt/m/sup 2/ at SOC. The system which uses an improved, low loss direct-coupled, line-commutated inverter controlled to operate the solar array maximum power operating point, delivers 208Y/120 volt, 3 phase ac in parallel with the Busch Gardens distribution network. The calculated annual ac energy m/sup 2/. The resulting overall system conversion efficiency of 9.2% is considered high for a system using large area circular solar cells.

  16. 33 CFR 80.735 - Miami, FL to Long Key, FL.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Miami, FL to Long Key, FL. 80.735... NAVIGATION RULES COLREGS DEMARCATION LINES Seventh District § 80.735 Miami, FL to Long Key, FL. (a) A line... Creek to the radar dome charted on Long Key at approximate position latitude 24°49.3′ N., longitude...

  17. 33 CFR 80.735 - Miami, FL to Long Key, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Miami, FL to Long Key, FL. 80.735... NAVIGATION RULES COLREGS DEMARCATION LINES Seventh District § 80.735 Miami, FL to Long Key, FL. (a) A line... Creek to the radar dome charted on Long Key at approximate position latitude 24°49.3′ N. longitude...

  18. 33 CFR 80.735 - Miami, FL to Long Key, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Miami, FL to Long Key, FL. 80.735... NAVIGATION RULES COLREGS DEMARCATION LINES Seventh District § 80.735 Miami, FL to Long Key, FL. (a) A line... Creek to the radar dome charted on Long Key at approximate position latitude 24°49.3′ N., longitude...

  19. 33 CFR 80.735 - Miami, FL to Long Key, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Miami, FL to Long Key, FL. 80.735... NAVIGATION RULES COLREGS DEMARCATION LINES Seventh District § 80.735 Miami, FL to Long Key, FL. (a) A line... Creek to the radar dome charted on Long Key at approximate position latitude 24°49.3′ N. longitude...

  20. 33 CFR 80.735 - Miami, FL to Long Key, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Miami, FL to Long Key, FL. 80.735... NAVIGATION RULES COLREGS DEMARCATION LINES Seventh District § 80.735 Miami, FL to Long Key, FL. (a) A line... Creek to the radar dome charted on Long Key at approximate position latitude 24°49.3′ N. longitude...

  1. 46 CFR 7.95 - St. Johns Point, FL to Miami Beach, FL.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 1 2014-10-01 2014-10-01 false St. Johns Point, FL to Miami Beach, FL. 7.95 Section 7... LINES Atlantic Coast § 7.95 St. Johns Point, FL to Miami Beach, FL. (a) A line drawn from the seaward extremity of St. Augustine Inlet north jetty to latitude 29°55′ N. longitude 81°15.3′ W. (St....

  2. 46 CFR 7.95 - St. Johns Point, FL to Miami Beach, FL.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 1 2013-10-01 2013-10-01 false St. Johns Point, FL to Miami Beach, FL. 7.95 Section 7... LINES Atlantic Coast § 7.95 St. Johns Point, FL to Miami Beach, FL. (a) A line drawn from the seaward extremity of St. Augustine Inlet north jetty to latitude 29°55′ N. longitude 81°15.3′ W. (St....

  3. 33 CFR 80.723 - Amelia Island, FL to Cape Canaveral, FL.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Amelia Island, FL to Cape... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Seventh District § 80.723 Amelia Island, FL to Cape Canaveral, FL. (a) A line drawn from the southernmost extremity of Amelia Island to...

  4. 33 CFR 80.723 - Amelia Island, FL to Cape Canaveral, FL.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Amelia Island, FL to Cape... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Seventh District § 80.723 Amelia Island, FL to Cape Canaveral, FL. (a) A line drawn from the southernmost extremity of Amelia Island to...

  5. 33 CFR 80.723 - Amelia Island, FL to Cape Canaveral, FL.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Amelia Island, FL to Cape... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Seventh District § 80.723 Amelia Island, FL to Cape Canaveral, FL. (a) A line drawn from the southernmost extremity of Amelia Island to...

  6. 33 CFR 80.723 - Amelia Island, FL to Cape Canaveral, FL.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Amelia Island, FL to Cape... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Seventh District § 80.723 Amelia Island, FL to Cape Canaveral, FL. (a) A line drawn from the southernmost extremity of Amelia Island to...

  7. 33 CFR 80.723 - Amelia Island, FL to Cape Canaveral, FL.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Amelia Island, FL to Cape... SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Seventh District § 80.723 Amelia Island, FL to Cape Canaveral, FL. (a) A line drawn from the southernmost extremity of Amelia Island to...

  8. Tampa Electric Company Polk Power Station IGCC project: Project status

    SciTech Connect

    McDaniel, J.E.; Carlson, M.R.; Hurd, R.; Pless, D.E.; Grant, M.D.

    1997-12-31

    The Tampa Electric Company Polk Power Station is a nominal 250 MW (net) Integrated Gasification Combined Cycle (IGCC) power plant located to the southeast of Tampa, Florida in Polk County, Florida. This project is being partially funded under the Department of Energy`s Clean Coal Technology Program pursuant to a Round II award. The Polk Power Station uses oxygen-blown, entrained-flow IGCC technology licensed from Texaco Development Corporation to demonstrate significant reductions of SO{sub 2} and NO{sub x} emissions when compared to existing and future conventional coal-fired power plants. In addition, this project demonstrates the technical feasibility of commercial scale IGCC and Hot Gas Clean Up (HGCU) technology. The Polk Power Station achieved ``first fire`` of the gasification system on schedule in mid-July, 1996. Since that time, significant advances have occurred in the operation of the entire IGCC train. This paper addresses the operating experiences which occurred in the start-up and shakedown phase of the plant. Also, with the plant being declared in commercial operation as of September 30, 1996, the paper discusses the challenges encountered in the early phases of commercial operation. Finally, the future plans for improving the reliability and efficiency of the Unit in the first quarter of 1997 and beyond, as well as plans for future alternate fuel test burns, are detailed. The presentation features an up-to-the-minute update on actual performance parameters achieved by the Polk Power Station. These parameters include overall Unit capacity, heat rate, and availability. In addition, the current status of the start-up activities for the HGCU portion of the plant is discussed.

  9. THE TAMPA BAY PHYSICAL OCEANOGRAPHIC REAL-TIME SYSTEM (PORTS). (R825197)

    EPA Science Inventory

    The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Concl...

  10. OIL SPILL MODELING IN TAMPA BAY, FLORIDA: AN INTEGRATED APPROACH. (R825197)

    EPA Science Inventory

    The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Concl...