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1

Oxygen isotopes as tracers of tektite source rocks: An example from the Ivory Coast tektites and Lake Bosumtwi Crater  

NASA Technical Reports Server (NTRS)

Oxygen isotope studies of tektites and impact glasses provide an important tool to help in identifying the target lithologies for terrestrial impacts, including the K-T boundary impact. However, such studies may be complicated by modification of the original oxygen isotope values of some source rocks during the tektite formation process either by vapor fractionation or incorporation of meteoric water. To further investigate the relationship between the oxygen isotopic composition of tektites and their source rocks, Ivory Coast tektites and samples of impact glasses and bedrock lithologies from the Bosumtwi Crater in Ghana--which is widely believed to be the source crater for the Ivory Coast tektites--were studied. Our preliminary results suggest that the phyllites and metagraywackes from the Bosumtwi Crater were the predominant source materials for the impact glasses and tektites and that no significant oxygen isotope modification (less than 1 percent delta(O-18)) took place during impact melting. This contrasts with previous studies of moldavites and Australasian tektites and their sedimentary source materials which suggests a 4 to 5 percent lowering of delta(O-18) due to meteoric water incorporation during impact melting.

Blum, Joel D.; Koeberl, Christian; Chamberlain, C. Page

1993-01-01

2

Osmium isotopes in Ivory Coast tektites: Confirmation of a meteoritic component and rhenium depletion  

NASA Technical Reports Server (NTRS)

The sensitive negative thermal ionization mass spectrometry method was used for the measurement of concentrations and isotopic ratios of osmium and rhenium in four Ivory Coast tektites. These tektites have crustal major and trace element composition, as well as large negative epsilon(sub Nd)(-20) and positive epsilon(sub Sr)(+260 to +300) which are characteristic for old continental crust. Os concentrations ranging from 0.09 to 0.30 ppb were found, clearly much higher than average crustal values, Os-187/Os-186 ratios of about 1.2-1.7, and low Re-187/Os-186 ratios. These results show unambiguously the existence of a meteoritic component (on the order of 0.06%) in the Ivory Coast tektites. Low Re abundances are the result of fractionation of Re during the impact.

Koeberl, Christian; Shirey, Steven B.

1993-01-01

3

Single crystal U-Pb zircon age and Sr-Nd isotopic composition of impactites from the Bosumtwi impact structure, Ghana: Comparison with country rocks and Ivory Coast tektites  

PubMed Central

The 1.07 Myr old Bosumtwi impact structure (Ghana), excavated in 2.1–2.2 Gyr old supracrustal rocks of the Birimian Supergroup, was drilled in 2004. Here, we present single crystal U–Pb zircon ages from a suevite and two meta-graywacke samples recovered from the central uplift (drill core LB-08A), which yield an upper Concordia intercept age of ca. 2145 ± 82 Ma, in very good agreement with previous geochronological data for the West African Craton rocks in Ghana. Whole rock Rb–Sr and Sm–Nd isotope data of six suevites (five from inside the crater and one from outside the northern crater rim), three meta-graywacke, and two phyllite samples from core LB-08A are also presented, providing further insights into the timing of the metamorphism and a possibly related isotopic redistribution of the Bosumtwi crater rocks. Our Rb–Sr and Sm–Nd data show also that the suevites are mixtures of meta-greywacke and phyllite (and possibly a very low amount of granite). A comparison of our new isotopic data with literature data for the Ivory Coast tektites allows to better constrain the parent material of the Ivory Coast tektites (i.e., distal impactites), which is thought to consist of a mixture of metasedimentary rocks (and possibly granite), but with a higher proportion of phyllite (and shale) than the suevites (i.e., proximal impactites). When plotted in a Rb/Sr isochron diagram, the sample data points (n = 29, including literature data) scatter along a regression line, whose slope corresponds to an age of 1846 ± 160 Ma, with an initial Sr isotope ratio of 0.703 ± 0.002. However, due to the extensive alteration of some of the investigated samples and the lithological diversity of the source material, this age, which is in close agreement with a possible “metamorphic age” of ? 1.8–1.9 Ga tentatively derived from our U–Pb dating of zircons, is difficult to consider as a reliable metamorphic age. It may perhaps reflect a common ancient source whose Rb–Sr isotope systematics has not basically been reset on the whole rock scale during the Bosumtwi impact event, or even reflect another unknown geologic event.

Ferriere, Ludovic; Koeberl, Christian; Thoni, Martin; Liang, Chen

2010-01-01

4

ETV Program Production in the Ivory Coast.  

ERIC Educational Resources Information Center

The efficiency of educational broadcasting in the Ivory Coast is assessed from the standpoint of what and how physical and human resources are utilized. Information was obtained by reviewing the large volume of documents that have been published about the project and through interviewing personnel involved in its management and operation. The…

Evans, Stella; Klees, Steven

5

Infrasound from lightning measured in Ivory Coast  

NASA Astrophysics Data System (ADS)

It is well established that more than 2,000 thunderstorms occur continuously around the world and that about 45 lightning flashes are produced per second over the globe. More than two thirds (42) of the infrasound stations of the International Monitoring System (IMS) of the CTBTO (Comprehensive nuclear Test Ban Treaty Organisation) are now certified and routinely measure signals due to natural activity (e.g., airflow over mountains, aurora, microbaroms, surf, volcanoes, severe weather including lightning flashes, ...). Some of the IMS stations are located where worldwide lightning detection networks (e.g. WWLLN) have a weak detection capability but lightning activity is high (e.g. Africa, South America). These infrasound stations are well localised to study lightning flash activity and its disparity, which is a good proxy for global warming. Progress in infrasound array data processing over the past ten years makes such lightning studies possible. For example, Farges and Blanc (2010) show clearly that it is possible to measure lightning infrasound from thunderstorms within a range of distances from the infrasound station. Infrasound from lightning can be detected when the thunderstorm is within about 75 km from the station. The motion of the squall zone is very well measured inside this zone. Up to 25% of lightning flashes can be detected with this technique, giving better results locally than worldwide lightning detection networks. An IMS infrasound station has been installed in Ivory Coast for 8 years. The optical space-based instrument OTD measured a rate of 10-20 flashes/km^2/year in that country and showed strong seasonal variations (Christian et al., 2003). Ivory Coast is therefore a good place to study infrasound data associated with lightning activity and its temporal variation. First statistical results will be presented in this paper based on 3 years of data (2005-2008).

Farges, T.; Matoza, R. S.

2011-12-01

6

Analysis of Selected Agricultural Parastatals in the Ivory Coast.  

National Technical Information Service (NTIS)

Because the Ivory Coast has relied heavily on parastatals (quasi-state corporations) in successfully expanding its agricultural sector, it provides an illuminating subject for this study of the economic efficiency of agricultural parastatals. After backgr...

E. R. Hermann

1981-01-01

7

ETV (Educational Television) Program Production in the Ivory Coast.  

National Technical Information Service (NTIS)

In 1971, the Ivory Coast implemented a nationwide educational system reform designed to improve the reach and quality of educational offerings. A primary component of this reform is the intensive utilization of educational television (ETV) in primary scho...

S. Evans S. Klees

1976-01-01

8

Onchocerciasis in expatriates on the Ivory Coast.  

PubMed

Six cases of onchocerciasis were diagnosed in expatriates working on a hydroelectric dam project in Taabo (Ivory Coast) between 1977 and 1978. Taabo is in the forest area of the Bandama River, where onchocerciasis is hyperendemic. The six patients had lived in the area from 20 months to four years. In the early 1970s four of them had worked at the Kossou Dam, a similar project 125 miles up the Bandama River. Diagnoses were confirmed by demonstrating microfilariae in biopsy specimens taken from the skin overlying the iliac crest. A seventh case was diagnosed clinically as tropical filarial pulmonary eosinophilia. The six patients with microfilariae in the skin were treated successfully with diethylcarbamazine (Notezine, Hetrazan) and suramin (Moranyl). The patient with pulmonary involvement responded dramatically to treatment with diethylcarbamazine. The overall effects of onchocerciasis are poorly understood, though it is now one of the major tropical diseases, affecting millions of people living in central and western Africa, Yemen, and Central America. Medical treatment is successful, but few preventive measures are available for the disease; larvicides are subject to resistance, and their effects are transient. PMID:6261401

Mahoney, J L

1981-03-01

9

Infrasound from lightning measured in Ivory Coast  

NASA Astrophysics Data System (ADS)

It is well established that more than 2,000 thunderstorms occur continuously around the world and that about 45 lightning flashes are produced per second over the globe. More than two thirds (42) of the infrasound stations of the International Monitoring System (IMS) of the CTBTO (Comprehensive nuclear Test Ban Treaty Organisation) are now certified and routinely measure signals due to natural activity (e.g., airflow over mountains, aurora, microbaroms, surf, volcanoes, severe weather including lightning flashes, …). Some of the IMS stations are located where worldwide lightning detection networks (e.g. WWLLN) have a weak detection capability but lightning activity is high (e.g. Africa, South America). These infrasound stations are well localised to study lightning flash activity and its disparity, which is a good proxy for global warming. Progress in infrasound array data processing over the past ten years makes such lightning studies possible. For example, Farges and Blanc (2010) show clearly that it is possible to measure lightning infrasound from thunderstorms within a range of distances from the infrasound station. Infrasound from lightning can be detected when the thunderstorm is within about 75 km from the station. The motion of the squall zone is very well measured inside this zone. Up to 25% of lightning flashes can be detected with this technique, giving better results locally than worldwide lightning detection networks. An IMS infrasound station has been installed in Ivory Coast for 9 years. The lightning rate of this region is 10-20 flashes/km2/year from space-based instrument OTD (Christian et al., 2003). Ivory Coast is therefore a good place to study infrasound data associated with lightning activity and its temporal variation. First statistical results will be presented in this paper based on 4 years of data (2005-2009). For short lightning distances (less than 20 km), up to 60 % of lightning detected by WWLLN has been one-to-one correlated. Moreover, numerous infrasound events which have the infrasound from lightning signature could not be correlated when thunderstorms were close to the station. Statistical analyses of all correlated infrasound events show an exponential decrease of the infrasound amplitude with the distance of one order of magnitude per 50 km. These analyses show also that the relative position of lightning is important: the detection limit is higher when lightning occur at the East of the station than when they occur at the West. The dominant wind (the Easterlies) could be responsible of this dissymmetry. It also exists a high variability of detection efficiency with the seasons (better efficiency in fall than in spring). Finally, these statistics show clearly a structure inside the shadow zone (from 70 to 200 km away from the station). These results will be compared with intensive numerical simulations. The simulations are separated into two parts: the simulation of the near-field blast wave generated by a lightning and the simulation of the non-linear propagation of the shock front through a realistic atmosphere. By comparing our numerical results to recorded data over a full 1-year period, we aim to show that dominant features of statistics at the IMS station may be explained by the meteorological variability.

Farges, T.; Millet, C.; Matoza, R. S.

2012-04-01

10

What it is like to live in the Ivory Coast  

SciTech Connect

Exploration and production activity is increasing in the Ivory Coast on the strength of a small discovery by Exxon in 1977 and unofficial reports that Phillips has found a field in deep water which approaches Prudhoe Bay in size. Phillips is bringing five offshore rigs into Ivoirian waters.

Liddell, W.W.

1981-09-01

11

Innovative production system goes in off Ivory Coast  

Microsoft Academic Search

The phased field development of the Lion and Panthere fields, offshore the Ivory Coast, includes a small floating production, storage, and offloading (FPSO) tanker with minimal processing capability as an early oil production system (EPS). For the long-term production scheme, the FPSO will be replaced by a converted jack up mobile offshore production system (MOPS) with full process equipment. The

M. Childers; J. Barnes

1995-01-01

12

Energy assessment of Ivory Coast, Morocco, Nigeria, and Senegal  

Microsoft Academic Search

This report is an overview of the energy market in four West African countries: The Ivory Coast, Morocco, Nigeria, and Senegal. We feel these countries are representative of the West African region. Together they account for 75% of the total energy use in West Africa, 78% of GDP, and 76% of population. The purpose of the study is to analyze

A. Ghirardi; J. Sathaye; P. Goering

1986-01-01

13

[Osteoarticular tuberculosis in the Ivory Coast. Apropos of 24 cases].  

PubMed

24 cases of osteoarticular tuberculosis have been observed in two years in the Regional Hospital of Bouaké (Ivory-Coast). Multifocus and pluri-visceral localizations are frequent. Diagnosis is based on a network of evidence and on the research of an evolutive bacillary focus out of bones. The medical treatment used alone because of local conditions of practice, appears to be effective, even in advanced and complicated cases. But mid-term follow-up is still not very satisfactory. PMID:3010029

Bauduceau, B; Herody, M; Chapuis, P; Bauduceau, A; Thevenot, J

1986-01-01

14

The Influence of Predisposing, Enabling and Need Factors on Condom Use in Ivory Coast  

ERIC Educational Resources Information Center

The main objective of this study was to identify key determinants of condom use in Ivory Coast. Data stem from Ivory Coast Demographic Health Survey (DHS) conducted by ORC Macro in 2005 among a representative sample of 9,686 persons aged 15 - 49. Following the behavioral model, we use logistic regression to assess the effect of predisposing,…

Ngamini Ngui, Andre

2010-01-01

15

Energy assessment of Ivory Coast, Morocco, Nigeria, and Senegal  

SciTech Connect

This report is an overview of the energy market in four West African countries: The Ivory Coast, Morocco, Nigeria, and Senegal. We feel these countries are representative of the West African region. Together they account for 75% of the total energy use in West Africa, 78% of GDP, and 76% of population. The purpose of the study is to analyze the evolution of energy demand in the context of the general socio-economic background of the region. The study also examines energy supply and trade related to the energy sector. The analysis focuses on the study of commercial fuels. Although we have reviewed studies of wood, solar, wind, and agricultural residues, we leave out detailed discussions of these non-commercial energy forms. The first part of the report is an assessment of the trends in energy demand in the four study countries. We discuss the main factors driving energy demand sector by sector. This is followed by a review of the primary energy resources of the countries, and of the capacity for production of secondary fuels. The last section looks at energy trade, with particular emphasis on the role of the United States.

Ghirardi, A.; Sathaye, J.; Goering, P.

1986-11-01

16

Biologically induced accumulations of CaCO 3 in orthox soils of Biga, Ivory Coast  

Microsoft Academic Search

Biologically induced accumulations of calcium carbonate have been found inside orthox soils, under and around the native iroko tree Milicia excelsa (Moraceae) in Biga (Ivory Coast). The nature of these accumulations and their origin were studied in two soil profiles, directly under the tree and at a distance of 30 cm from the trunk. Microscale forms of CaCO3 include: (1)

Guillaume Cailleau; Olivier Braissant; Christophe Dupraz; Michel Aragno; Eric P. Verrecchia

2005-01-01

17

[Detection and treatment of early forms of Mycobacterium ulcerans infection in Ivory Coast].  

PubMed

Mycobacterium ulcerans infection (Mu) is an emerging public health problem. The cumulative number of cases in Ivory Coast was 10,382 in 1997. One of the key points of the Yamoussoukro "global initiative" in December 1997 involved detection and treatment of cases at the early-disease stage. The threefold purpose of this transversal study was to determine the frequency of nodular-stage Mu infection, to describe the features of the nodules, and to identify nodular features suitable for early screening use. Of the 93 nodules removed, 58.1% were due to Mu, indicating that the prevalence of nodular-stage Mu in Zoukougbeu, Ivory Coast was 9 per 1000 inhabitants. All Mu nodules were recent, caused pruritus, and displayed oedematous edges. The mean duration of disease was 23 months. In endemic areas, Mu infection should be suspected for any lesion that is of recent onset (< 5 year), shows visible elevation, has a diameter of 3 cm or more, or is mobile under the skin. Cold nodules that are adherent to the superficial skin layer and located on the limbs or firm cold nodules should also be considered as suspect. Excision of cold nodules caused by Mu is recommended. The wound heals within 4 weeks and no recurrences have been reported after 6-month follow-up. PMID:16548484

Ecra, E; Kanga, J M; Gbery, I D; Sangare, A; Kacou, E; Kouame, K; Kaloga, M; Kamelan, C O P; Yao, J

2005-09-01

18

Toepassing van SPOT in Het Tai Gebied (Ivoorkust) (Application of SPOT in the Tai Area (Ivory Coast)).  

National Technical Information Service (NTIS)

SPOT remote sensing data were used for soil and vegetation mapping of the national park Tai on the Ivory Coast. Each remote sensing product has its own value, but also limitations, especially with respect to the processing of data concerning tropical fore...

M. A. Mulders M. Pijpers

1991-01-01

19

Mineralogical, crystallographic and morphological characteristics of natural kaolins from the Ivory Coast (West Africa)  

NASA Astrophysics Data System (ADS)

Thirteen clay samples from four deposits in the Ivory Coast (West Africa) were studied using X-ray diffraction, thermogravimetric analysis and chemical analysis. Mineralogical, crystallographic and morphological characteristics of these samples are given. Kaolinite is the principal mineral but other minerals are present in small quantities: illite, quartz, anatase and iron oxides (oxides and oxyhydroxides). The crystallographic, morphological and surface characteristics are influenced by the presence of these impurities. In particular, the presence of iron oxides was associated with reduced structural ordering and thermal stability of kaolinite and increased specific surface area. These clays could be used in the ceramics industry to make tiles and bricks, and also in agronomy as supports for chemical fertilizers or for environmental protection by immobilising potentially toxic waste products.

Sei, J.; Morato, F.; Kra, G.; Staunton, S.; Quiquampoix, H.; Jumas, J. C.; Olivier-Fourcade, J.

2006-10-01

20

Sonomorphologic evaluation of goiter in an iodine deficiency area in the Ivory Coast.  

PubMed Central

OBJECTIVES: This study evaluated the extent of thyroid abnormalities in a remote iodine-deficient area of the Ivory Coast. METHODS: Ultrasonography was used in detecting the presence of goiter. RESULTS: The overall prevalence rates of goiter were 64.7% among females and 53.3% among males. In children aged 6 to 15 years (n = 314), the prevalence of goiter was 62% regardless of sex. Thyroid volume increased steadily with age, with significantly larger goiters in women 25 years and older. Frequency of cysts and calcifications did not correlate with sex. CONCLUSIONS: Especially in developing countries, prophylaxis of iodine deficiency disorders must be improved in iodine-deficient areas to prevent substantial morbidity, which is more severe in women and elderly persons.

Franke, D; Filler, G; Zivicnjak, M; Kouame, P; Ohde, I; Eckhardt, L; Doehring, E; Ehrich, J H

1999-01-01

21

Phenetic and genetic structure of tsetse fly populations (Glossina palpalis palpalis) in southern Ivory Coast  

PubMed Central

Background Sleeping sickness, transmitted by G. p. palpalis, is known to be present in the Ivory Coast. G. p. palpalis has recently been reported to occur in several places within the town of Abidjan, including: (i) the Banco forest, (ii) the Abobo Adjamé University campus and (iii) the zoological park. Could these three places be treated sequentially, as separate tsetse populations, or should they be taken as one area comprising a single, panmictic population? Methods The amount of gene flow between these places provides strategic information for vector control. It was estimated by the use of both microsatellite DNA and morphometric markers. The idea was to assess the interest of the faster and much less expensive morphometric approach in providing relevant information about population structure. Thus, to detect possible lack of insect exchange between these neighbouring areas of Abidjan, we used both genetic (microsatellite DNA) and phenetic (geometric morphometrics) markers on the same specimens. Using these same markers, we also compared these samples with specimens from a more distant area of south Ivory Coast, the region of Aniassué (186 km north from Abidjan). Results Neither genetic nor phenetic markers detected significant differentiation between the three Abidjan G. p. palpalis samples. Thus, the null hypothesis of a single panmictic population within the city of Abidjan could not be rejected, suggesting the control strategy should not consider them separately. The markers were also in agreement when comparing G. p. palpalis from Abidjan with those of Aniassué, showing significant divergence between the two sites. Conclusions Both markers suggested that a successful control of tsetse in Abidjan would require the three Abidjan sites to be considered together, either by deploying control measures simultaneously in all three sites, or by a continuous progression of interventions following for instance the "rolling carpet" principle. To compare the geometry of wing venation of tsetse flies is a cheap and fast technique. Agreement with the microsatellite approach highlights its potential for rapid assessment of population structure.

2012-01-01

22

Geostatistical estimation of the transmissivity in a highly fractured metamorphic and crystalline aquifer (Man-Danane Region, Western Ivory Coast)  

Microsoft Academic Search

This work is aimed at estimating the transmissivity of highly fractured hard rock aquifers using a geostatistical approach. The studied aquifer is formed by the crystalline and metamorphic rocks of the Western Ivory Coast (West Africa), in the Man Danané area. The study area covers 7290km2 (90km×81km). The fracturing network is dense and well connected, without a marked fracture direction.

Moumtaz Razack; Théophile Lasm

2006-01-01

23

Studies on the major histocompatibility complex of indigenous cattle in the Ivory Coast.  

PubMed

The MHC (BoLA) type has been determined for cattle from three breeds in West Africa. Seventy Baoule, 50 N'Dama and 30 Zebu cattle from the centre and north of the Ivory Coast were tested. Lymphocytes from these cattle were tested in a lymphocytotoxicity test with alloantisera detecting all of the internationally recognised BoLA sera. 78 sera prepared in Edinburgh and 57 in Jouy-en-Josas were used in the study. The results showed that sera prepared in Europe detect similar specificities in West Africa. Although with some specificities the frequencies differ from those seen in Europe. The frequency of null alleles is higher than in Europe in the Ndama and Zebu animals indicating the existence of additional specificities which will require the production of alloantisera in these breeds. However in the Baoule the null allele frequency is lower even then in some European breeds. The population data in which no animals have more than two workshop specificities is consistent with a single locus control in West Africa as in Europe. PMID:2820115

Spooner, R L; Leveziel, H; Hoste, C; Queval, R

1987-07-01

24

Plasmodium falciparum sensitivity to chloroquine in the Buyo Region, Ivory Coast*  

PubMed Central

As part of a project, supported by the UNDP/World Bank/WHO Special Programme for Research and Training in Tropical Diseases, for achieving a reduction of mortality due to Plasmodium falciparum by means of a primary health care programme, in vivo and in vitro sensitivity testing of P. falciparum to chloroquine was carried out in the Buyo Region of the Ivory Coast. Blood samples from a total of 595 children aged 2-13 years from 5 villages were screened microscopically and 32 of these children were selected for in vivo testing and 36 for in vitro testing. All 32 in vivo test patients were treated with 25 mg chloroquine base per kg, given in divided doses over 3 days, and all of them completed the 7-day observation period. Daily blood slides were taken and these were negative for asexual parasites on days 3 to 7. The mean parasite clearance time was 1.8 days. The 36 in vitro tests produced satisfactory results in 19 isolates. Complete inhibition was achieved in all 19 at 5.7 pmol chloroquine base per well (1.14 ?mol/l of blood); 7 of these isolates showed complete inhibition at 1 pmol, 15 at 2 pmol and 17 at 4 pmol. These results showed that in the population studied there was no evidence of chloroquine resistance in either the in vivo or in vitro tests and they give confirmation of a continued response in West Africa to the standard curative regimen of chloroquine.

Douchet, C. J. J.; G'Bary, R.; Houon, J.; Payne, D.

1984-01-01

25

Taxonomic diversity and structure of benthic macroinvertebrates in Aby Lagoon (Ivory Coast, West Africa).  

PubMed

The benthic macroinvertebrates of Aby lagoon (West Africa: Ivory coast) was studied during four seasons (high dry season, high rainy season, low dry season and low rainy season, respectively) from June 2006 to March 2007. The distribution of the benthic macroinvertebrates species was recorded at 13 stations on the whole of the lagoon. A total of 62 taxa of benthic macroinvertebrates belonging to 28 families and 10 orders were listed. The molluscs and crustaceans dominate qualitatively by adding up 51 and 24%, respectively of the total number of organisms. Five taxa (Corbula trigona (20%), Pachymelania aurita (12%), Clibernhardius cooki (7%), Oligochaeta (7%) and Crassostrea gasar (6%) accounted for 52% of total abundance. Classification analysis used to perform the characterisation of the lagoon on the basis of benthic macroinvertebrates showed the existence of four main clusters in which the seasonal pattern in benthic macroinvertebrates were very similar in the four seasons. In contrast the species richness and diversity indices were significantly different. Furthermore these indices where higher in the stations closer to the sea and surrounded by mangrove trees (southern area) compared to the inland ones. PMID:19137831

Kouadio, K N; Diomandé, D; Ouattara, A; Koné, Y J M; Gourène, G

2008-09-15

26

Health cooperation in an hospital of a rural area of Ivory Coast: analysis of the priorities and of the different levels at which cooperation can take place  

Microsoft Academic Search

This paper critically reviews an experience of health cooperation in an hospital of a rural area of Ivory Coast. This particular situation is analysed in the more general frame of health problems in low-income countries and may suggest priorities for international health cooperation. The analysis of the main causes of avoidable death in poor countries does indicate targets and tools

Ercole Brusamolino; Guido Maffi

2004-01-01

27

Cuban tektite revisited  

SciTech Connect

Major-element and trace-element analyses were performed on the Cuban tectite, found about 20 years ago at Columbia University and classified by Garlick et al. (1971) as belonging to the North American tectite strewn field. The results indicate that the Cuban tektite is a North American tektite, but different from both bediasites and Georgia tektites, although with some similarities to bediasites. This tektite also has some similarities to the Barbados tektites, and, thus, may comprise its own distinct subgroup, probably related to the Barbados occurrence and belonging to a Caribbean substrewn field. It is concluded that the Cuban tektite really originated from Cuba. 32 references.

Koeberl, C.

1988-06-01

28

A Cuban tektite  

USGS Publications Warehouse

A large tektite from Cuba is classified with other North American tektites on the basis of its age. The major-element chemistry, oxygen isotopic composition, refractive index and density of the Cuban tektite are within the ranges exhibited by bediasites. ?? 1971.

Garlick, G. D.; Naeser, C. W.; O'Neil, J. R.

1971-01-01

29

Risk factors associated with brucellosis seropositivity among cattle in the central savannah-forest area of Ivory Coast.  

PubMed

Serological results obtained from 907 serum samples collected from unvaccinated cattle of at least 6 months of age in the savannah-forest region of Ivory Coast were used to investigate risk factors associated with bovine brucellosis seropositivity. Serum samples were tested using the Rose Bengal test (RBT) and indirect enzyme linked immunosorbent assay (iELISA). Using a parallel interpretation, RBT and iELISA results showed that 10.3% (95% confidence interval (CI): 8.4, 12.4) of the cattle had antibodies against Brucella in our study area. The logistic regression analysis indicated that brucellosis seropositivity was associated with age and herd size. Cattle above 5 years of age were found to have a higher chance of being seropositive (odd ratio (OR)=2.8; 95% CI: 1.3, 6.4) compared to cattle under 3 years of age. Similarly, the odd of brucellosis seropositivity for herds with more than 100 cattle was 3.3 (95% CI: 1.2, 8.9) times higher compared to those with less than 50 cattle. PMID:22704904

Sanogo, Moussa; Abatih, Emmanuel; Thys, Eric; Fretin, David; Berkvens, Dirk; Saegerman, Claude

2012-11-01

30

[Specific diversity and culicidian nuisance in the villages of N'gatty and Allaba in laguna area of Ivory Coast].  

PubMed

Entomological surveys were undertaken between June and December 2006 in N'gatty and Allaba. These villages are located in southern Ivory Coast in a laguna area in Dabou department. In these villages, there are large swampy areas, which have caused the multiplication of anthropophilic Culicidae. Mosquitoes have been collected at preimaginal stage at the time of the larval prospecting and at adult stage through human landing catch. Larval collections have been made using the classic method of "dipping". Larvae have been identified to the genus level. Then, they have been bred in the laboratory to identify adults. Adults collection has been made once a month during three consecutive nights by human landing catch inside houses. Adults have been identified to the specific level. Eight genera of mosquitoes have been collected in these two villages: Aedes, Anopheles, Coquillettidia, Culex, Eretmapodites, Mansonia, Toxorhynchites and Uranotaenia. Twenty-four species have been listed during this stu y. The genus Mansonia is the most predominant with 86% (N = 15,811) and 80% (N = 1,385), respectively, in N'gatty and Allaba. The average biting rate per day varies between N'gatty and Allaba. It is estimated to 308 bites per human per night (b/h/n) in N'gatty and 72 b/h/n in Allaba. In these villages, mosquito nuisance is mainly due to Mansonia with 264 b/h/n and 58 b/h/n, respectively, in N'gatty and Allaba. However, Anopheles gambiae s.l. average rate was 12 b/h/n in N'gatty and 2 b/h/n in Allaba. PMID:20632142

Fofana, D; Konan, K L; Djohan, V; Konan, Y L; Koné, A B; Doannio, J M C; N'goran, K E

2010-12-01

31

Tektites and Geomagnetic Reversals  

Microsoft Academic Search

THE microscopic glassy objects which occur in sediments deposited in the Australasian area during and shortly after the last magnetic polarity reversal are apparently tektites (see succeeding communication). The last reversal occurred 0.7 × 106 yr ago: potassium-argon dates1 indicate that the Australasian tektites were formed 0.7 × 106 yr ago. The tektites were formed and deposited at the same

Bill Glass; Bruce C. Heezen

1967-01-01

32

The impact of human immunodeficiency virus infection on pelvic inflammatory disease: a case-control study in Abidjan, Ivory Coast.  

PubMed

During October 1992 to July 1993 in Abidjan, Ivory Coast, health workers conducted interviews, physical examinations, pelvic ultrasonography, and laboratory testing with 170 women with pelvic inflammatory disease (PID) at the University Hospital of Treichville and four primary care clinics. They compared clinical and microbiological characteristics and the response to PID therapy in 57 HIV seropositive women (cases) and in 113 HIV seronegative women (controls). Cases were more likely than controls to have a temperature of at least 38 degrees Celsius (odds ratio [OR] = 2.5), a genital ulcer (OR = 7.8), and a tuboovarian mass on ultrasonography (OR = 2.6) and to need surgery (OR = 6.5) and hospitalization (OR = 3.5). They also had a higher clinical severity score than did the controls (17.4 vs. 15.4; p = 0.01). Cases with a lower CD4 count (14%) were significantly more likely than cases with a higher CD4 count to have a temperature of at least 38 degrees Celsius (56% vs. 13-19%; p = 0.03) and dysuria (78% vs. 33-41%; p = 0.05). They also tended to have a genital ulcer and a tuboovarian mass, but not significantly so. Among all 170 women, the most common pathogenic organisms responsible for PID were Neisseria gonorrhoeae (29.4%) and Chlamydia trachomatis (9.4%). Neither infection was significantly related to HIV infection. Yet, the cause of PID in cases with the highest CD4 count was less likely to be N. gonorrhea than that of cases with lower CD4 counts (13% vs. 44%; p = 0.07). Among the 162 women who received oral antibiotics, 95% of the 40 cases and 93% of the controls responded to antibiotic therapy within four days. On days 4 and 14, none of these women still had a fever. These findings suggest that HIV infection affected clinical manifestations of PID but did not affect the cause of PID or response to therapy. PMID:7892886

Kamenga, M C; De Cock, K M; St Louis, M E; Touré, C K; Zakaria, S; N'gbichi, J M; Ghys, P D; Holmes, K K; Eschenbach, D A; Gayle, H D

1995-03-01

33

The tektite problem  

NASA Technical Reports Server (NTRS)

Small glassy pebbles, called tektites, are found in widely scattered locations around the world. These tektites appear much like volcanic glass obsidian, but their chemical composition is different from that of any terrestrial lava and they contain far less water and none of obsidian's characteristic microcrystals. No one has ever found the mother lode of a field of tektites. They cannot, therefore, be the product of terrestrial volcanism. Recently acquired knowledge about the moon's surface confirms earlier indications that tektites cannot be bits of lunar soil propelled to the earth by the impact of meteorites on the moon. According to one of two remaining possibilities tektites are bits of terrestrial sedimentary rock excavated by meteorites striking the earth's surface, melted by the heat of impact, and congealed into glass as they travel above the atmosphere to the scattered sites where they are found. The other possibility is that tektites are the remains of gobs of lava fired at the earth by volcanic activity on the moon.

Okeefe, J. A.

1978-01-01

34

Ivory Snowmen  

ERIC Educational Resources Information Center

Recalling memories from her own third grade art classes, Ann Mueller, recreated an updated version for her students showing her students how to make snow scenes from Ivory Snow flakes. She showed students the video, The Snowman based on Raymond Briggs's book of the same name. Its beautiful images spur the imagination, and the musical score is…

Mueller, Ann

2005-01-01

35

Sensitivity and specificity of human immunodeficiency virus rapid serologic assays and testing algorithms in an antenatal clinic in Abidjan, Ivory Coast.  

PubMed

To evaluate serologic testing algorithms for human immunodeficiency virus (HIV) based on a combination of rapid assays among persons with HIV-1 (non-B subtypes) infection, HIV-2 infection, and HIV-1-HIV-2 dual infections in Abidjan, Ivory Coast, a total of 1,216 sera with known HIV serologic status were used to evaluate the sensitivity and specificity of four rapid assays: Determine HIV-1/2, Capillus HIV-1/HIV-2, HIV-SPOT, and Genie II HIV-1/HIV-2. Two serum panels obtained from patients recently infected with HIV-1 subtypes B and non-B were also included. Based on sensitivity and specificity, three of the four rapid assays were evaluated prospectively in parallel (serum samples tested by two simultaneous rapid assays) and serial (serum samples tested by two consecutive rapid assays) testing algorithms. All assays were 100% sensitive, and specificities ranged from 99.4 to 100%. In the prospective evaluation, both the parallel and serial algorithms were 100% sensitive and specific. Our results suggest that rapid assays have high sensitivity and specificity and, when used in parallel or serial testing algorithms, yield results similar to those of enzyme-linked immunosorbent assay-based testing strategies. HIV serodiagnosis based on rapid assays may be a valuable alternative in implementing HIV prevention and surveillance programs in areas where sophisticated laboratories are difficult to establish. PMID:11325995

Koblavi-Dème, S; Maurice, C; Yavo, D; Sibailly, T S; N'guessan, K; Kamelan-Tano, Y; Wiktor, S Z; Roels, T H; Chorba, T; Nkengasong, J N

2001-05-01

36

The Origin of Tektites  

NASA Technical Reports Server (NTRS)

Tektites are probably extraterrestrial, rather than the result of heating some terrestrial materials, because they are a chemically homogeneous group with definite peculiarities (high silica, excess of alkaline earths over alkalis, excess of potash over soda, absence of water), and because some of them (the australites) appear to have undergone ablation in flight through the atmosphere. Since comparatively slow heating is required to explain the liquefaction of the tektite material, it is suggested that the tektites arrived along orbits which were nearly parallel to the surface of the earth, and which resulted from the decay of the orbit of a natural satellite. The great meteor procession of February 9, 1913, is an example of such an object. Comparison with the reentry phenomena of the artificial satellite 1957 Beta suggests that the 1913 shower consisted of a single large stone weighing about 400 kilograms, and a few dozen smaller bodies weighing about 40 grams each, formed by ablation from the larger body. It is shown that under the observed conditions considerable liquid flow would be expected in the stone, which would be heated to about 2100 K. Objects falling from such a shower near the perigee point of the orbit would have a considerable distribution along the orbit as a result of slight variations in height or drag coefficient. The distribution in longitude would be made wider by the turning of the earth under the orbit during the time of fall. The ultimate source of the body which produces a tektite shower is probably the moon, which appears, by virtue of its polarization and the phase distribution of the returned light, to contain high-silica materials. It is suggested that the Igast object alleged to have fallen in 1855 is in fact genuine and represents an unmelted portion of the lunar crust.

OKeefe, J. A.

1960-01-01

37

Australasian tektites: source parameters and crater location reviewed  

NASA Astrophysics Data System (ADS)

Tektites of the Australasian strewn field cover an area from SE-Asia, through the Southwestern part of the Pacific Ocean and parts of the Indian Ocean, down to Australia. The impact crater has until now not been positively located, but it is generally assumed to be located somewhere in Indochina, where tektites also are more abundant and larger. 40Ar/39Ar dated Australasian tektites consistently give ages around 800 ka (1,2), and our new laser step-heating determinations on a Thailand tektite are in agreement. Australasian tektites show a marked coherence in physical, chemical and isotopic parameters. Refractive indices of tektite fragments, numbers of vesicles, abundance of relict minerals, tektite mass/m2, major elements compositions from tektites covering the whole strewn field can be contoured with more or less elliptical curves with slightly varying center positions, located within a few 100 km of the Cambodia, Laos, Vietnam junction. Isotope data suggest that sediments of the impact area consisted of ~1500 Ma old denudation material (Nd-isotope data (3,4)) and that this material was eroded within the last 170 Ma (Sr-isotope data (3,4)). Fine-grained minerals and particularly soils are effective scavengers of cosmogenic 10Be, and the high values reported for Australasian tektites (5) suggest that clay minerals are a significant and variable component in the target material. The highest 10Be-values are from tektites found furthest from the impact site. In the impact process, the top layer of the target - with its young sedimentation ages and higher 10Be values - will be projected the furthest away from the impact site. The next layer down consists of slightly older material with lower 10Be, and the impact process will propel these tektites to areas closer to the impact site. The 10Be distribution in tektites shows this variation and defines a broad center (~17°N, ~107°E) off the coast of Vietnam (5). La-ICPMS Pb/Pb-isotope data from tektites show small progressive variations from Australia over Java to Thailand, and when these data are compared to determined Pb/Pb-isotope data from sediments from the Pearl River (S. China) and the Mekong River (S.Vietnam)(6) the data project towards the Mekong River suggesting that the crater could be found nearer to the Mekong River delta. Schnetzler et al. (7) using early Seasat/Geos3 satellite data first reported the possibility of a large crater off the coast of Vietnam (~13.8°N, ~110.6 °E). We have examined satellite bathymetry and gravity data for a large section of off-shore Vietnam, and we located a near circular feature at essentially the same position. The structure has a diameter of approximately 100 km, with a center at (~13.6°N, ~111.2 °E), and a peak rises more than 500 m above the crater floor. We concur with Schnetzler et al. (7) that this structure is most likely the impact site for Australasian tektites. (1) Yamei et al., Science 287, p1622 (2000) (2) Lo et al., MAPS, 37, p1555 (2002)) (3) Blum et al., GCA 56, p483 (1992) (4) Shaw and Wasserburg, EPSL 60, p155 (1982) (5) Ma et al., GCA 68, p3883 (2004) (6) Millot et al., Chem Geol, 203, p75 (2004) (7) Schnetzler et al., GRL 15, p357 (1988)

Stecher, O.; Storey, M.; Hopper, J. R.

2009-12-01

38

Tektites and climate  

NASA Astrophysics Data System (ADS)

Only four tektite fields have been produced during the past 40 m.y., even though at least 60 impact craters have been produced during the same period in continental lithologies having tektite-like compositions. The apparent reason for this discrepancy is that the ejecta from most crater-forming impacts was not completely melted. The key factor affecting melt production seems to be the nature of the target, particularly its porosity. The fraction of projectile kinetic energy converted to heat may be an order of magnitude higher in a highly porous target than in a void-free target. The grain size and water content of the target are also important. The ideal target is a porous, fine-grained sediment such as loess, particularly if it is also dry. It is suggested that the rate of impact production of fully molten crater ejecta is proportional to the fraction of the continental surface having thick (greater than 10 m) blankets of dry loess and that tektites are mainly produced during cold, dry periods when such deposits are an order of magnitude more common than at present.

Wasson, J. T.; Heins, W. A.

1993-02-01

39

Tektite 2 habitability research program  

NASA Technical Reports Server (NTRS)

Multi-level parameters relating to perceived life quality in an isolated research and residence quarters were measured using a variety of tests. The habitat under study, emplaced beneath the sea off the coast of St. John's Island as a part of the Tektite II program, was being used for marine research. The crew for each of the 10 missions consisted of one engineer and 4 scientists. One mission had an all-female crew. Mission length was either 14 or 20 days, and 4 engineers, in covering 6 missions, stayed in the habitat for periods of 30 days each. A personality test was taken before confinement in the habitat. Two attitude tests were filled out by the aquanauts while they were still in the habitat. Daily moods were monitored during all missions. Special observations were made of leisure time use. Standardized private debriefings were administered at the end of each mission to each aquanaut. Other behavioral observations made by another research team were intercorrelated with the other measures described above.

Nowlis, D. P.; Wortz, E. C.; Watters, H.

1972-01-01

40

Tektite Ablation: Some Confirming Calculations  

Microsoft Academic Search

The calculation of tektite ablation has been redone, taking into account transient effects, internal radiation, melting and nonequilibrium vaporization of the glass, and the drag effect of the flanges. It is found that. the results confirm the earlier calculations of Chapman and his group and of Adams and his co-workers. The. general trend of the results is not sensitive to

John A. O'Keefe; Ernst W. Adams; John D. Warmbrod; Allan D. Silver; Winifred S. Cameron

1973-01-01

41

Age of the Australasian Tektite Strewn Field  

Microsoft Academic Search

As Fig. 1 shows, the widespread belief that the age of the Australasian tektite strewn field (AATSF) is ~0.7 m.y. appeared to be conventional. Tektites of different fission-track ages were found within the AATSF: 0.83 m.y. [1], 3.54-4.25 m.y. [2], and ~11 m.y. [3]. The first systematic investigation of the tektites, which were collected from a single stratigraphic layer in

E. P. Izokh

1993-01-01

42

Single crystal U–Pb zircon age and Sr–Nd isotopic composition of impactites from the Bosumtwi impact structure, Ghana: Comparison with country rocks and Ivory Coast tektites  

Microsoft Academic Search

The 1.07Myr old Bosumtwi impact structure (Ghana), excavated in 2.1–2.2Gyr old supracrustal rocks of the Birimian Supergroup, was drilled in 2004. Here, we present single crystal U–Pb zircon ages from a suevite and two meta-graywacke samples recovered from the central uplift (drill core LB-08A), which yield an upper Concordia intercept age of ca. 2145±82Ma, in very good agreement with previous

Ludovic Ferrière; Christian Koeberl; Martin Thöni; Chen Liang

2010-01-01

43

The New Central American Tektite Strewn Field  

NASA Astrophysics Data System (ADS)

Recently there have been more than 40 tektites found in western Belize. This apparently represents part of a new tektite strewn field. The Pantasma crater in Nicaragua is about 14 km diameter and is currently being investigated as the possible source crater.

Povenmire, H.; Harris, R. S.; Cornec, J. H.

2011-03-01

44

Fe-57 Moessbauer study of tektites  

NASA Technical Reports Server (NTRS)

Moessbauer measurements were made on selected moldavite, australite, philippinite, and Georgia tektites. The spectra consist of two apparent lines, but at least two quadrupole doublets can be fitted to these spectra. The Moessbauer parameters for these doublets indicate that they arise from Fe2+ ions with local environments, which are relatively rich and relatively poor in calcium, respectively, similar to those in clinopyroxenes. No evidence for Fe3+/Fe2+ ratios above 0.01 (estimated detection limit) have been found in any tektite. Tektites are considerably more reduced than previously believed, and the extent of the reduction shows little or no variation among different types of tektites. These results limit the source materials of tektites to minerals in which the iron is uniformly highly reduced and in which the iron is contained clinopyroxene-like phases.

Evans, B. J.; Leung, L. K.

1976-01-01

45

Tektites and their origin. [properties and distribution  

NASA Technical Reports Server (NTRS)

A study was conducted of the literature pertaining to the origin and characteristics of tektites. Topics discussed include tektite distribution in geographical locations, shapes of tektites, internal structure of tektites, physical properties, mechanical properties, optical properties, chemical composition, and comparisons with compositions of impact materials. Various arguments are presented on the terrestrial origin of tektites. It was found that some lunar craters of considerable size must be the products of volcanism which occurred during the past few million years, and that the moon must have within it a reservoir of rock which is considerably more like the mantle of the earth than like the rocks from which the basalts of the lunar crust are derived.

Okeefe, J. A.

1975-01-01

46

Noble Gas Compositions in Muong Nong-type Tektites  

Microsoft Academic Search

Tektites are natural silica-rich glasses and are thought to be produced during meteorite collisions with the Earth, similar to impact glasses. They occur in four geographically restricted areas and can be divided in three subgroups: normal or splash-form tektites, aerodynamically shaped tektites, and Muong Nong-type tektites [1]. Splash-form and aerodynamically shaped tektites are several grams in weight and are generally

K. Matsubara; J. Matsuda; C. Koeberl

1993-01-01

47

An Ordinary Chondrite Impactor Composition for the Bosumtwi Impact Structure, Ghana, West Africa: Discussion of Siderophile Element Contents and Os and Cr Isotope Data  

NASA Technical Reports Server (NTRS)

Osmium isotope data had shown that Ivory Coast tektites contain an extraterrestrial component, but do not allow distinction between chondritic and iron meteorite contamination. PGE abundances of Ivory Coast tektites and impactites and target rocks from the Bosumtwi crater, the source crater of the Ivory Coast tektites, were all relatively high and did not allow to resolve the presence, or identify the nature, of the meteoritic component. However, Cr isotope analyses of an Ivory Coast tektite yielded a distinct 53Cr excess of 0.30+/-0.06, which indicates that the Bosumtwi impactor was an ordinary chondrite.

Koeberl, Christian; Shukolyukov, Alex; Lugmair, Guenter

2004-01-01

48

The underworld of ivory  

Microsoft Academic Search

This paper examines the emergence and operation of the illegal market for ivory, paying particular attention to the institutional structure and criminogenic characteristics of the industry. It notes that many of the problems associated with modern regulation have deep historical roots. While much anti-animal trade rhetoric emphasizes the alleged participation of “organized crime” in the clandestine traffic, the reality is

R. T. Naylor

2005-01-01

49

Search for carbon 14 in tektites.  

NASA Technical Reports Server (NTRS)

An attempt was made to detect cosmic-ray produced C-14 in australites and far-east tektites. No C-14 activity was found outside of statistical fluctuations. If a terrestrial age of 10 thousand years is assumed for australites, a maximum cosmic-ray exposure time of one thousand years is obtained for these tektites on the basis of a 2-sigma statistical error.

Boeckl, R. S.

1972-01-01

50

Ivory and simulated ivory artefacts: Fourier transform Raman diagnostic study  

NASA Astrophysics Data System (ADS)

The Fourier transform Raman spectrum of ivory is reported and assignments are proposed for the major spectroscopic features. Application of the FT Raman technique to the non-destructive diagnostic identification of ivory and simulated ivory artefacts is illustrated with reference to several specimens, both modern and aged. Although the FT Raman spectrum of ivory is similar to that of other bone samples, the characteristic vibrational modes are identified and it is suggested that the relative intensity ratio of the ?(CH) stretching bands near 2930 cm -1 and the hydroxyapatite ?(PO) stretching band at 960 cm -1 is a good diagnostic parameter for ivory. Other modes, such as ?(NH) near 3300 cm -1, the ?(CH 2) profile near 1250 cm -1 and ?(CC) symmetric ring stretching intensity at 1002 cm -1 are also good confirming indicators to distinguish ivory from bone and synthetic specimens. Modern specimens of "ivory" using synthetic polymers and polymer-inorganic composites are easily distinguished spectroscopically from genuine ivory, particularly close textural specimens, which involved a synthetic blending of poly(methylmethacrylate), polystyrene and calcite.

Edwards, H. G. M.; Farwell, D. W.

1995-11-01

51

Noble Gas Compositions in Muong Nong-type Tektites  

NASA Astrophysics Data System (ADS)

Tektites are natural silica-rich glasses and are thought to be produced during meteorite collisions with the Earth, similar to impact glasses. They occur in four geographically restricted areas and can be divided in three subgroups: normal or splash-form tektites, aerodynamically shaped tektites, and Muong Nong-type tektites [1]. Splash-form and aerodynamically shaped tektites are several grams in weight and are generally homogeneous in chemistry. On the other hand, Muong Nong-type tektites are up to several kilograms in weight, are irregular in shape, and show layered structure. They are inhomogeneous in chemistry and are enriched in volatile elements such as halogens, boron, zinc, etc., compared to splash-form tektites [1]. Muong Nong-type tektites have larger vesicles than splash-form and aerodynamically shaped tektites. This shows that Muong Nong-type tektites are different from splash-form and aerodynamically shaped tektites in several aspects. We measured noble gas compositions in splash-form tektites [2] and impact glasses [3,4]. Although Ne concentrations in tektites and impact glasses were similar to each other, heavy noble gas (Ar, Kr, and Xe) concentrations in tektites were about 2 orders of magnitude lower than those in impact glasses. In this study, we studied noble gas compositions in some Muong Nong-type tektites in order to compare them with splash-form tektites. Muong Nong-type tektite samples used in this study originated from Ubon Ratchatani in East Thailand, near the border of Laos. Geochemical studies of the samples were made by Koeberl [5]. We measured noble gas concentrations and Ne and Ar isotopic compositions in four Muong Nong-type tektites using mass spectrometry. Noble gases were extracted by three methods: laser probe, crushing, and stepwise heating. Chipped samples of two Muong Nong-type tektites were used in laser probe analysis. We used 160-380 mg of samples for noble gas analysis by crushing and stepwise-heating methods. Noble gas concentrations in tektites, impact glasses, and Muong Nong-type tektites are shown in Fig. 1. Tektites shown are splash-form types collected from three strewn fields [2,6]. Impact glasses shown are Aouelloul, Zhamanshin, Libyan Desert glasses [4], and Darwin glass [3]. Heavy noble gas concentrations in Muong Nong-type tektites are higher than those in splash- form tektites and are similar to those in impact glasses. From the results of laser probe and crushing analysis of noble gases in Muong Nong-type tektites, it seems that vesicles are unevenly distributed in these samples and that large amounts of noble gases exist in theses vesicles. Neon isotopic compositions in vesicles in Muong Nong-type tektites agree well with a terrestrial atmosphere. 40Ar/36Ar ratios in vesicles are higher than that in air, suggesting that radiogenic 40Ar exists in vesicles and/or that radiogenic 40Ar in glass may degas by crushing. Fig. 1, which appears here in the hard copy, shows noble gas concentrations in splash-form tektites (open circles), impact glasses (open triangles), and Muong Nong-type tektites (filled cirles). References: [1] Koeberl C. (1988) Proc. NIPR Symp. Antarct. Meteorites, 1, 261-290. [2] Matsubara K. and Matsuda J. (1991) Meteoritics, 26, 217-220. [3] Matsuda J. et al. (1989) GCA, 53, 3025-3033. [4] Matsubara K. et al. (1991) GCA, 55, 2951-2955. [5] Koeberl C. (1992) GCA, 56, 1033-1064. [6] Hennecke E. W. et al. (1975) JGR, 80, 2931-2934.

Matsubara, K.; Matsuda, J.; Koeberl, C.

1993-07-01

52

Constraints on the formation of layered tektites from the excavation and analysis of layered tektites from northeast Thailand  

NASA Astrophysics Data System (ADS)

The size, shape, composition, and vesicle content of 6 kg of layered tektite fragments, excavated near the town of Huai Sai, Thailand, place some constraints on the formation of layered tektites. The mass, shape, and distribution of the fragments are not consistent with an origin as a "puddle" of impact melt but suggest that they were derived from a single equant block. The presence of vesicles up to 7 mm in mean diameter within the tektite fragments suggests that the material was too viscous to allow for significant gravity-driven flow. These results suggest that layered tektites may be analogous to lava bombs, which may have been stretched and deformed in flight but underwent little flow after landing. Rather than being a product of "unusual circumstances," such as multiple impacts, layered tektites may differ from splash-form tektites only in initial temperature of formation, speed of ejection, and small differences in initial composition.

Fiske, Peter S.

1996-01-01

53

Field evaluation of a combination of monospecific enzyme-linked immunosorbent assays for type-specific diagnosis of human immunodeficiency virus type 1 (HIV-1) and HIV-2 infections in HIV-seropositive persons in Abidjan, Ivory Coast.  

PubMed

Serologic distinction between human immunodeficiency virus type 1 (HIV-1) and HIV-2 infection is made difficult because of the cross-reactivity and high cost of existing differentiation assays. An evaluation of a strategy based on a combination of monospecific enzyme-linked immunosorbent assays (ELISAs) (CME), was carried out in Abidjan, Ivory Coast, where both HIV-1 and HIV-2 are present, to determine its accuracy and cost-effectiveness. A total of 1,608 (428 HIV-1-positive, 361 HIV-2-positive, 371 dually HIV-1 and HIV-2 [HIV-D] reactive, and 448 HIV-negative) sera that had been serotyped by a line immunoassay (Peptilav) were tested retrospectively by an HIV-1-monospecific (Wellcozyme HIV Recombinant ELISA) and an HIV-2-monospecific (ICE*-HIV-2) assay. The CME strategy gave concordant results for all of the 428 sera scored as HIV-1 by Peptilav. Of the 361 sera scored as HIV-2 by Peptilav, 316 (87.5%) were scored as HIV-2 by CME; the remaining 45 sera were positive by both monospecific ELISAs (mean optical density ratios, 1.36 for Wellcozyme and 11.30 for ICE*-HIV-2) and were classified as HIV-D by CME. Of the 371 sera classified as HIV-D by Peptilav, 344 (92.7%), 21, and 6 were scored as HIV-D, HIV-1, and HIV-2, respectively, by CME. Additional testing of the discrepant samples by two HIV differentiation assays (RIBA and INNO-LIA) gave results that agreed with those by CME for most of the sera. In addition, 267 other sera were tested prospectively by both CME and Peptilav. In the prospective evaluation, CME results agreed with those by Peptilav for all 106 HIV-1 sera and 40 of the 41 HIV-2 sera. However, of the 120 sera scored as HIV-D by Peptilav, 69 (57.5%), 47 (39.2%), and 4 (3.3%) were scored as HIV-D, HIV-1 only, and HIV-2 only, respectively, by CME. All 47 samples scored as HIV-1 by CME and two of four HIV-2 sera gave concordant results by RIBA, whereas 29 of 47 sera scored as HIV-1 by CME and all four HIV-2 sera gave concordant results by INNO-LIA. The reagent cost for the CME strategy was 59% lower than the cost of the Peptilav strategy. These results suggest that a combination of highly sensitive and specific commercially available monospecific ELISAs is a reliable and cost-effective strategy for type-specific serodiagnosis of HIV-1 and HIV-2 infections in HIV-seropositive persons and therefore represents a recommended strategy in areas where both HIV-1 and HIV-2 are endemic. PMID:9431934

Nkengasong, J N; Maurice, C; Koblavi, S; Kalou, M; Bile, C; Yavo, D; Boateng, E; Wiktor, S Z; Greenberg, A E

1998-01-01

54

Volatile fractionation and tektite source material  

NASA Technical Reports Server (NTRS)

The arguments used by Love and Woronow (1988) to assess the role played in the origin of bediasites by extensive volatile fractionation are critically examined. Using the ratios of 'refractory' oxides, CaO, Al2O3, and MgO, to the 'volatile' oxides, Na2O and K2O, these authors concluded that vapor fractionation did not play a significant role. In this paper, experimental evidence is presented that shows that the assumption of volatility for the alkali elements (as least with respect to silica) to be not valid under the conditions under which tektites formed. It is shown that the results of vapor fractionation in experiments on glasses of tektite composition are approximately parallel the trends seen in bediasite analysis.

Walter, Louis S.

1989-01-01

55

Lunar sample 14425 - Not a lunar tektite  

NASA Astrophysics Data System (ADS)

Energy-dispersive X-ray analysis of a polished section of lunar sample 14425 shows, in contradiction to a previous report, that it has a composition similar to Apollo 14 breccias, but not to high-magnesium microtektites. Lunar sample 14425 is a large (8.006±0.006 mm dia.) glass bead. Sample 14425 is one of the largest glass beads returned from the moon. Semiquantitative analysis of the bead indicated that it has a composition unlike other lunar samples, but similar to high-magnesium microtektites (O'Keefe and Glass, 1985). A polished section was prepared at the Lunar Receiving Laboratory, Johnson Space Center. Quantitative analysis of this section shows that the spherule is extremely homogenous in composition and that the composition is similar to Apollo 14 impact breccias and not to any known terrestrial tektite. It appears that the glass bead was formed by impact melting and that it is not a lunar tektite.

Glass, B. P.

1986-01-01

56

Volatile fractionation and tektite source material  

NASA Astrophysics Data System (ADS)

The arguments used by Love and Woronow (1988) to assess the role played in the origin of bediasites by extensive volatile fractionation are critically examined. Using the ratios of 'refractory' oxides, CaO, Al2O3, and MgO, to the 'volatile' oxides, Na2O and K2O, these authors concluded that vapor fractionation did not play a significant role. In this paper, experimental evidence is presented that shows that the assumption of volatility for the alkali elements (as least with respect to silica) to be not valid under the conditions under which tektites formed. It is shown that the results of vapor fractionation in experiments on glasses of tektite composition are approximately parallel the trends seen in bediasite analysis.

Walter, L. S.

1989-09-01

57

Origin of tektites: an alternative to terrestrial impact theory.  

PubMed

The Terrestrial Impact Theory (TIT) has won a complete victory over O'Keefe's lunar volcanic theory, but only because the Moon appears to be the wrong place for tektites. Indeed, the TIT ignores strong evidence of their volcanic origin--far from the Moon. The Extraterrestrial Volcanic Comet Theory proposes an alternative to both of these theories. Major arguments for an extraterrestrial tektite source are paradoxical: a great time difference between tektite formation and their arrival on Earth, and also forms, plastic deformations, ice collision marks, vacuum voids, etc. indicating specific conditions of tektite formation such as low gravitational field, lack of atmosphere, interaction of hot plastic tektites with ice, etc. Major evidence of volcanic origin includes: close analogy between shaped tektites and small volcanic bombs, and between layered tektites and lava or tuff-lava flows or huge bombs; analogy between flanged tektites and volcanic bombs ablated by gasjets: long-time, multistage formation of some tektites that corresponds to wide variations in their radiometric ages; well-ordered long compositional trends (series) typical of magmatic differentiation; different compositional tektite families (subseries) comparable to different stages (phases) of the volcanic process. Thus, different types of volcanic eruptions under extraterrestrial conditions could be reconstructed based on tektite properties. It is presumed that tektites were transported to the Earth by specific eruptive comets, i.e. in the form of ice-tektite agglomerates launched into space by volcanic explosion. Major arguments favouring comets include: ice collision marks and imprints as mentioned above; linear band-like sculpture of the Australasian strewn field as evidence of comet fragmentation and slope or skipping trajectory of separate fragments; compact coincidence of the Zhamanshin impact crater with small tektite strewn field as evidence of steep trajectory of separate comet fragments that disintegrated while entering the atmosphere. The comet-Earth collision under consideration happened 10,000 years ago and caused the global catastrophe marked by the sharp Pleistocene-Holocene boundary, i.e. by abrupt climatic changes, the end of glaciation, mass extinction, etc. This event can be compared with the "dinosaur" catastrophe at the K/T boundary 65 Ma, which was also accompanied by tektite fall. PMID:11541098

Izokh, E P

1996-01-01

58

Coasts  

NSDL National Science Digital Library

This site serves as a portal for information pertaining to the coasts of the U.S. The coast page offers an introduction to the nature and importance of our coasts followed by a section that spells out their mission. The site contains a host of active links to other pages which include quick access to coastal information, immediate graphical and tabular water level and meteorological data from NOAA water level stations located at various U.S. coastal locations, real-time water levels, currents, and other oceanographic and meteorological data from bays and harbors, links to U.S. coastal observing systems, NOAA Restoration Center, and NOAA photo galleries. The site also has links to current topics, products such as publications and data bases, and seventeen organizations that are either a part of NOAA or closely aligned.

59

DSC and Raman spectroscopy study of glass transition in tektites  

Microsoft Academic Search

Tektite glasses are products of meteor or asteroid impacts on the Earth, during which the solid rock was melted, evaporated and condensed into a glass in the atmosphere. This work aimed to estimate the glass transition temperature Tg and possible cooling rates (q) of tektites by the use of differential scanning calorimetry with compensated heat flux (DSC) and Raman high

N. Bagdassarov; D. Neuville; Y. Linard; O. Lukanin; A. Kadik

2003-01-01

60

The theory of jetting - Application to the origin of tektites  

NASA Astrophysics Data System (ADS)

The occurrence of 'jetting' when objects' surfaces converge obliquely, which has been proposed as the basis for the terrestrial-impact origin of tektites, depends on the angle and velocity of their convergence, as well as the objects' material properties. The theory of jetting during the collision of thin plates is here extended to the case of a sphere's impact on a half-space, to model asteroidal impacts at velocities in the 10-30 km/sec range and impact angles of 0 (normal) to 75 deg. Because tektites lack measurable siderophile contamination from projectile material, jetting does not account for the terrestrial impact origin of tektites.

Vickery, Ann M.

1993-10-01

61

3-D laser images of splash-form tektites and their use in aerodynamic numerical simulations of tektite formation  

NASA Astrophysics Data System (ADS)

Ten splash-form tektites from the Australasian strewn field, with masses ranging from 21.20 to 175.00 g and exhibiting a variety of shapes (teardrop, ellipsoid, dumbbell, disk), have been imaged using a high-resolution laser digitizer. Despite challenges due to the samples' rounded shapes and pitted surfaces, the images were combined to create 3-D tektite models, which captured surface features with a high fidelity (?30 voxel mm-2) and from which volume could be measured noninvasively. The laser-derived density for the tektites averaged 2.41 ± 0.11 g cm-3. Corresponding densities obtained via the Archimedean bead method averaged 2.36 ± 0.05 g cm-3. In addition to their curational value, the 3-D models can be used to calculate the tektites' moments of inertia and rotation periods while in flight, as a probe of their formation environment. Typical tektite rotation periods are estimated to be on the order of 1 s. Numerical simulations of air flow around the models at Reynolds numbers ranging from 1 to 106 suggest that the relative velocity of the tektites with respect to the air must have been <10 m s-1 during viscous deformation. This low relative velocity is consistent with tektite material being carried along by expanding gases in the early time following the impact.

Samson, C.; Butler, S.; Fry, C.; McCausland, P. J. A.; Herd, R. K.; Sharomi, O.; Spiteri, R. J.; Ralchenko, M.

2014-05-01

62

3-D laser images of splash-form tektites and their use in aerodynamic numerical simulations of tektite formation  

NASA Astrophysics Data System (ADS)

Ten splash-form tektites from the Australasian strewn field, with masses ranging from 21.20 to 175.00 g and exhibiting a variety of shapes (teardrop, ellipsoid, dumbbell, disk), have been imaged using a high-resolution laser digitizer. Despite challenges due to the samples' rounded shapes and pitted surfaces, the images were combined to create 3-D tektite models, which captured surface features with a high fidelity (?30 voxel mm-2) and from which volume could be measured noninvasively. The laser-derived density for the tektites averaged 2.41 ± 0.11 g cm-3. Corresponding densities obtained via the Archimedean bead method averaged 2.36 ± 0.05 g cm-3. In addition to their curational value, the 3-D models can be used to calculate the tektites' moments of inertia and rotation periods while in flight, as a probe of their formation environment. Typical tektite rotation periods are estimated to be on the order of 1 s. Numerical simulations of air flow around the models at Reynolds numbers ranging from 1 to 106 suggest that the relative velocity of the tektites with respect to the air must have been <10 m s-1 during viscous deformation. This low relative velocity is consistent with tektite material being carried along by expanding gases in the early time following the impact.

Samson, C.; Butler, S.; Fry, C.; McCausland, P. J. A.; Herd, R. K.; Sharomi, O.; Spiteri, R. J.; Ralchenko, M.

2014-04-01

63

Jetting and the origin of tektites  

NASA Technical Reports Server (NTRS)

The scientific consensus is that tektites were produced by impacts on the Earth, but the exact mechanism by impacts might form tektites is still unclear. The most widely cited mechanism is jetting, which results from the extremely high pressures generated at the intersection of two bodies whose surfaces converge obliquely at high speed. Theory of jetting for thin plates is extended to the case of the impact of the sphere onto a half-space. The calculations are done for the impact of a silicate sphere onto a silicate target for impact speeds of 15, 20, and 25 km/sec, spanning the range of reasonable impact speeds for asteroids. The angle of impact is varied from 0 to 75 deg. The mass jetted, the jet velocity, projectile fraction in the jet, azimuthal distribution of the jet, and the phase of the jetted material are calculated as functions of time. The total mass jetted and the overall mass-averages of jet velocity, etc. are also calculated.

Vickery, A. M.

1991-01-01

64

Jetting and the origin of tektites  

NASA Astrophysics Data System (ADS)

The scientific consensus is that tektites were produced by impacts on the Earth, but the exact mechanism by impacts might form tektites is still unclear. The most widely cited mechanism is jetting, which results from the extremely high pressures generated at the intersection of two bodies whose surfaces converge obliquely at high speed. Theory of jetting for thin plates is extended to the case of the impact of the sphere onto a half-space. The calculations are done for the impact of a silicate sphere onto a silicate target for impact speeds of 15, 20, and 25 km/sec, spanning the range of reasonable impact speeds for asteroids. The angle of impact is varied from 0 to 75 deg. The mass jetted, the jet velocity, projectile fraction in the jet, azimuthal distribution of the jet, and the phase of the jetted material are calculated as functions of time. The total mass jetted and the overall mass-averages of jet velocity, etc. are also calculated.

Vickery, A. M.

1991-06-01

65

The oxidation state of iron in tektite glass  

NASA Astrophysics Data System (ADS)

Fe3+/Fe2+ ratios in tektite glass have the potential for constraining the f02-T conditions associated with tektite melts prior to quenching. But, even discounting older analyses, values of Fe3+/Fe2+ in the literature range from zero to 0.82. The authors have analyzed five tektites from populations that have been reported to have Fe3+/Fe2+ ratios both of zero and also a range of ratios up to 0.67. The range they found of 0.02 - 0.12 is in excellent agreement with the literature values that the authors consider to be consistently most reliable and they believe that most if not all Fe3+/Fe2+ ratios in tektites fall within this range.

Fudali, R. F.; Dyar, M. D.; Griscom, D. L.; Schreiber, H. D.

1987-10-01

66

Case of an ivory vertebra.  

PubMed

The differential diagnosis of an osteoblastic vertebral lesion (ivory vertebra) includes metastatic prostate cancer, lung cancer, lymphoma, osteosarcoma and Paget's disease. We report a case of a man who was initially diagnosed with Paget's disease on vertebral biopsy. He failed to respond to conventional bisphosphate therapy. The review of the original biopsy specimen showed metastatic carcinoid tumor involving the bone marrow. The various features of carcinoid tumors metastasizing to the skeleton are briefly reviewed. PMID:11021770

Basaria, S; McCarthy, E F; Belzberg, A J; Ball, D W

2000-09-01

67

Study of the ablative effects on tektite. [reentry trajectories  

NASA Technical Reports Server (NTRS)

The tumbling and surface roughness effects on the trajectory of entry tektite were studied in both free molecular and continuum flows. It is shown that, while surface roughness has negligible effect on trajectory, the tumbling may play an important role in tektite trajectory and the consequent ablation, provided the body shape is different from a sphere. A shape factor B was proposed to measure the shape irregularity and is found to be a good parameter for correlations between body shape and tumbling effects.

Chen, K. K.

1975-01-01

68

Healdsburgite - a New Tektite and Associated Tektite Strewnfield in North Central California  

NASA Astrophysics Data System (ADS)

Erickson, Rolfe; Norwick, Steven; and Byrd, Caitlin, Sonoma State University; Deino, Alan, Berkeley Geochronology Center. I A Distinctive Glass Clast Population In numerous locations in Sonoma and Solano Counties in north central California, over an area of ~ 200 km2, distinctive ~ 1-5 cm dominantly ovoid glass clasts are found as part of the pebble population in young sediments. They are composed of black massive aphyric nonvesicular glass whose surfaces are totally covered with a texture of adjoining small deep pits and grooves. The pits are hemispherical, 1-10 mm across, and join at sharp edges composed of straight segments. The grooves, where present, are the width and depth of the pits and may be up to several cm long and vermicular. Some clasts have internal layering resembling flow textures. These glass objects were brought to our attention by a local resident, Ms. Diane Moore, about 20 years ago. Four of these glass clasts from widely separated locations in the exposure area have been dated by the laser incremental-heating Ar39/Ar40 method at the Berkeley Geochronology Center, with an age of ~ 2.81 Ma (upper Pliocene). The four samples have mutually overlapping ages at one sigma. Chemical analyses of the 10 major and 50 minor elements, of four widely separated clasts, were obtained at commercial laboratories. The clasts are all rhyolites and cluster tightly on the TAS diagram of Le Maitre et al (2002). All available data show that all these pitted and grooved clasts are part of a single population. II. The Clasts are Tektites We believe these distinctive glass clasts to be tektites for the following reasons: 1. Pits are always present and wholly cover the clast surface. Perhaps half the clasts also have distinctive irregular vermicular grooves superimposed on the pitted surface. This surface pattern is like those on other long-recognized 'classic' tektites, like indochinites. The clasts look like tektites; compare McCall (2001, Figure 2.30) for example. 2. The clasts show no significant weathering. Once cleaned of adhering sediment, they are solid and vitreous. There are also no cases of partial development of the distinctive surface texture, as might be expected if it were a consequence of in situ weathering. 3. The clasts do not have a detrital origin; they are not obsidian pebbles. The pit and groove pattern, which is uniformly well developed on clasts throughout the distribution area, is fragile and could not have survived much transport. 4. The clasts are not volcanic in origin (i.e., 'apache tears'). The pit and groove pattern contrasts with the relatively smooth surface of apache tears, and the clasts bear no resemblance to lapilli. Their distinctive appearance and uniform age and chemistry suggests that these objects are tektites in a strewnfield, only a small part of which has been identified to date. No related impact site has been identified, but clast composition suggests a continental target. We suggest these clasts, heretofore informally called Healdsburg glass, be recognized as tektites and called healdsburgites, in the manner of other tektites. A public domain PDF format copy of this poster will be available for download in the digital archive in the Sonoma State University library.

Erickson, R. C.; Deino, A. L.; Norwick, S. A.; Byrd, C.

2012-12-01

69

Vector Diagram of the Chemical Compositions of Tektites and Earth Lavas.  

National Technical Information Service (NTIS)

The chemical compositions of tektites and various volcanic glasses similar, in composition to tektites, were compared by the petrochemical method. The advantage of this method is that a large number of chemical analyses of igneous rocks can be graphically...

L. G. Kvasha G. S. Gorshkov

1973-01-01

70

New estimates of area and mass for the North American tektite strewn field  

NASA Technical Reports Server (NTRS)

A revised estimate is given for the total mass of the North American tektite material, which is based on a concept of patches or rays of distribution rather than on a continuous tektite and microtektite blanket. This concept yields a total mass of about 3 x 10 to the 14th g, which is less than a third of previous estimates. The shape of the North American tektite strewn field is in agreement with other tektite strewn fields.

Koeberl, C.

1989-01-01

71

Georgiaites: Tektite Geochemistry and Stratigraphic Occurrence in East-Central Georgia  

Microsoft Academic Search

Georgia tektites ('georgiaites') were produced by the fusion of target rock in a late Eocene terrestrial impact event. Relative to other North American tektites, georgiaites are enriched in silica and potassium but depleted in all other major elements. Georgia tektites also have the lowest REE abundances and have lower incompatible trace element abundances. They have a mean potassium-argon age of

Edward Francis Albin Jr.

1997-01-01

72

Magnetic susceptibility of tektites and some other glasses  

USGS Publications Warehouse

The magnetic susceptibility at several magnetic field strengths of about thirty tektites from various localities have been measured. The susceptibility ranges from 2 ?? 10-6 to about 7.9 ?? 10-6 e.m.u./g. Tektites from a given locality have similar susceptibilities. The intensity of magnetization of all the tektites measured is zero or very small. For comparison, the same measurements have been made on about thirty obsidians. The magnetic susceptibilities cover approximately the same range, but the intensity of magnetization of the impurity was found to be much higher. By heating the obsidians to 1450??C the intensity of magnetization was reduced to zero. From the above data, it is shown that the tektites must have been heated well above 1400??C, and that essentially all the iron is in solution. On the other hand, the evidence shows that obsidians have not been heated much above this temperature, and that there is a significant amount of undissolved iron in the glass, probably as magnetite. Further, if tektites are extraterrestrial, they probably entered the earth's atmosphere as a glass. ?? 1959.

Senftle, F. E.; Thorpe, A.

1959-01-01

73

Beryllium-10 in Australasian tektites - Evidence for a sedimentary precursor  

NASA Technical Reports Server (NTRS)

Each of seven Australasian tektites contains about 100 micron atoms of beryllium-10 (half-life, 1.53 million years) per gram. Cosmic-ray bombardment of the australites cannot have produced the measured amounts of beryllium-10 either at the earth's surface or in space. The beryllium-10 contents of these australites are consistent with a sedimentary precursor that adsorbed from precipitation beryllium-10 produced in the atmosphere. The sediments must have spent several thousand years at the earth's surface within a few million years of the tektite-producing event.

Pal, D. K.; Moniot, R. K.; Kruse, T. H.; Herzog, G. F.; Tuniz, C.

1982-01-01

74

Soret diffusion: A possible cause of compositional heterogeneity within tektites  

NASA Technical Reports Server (NTRS)

Although a terrestrial origin for tektites is well-established on geochemical evidence, the physical processes involved in tektite formation have been largely ignored by geochemists and petrologists. For example, two observations that potentially bear on the physics of their origin are the following: (1) The flange of an australite is often more heterogeneous than its core; and (2) microtektites are compositionally more diverse than tektites. The first observation contradicts the traditional view of flange formation since a second heating to super-liquidus temperatures during atmospheric re-entry should, by chemical diffusion and mixing, have tended to homogenize the melt as it flowed off the leading edge of the core to form the flange. Analyses of an australite flange have been performed by electron microprobe. The results of those analyses emphasize the magnitude of the heterogeneity, as well as the well-defined elemental correlations that may constrain the process responsible for it. The second observation that the bulk compositions of microtektites are more divers than the tektites within the same strewnfield is a well-known characteristic, for which no quantitative explanation has been offered. The current investigation has involved the analysis of 43 Australasian microtektites from the Wharton Basin by electron microprobe, as well as trace-element abundances on fifteen of these microtecktites by INAA.

Delano, J. W.; Liu, Y.-G.; Schmitt, R. A.

1993-01-01

75

Dissecting the Illegal Ivory Trade: An Analysis of Ivory Seizures Data  

PubMed Central

Reliable evidence of trends in the illegal ivory trade is important for informing decision making for elephants but it is difficult to obtain due to the covert nature of the trade. The Elephant Trade Information System, a global database of reported seizures of illegal ivory, holds the only extensive information on illicit trade available. However inherent biases in seizure data make it difficult to infer trends; countries differ in their ability to make and report seizures and these differences cannot be directly measured. We developed a new modelling framework to provide quantitative evidence on trends in the illegal ivory trade from seizures data. The framework used Bayesian hierarchical latent variable models to reduce bias in seizures data by identifying proxy variables that describe the variability in seizure and reporting rates between countries and over time. Models produced bias-adjusted smoothed estimates of relative trends in illegal ivory activity for raw and worked ivory in three weight classes. Activity is represented by two indicators describing the number of illegal ivory transactions – Transactions Index – and the total weight of illegal ivory transactions – Weights Index – at global, regional or national levels. Globally, activity was found to be rapidly increasing and at its highest level for 16 years, more than doubling from 2007 to 2011 and tripling from 1998 to 2011. Over 70% of the Transactions Index is from shipments of worked ivory weighing less than 10 kg and the rapid increase since 2007 is mainly due to increased consumption in China. Over 70% of the Weights Index is from shipments of raw ivory weighing at least 100 kg mainly moving from Central and East Africa to Southeast and East Asia. The results tie together recent findings on trends in poaching rates, declining populations and consumption and provide detailed evidence to inform international decision making on elephants.

Underwood, Fiona M.; Burn, Robert W.; Milliken, Tom

2013-01-01

76

Ages of Zhamanshin Crater Impactites and Projectile Tektites  

NASA Astrophysics Data System (ADS)

The Zhamanshin impact crater is the only one in which impactites have been found together with layered Muong Nong-type glasses and tektites-irghizites associated with microtektites. The K-Ar ages of these tektites vary from 0.69 to 5.2 m.y, while fission-track ages vary from 0.75 to 1.08 m.y. All geological data demonstrate a 10,000-year age of the impact event; this age coincides with the age of the Pleistocene/Holocene boundary [1]. A very young fission-track age of the Zhamanshin basic impactites was obtained [2]; however, these results were contested [3]. To eliminate the suggested high differences in thermal stability between basic and acidic Zhamanshin glasses, glass heating experiments were performed. The ~0.01-m.y. age (Table 1) of the basic impact glass collected from the deep bore holes shows that secondary heating and fission-track annealing by Sun-heating, fires, etc., must be excluded. The same age differences (1-2 orders of magnitude) were confirmed by thermoluminescence. Furthermore, in the Muong Nong-type Zhamanshinite, which is full of target rock inclusions, two different fission-track groups were recognized (Table 2). Therefore the Muong Nong-type Zhamanshinites are not local impactites, but instead represent a part of the projectile, as first suggested by J. O'Keefe [4]. In the Zhamanshin case, few tektites that fell opposite to impact explosion were partially remelted, while tektites that landed just after explosion are practically intact, like all other Australasian tektites [1,5]. Tables 1 and 2 appear here in the hard copy. References: [1] Izokh E. (1991) Soviet Geol. and Geophys., 32, 1-10. [2] Kashkarov L. et al. (1987) 2nd Intl. Conf. on Nat. Glasses, Prague, 199-202. [3] Koeberl C. and Storzer D., ibid., 207-213. [4] O'Keefe J. (1987) Meteoritics, 22, 219-228. [5] Izokh E. and Le duc An (1983) Meteoritika, 42, 158-169.

Izokh, E. P.; Kashkarov, L. L.; Korotkova, N. N.

1993-07-01

77

Using morphometric and analytical techniques to characterize elephant ivory.  

PubMed

There is a need to characterize Asian elephant ivory and compare with African ivory for controlling illegal trade and implementation of national and international laws. In this paper, we characterize ivory of Asian and African elephants using Schreger angle measurements, elemental analysis {X-ray fluorescence (XRF), inductively coupled plasma-atomic emission spectroscopy (ICP-AES), and inductively coupled plasma-mass spectroscopy (ICP-MS)} and isotopic analysis. We recorded Schreger angle characteristics of elephant ivory at three different zones in ivory samples of African (n=12) and Asian (n=28) elephants. The Schreger angle ranged from 32 degrees to 145 degrees and 30 degrees to 153 degrees in Asian and African ivory, respectively. Elemental analysis (for Asian and African ivory) by XRF, ICP-AES and ICP-MS provided preliminary data. We attempted to ascertain source of origin of Asian elephant ivory similarly as in African ivory based on isotopes of carbon, nitrogen and strontium. We determined isotopic ratios of carbon (n=31) and nitrogen (n=31) corresponding to diet and rainfall, respectively. Reference ivory samples from five areas within India were analyzed using collagen and powder sample and the latter was found more suitable for forensic analysis. During our preliminary analysis, the range of delta13C values (-13.6+/-0.15 per thousand and -25.6+/-0.15 per thousand) and delta15N values (10.2+/-0.15 per thousand and 3.5+/-0.15 per thousand) were noted. PMID:16891073

Singh, Rina Rani; Goyal, Surendra Prakash; Khanna, Param Pal; Mukherjee, Pulok Kumar; Sukumar, Raman

2006-10-16

78

[Preoperative diet and complete dentures in Ivory Coast].  

PubMed

The toothless patients of developing country are a real problem of nutrition. The practitioners are in the habit of doing the prostheses restoration wit hoof thinking of alimentation. In this work, authors show the energetic and protein malnutrition of the toothless patients of Cote d'lvoire and propose a hyperprotein diet with their alimentation habit in order to prepare the psychic and physic site who must receive complete prostheses. PMID:16032941

Ndindin, A C; Guinan, J C; Amani, S R; Konan, K; Barro, M E; Tebi, A; Assi, K D

2005-03-01

79

[Chronic lymphoid leukemia in the Ivory Coast. (69 cases)].  

PubMed

We report on sixty-nine cases of chronic lymphocytic leukaemia. This report describes the result over a period of eleven years. We have pointed out that chronic lymphocytic leukaemia is most frequent in adults. It occurs on adult (mean age fifty years) with a maximum between forty-one and fifty years old. It is in agreement with others series described elsewhere in Africa. We have noted a predominance in women. The splenomegalia is the predominant clinical sign as it was related also in Africa countries. PMID:1666168

Toutoukpo, Y; Tea, N; Rain, J D

1991-01-01

80

Demand for Urban Housing in the Ivory Coast.  

National Technical Information Service (NTIS)

During recent years the large African cities have known a very strong population growth. The satisfaction of housing needs has therefore become a policy priority in many countries. The paper contains the first systematic estimates of the income and price ...

C. Grootaert J. L. Dubois

1986-01-01

81

Trace element concentration and distribution in ivory  

NASA Astrophysics Data System (ADS)

The trace element content and distribution in ivory from elephants and hippopotami were measured for both natural elements and elements present due to pollution. The National Accelerator Centre Nuclear Microprobe was used to investigate trace elements heavier than Ca, and distributions of these trace elements were measured over small areas (ca. 1 mm 2), using the Dynamic Analysis imaging method in the GeoPIXE software package. Quantitativity of elemental maps was checked by complementary point analyses in the same area as where the elemental maps were taken from and found to be accurate to within around 10%. The possibility of locating ivory on the basis of the trace element concentrations, determined by the environment in which these animals live, was demonstrated by using correspondence analysis.

Prozesky, V. M.; Raubenheimer, E. J.; Van Heerden, W. F. P.; Grotepass, W. P.; Przybylowicz, W. J.; Pineda, C. A.; Swart, R.

1995-09-01

82

Discovery of the most distal Ries tektites found in Lower Silesia, southwestern Poland  

NASA Astrophysics Data System (ADS)

We report the first occurrence of moldavites in Poland. This discovery confirms the hypothesis that moldavites could have been distributed up to 500 km from the Ries crater in Germany. The tektites were reworked from Middle Miocene sediments and redeposited in Late Miocene (Pannonian) fluvial deposits of the Gozdnicka Formation in Lower Silesia. The Polish moldavites are represented by nine (<8 mm) fragments with a total of 0.471 g. The lack of the autochthonous tektites indicates that tektites investigated here had to be redeposited in a fluvial environment, probably from the Lusatian area. The chemical composition of the Polish moldavites plots in the same area with those from other localities.

Brachaniec, Tomasz; Szopa, Krzysztof; Karwowski, ?Ukasz

2014-05-01

83

Source of Australasian Tektites: Investigating Possible Impact Sites in Laos  

NASA Astrophysics Data System (ADS)

Approximately 770,000 years ago an asteroid or comet crashed with the Earth somewhere in southeast Asia, in what was arguably the largest terrestrial impact in the past several 10's of millions of years. Evidence for this impact is not a crater but ejecta from a crater - tektites, microtektites and impact debris - which are found over more than one-tenth of the Earth's surface. Despite its relative youth and the large size of the ejecta field, the structure produced by this impact has not yet been discovered. In the past few years searches have focused on eastern Indochina, specifically in northeast Thailand [1], Cambodia [2] and Laos [3]. In February, 1995 we spent ten days in southern Laos looking for the source crater. The trip was an outgrowth of an investigation using satellite imagery and a digital topographic database, which suggested the impact site might be one of several structures in southern Laos. The primary purpose of the trip was to investigate these structures; a secondary objective was to document tektite localities and to collect samples of known provenance. One crater-like structure identified from digital topographic and multispectral images seemed to be especially interesting due to its quasi-circular shape and relatively youthful appearance. Three additional suspicious structures were identified near this primary target, but these appeared much more subdued and highly eroded. All of these features lie in southern Laos within the broad region of Mesozoic marine sedimentary rocks, primarily sandstones interbedded with shales and limestones, which covers much of central Indochina. The top-priority structure, centered at 16.35 degrees N/106.15 degrees E, is a ring of steep-sided hills 35 to 40 km in diameter, rising 70 to several hundred meters above the surrounding flat plain. It also has a central elevated area rising about 100 meters above the floor, suggesting an eroded central uplift. Despite difficult field conditions we successfully reconnoitered all four potential impact structures. None showed obvious evidence of formation by extraterrestrial impact. A small domal feature near the city of Savannakhet is probably a salt diapir, and a nearby larger eviscerated domal form to the southeast is similarly related to broadscale evaporite tectonics. The 90 km diameter Savannakhet Basin shows no evidence of impact damage and has been a stable sedimentary trap since Mesozoic times. Our prime target, the 35 to 40 km diameter craterlike depression south of Muong Phin, is an erosional feature etched into upper layers of a sedimentary section. Its "central peak" is a fortuitous resistant erosional remnant. Not a great deal of time was available for the secondary objective, i.e., to look for tektites which occur in Indochina in two forms: layered form (Muong Nong-type) which appear to have flowed over the ground and splash form which solidified during atmospheric flight. We identified ten new sites and collected samples from some of these sites. Nine sites were in southern Laos, and all contained only layered tektites. Three of these sites were found by us in road-material quarries south of the village of Xeno. Here the yellow loessial soil overburden had been scraped off to expose a laterite layer rich in quartz pebbles, where small tektites were found after only a short search. This same technique, looking for road-material quarries beside the highway, was used to find layered tektites by Wasson's 1994 field expedition in Thailand [1] about 200 km to the southwest of our areas in Laos. Our new sites support a working theory [3, 4] that this area is rich in layered tektites but there are no splash-form tektites over a broad area of southern NE Thailand and neighboring Laos. The approximate dimensions of this area appears to be at least 200 by 350 km. Acknowledgments: Work was supported in part by NASA and the Barringer Crater Company. References: [1] Wasson J. T. et al. (1995) JGR, in press. [2] Hartung J. and Koeberl C. (1994) Meteoritics, 29, 411-416. [3] Schnetzler C. C. (1992) Meteoritics, 27, 1

Schnetzler, C. C.; McHone, J. F.

1995-09-01

84

New approach to the origin of the tektite in China  

NASA Technical Reports Server (NTRS)

The tektites in China are distributed on the north part of Australia - Southeastern Asia strewfield of tektite: Leizhou Peninsula of Guangdong Province and Hainan Island, and located exactly at the boundary between Zanjiang Formation and Beihai Formation. A new hypothesis is suggested: During the end of Lower Pleistocene, a comet of special components from the outer part of the Solar System approached the Earth, and then it was captured by the Earth, when it came approximately to the Roche's limet. It was crushed into countless fragments, detritus and dusts, which rotated around the Earth, probably far above the Earth's atmosphere, as a cloud ring. Under the action of crushing energy they could be in the situation of liquid-melt drop in the almost vacuum circumstances and the flow and bubble structure were formed. During their rotation the climate became anomalous and the violet Fe-Si concentration were formed on the surface of sediments. After a rather short time of rotation the unstable ring was broken and the fragments impacted on the hard ground instantaneously.

Qin-Wen, Zhang; Dao-Yi, XU; Zheng, Yan

1988-01-01

85

Upper Eocene tektite and impact ejecta layer on the Continental Slope off New Jersey  

Microsoft Academic Search

During Leg 150 of the Ocean Drilling Project (ODP) two sites (903C and 904A) were cored which have sediments of the same biostratigraphic age as the upper Eocene tektite-bearing ejecta layer at Deep Sea Drilling Project (DSDP) Site 612. Core 45X from ODP Site 904A (~ 4 km north of Site 612) contains a 5-cm-thick tektite-bearing ejecta layer and Core

B. P. Glass; C. Koeberl; J. D. Blum; C. M. G. McHugh

1998-01-01

86

Report of centimeter-sized tektites in Pima County, Arizona, cannot be verified  

NASA Technical Reports Server (NTRS)

Glassy objects reportedly found in Pima County, Arizona, have been identified as tektites. A field survey of the area where they were said to occur, however, did not produce any other tektites, nor did it reveal any other geologic features that might indicate a nearby impact crater. The major-, minor-, and trace-element composition of one specimen is similar to those measured in indochinites, which suggests the objects reportedly from Pima County were instead transported to southern Arizona from Indochina by people.

Kring, David A.; Hildebrand, Alan R.; Drake, Michael J.; Melosh, H. Jay; Vickery, Ann M.

1995-01-01

87

CHLORINE, BROMINE, IODINE, AND URANIUM IN TEKTITES, OBSIDIANS, AND IMPACT GLASSES  

Microsoft Academic Search

The concentrations of chlorine, bromine, iodine, and uranium were determined in tektites, obsidians, and impact glasses by neutron activation. The average concentrations in parts per million for C1, Br, I, and U in tektites are 2.8, 0.17, 0.28, and 4.3, respectively; in obsidians, 473, 1.2, 1.0, and 11, respectively; and in impact glasses, 20, 0..26, 1.8, and 1.8, respectively. The

V. J. Becker; O. K. Manuel

1972-01-01

88

Aerodynamic Analysis of Tektites and Their Parent Bodies  

NASA Technical Reports Server (NTRS)

Experiment and analysis indicate that the button-type australites were derived from glassy spheres which entered or re-entered the atmosphere as cold solid bodies; in case of average-size specimens, the entry direction was nearly horizontal and the entry speed between 6.5 and 11.2 km/sec. Terrestrial origin of such spheres is impossible because of extremely high deceleration rates at low altitudes. The limited extension of the strewn fields rules out extraterrestrial origin of clusters of such spheres because of stability considerations for clusters in space. However, tektites may have been released as liquid droplets from glassy parent bodies ablating in the atmosphere of the earth. The australites then have skipped together with the parent body in order to re-enter as cold spheres. Terrestrial origin of a parent body would require an extremely violent natural event. Ablation analysis shows that fusion of opaque siliceous stone into glass by aerodynamic heating is impossible.

Adams, E. W.; Huffaker, R. M.

1962-01-01

89

75 FR 53012 - Culturally Significant Object Imported for Exhibition Determinations: “Ivory Mirror Case”  

Federal Register 2010, 2011, 2012, 2013

...Significant Object Imported for Exhibition Determinations: ``Ivory Mirror Case'' SUMMARY: Notice is hereby given of the following determinations...determine that the object to be included in the exhibition ``Ivory Mirror Case,'' imported from abroad for temporary exhibition...

2010-08-30

90

Ancient biodeterioration: an FT–Raman spectroscopic study of mammoth and elephant ivory  

Microsoft Academic Search

Raman spectra of mammoth ivory specimens have been recorded using near-infrared excitation, and comparisons made with modern\\u000a Asian and African elephant ivories. Whereas the most ancient mammoth ivory (60–65 ky) showed no evidence for an organic collagen\\u000a component, more recent samples of mammoth ivory indicated that some preservation had occurred, although with biodeterioration\\u000a of the protein structure exhibited by the amide

Howell G. M. Edwards; Susana E. Jorge Villar; Nik F. Nik Hassan; Nlin Arya; Sonia O'Connor; Donna M. Charlton

2005-01-01

91

Tektites: Origin as melts produced by the impact of small projectiles onto dry targets  

NASA Technical Reports Server (NTRS)

The formation of tektites in general and layered tektites in particular seems to require a very special kind of cratering event. Evidence for the formation of pools of melt free of unmelted clasts has not been reported for the well-studied terrestrial craters such as Manicouagan or Ries. It is suggested that large amounts of relict-free melt were produced only when a sizeable fraction of the cratered target consisted of dry, high-porosity materials such as aeolian sediments. Since dry, high-porosity target materials are always confined to the outer 100 to 200 m of the Earth, the fraction of melt produced melt is probably higher in small (radius 50 to 500 m) craters than in large (r greater than 1 km) craters. Another reason to infer that the Southeast Asian tektites were produced in a multitude of small craters is the wide distribution of layered tektites. The file spans at least 1200 km, which would require ballistic ejection at velocities greater than 2 km s(-1) if all melt was generated in a single crater. It seems impossible to devise a scenario that would lead to the deposition of primary melt as a crystal-free pool at a distance of 600 km from the crater.

Wasson, John T.

1988-01-01

92

Source of the Australasian tektite strewn field - A possible off-shore impact site  

NASA Technical Reports Server (NTRS)

Although there is a preponderance of evidence that tektites were formed by asteroid impacts on the earth, no source crater has been found for the largest and youngest of the strewn fields - the Austalasian strewn field. A combined Seasat/Geos 3 altimeter data set of sea surface heights in the northern portion of the Australasian strewn field has been examined for negative gravity anomalies on the continental shelf and slope which might be related to the source crater for these tektites. A large negative anomaly called the Qui Nhon Slope Anomaly is a sea surface depression of approximately 1.5 meters over an area of 100 km diameter. It corresponds to a gravity anomaly of about -50 mgal. It is proposed that this anomaly may be due to the impact structure that produced the Australasian strewn field.

Schnetzler, C. C.; Walter, L. S.; Marsh, J. G.

1988-01-01

93

Vapor pressure and vapor fractionation of silicate melts of tektite composition  

USGS Publications Warehouse

The total vapor pressure of Philippine tektite melts of approximately 70 per cent silica has been determined at temperatures ranging from 1500 to 2100??C. This pressure is 190 ?? 40 mm Hg at 1500??C, 450 ?? 50 mm at 1800??C and 850 ?? 70 mm at 2100?? C. Determinations were made by visually observing the temperature at which bubbles began to form at a constant low ambient pressure. By varying the ambient pressure, a boiling point curve was constructed. This curve differs from the equilibrium vapor pressure curve due to surface tension effects. This difference was evaluated by determining the equilibrium bubble size in the melt and calculating the pressure due to surface tension, assuming the latter to be 380 dyn/cm. The relative volatility from tektite melts of the oxides of Na, K, Fe, Al and Si has been determined as a function of temperature, total pressure arid roughly, of oxygen fugacity. The volatility of SiO2 is decreased and that of Na2O and K2O is increased in an oxygen-poor environment. Preliminary results indicate that volatilization at 2100??C under atmospheric pressure caused little or no change in the percentage Na2O and K2O. The ratio Fe3 Fe2 of the tektite is increased in ambient air at a pressure of 9 ?? 10-4 mm Hg (= 106.5 atm O2, partial pressure) at 2000??C. This suggests that tektites were formed either at lower oxygen pressures or that they are a product of incomplete oxidation of parent material with a still lower ferricferrous ratio. ?? 1964.

Walter, L. S.; Carron, M. K.

1964-01-01

94

Decompression mechanism of ferric iron reduction in tektite melts during their formation in the impact process  

Microsoft Academic Search

The analysis of available data on the Fe3+\\/Fe2+ ratio of impact-produced glasses showed that tektites and some other types of impact glasses are reduced compared with the\\u000a precursor target material. Possible reasons for the change in the degree of iron oxidation in the impact process are still\\u000a debatable. Based on the analysis of redox reactions in relatively simple systems with

O. A. Lukanin; A. A. Kadik

2007-01-01

95

The chemical durability of tektites - A laboratory study and correlation with long-term corrosion behavior  

Microsoft Academic Search

Leach tests carried out on tektite specimens (indochinites and australites) under high-dilution conditions show a common behavior characterized by low leach rates (0.00018 g\\/sq m per d, or 7.2 x 10 to the -12th m\\/d at 23 C) and an activation energy of (79,600 + or - 700 J\\/mol). The extent of selective leaching is very small, of the order

A. Barkatt; M. S. Boulos; W. Sousanpour; M. A. Boroomand; P. B. Macedo; J. A. O'Keefe

1984-01-01

96

The chemical durability of tektites - A laboratory study and correlation with long-term corrosion behavior  

NASA Technical Reports Server (NTRS)

Leach tests carried out on tektite specimens (indochinites and australites) under high-dilution conditions show a common behavior characterized by low leach rates (0.00018 g/sq m per d, or 7.2 x 10 to the -12th m/d at 23 C) and an activation energy of (79,600 + or - 700 J/mol). The extent of selective leaching is very small, of the order of 10 to the -8th m. Extrapolation of test results over the lifetime of the tektites gives an excellent agreement with field observations on the extent of corrosion, and this is an important step in establishing the validity of laboratory tests as a basis for the development of models and predictions concerning long-term durabilities at least in the limiting case of high dilution or rapid flow. The results are also shown to be in agreement with various previous observations on the corrosion resistance of tektites. The chemical durability of tektites is observed to be consistent with their composition, highlighting requirements of high corrosion resistance in glasses; these requirements include a silica content in excess of 67 mol percent, an extremely low water content, and an alkali content which is low both absolutely and relative to the di- and poly-valent metal oxide levels. It is shown that artificial glasses which fulfil these criteria are no less corrosion-resistant than the corresponding natural glasses. These conclusions have bearing on the development, as well as on the evaluation, of glasses intended for very long service, such as radioactive waste vitrification media.

Barkatt, A.; Boulos, M. S.; Barkatt, A.; Sousanpour, W.; Boroomand, M. A.; Macedo, P. B.; Okeefe, J. A.

1984-01-01

97

Preliminary discussion on the origin of Lei-gong-mo (tektites)  

NASA Technical Reports Server (NTRS)

The specimens of lei-gong-mo (tektites) were collected from Hainan Island and Leizhow Peninsula during the period from 1963 to 1975. The distribution, forms, sculpture, abration surface (bald spot), internal structure and chemical composition of lei-gong-mo are discussed. Studies of these materials lead to the following conclusions: (1) the specimens of lei-gong-mo can be morphologically divided into eight types; (2) the sculptures on the surface of lei-gong-mo are probably due to the corrosion effect of volcanic gas, and the abration surface due to the aerodynamic corrosion; (3) the folded structures in the layered lei-gong-mo (Muong Nong-type tektite) seem hardly to be formed by an impact of meteorites, but they might be produced in the magma flow process when the lei-gong-mo was melting within the crater vent; and (4) the comparison of its chemical composition with that of basalt from Hainan Island does not show that lei-gong-mo came from the local volcano. The hypothesis of the lunar volcanic origin of tektites is examined.

Baoyin, Y.

1983-01-01

98

Backscattering Mössbauer MIMOS II and XRF studies on tektites from different strewn fields  

NASA Astrophysics Data System (ADS)

Room temperature 57Fe Mössbauer spectroscopy has been used to obtain information on the redox and coordination of iron in tektites. A MIMOS II spectrometer in backscattering geometry has been used in the study, so that no sample preparation at all was required. X-ray fluorescence has been used to determine the composition of the tektites. Mössbauer spectra have been deconvoluted using three extended Voigt-based profiles to allow quantitative analysis of iron atoms valence and coordination. In all tektites, the Fesites have been distinguished in Fe with octahedral and tetrahedral coordination. The Feoctahedral sites show a region of isomer shift (IS) and quadrupole splitting (QS), IS 1.02-1.14 mm/s and QS 1.82-2.12 mm/s, relative to -Fe. The Fetetrahedral sites show a region of hyperfine parameters of IS = 0.59-0.89 mm/s and QS = 1.14-1.60 mm/s. The Fe3+sites show IS = 0.11-0.33 mm/s and QS = 0.02-0.04 mm/s. The Fe3+/Fe2+ ratio was found to be 0.025-0.149.

Costa, B. F. O.; Klingelhöfer, G.; Panthöfer, M.; Alves, E. I.

2014-04-01

99

Source-area determination of elephant ivory by isotopic analysis  

Microsoft Academic Search

RECENT international efforts to conserve the African elephant Loxodonta africana prompted us to seek an appropriate method for determining the area from which individual tusks were derived. Trace element analysis of ivory has indicated the potential of chemical analysis for source identification1, but recent isotopic studies of African mammals2-5 suggest another approach. Stable carbon isotope ratios (13C\\/12C) in elephant bone

N. J. van der Merwe; J. A. Lee-Thorp; J. F. Thackeray; A. Hall-Martin; F. J. Kruger; H. Coetzee; R. H. V. Bell; M. Lindeque

1990-01-01

100

Tektites in Cretaceous-Tertiary boundary rocks on Haiti and their bearing on the Alvarez impact extinction hypothesis  

USGS Publications Warehouse

Relic tektites are associated with a Pt-group metal abundance anomaly and shocked minerals in a thin marl bed that marks the K-T boundary on Haiti. The presence of these three impact-produced materials at the precise K-T boundary enormously strengthens the Alvarez impact extinction hypothesis. The Haitian tektites are the first datable impact products in K-T boundary rocks, and 40Ar-39Ar ages of the glass show that the K-T boundary and impact event are coeval at 64.5 ?? 0.1 Ma. -from Author

Izett, G. A.

1991-01-01

101

Theory of Tumbling Bodies Entering Planetary Atmospheres with Application to Probe Vehicles and the Australian Tektites  

NASA Technical Reports Server (NTRS)

The tumbling motion of aerodynamically stable bodies entering planetary atmospheres is analyzed considering that the tumbling, its arrest, and the subsequent oscillatory motion are governed by the equation for the fifth Painleve' transcendent. Results based on the asymptotic behavior of the transcendent are applied to study (1) the oscillatory behavior of planetary probe vehicles in relation to aerodynamic heating and loads and (2) the dynamic behavior of the Australian tektites on entering the Earth's atmosphere, under the hypothesis that their origin was the Moon.

Tobak, Murray; Peterson, Victor L.

1964-01-01

102

Meteoroid mayhem in Ole Virginny: Source of the North American tektite strewn field  

NASA Astrophysics Data System (ADS)

New seismic reflection data from Chesapeake Bay reveal a buried, 85-km-wide, 1.5-2.0-km-deep, peak-ring impact crater, carved through upper Eocene to Lower Cretaceous sedimentary strata and into underlying pre-Mesozoic crystalline basement rocks. A polymictic, late Eocene impact breccia, composed mainly of locally derived sedimentary debris (determined from four continuous cores), surrounds and partly fills the crater. Structural and sedimentary characteristics of the Chesapeake Bay crater closely resemble those of the Miocene Ries peakring crater in southern Germany. We speculate that the Chesapeake Bay crater is the source of the North American tektite strewn field.

Poag, C. Wylie; Powars, David S.; Poppe, Lawrence J.; Mixon, Robert B.

1994-08-01

103

Impact origin of the Chesapeake Bay structure and the source of the North American tektites  

USGS Publications Warehouse

Seismic profiles, drill core samples, and gravity data suggest that a complex impact crater ???35.5 million years old and 90 kilometers in diameter is buried beneath the lower Chesapeake Bay. The breccia that fills the structure contains evidence of shock metamorphism, including impact melt breccias and multiple sets of planar deformation features (shock lamellae) in quartz and feldspar. The age of the crater and the composition of some breccia clasts are consistent with the Chesapeake Bay impact structure being the source of the North American tektites.

Koeberl, C.; Poag, C. W.; Reimold, W. U.; Brandt, D.

1996-01-01

104

Meteoroid mayhem in Ole Virginny: source of the North American tektite strewn field  

USGS Publications Warehouse

New seismic reflection data from Chesapeake Bay reveal a buried, 85-km-wide, 1.5-2.0-km-deep, peak-ring impact crater, carved through upper Eocene to Lower Cretaceous sedimentary strata and into underlying pre-Mesozoic crystalline basement rocks. A polymictic, late Eocene impact breccia, composed mainly of locally derived sedimentary debris (determined from four continuous cores), surrounds and partly fills the crater. Structural and sedimentary characteristics of the Chesapeake Bay crater closely resemble those of the Miocene Ries peak-ring crater in southern Germany. It is speculated that the Chesapeake Bay crater is the source of the North American tektite strewn field. -Authors

Poag, C. W.; Powars, D. S.; Poppe, L. J.; Mixon, R. B.

1994-01-01

105

Impact Origin of the Chesapeake Bay Structure and the Source of the North American Tektites  

NASA Astrophysics Data System (ADS)

Seismic profiles, drill core samples, and gravity data suggest that a complex impact crater ~35.5 million years old and 90 kilometers in diameter is buried beneath the lower Chesapeake Bay. The breccia that fills the structure contains evidence of shock metamorphism, including impact melt breccias and multiple sets of planar deformation features (shock lamellae) in quartz and feldspar. The age of the crater and the composition of some breccia clasts are consistent with the Chesapeake Bay impact structure being the source of the North American tektites.

Koeberl, Christian; Poag, C. Wylie; Reimold, Wolf Uwe; Brandt, Dion

1996-03-01

106

Biodegradation of ivory (natural apatite): possible involvement of fungal activity in biodeterioration of the Lewis Chessmen.  

PubMed

Fungal biodeterioration of ivory was investigated with in vitro inoculation of samples obtained from boar and walrus tusks with the fungi Aspergillus niger and Serpula himantioides, species of known geoactive abilities. A combination of light and scanning electron microscopy together with associated analytical techniques was used to characterize fungal interactions with the ivory, including changes in ivory composition, dissolution and tunnelling, and the formation of new biominerals. The research was aimed at providing further understanding of the potential roles of fungi in the colonization and deterioration of ivory in terrestrial environments, but also contributes to our knowledge regarding the possible origins of the surface damage observed on early medieval sculptures made largely from walrus tusks, referred to as 'the Lewis hoard of gaming pieces', that were presumably produced for playing chess. The experiments have shown that the possibility of damage to ivory being caused by fungi is realistic. Scanning electron microscopy revealed penetration of fungal hyphae within cracks in the walrus tusk that showed also widespread tunnelling by fungal hyphae as well as 'fungal footprints' where the surface was etched as a consequence of mycelial colonization. Similar phenomena were observed with boar tusk ivory, while production of metabolites could lead to complete dissolution of the sample. Colonization of ivory and/or exposure to fungal activity lead to extensive secondary biomineral formation, and this was identified as calcium oxalate, mainly as the monohydrate, whewellite. PMID:23157656

Pinzari, Flavia; Tate, James; Bicchieri, Marina; Rhee, Young Joon; Gadd, Geoffrey Michael

2013-04-01

107

Ancient biodeterioration: an FT-Raman spectroscopic study of mammoth and elephant ivory.  

PubMed

Raman spectra of mammoth ivory specimens have been recorded using near-infrared excitation, and comparisons made with modern Asian and African elephant ivories. Whereas the most ancient mammoth ivory (60-65 ky) showed no evidence for an organic collagen component, more recent samples of mammoth ivory indicated that some preservation had occurred, although with biodeterioration of the protein structure exhibited by the amide I and III bands in the 1200-1700 cm(-1) region of the Raman spectrum. The consequent difficulties encountered when applying chemometrics methods to ancient ivory analysis (which are successful for modern specimens) are noted. In the most ancient mammoth ivory specimens, which are extensively fragmented, evidence of mineralization is seen, with the production of gypsum, calcite and limonite; Raman microscopic analysis of crystalline material inside the fissures of the mammoth ivory shows the presence of gypsum as well as cyanobacterial colonisation. The application of Raman spectroscopy to the nondestructive analysis of archaeological materials in order to gain information of relevance to their preservation or restoration is highlighted. PMID:16132152

Edwards, Howell G M; Jorge Villar, Susana E; Nik Hassan, Nik F; Arya, Nlin; O'Connor, Sonia; Charlton, Donna M

2005-10-01

108

Evaluation of the Undersea Habitats--Tektite II, Hydro-Lab, and Edalhab--for Scientific Saturation Diving Programs.  

National Technical Information Service (NTIS)

The assessment of three undersea habitats--Tektite, Hydro-Lab and Edalhab--is based primarily upon the experience of the authors during a total of 62 man-days under saturation diving conditions while conducting biological research programs. A number of de...

W. L. High I. E. Ellis W. W. Schroeder G. Loverich

1973-01-01

109

Petrographic and petrological studies of lunar rocks. [Apollo 15 breccias and Russian tektites  

NASA Technical Reports Server (NTRS)

Clasts, rind glass, matrix glass, and matrix minerals from five Apollo 15 glass-coated breccias (15255, 15286, 15465, 15466, and 15505) were studied optically and with the SEM/microprobe. Rind glass compositions differ from sample to sample, but are identical, or nearly so, to the local soil, suggesting their origin by fusion of that soil. Most breccia samples contain green or colorless glass spheres identical to the Apollo 15 green glasses. These glasses, along with other glass shards and fragments, indicate a large soil component is present in the breccias. Clast populations include basalts and gabbros containing phases highly enriched in iron, indicative of extreme differentiation or fractional crystallization. Impact melts, anorthosites, and minor amounts of ANT suite material are also present among the clasts. Tektite glasses, impact melts, and breccias from the Zhamanshin structure, USSR, were also studied. Basic tektite glasses were found to be identical in composition to impact melts from the structure, but no satisfactory parent material has been identified in the limited suite of samples available.

Winzer, S. R.

1978-01-01

110

Trace-element composition of Chicxulub crater melt rock, K/T tektites and Yucatan basement  

NASA Technical Reports Server (NTRS)

The Cretaceous/Tertiary (K/T) boundary Chicxulub impact is the best preserved large impact in the geologic record. The Chicxulub crater has been buried with no apparent erosion of its intracrater deposits, and its ejecta blanket is known and is well preserved at hundreds of localities globally. Although most of the molten material ejected from the crater has been largely altered, a few localities still preserve tektite glass. Availability of intra- and extracrater impact products as well as plausible matches to the targeted rocks allows the comparison of compositions of the different classes of impact products to those of the impacted lithologies. Determination of trace-element compositions of the K/T tektites, Chicxulub melt rock, and the targeted Yucatan silicate basement and carbonate/evaporite lithologies have been made using instrumental neutron activation analysis (INAA) and inductively coupled plasma mass spectrometry (ICP-MS). Some sample splits were studied with both techniques to ensure that inter-laboratory variation was not significant or could be corrected. The concentration of a few major and minor elements was also checked against microprobe results. Radiochemical neutron activation analysis (RNAA) was used to determine Ir abundances in some samples.

Hildebrand, A. R.; Gregoire, D. C.; Attrep, M., Jr.; Claeys, P.; Thompson, C. M.; Boynton, W. V.

1993-01-01

111

Using DNA to track the origin of the largest ivory seizure since the 1989 trade ban.  

PubMed

The illegal ivory trade recently intensified to the highest levels ever reported. Policing this trafficking has been hampered by the inability to reliably determine geographic origin of contraband ivory. Ivory can be smuggled across multiple international borders and along numerous trade routes, making poaching hotspots and potential trade routes difficult to identify. This fluidity also makes it difficult to refute a country's denial of poaching problems. We extend an innovative DNA assignment method to determine the geographic origin(s) of large elephant ivory seizures. A Voronoi tessellation method is used that utilizes genetic similarities across tusks to simultaneously infer the origin of multiple samples that could have one or more common origin(s). We show that this joint analysis performs better than sample-by-sample methods in assigning sample clusters of known origin. The joint method is then used to infer the geographic origin of the largest ivory seizure since the 1989 ivory trade ban. Wildlife authorities initially suspected that this ivory came from multiple locations across forest and savanna Africa. However, we show that the ivory was entirely from savanna elephants, most probably originating from a narrow east-to-west band of southern Africa, centered on Zambia. These findings enabled law enforcement to focus their investigation to a smaller area and fewer trade routes and led to changes within the Zambian government to improve antipoaching efforts. Such outcomes demonstrate the potential of genetic analyses to help combat the expanding wildlife trade by identifying origin(s) of large seizures of contraband ivory. Broader applications to wildlife trade are discussed. PMID:17360505

Wasser, Samuel K; Mailand, Celia; Booth, Rebecca; Mutayoba, Benezeth; Kisamo, Emily; Clark, Bill; Stephens, Matthew

2007-03-01

112

Accretionary lapilli, tektites, or concretions: the ubiquitous spherules of Meridiani Planum  

NASA Astrophysics Data System (ADS)

One of the most enigmatic discoveries made by the NASA Mars Exploration Rover Opportunity (MER-B) at the Meridiani Planum landing site are the ubiquitous spherules referred to as "blueberries" by the science team. They cover the entire landing area and can be seen in every direction within view of the rover cameras. Subsequent analysis of a small grouping of the spherules laying on top of a rock outcrop by Mossbauer spectroscopy showed an intense hematite signature not found on the rock or in the surrounding basaltic soils. Spherules were also found attached to and embedded within sedimentary sulfate rock outcrops found at the landing area that have been determined by the MER science team as having been formed in an acidic liquid water environment. The appearance of most of the Meridiani spherules is strikingly similar to the morphology and size of terrestrial accretionary lapilli and show similarities to terrestrial tektites. Accretionary lapilli are spherical balls and fragments with a concentric layered structure that are formed by a variety of mechanisms including hydrovolcanic eruptions, geysers and large meteorite impacts in water. Tektites are glassy impact spherules that form as a result of large meteorite impacts and also seem apparent in some of the rover images. Tektites can be perfectly spherical or have teardrop and dumbbell shapes. A lack of a visible volcanic source capable of producing high volumes of accretionary lapilli as seen in the MER-B images, in combination with the strong spectral signature of hematite, that some of the spherules display, led the MER science team to favor a concretion hypothesis thus far. All of these types of spherules involve interaction of with surface water or ice to form. Problems exist in explaining how the Martian "concretions", if that is indeed what they are, are of such uniform size and have such a wide distribution. Evidence from Martian orbit and on the surface indicate that the Meridiani Planum landing ellipse is located within an ancient 800 km diameter impact structure with another 140 km crater under the site. Estimated hydrothermal output from this size of an impact would be equivalent to 38 times Yellowstone over a 15,000 year time period. Life as we understand it is dependent on a source of liquid water, energy, and nutrients. Hydrothermal energy can originate from either internal volcanic sources or through the action of large bolide impact. A 25 km diameter fluidized ejecta (rampart) crater named Victoria is located 50 km to the southwest of the Opportunity rover landing site and might explain how the Meridiani Planum region is covered with such an enormous abundance of spherules.

DiGregorio, Barry E.

2004-11-01

113

The diffraction grating in the Ivory optomechanical modeling tools  

NASA Astrophysics Data System (ADS)

In imaging spectrometers it is important that both the image of the far-field object and the image of the slit be stable on the detector plane. Lenses and mirrors contribute to the motions of these images but motions of the diffraction grating also have their own influences on these image motions. This paper develops the vector equations for the images (spectra) of the diffraction grating and derives their optomechanical influence coefficients from them. The Ivory Optomechanical Modeling Tools integrates the diffraction grating into the larger optical imaging system and formats the whole system's influence coefficients suitably for both spreadsheet and finite element analysis methods. Their application is illustrated in an example of a spectrometer exposed to both static and dynamic disturbances.

Hatheway, Alson E.

2013-09-01

114

[Sezary's syndrome. 4 cases observed at the University Hospital Center of Treichville (Abidjan, Ivory Coast)].  

PubMed

Authors report four cases of Sezary's syndrome over a period of eight years. The frequency is 1.2 for one hundred thousand consultations registered and 1.4 for one thousand patients. Three about 4 cases are younger than literature reports. On a clinical point of view we have noted no particular point. PMID:1666169

Toutoukpo, Y; Kone, M; Tea, D; Abissey, A

1991-01-01

115

[Detection of anti-Lassa antibodies in the Western Forest area of the Ivory Coast].  

PubMed

Lassa fever is an African viral hemorrhagic fever (VHF) known to be endemic in a number of West African countries including Nigeria, Sierra Leone, Liberia and Guinea. Despite having common borders with Liberia and Guinea, Côte d'Ivoire has never reported any cases of Lassa fever. In March 2000, as part of a research project on VHF--mainly yellow fever, Lassa fever and Ebola fever--in Guinea and Cote d'Ivoire, an exploratory survey was conducted to assess knowledge about VHF and immunological status against Lassa virus among forest workers in the Duekoue and Guiglo regions. One hundred and sixty-three male forest workers were interviewed using a questionnaire designed to assess risk factors for VHF exposure and personal medical history over the last 12 months. Detection of IgG antibodies against Lassa virus was performed by immunofluorescence assay with Lassa virus antigens from the Josiah and Las/AV strains. The overall prevalence of IgG antibodies was 26% (42/161). Among the Lassa IgG positive subjects, 38.5% were loggers including 20% that were positive at a serum dilution of 1/40 and 46.7% were national park workers or forest rangers including 69% that were positive at a dilution of 1/40 and more. Forty-one percent of subjects had heard of VHF including 14% who attributed it to animals and 2% who attributed it to plants. Contact with rodents was frequent and more than 50% of subjects had either eaten or skinned rodents. Although the prevalence of anti-Lassa IgG antibodies seemed high in the study population, no conclusion can be about level of exposure to Lassa virus. PMID:17201291

Akoua-Koffi, C; Ter Meulen, J; Legros, D; Akran, V; Aïdara, M; Nahounou, N; Dogbo, P; Ehouman, A

2006-10-01

116

An Administrative History of Out-of-School Educational Television in the Ivory Coast.  

National Technical Information Service (NTIS)

The study examines the basic organization, management, and evolution of the department producing the TPT broadcasts (TV for Everyone). The initial chapter describes the methodology of this study, and mentions give similar studies which might interest the ...

S. Grant

1977-01-01

117

Preliminary study to a demonstration building climatic design program in the Ivory Coast.  

National Technical Information Service (NTIS)

The two main objectives of this study are: the development of recommendations concerning the thermal design of inexpensive-type residential building in tropical climates (wet and dry), based on simulation results; the experimental study and the thermal op...

A. Grelat

1987-01-01

118

57FE Mössbauer spectroscopy studies of Tektites from Khon Kaen, Ne Thailand  

NASA Astrophysics Data System (ADS)

Room temperature 57Fe Mössbauer effect spectroscopy has been used to investigate the local Fe environment in a set of indochinite tektites from Thailand. A MIMOS II spectrometer in backscattering geometry has been used in the study, so that no sample preparation at all was required. The spectra have been analysed in terms of discrete spectral components using Voigt functions. The results are similar to those obtained with analysis done with quadrupole splitting distributions. In all cases the Mössbauer spectra show a broadened asymmetric quadrupole split doublet. The Fe 2+ sites have been distinguished in Fe with octahedral and tetrahedral coordination. The Fe3+ /Fe2+ and Fe2+ tetrahedral/octahedral ratios have been determined from the relative areas of the various spectral components. Their values have been discussed in the light of actual literature.

Costa, B. F. O.; Klingelhöfer, G.; Alves, E. I.

2014-01-01

119

Science education in rural America: Adaptations for the ivory tower  

NASA Astrophysics Data System (ADS)

This thesis illustrated what can happen when academic culture disconnects from the cultures surrounding it. It showed that formal school environments are not always the best places to learn. A discussion of the debate between coherence and fragmentation learning theories illustrated academic chasms and a mindset that science education must originate from within ivory towers to be valued. Rationales for place-based science education were developed. Two National Science Foundation initiatives were compared and contrasted for relevance to Native Science education (a) Informal Science Education and (b) Science Education for New Civic Engagement and Responsibilities. A National Science Foundation instrument, known as the Self-Assessment of Learning Gains, was selected to field-test measures of learning science outside of university science courses. Principles of chemistry were taught in community workshops, and those participant self-assessments were compared to self-assessments of students in introductory chemistry courses at two universities. University students consistently claimed the greatest learning gains, in the post-course survey, for the same areas that they claimed to have the greatest understanding, in the pre-course survey. The workshop participant responses differed, depending upon location of the learning environment. When held in a university laboratory, ideas were not related to other cultures, even when a Native Elder was present to describe those relationships. When held in a cultural center, those relationships were among the highest learning gains claimed. One of the instrument's greatest assets was the ability to measure reactions, level 4 of Bennett's (1976) hierarchy of evidence for program evaluation. A long-term commitment to informal science education (not short-term exhibits or programs), combined with negotiated place-based education was recommended as a crucially needed initiative, if relationships between universities and Native American communities are to improve. Some chasms created within ivory towers may never be bridged. Yet, those ideological chasms do not have to exist everywhere. The realities of working in the natural world and the practice of addressing multitudes of community challenges can alter perspectives, when horizons change from the edge of one's desk to those that meet the sea or sky.

van Doren, Gregory S.

120

Obsidians and tektites: Natural analogues for water diffusion in nuclear waste glasses  

SciTech Connect

Projected scenarios for the proposed Yucca Mountain repository include significant periods of time when high relative humidity atmospheres will be present, thus the reaction processes of interest will include those known to occur under these conditions. The ideal natural analog for the proposed Yucca Mountain repository would consist of natural borosilicate glasses exposed to expected repository conditions for thousands of years; however, the prospects for identifying such an analog are remote, but an important caveat for using natural analog studies is to relate the reaction processes in the analog to those in the system of interest, rather than a strict comparison of the glass compositions. In lieu of this, identifying natural glasses that have reacted via reaction processes expected in the repository is the most attractive option. The goal of this study is to quantify molecular water diffusion in the natural analogs obsidian and tektites. Results from this study can be used in assessing the importance of factors affecting molecular water diffusion in nuclear waste glasses, relative to other identified reaction processes. In this way, a better understanding of the long-term reaction mechanism can be developed and incorporated into performance assessment models. 17 refs., 4 figs.

Mazer, J.J.; Bates, J.K.; Bradley, C.R. [Argonne National Lab., IL (United States); Stevenson, C.M. [Archaeological Services Consultants, Inc., Columbus, OH (United States)

1991-11-01

121

Chemical composition of North American microtektites and tektite fragments from Barbados and DSDP site 612 on the continental slope off New Jersey  

NASA Astrophysics Data System (ADS)

The major element and trace element content of tektite fragments and microtektites found in deep-sea sediments from Barbados and DSDP (Deep Sea Drilling Project) Site 612 on the continental slope off New Jersey have been determined. The compositions are consistent with the conclusion that the samples from both occurrences belong to the North American tektite strewn field. However, the chemistry of the samples from both occurrences is not identical with the bediasite or georgianite chemistry. These differences show that there are geographical variations in composition in the North American strewn field.

Koeberl, C.; Glass, B. P.

1988-02-01

122

An international and multidisciplinary drilling project into a young complex impact structure: The 2004 ICDP Bosumtwi Crater Drilling Project---An overview  

Microsoft Academic Search

The Bosumtwi impact crater in Ghana, arguably the best-preserved complex young impact structure known on Earth, displays a pronounced rim and is almost completely filled by Lake Bosumtwi, a hydrologically closed basin. It is the source crater of the Ivory Coast tektites. The structure was excavated in 2.1-2.2 Gyr old metasediments and metavolcanics of the Birimian Supergroup. A drilling project

Christian Koeberl; Bernd Milkereit; Jonathan T. Overpeck; Christopher A. Scholz; Philip Y. O. Amoako; Daniel Boamah; Sylvester Danuor; Tobias Karp; Jochem Kueck; Robert E. Hecky; John W. King; John A. Peck

2007-01-01

123

Of Ivory and Smurfs: Loxodontan MapReduce Experiments for Web Search.  

National Technical Information Service (NTIS)

This paper describes Ivory, an attempt to build a distributed retrieval system around the open-source Hadoop implementation of MapReduce. We focus on three noteworthy aspects of our work: a retrieval architecture built directly on the Hadoop Distributed F...

D. Metzler J. Lin L. Wang T. Elsayed

2009-01-01

124

Unusual appearance of Schreger-like pattern in Hippopotamus amphibius ivory: wildlife forensics investigation of a netsuke.  

PubMed

The National Fish and Wildlife Forensics Laboratory routinely receives confiscated wildlife parts and products (including ivory) for identification purposes as part of wildlife law enforcement casework. Identification of evidentiary ivory typically involves a detailed and comprehensive visual and microscopic examination of the objects, as well as observation with ultraviolet light. Of thousands of ivory objects examined at the Lab, the author has observed unusual non-Proboscidean (elephant) objects with Schreger-like (cross-hatched) pattern. One of these objects was a small well-polished netsuke carved from a hippopotamus canine. PMID:20451339

Sims, Margaret E

2010-07-15

125

Sandy Coasts  

NSDL National Science Digital Library

Waves play a major role in breaking down and building up coastline features. But other factors, including tides, currents, and sediment type, also determine how erosional and depositional processes shape coastlines. This interactive feature introduces viewers to the landforms and features associated with sandy coasts. Typically located on passive margins in areas characterized by low wave energy, a wide continental shelf, and high offshore sediment influence, they develop depositional features such as extensive beaches and dunes, barrier islands, and sand spits.

2011-02-17

126

Coast Guard  

SciTech Connect

This paper reports that about 16,000 oil spills involving the release of more than 46 million gallons of oil took place in U.S. navigable waters in 1988; spills at water-front facilities, where vessels load and unload oil, accounted for about half of the oil spilled. While the Coast Guard acknowledges its responsibility for regulating and inspecting waterfront facilities, it efforts in this area have fallen short because it has not been inspecting portions of intrafacility pipes that transport oil between docks and storage tanks. Water pollution and noncompliance with federal oil pollution prevention regulations continue to be high at waterfront facilities. Yet the Coast Guard cannot determine how effective its inspection program has been in reducing the risk of oil spills because information on program results, such as the types, severity, and frequency of deficiencies found by inspectors, is not compiled an linked with information on the causes of oil spills found by investigators. Until the Coast Guard collects this type of information, it will not be in a position to establish measurable goals.

Not Available

1991-06-01

127

Combating the illegal trade in African elephant ivory with DNA forensics.  

PubMed

International wildlife crime is burgeoning in this climate of global trade. We contend that the most effective way to contain this illegal trade is to determine where the wildlife is being removed. This allows authorities to direct law enforcement to poaching hot spots, potentially stops trade before the wildlife is actually killed, prevents countries from denying their poaching problems at home, and thwarts trade before it enters into an increasingly complex web of international criminal activity. Forensic tools have been limited in their ability to determine product origin because the information they can provide typically begins only at the point of shipment. DNA assignment analyses can determine product origin, but its use has been limited by the inability to assign samples to locations where reference samples do not exist. We applied new DNA assignment methods that can determine the geographic origin(s) of wildlife products from anywhere within its range. We used these methods to examine the geographic origin(s) of 2 strings of seizures involving large volumes of elephant ivory, 1 string seized in Singapore and Malawi and the other in Hong Kong and Cameroon. These ivory traffickers may comprise 2 of the largest poaching rings in Africa. In both cases all ivory seized in the string had common origins, which indicates that crime syndicates are targeting specific populations for intense exploitation. This result contradicts the dominant belief that dealers are using a decentralized plan of procuring ivory stocks as they became available across Africa. Large quantities of ivory were then moved, in multiple shipments, through an intermediate country prior to shipment to Asia, as a risk-reduction strategy that distances the dealer from the poaching locale. These smuggling strategies could not have been detected by forensic information, which typically begins only at the shipping source. PMID:18786100

Wasser, Samuel K; Joseph Clark, William; Drori, Ofir; Stephen Kisamo, Emily; Mailand, Celia; Mutayoba, Benezeth; Stephens, Matthew

2008-08-01

128

Neodymium and strontium isotopic study of Australasian tektites - New constraints on the provenance and age of target materials  

NASA Technical Reports Server (NTRS)

The Nd and Sr isotopic compositions of Australasian tectites (including two flanged Australian tectites, two low-SiO2 Muong Nong-type tectites, and three high-SiO2 Muong Nong-type tectites) and the Nd, Sm, Sr, and Rb concentrations were investigated by isotope-dilution thermal ionization mass spectrometry, and the Sm-Nd and Rb-Sr isotope systematics were used to study the characteristics of the parental material. It is shown that the Nd and Sr isotopic data provide evidence that all Australasian tektites were derived from a single sedimentary formation with a narrow range of stratigraphic ages close to 170 Ma. It is suggested that all of the Australasian tektites were derived from a single impact event and that the australites represent the upper part of a melt sheet ejected at high velocity, whereas the indochinites represent melts formed at a lower level in the target material distributed closer to the area of the impact.

Blum, Joel D.; Papanastassiou, D. A.; Wasserburg, G. J.; Koeberl, C.

1992-01-01

129

Whales, Walruses, and Elephants: Artisans in Ivory, Baleen, and Other Skeletal Materials in Seventeenth and Eighteenth-Century Amsterdam  

Microsoft Academic Search

Hard animal tissues obtained from whales, walruses, and elephants are baleen, whale bone, walrus ivory, walrus baculum, and\\u000a elephant ivory. Objects of these materials were manufactured by artisans in Amsterdam in the seventeenth and eighteenth centuries.\\u000a New archaeological and historical evidence show the import and importance if these materials. The importance of baleen is\\u000a evident from historical sources. Whale bone

Marloes Rijkelijkhuizen

2009-01-01

130

The identification of elephant ivory evidences of illegal trade with mitochondrial cytochrome b gene and hypervariable D-loop region.  

PubMed

DNA analysis of elephant ivory of illegal trade was handled in this work. The speciation and geographical origin of nine specimens of elephant ivory were requested by the police. Without national authorization, the suspect had purchased processed ivory seals from January to May, 2011 by Internet transactions from a site in a neighboring country. The DNA of decalcified ivory evidences was isolated with QIAGEN Micro Kit. The total 844-904 base pair sized sequences of mitochondrial cytochrome b and D-loop region could be acquired using direct sequencing analysis. They were compared with the sequences registered in GenBank. It was confirmed that most specimens were likely from African forest elephants (Loxodonta cyclotis), one from African savanna elephant (Loxodonta africana) and one from Asian elephant (Elephas maximus). Analysis of the mitochondrial hypervariable D-loop region sequence of elephants verified that one African savanna elephant might be from South Africa and one Asian elephant from Laos. Cytochrome b and D-loop region located in the mitochondrial DNA resulted in the successful determination of elephant DNA from nine processed ivory specimens. PMID:23472798

Lee, Eun-jung; Lee, Yang-han; Moon, Seo-hyun; Kim, Nam-ye; Kim, Soon-hee; Yang, Moon-sik; Choi, Dong-ho; Han, Myun-soo

2013-04-01

131

[An uncommon localization of pyoderma gangrenosum on the penis of an HIV infected patient in the Ivory Coast].  

PubMed

Pyoderma gangrenosum is an uncommon chronic ulcerative dermatosis with unknown aetiology and with a pathology which is still obscure. In 15-45% of cases, it is related to intestinal chronic inflammatory disease (MICI), to a systemic disease that it can sometimes reveals or to an immunodeficiency This disease starts whether with a pustule, a bubble or a nodule which leads during its evolvement to a superficial ulceration with clear edges. Its diagnosis is easy and is mainly clinical. It is a disease which is localized preferably in lower limbs. Treatment is mainly based on oral route corticotherapy. We report a case of gangrenosum pyoderma localized on the penis in a 43-year-old HIV infected patient. It is an uncommon localization, misleading and delicate. We have treated successfully this patient by oral corticotherapy combined with local antiseptic treatments for 6 months. PMID:19583026

Ecra, E; Ahogo, K C; Sangaré, A; Kaloga, M; Kassi, K; Kouamé, K; Kacou, D E; Gbery, I P; Yoboué, Y P; Kanga, J M

2009-05-01

132

Early treatment failure during treatment of Plasmodium falciparum malaria with atovaquone-proguanil in the Republic of Ivory Coast.  

PubMed

The increased spread of drug-resistant malaria highlights the need for alternative drugs for treatment and chemoprophylaxis. The combination of atovaquone-proguanil (Malarone®) has shown high efficacy against Plasmodium falciparum with only mild side-effects. Treatment failures have been attributed to suboptimal dosages or to parasite resistance resulting from a point mutation in the cytochrome b gene. In this paper, a case of early treatment failure was reported in a patient treated with atovaquone-proguanil; this failure was not associated with a mutation in the parasite cytochrome b gene, with impaired drug bioavailability, or with re-infection. PMID:22551095

Wurtz, Nathalie; Pascual, Aurélie; Marin-Jauffre, Adeline; Bouchiba, Housem; Benoit, Nicolas; Desbordes, Marc; Martelloni, Maryse; Pommier de Santi, Vincent; Richa, Georges; Taudon, Nicolas; Pradines, Bruno; Briolant, Sébastien

2012-01-01

133

[Clinical aspects of ocular onchocerciasis in Ivory Coast nine years after the interruption of the vectorial transmission (author's transl)].  

PubMed

Report of 262 ocular controls in Ivorian adults nine years after they left their respective villages in hyperendemic onchocerciasic areas which were flooded consequently to the building up of the Kossou dam. After that period 50 p. 100 of the controlled persons have still a positive skin biopsy. On the other hand, parasitism by Onchocerca volvulus microfilariae and lesions of keratitis punctata have nearly disappeared (respectively 1 and 2 cases). Patients with microfilariae in the anterior ocular camera are very rare (3,4 p. 100) though many patients show definitive changes of the anterior and posterior ocular segments. Such kind of surveys are necessary to have a good evaluation of the regressive evolution of ocular schistosomiasis after the interruption of the vectorial transmission. PMID:6275236

Rolland, A

1981-01-01

134

[Prevalence of HBs antigen carriage in a population of national Gendarmerie recruits in Ivory Coast in 2008].  

PubMed

The purpose of this study was to determine the prevalence of HBsAg carriage in Ivorian gendarmerie recruits in 2008. This prevalence was 15.6%. It was highest in recruits aged 18 years (24%), in those who were married (33.3%) and in those who had had more than three sexual partners in the 6 months before the survey (19.4%). It was also higher in recruits who had never used condoms (20.6%) and in those who had undergone blood transfusions (27%). A policy of vaccination against HBV in the army, in teenagers and adults must be implemented to reduce HBsAg carriage in the army and in the Ivorian population. PMID:23281537

Kra, O; N'dri, N; Ouattara, B; Kadjo, K; Aba, T; Bissagnéné, E

2012-01-01

135

Early treatment failure during treatment of Plasmodium falciparum malaria with atovaquone-proguanil in the Republic of Ivory Coast  

PubMed Central

The increased spread of drug-resistant malaria highlights the need for alternative drugs for treatment and chemoprophylaxis. The combination of atovaquone?proguanil (Malarone®) has shown high efficacy against Plasmodium falciparum with only mild side-effects. Treatment failures have been attributed to suboptimal dosages or to parasite resistance resulting from a point mutation in the cytochrome b gene. In this paper, a case of early treatment failure was reported in a patient treated with atovaquone-proguanil; this failure was not associated with a mutation in the parasite cytochrome b gene, with impaired drug bioavailability, or with re-infection.

2012-01-01

136

Establishing the link between the Chesapeake Bay impact structure and the North American tektite strewn field: The Sr-Nd isotopic evidence  

NASA Astrophysics Data System (ADS)

The Chesapeake Bay impact structure, which is about 35 Ma old, has previously been proposed as the possible source crater of the North American tektites (NAT). Here we report major and trace element data as well as the first Sr-Nd isotope data for drill core and outcrop samples of target lithologies, crater fill breccias, and post-impact sediments of the Chesapeake Bay impact structure. The unconsolidated sediments, Cretaceous to middle Eocene in age, have ?Srt = 35.7 Ma of +54 to +272, and ?Ndt = 35.7 Ma ranging from -6.5 to -10.8; one sample from the granitic basement with a TNdCHUR model age of 1.36 Ga yielded an ?Srt = 35.7 Ma of +188 and an ?Ndt = 35.7 Ma of -5.7. The Exmore breccia (crater fill) can be explained as a mix of the measured target sediments and the granite, plus an as-yet undetermined component. The post-impact sediments of the Chickahominy formation have slightly higher TNdCHUR model ages of about 1.55 Ga, indicating a contribution of some older materials. Newly analyzed bediasites have the following isotope parameters: +104 to +119 (?Srt = 35.7 Ma), -5.7 (?Ndt = 35.7 Ma), 0.47 Ga (TSrUR), and 1.15 Ga (TNdCHUR), which is in excellent agreement with previously published data for samples of the NAT strewn field. Target rocks with highly radiogenic Sr isotopic composition, as required for explaining the isotopic characteristics of Deep Sea Drilling Project (DSDP) site 612 tektites, were not among the analyzed sample suite. Based on the new isotope data, we exclude any relation between the NA tektites and the Popigai impact crater, although they have identical ages within 2? errors. The Chesapeake Bay structure, however, is now clearly constrained as the source crater for the North American tektites, although the present data set obviously does not include all target lithologies that have contributed to the composition of the tektites.

Deutsch, Alexander; Koeberl, Christian

2006-05-01

137

Intrinsic oxygen fugacity measurements on seven chondrites, a pallasite, and a tektite and the redox state of meteorite parent bodies  

USGS Publications Warehouse

Intrinsic oxygen-fugacity (fO2) measurements were made on five ordinary chondrites, a carbonaceous chondrite, an enstatite chondrite, a pallasite, and a tektite. Results are of the form of linear log fO2 - 1 T plots. Except for the enstatite chondrite, measured results agree well with calculated estimates by others. The tektite produced fO2 values well below the range measured for terrestrial and lunar rocks. The lowpressure atmospheric regime that is reported to follow large terrestrial explosions, coupled with a very high temperature, could produce glass with fO2 in the range measured. The meteorite Salta (pallasite) has low fO2 and lies close to Hvittis (E6). Unlike the other samples, results for Salta do not parallel the iron-wu??stite buffer, but are close to the fayalite-quartz-iron buffer in slope. Minor reduction by graphite appears to have taken place during metamorphism of ordinary chondrites. fO2 values of unequilibrated chondrites show large scatter during early heating suggesting that the constituent phases were exposed to a range of fO2 conditions. The samples equilibrated with respect to fO2 in relatively short time on heating. Equilibration with respect to fO2 in ordinary chondrites takes place between grades 3 and 4 of metamorphism. Application of P - T - fO2 relations in the system C-CO-CO2 indicates that the ordinary chondrites were metamorphosed at pressures of 3-20 bars, as it appears that they lay on the graphite surface. A steep positive thermal gradient in a meteorite parent body lying at the graphite surface will produce thin reduced exterior, an oxidized near-surface layer, and an interior that is increasingly reduced with depth; a shallow thermal gradient will produce the reverse. A body heated by accretion on the outside will have a reduced exterior and oxidized interior. Meteorites from the same parent body clearly are not required to have similar redox states. ?? 1984.

Brett, R.; Sato, M.

1984-01-01

138

Rivers and Coasts  

NSDL National Science Digital Library

This site provides information about rivers, coasts, and the processes affecting them. Students can view an animation of the water cycle, read about how rivers and coasts change, learn about estuaries, and view information on how rivers, coasts, and other water features influence people's lives. Glossaries and a teacher's page offering lesson plans, worksheets, and links to additional sites are also provided.

139

Assigning African elephant DNA to geographic region of origin: Applications to the ivory trade  

PubMed Central

Resurgence of illicit trade in African elephant ivory is placing the elephant at renewed risk. Regulation of this trade could be vastly improved by the ability to verify the geographic origin of tusks. We address this need by developing a combined genetic and statistical method to determine the origin of poached ivory. Our statistical approach exploits a smoothing method to estimate geographic-specific allele frequencies over the entire African elephants' range for 16 microsatellite loci, using 315 tissue and 84 scat samples from forest (Loxodonta africana cyclotis) and savannah (Loxodonta africana africana) elephants at 28 locations. These geographic-specific allele frequency estimates are used to infer the geographic origin of DNA samples, such as could be obtained from tusks of unknown origin. We demonstrate that our method alleviates several problems associated with standard assignment methods in this context, and the absolute accuracy of our method is high. Continent-wide, 50% of samples were located within 500 km, and 80% within 932 km of their actual place of origin. Accuracy varied by region (median accuracies: West Africa, 135 km; Central Savannah, 286 km; Central Forest, 411 km; South, 535 km; and East, 697 km). In some cases, allele frequencies vary considerably over small geographic regions, making much finer discriminations possible and suggesting that resolution could be further improved by collection of samples from locations not represented in our study.

Wasser, Samuel K.; Shedlock, Andrew M.; Comstock, Kenine; Ostrander, Elaine A.; Mutayoba, Benezeth; Stephens, Matthew

2004-01-01

140

Ivories, Inscriptions, and Episcopal Self-Consciousness in the Ottonian Empire: Berthold of Toul and the Berlin Hodegetria  

Microsoft Academic Search

This study advances two central claims based on a detailed investigation of the Byzantine ivory plaque depicting the Hodegetria now in the Museum für Spätantike und Byzantinische Kunst in Berlin (inv. no. 2394), which bears an elegant Latin poetic inscription carved upon its frame. First, it argues on the basis of historical, artistic, and epigraphic evidence that the hitherto unknown

William North; Anthony Cutler

2003-01-01

141

Eggshell thinning and decreased concentrations of vitamin E are associated with contaminants in eggs of ivory gulls.  

PubMed

The ivory gull is a high Arctic seabird species threatened by climate change and contaminant exposure. High levels of contaminants have been reported in ivory gull Pagophila eburnea eggs from Svalbard and the Russian Arctic. The present study investigated associations between high levels of contaminants (organochlorinated pesticides (OCPs), polychlorinated biphenyls (PCBs), brominated flame retardants (BFRs), perfluorinated alkyl substances (PFASs) and mercury (Hg)) and three response variables: eggshell thickness, retinol (vitamin A) and ?-tocopherol (vitamin E). Negative associations were found between levels of OCPs, PCBs and BFRs and eggshell thickness (p<0.021) and ?-tocopherol (p<0.023), but not with retinol (p>0.1). There were no associations between PFASs and mercury and the three response variables. Furthermore, the eggshell thickness was 7-17% thinner in the present study than in archived ivory gull eggs (?1930). In general, a thinning above 16 to 20% has been associated with a decline in bird populations, suggesting that contaminant-induced eggshell thinning may constitute a serious threat to ivory gull populations globally. PMID:22673175

Miljeteig, Cecilie; Gabrielsen, Geir Wing; Strøm, Hallvard; Gavrilo, Maria V; Lie, Elisabeth; Jenssen, Bjørn Munro

2012-08-01

142

Tektite-bearing, deep-water clastic unit at the Cretaceous-Tertiary boundary in northeastern Mexico  

SciTech Connect

The hypothesis of Cretaceous-Tertiary (K-T) boundary impact on Yucatan, Mexico, predicts that nearby sites should show evidence of proximal impact ejecta and disturbance by giant waves. An outcrop along the Arroyo el Mimbral in northeastern Mexico contains a layered clastic unit up to 3 m thick that interrupts a biostratigraphically complete pelagic-marl sequence deposited at more than 400 m water depth. The marls were found to be unsuitable for determining magnetostratigraphy, but foraminiferal biostratigraphy places the clastic unit precisely at the K-T boundary. The authors interpret this clastic unit as the deposit of a megawave or tsunami produced by an extraterrestrial impact. The clastic unit comprises three main subunits. (1) The basal 'spherule bed' contains glass in the form of tektites and microtektites, glass spherules replaced by chlorite-smectite and calcite, and quartz grains showing probable shock features. This bed is interpreted as a channelized deposit of proximal ejecta. (2) A set of lenticular, massive, graded 'laminated beds' contains intraclasts can abundant plant debris, and may the result of megawave backwash that carried coarse debris from shallow parts of the continental margin into deeper water. (3) At the top, several thin 'ripple beds' composed of fine sand are separated by clay drapes; they are interpreted as deposits of oscillating currents, perhaps a seiche. An iridium anomaly (921 {plus minus} 23 pg/g) is observed at the top of the ripple beds. Their observations at the Mimbral locality support the hypothesis of a K-T impact on nearby Yucatan.

Smit, J. (Free Univ., Amsterdam (Netherlands)); Montanari, A.; Swinburne, N.H.M.; Alvarez, W. (Univ. of California, Berkeley (United States)); Hildebrand, A.R. (Univ. of Arizona, Tucson (United States)); Margolis, S.V.; Claeys, P. (Univ. of California, Davis (United States)); Lowrie, W. (Eidgenoessische Technische Hochschule, Zuerich (Switzerland)); Asaro, F. (Lawrence Berkeley Lab., CA (United States))

1992-02-01

143

Coeval 40Ar/39Ar Ages of 65.0 Million Years Ago from Chicxulub Crater Melt Rock and Cretaceous-Tertiary Boundary Tektites.  

PubMed

(40)Ar/(39)Ar dating of drill core samples of a glassy melt rock recovered from beneath a massive impact breccia contained within the 180-kilometer subsurface Chicxulub crater in Yucatán, Mexico, has yielded well-behaved incremental heating spectra with a mean plateau age of 64.98 +/- 0.05 million years ago (Ma). The glassy melt rock of andesitic composition was obtained from core 9 (1390 to 1393 meters) in the Chicxulub 1 well. The age of the melt rock is virtually indistinguishable from (40)Ar/(39)Ar ages obtained on tektite glass from Beloc, Haiti, and Arroyo el Mimbral, northeastern Mexico, of 65.01 +/- 0.08 Ma (mean plateau age for Beloc) and 65.07 +/- 0.10 Ma (mean total fusion age for both sites). The (40)Ar/(39)Ar ages, in conjunction with geochemical and petrological similarities, strengthen the recent suggestion that the Chicxulub structure is the source for the Haitian and Mexican tektites and is a viable candidate for the Cretaceous-Tertiary boundary impact site. PMID:17789640

Swisher, C C; Grajales-Nishimura, J M; Montanari, A; Margolis, S V; Claeys, P; Alvarez, W; Renne, P; Cedillo-Pardoa, E; Maurrasse, F J; Curtis, G H; Smit, J; McWilliams, M O

1992-08-14

144

Coeval Ar-40/Ar-39 ages of 65.0 million years ago from Chicxulub crater melt rock and Cretaceous-Tertiary boundary tektites  

NASA Technical Reports Server (NTRS)

Ar-40/Ar-39 dating of drill-core samples of a glassy melt rock recovered from beneath a massive impact breccia contained with the 180-kilometer subsurface Chicxulub crater yields well-behaved incremental heating spectra with a mean plateau age of 64.98 +/- 0.05 million years ago (Ma). The glassy melt rock of andesitic composition was obtained from core 9 (1390 to 1393 meters) in the Chicxulub 1 well. The age of the melt rock is virtually indistinguishable from Ar-40/Ar-39 ages obtained on tektite glass from Beloc, Haiti, and Arroyo el Mimbral, northeastern Mexico, of 65.01 +/- 0.08 Ma (mean plateau age for Beloc) and 65.07 +/- 0.10 Ma (mean total fusion age for both sites). The Ar-40/Ar-39 ages, in conjunction with geochemical and petrological similarities, strengthen the suggestion that the Chicxulub structure is the source for the Haitian and Mexican tektites and is a viable candidate for the Cretaceous-Tertiary boundary impact site.

Swisher, Carl C., III; Grajales-Nishimura, Jose M.; Montanari, Alessandro; Margolis, Stanley V.; Claeys, Philippe; Alvarez, Walter; Renne, Paul; Cedillo-Pardo, Esteban; Maurrasse, Florentin J.-M. R.; Curtis, Garniss H.

1992-01-01

145

Ecology and epidemiology of Vibrio parahaemolyticus on the coast of Togo*  

PubMed Central

Following the identification of V. parahaemolyticus as an important agent of choleralike gastroenteritis in Togo, studies to establish the natural reservoirs of these bacteria were performed in 1972-73. Whereas V. parahaemolyticus was rarely found in water from the Atlantic ocean, the lagoons along the coast proved to be important reservoirs. The incidence of halophilic vibrios was correlated with the salinity of these waters, which is subjected to seasonal changes with the highest sodium chloride concentration at the end of the dry season. Examination of fish and shellfish samples confirmed these results: V. parahaemolyticus was isolated from only 0.5% of freshly caught fish from the Atlantic ocean but occurred in 47.3% of fish and shellfish samples from the lagoons. A still higher occurrence was encountered in specimens purchased in the markets, with 14.3% of sea fish samples and 67.7% of specimens originating from the lagoons being positive. Since lagoons and lakes with brackish water are typical of all the coastal areas between Nigeria and Ivory Coast it is likely that V. parahaemolyticus is a widespread pathogen on the coast of West Africa.

Bockemuhl, J.; Triemer, A.

1974-01-01

146

Phagocytosis and respiratory burst activity of haemocytes from the ivory snail, Babylonia areolata.  

PubMed

Haemocytes from the ivory snail, Babylonia areolata phagocytized Saccharomyces cerevisiae and Vibrio parahaemolyticus after 30 min. Haemocytes phagocytized V. parahaemolyticus at a greater rate than they phagocytized S. cerevisiae. The phagocytic rate (PP) of V. parahaemolyticus by granulocytes to was a little higher than that of S. cerevisiae. The phagocytic index (PI) of V. parahaemolyticus by granulocytes was significantly higher than that of S. cerevisiae. The same was true of hyalinocytes. The PP of granulocytes was significantly higher than that of hyalinocytes for each pathogen. No difference in PI was observed in granulocytes and hyalinocytes. Two defense mechanisms of B. areolata were quantified using flow cytometry. Haemocyte phagocytosis was quantified using fluorescent microbeads and respiratory burst activity was measured using H2O2 increases detected by 2', 7'-dichlorofluorescein diacetate. Both phagocytosis and respiratory burst activity of the haemocytes increased over time. After 90 min the phagocytic rate no longer increased. In the case of respiratory burst, the greatest increase in fluorescence occurred between 30 and 120 min, no further increase was seen after 120 min. These results showed unequivocally that a native (unstimulated) haemocyte oxidative burst was active in B. areolata. The aim of this study was to further the knowledge of immunology in gastropods. PMID:23664911

Di, Guilan; Zhang, Zhaoxia; Ke, Caihuan

2013-08-01

147

Mapping Potential Ivory Billed Woodpecker Habitat using Lidar and Hyperspectral Data Fusion  

NASA Astrophysics Data System (ADS)

Multisensor fusion is a powerful approach towards characterizing forest structure for effective management of wildlife habitats. The rediscovery of the Ivory Billed Woodpecker in 2005 reinforced the need to map and conserve suitable habitat for the previously thought extinct bird. In this study we fused waveform lidar and hyperspectral data to map potential habitat for the woodpecker along the Lower Mississippi Valley of Arkansas. Laser Vegetation Imaging Sensor (LVIS) data was processed to produce high-resolution forest structure maps. We used multiple endmember spectral mixture analysis (MESMA) to map stressed and dead vegetation from the Airborne Visible Infrared Imaging Spectrometer (AVIRIS) data. LVIS and AVIRIS maps were fused to identify habitat hot-spots based on historical records of habitat preferences of the bird. Results indicate several small hotspots in the bottomland hardwood forests, but very few large and continuous patches qualify as potential woodpecker habitat. Results from this study are expected to aid search efforts for the woodpecker and also provide useful insights into lidar fusion for large scale habitat mapping.

Swatantran, A.; Dubayah, R.; Hofton, M.; Blair, J. B.; Handley, L.

2008-12-01

148

The Skin Ivory Spot. A Possible Indicator for Skinfield Photo-Carcinogenesis in Recreational Sunbed Addicts  

PubMed Central

Introduction: For a decade or so, artificial sources of restricted light wavelengths, particularly sunbeds, have progressively gained popularity among adolescents and young adults. Warnings were raised focusing on the risk of accelerated photoaging and photocarcinogenesis. The ULEV (ultraviolet light-enhanced visualization) method is a convenient noninvasive way identifying subtle pigmentary changes presenting as a mottled subclinical melanoderma (MSM). Of note, rare spotty amelanotic macules presenting as skin ivory spots (SIS) was reported on any part of the body. Subjects and method: This work is the first attempt at evaluating the changes in the MSM and SIS spots developed on the skin of 33 phototype III young women designated as avid users involved in frequent exposures to sunshine and sunbeds for lifestyle purposes for a duration of at least 120 months. Results: MSM was markedly heterogeneous and was distinctly obvious in the majority of adepts of frequent natural and artificial photoexposures. SIS was particularly developed in subjects presenting with severe MSM patterns. Discussion: MSM and SIS are more severe in subjects frequently exposed to sunbeds and sun exposures. These signs possibly represent a risk marker for field photocarcinogenesis.

Quatresooz, Pascale; Pierard-Franchimont, Claudine; Pierard, Gerald E.

2012-01-01

149

Microirghizites recovered from a sediment sample from the Zhamanshin impact structure  

NASA Astrophysics Data System (ADS)

Microscopic glass spherules, called microirghizites, have been recovered from a stream deposit in the Zhamanshin crater. The microirghizites partly overlap the irghizites (tektites) and SiO2-rich zhamanshinites (impactites) in composition, but exhibit greater variations in composition and have lower average SiO2 contents. A similar relationship has been observed between microtektites and tektites in the Australasian, Ivory Coast, and North American strewn fields. The compositions and oxide trends observed for the microirghizites, SiO2-rich zhamanshinites and irghizites are rather similar to those observed for the Australasian microtektites and tektites. The major differences are the Al2O3 and FeO versus SiO2 trends, which could be explained by differences in amount of meteoritic contamination. The irghizites and microirghizites contain higher nickel contents (up to 0.41 percent) than the SiO2-rich zhamanshinites and Australasian tektites and microtektites. The major oxides versus silica trends for the microirghizites support a previous conclusion that the impacting body was a chondrite meteorite and the bulk parent material was terrestrial. Although the irghizites may have been more contaminated by the impacting body than were the SiO2-rich zhamanshinites, it is found that the major differences in composition between the irghizites and SiO2-rich zhamanshinites may be due to different parent materials rather than meteoritic contamination.

Glass, B. P.; Fredriksson, K.; Florenskii, P. V.

1983-11-01

150

South Oregon Coast Reinforcement.  

SciTech Connect

The Bonneville Power Administration is proposing to build a transmission line to reinforce electrical service to the southern coast of Oregon. This FYI outlines the proposal, tells how one can learn more, and how one can share ideas and opinions. The project will reinforce Oregon`s south coast area and provide the necessary transmission for Nucor Corporation to build a new steel mill in the Coos Bay/North Bend area. The proposed plant, which would use mostly recycled scrap metal, would produce rolled steel products. The plant would require a large amount of electrical power to run the furnace used in its steel-making process. In addition to the potential steel mill, electrical loads in the south Oregon coast area are expected to continue to grow.

United States. Bonneville Power Administration.

1998-05-01

151

West Coast Poverty Center  

NSDL National Science Digital Library

Based at the University of Washington, the West Coast Poverty Center "serves as a hub for research, education, and policy analysis leading to greater understanding of the causes and consequences of poverty and effective approaches to reducing it in the west coast states." The Center was created in the fall of 2005, and it represents a collaborative venture between the UW School of Social Work, the Daniel J. Evans School of Public Affairs, and the College of Arts and Sciences. Scholars and others will find the site quite useful, and they may wish to start at the "Poverty Basics" section. This area includes helpful overviews like "How Many People Are Poor in the United States?" and interactive maps and charts that document the state of poverty levels on the West Coast. Moving on, the "Research" area contains links to papers, research briefs, and information about upcoming events sponsored by the Center.

152

Coasts under pressure.  

PubMed

In most areas of the world, too many people live or play along the coast. Municipal and industrial wastes pollute coastal waters. Rivers spew erosion sediment and pollutants into these waters. Economic development is often the only management strategy for coastal zones, and economic development has little concern for resource degradation and watershed management. 53 countries have coastal management plans, but few have adequately implemented them. Almost 66% of the world's population lives within 150 km of the coast; by 2025, 75% will live as close to the coast. In the US, the coastal population has grown faster than that of the entire US, so that the population density is now almost 400 persons/sq m compared to 275 persons/sq m in 1960. Urbanization continues in the US coastal zones, where 7 of the 10 US largest cities exist. 94% of China's population lives in the eastern 3rd of the country. The population density along China's coast is more than 600/sq km. In Shanghai, it is more than 2000/sq km. Many people are moving from poorer provinces in the central and western regions to the economic free zones and special economic zones along the coast. At any moment, 30-60 million Chinese are moving. Most everyone in southeastern Asia, the Caribbean, and Latin America live in coastal areas. By 2025, the coastal zone between Rio de Janeiro and Sao Paulo will be all urbanized This is also occurring on Chile's coast between Valparaiso and Concepcion. The Mediterranean has the most overcrowded coastline in the developed world. Unchecked development could lead to continuous urban sprawl between Spain and Greece. Development pressures have caused a sizable decline in or a collapse of coastal fisheries. In Asia, all waters within 15 km of the coastline have been overfished. Coral reefs and mangrove forests are being destroyed with inadequate resources targeted for their protection. PMID:12287493

Hinrichsen, D

1994-01-01

153

Impact of Tributyltin and Triphenyltin on Ivory Shell (Babylonia japonica) Populations  

PubMed Central

We histopathologically examined gonads and chemically determined organotin compounds in tissues of the ivory shell, Babylonia japonica. Imposex (a superimposition of male-type genital organs on females) occurred in approximately 80–90% of B. japonica specimens that we examined, with the penis and vas deferens both well developed. No oviduct blockage by vas deferens formation was observed. Ovarian spermatogenesis and suppressed ovarian maturation were observed in the females that exhibited imposex, although no histopathological abnormalities were found in males. Tissue distributions of organotin compounds [tributyltin (TBT), triphenyltin (TPhT), and their metabolites] were different for butyltins and phenyltins; a remarkably high accumulation of TBT was observed in the ctenidium, osphradium, and heart, whereas high concentrations of TPhT were detected in the ovary and digestive gland. More than one-third of TBT accumulated in the digestive glands of both males and females, followed by the testis, ctenidium, muscle, and heart tissues in males and in the muscle, ovary, ctenidium, and head tissues (including the central nervous system ganglia) in females. In both males and females, more than half of total TPhT accumulated in the digestive glands, followed by the gonads. The next highest values were in the muscle, ctenidium, and heart tissues in males and in the muscle, oviduct, and head tissues in females. Both TBT and TPhT concentrations in the gonads were positively correlated with penis length in females. Our findings strongly suggest that reproductive failure in adult females accompanied by imposex, possibly induced by TBT and TPhT from antifouling paints, may have caused the marked decline of B. japonica populations in Japan.

Horiguchi, Toshihiro; Kojima, Mitsuhiro; Hamada, Fumihiko; Kajikawa, Akira; Shiraishi, Hiroaki; Morita, Masatoshi; Shimizu, Makoto

2006-01-01

154

Coast Guard Firefighting Module  

NASA Technical Reports Server (NTRS)

NASA and the U.S. Coast Guard are jointly developing a lightweight, helicopter-transportable, completely self-contained firefighting module for combating shipboard and dockside fires. The project draws upon NASA technology in high-capacity rocket engine pumps, lightweight materials and compact packaging.

1977-01-01

155

Greenland: Full West Coast  

NSDL National Science Digital Library

This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm-year) along the coast and increased slightly in the center (+2 cm-year). Researchers view this as yet another serious warning sign of the threat of global warming.

Perkins, Lori; Hall, Dorothy

2000-06-25

156

Greenland full west coast  

NSDL National Science Digital Library

This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm-year) along the coast and increased slightly in the center (+2 cm-year). Researchers view this as yet another serious warning sign of the threat of global warming.

Perkins, Lori; Hall, Dorothy

2000-06-25

157

Multi-component diffusion between molten SiO2 inclusions and surrounding felsic melt in an indochinite: Tektites as natural laboratories  

NASA Astrophysics Data System (ADS)

Tektites are natural glasses thought to have formed as a result of melting and quenching of distally ejected terrestrial material upon hypervelocity (>11 km/s) impact on Earth. Some tektites contain inclusions of lechatelierite (nearly pure SiO2 glass; 99-100 wt. % SiO2), generally thought to be the amorphous relicts of partially digested quartz grains (Koeberl, 1994). Electron and ion microprobe analyses of major and minor elements were performed on transects between lechatelierite inclusions and the surrounding felsic glass in an indochinite (sample from Newman et al., 1995). The surrounding glass is peraluminous with an average composition of 73.4 wt.% SiO2, 12.8 wt.% Al2O3, 4.5 wt. % FeO, 2.3 wt.% K2O, and < 2 wt.% (each) CaO, MgO, Na2O, and TiO2. The boundary between the lechatelierite and felsic glass is broad (~30 ?m), with complex concentration profiles reflecting diffusion between the two melts at high temperatures (>2200 °C for formation of lechatelierite; Bunch et al., 2012) prior to quenching. Although all components except SiO2 are pinned to near zero at the same point at the lechatelierite end of the profiles, the shapes of the oxide concentration profiles differ, with Ca and Mg falling off from their far-field values first, followed in order by Fe, Ti, Al, Na, and K. K has apparently propagated the longest distance, diffusing faster than other components from the surrounding melt toward the lechatelierite. Furthermore, concentration profiles of K2O systematically increase, reach a maximum, then decrease closest to lechatelierite, indicating uphill diffusion of K against its concentration gradient. All concentration profiles are asymmetric, becoming steepest towards the most silicic portions of the interdiffusion zone approaching lechatelierite, likely due to the sharp compositional contrast between matrix glass and inclusions. Sato (1974) observed similar alkali enrichment in coronas around quartz xenocrysts in basalt and andesite, where K, and to a lesser degree Na, diffused against their concentration gradients. The uphill diffusion of alkalis in corona glass surrounding quartz was interpreted by Sato (1974) with a diffusion model assuming non-ideality of alkali elements in silicate melt, in which diffusion occurs according to the chemical potential gradient of each species. Preliminary calculations using the MELTS (Ghiorso and Sack, 1995) activity-composition model to transform the composition profiles across lechatelierite and felsic glass into chemical potential profiles (at 2200 °C) indicate that all components, including K2O, diffuse down their own chemical potential gradients. We will investigate these phenomena further in attempt to model the observed profiles. A deeper understanding of this problem may inform the factors controlling diffusion coefficients in silicate melts derived from crustal material, as well as the thermal histories of tektites. Bunch T.E. et al. (2012) P NATL ACAD SCI 109:1903-1912 Ghiorso M.S., Sack R.O. (1995) CONTRIB MINERAL PETR 119:197-212 Koeberl C. (1994) GEOL S AM S 133-151 Newman S. et al. (1995) LPS XXVI 26:1039-1040 Sato H. (1974) CONTRIB MINERAL PETROL 50:49-64

Macris, C. A.; Eiler, J. M.; Asimow, P. D.; Stolper, E. M.

2013-12-01

158

West Coast Chlorophyll Bloom  

NSDL National Science Digital Library

Sea-viewing Wide Field-of-view Sensor (SeaWiFS) on board the Orbview 2 satellite captured the phytoplankton bloom October 6, 2002 . Red represents high concentration of chlorophyll, follow by orange, yellow and green. Land and cloud portions of the image are presented in natural color. SeaWiFS monitors ocean plant life by measuring the amount of chlorophyll in the ocean. Large phytoplankton blooms tend to coincide with natural phenomena that drive that nutrient-rich water to the surface. The process is called upwelling. Winds coming off principal land masses push surface layers of water away from the shore. Into the resulting wind-driven void deeper water underneath the surface layers rushes in toward the coast, bringing with it nutrients for life to bloom. This upwelling fuel the growth of marine phytoplankton which, along with larger seaweeds, nourishes the incredible diversity of creatures found along the northern and central California coast.

Perkins, Lori; Feldman, Gene

2002-10-15

159

OzCoasts  

NSDL National Science Digital Library

Those persons with a penchant for public policy, coastal erosion, and estuaries will sing the praises of the OzCoasts website. Formally launched in 2008, OzCoasts represents a collaborative effort between more than 100 coastal scientists from a range of government agencies and universities across Australia. The materials on the site are divided into six primary areas, including "Coastal Indicators", "Habitat Mapping", and "Landform & Stability Maps". Within each section, visitors will find graphs, maps, charts, and short essays that document a wide range of natural and man-made phenomena including beach erosion, beach geomorphic models, and sea level rise. Visitors can also make their way to the "Glossary" area to get caught up relevant terms and then wander around the "What's New" area for the latest and greatest updates to the website.

160

Northeast Coast, Hokkaido, Japan  

NASA Technical Reports Server (NTRS)

The northeast coast of Hokkaido and Kunashir Island, Japan (44.0N, 143.0E) are seen bordered by drifting sea ice. The sea ice has formed a complex pattern of eddies in response to surface water currents and winds. Photos of this kind aid researchers in describing local ocean current patterns and the effects of wind speed and direction on the drift of surface material, such as ice floes or oil. Kunashir is the southernmost of the Kuril Islands.

1992-01-01

161

Coasts in Crisis  

NSDL National Science Digital Library

This book describes the varied coastal environments of the United States and the natural processes and human actions that are constantly modifying them. Ignorance of these processes exacerbates the tragic collisions between people and nature, such as Hurricane Hugo in South Carolina, which left thousands homeless and destroyed billions of dollars of property. Topics include types of coasts; coastal change, including natural processes, local conditions, and human intervention; case studies of coastal conflicts in Ocean City, Isles Dernieres, Boston Harbor, and the effects of Hurricane Hugo. A summary overview of challenges and opportunities, and suggestions for further reading are also provided.

Williams, S.

162

Coasts in Crisis  

SciTech Connect

Coastal areas are staggering under an onslaught of human activity. We are presently in the process of destroying 70 percent of the world`s 600,000 square kilometers of coral reefs, an ecosystem containing some 200,000 different species and rivaling tropical rain forests in biodiversity. A combination of pollution, habitat destruction, and gross overfishing has led to the collapse of major fisheries and paved the way for malnutrition and disease in regions where people fish for subsistence. Globally, little is being done to manage the crisis of our coasts. Management strategies, if they exist at all, often deal with economic development along a wafer-thin strip of coastal land. Resource degradation is ignored, and watershed management is mostly rhetoric. Although some 55 countries have drawn up coastal management plans, only a handful have been properly implemented. Coasts must be managed in an integrated manner that takes into account the full range of human activities. Initiating this process is costly, time-consuming, and difficult. Yet we have more than three decades of accumulated experience to draw on.

Hinrichsen, D.

1996-11-01

163

[Vaccination against hepatitis B on the Ivory Coast: study of the anti-HBs response in healthy adult subjects carrying only anti-HBc antibodies before vaccination].  

PubMed

A total of 103 volunteers, from 18 to 55 years of age, have received the hevac B Pasteur 5 micrograms vaccine subcutane on sly; one injection a month during three months and one booster injection after one year. The study of the anti-HBs reaction of the subjects, with regard to the serological status to the hepatite B virus before inoculation, has shown that only 78.8% of the subjects, who are only positive towards the anti-HBc antibody, will develop an anti-HBs response of primary type with a relatively low value. In contrast, all anti-HBc and/or anti-HBs subjects, who are positive before inoculation, react with relatively high anti-HBs values right after the first injection, of the seronegative subjects before inoculation. 93.3% will develop an anti-HBs seroconversion after the complete inoculation procedure. PMID:3698152

Ouattara, S A; Meite, M; Aron, Y

1986-01-01

164

Can the Language of Rights Get Hold of the Complex Realities of Child Domestic Work?: The Case of Young Domestic Workers in Abidjan, Ivory Coast  

ERIC Educational Resources Information Center

This review examines refractions of children's rights in development practice from an anthropological point of view and considers the case of young domestic girls working in Abidjan. The author argues that child labour legislation and the children's rights perspective in Abidjan is permeated by patriarchal values that mask the exploitation of work…

Jacquemin, Melanie

2006-01-01

165

Seminar on the Training of Teachers, by the Interdisciplinary System, To Use This System in Schools (Bouake, Ivory Coast, March 24 - April 4, 1970). Final Report.  

ERIC Educational Resources Information Center

This document summarizes the discussion and recommendation made at a meeting held to consider ways and means of putting the syllabuses of teacher training colleges and subsequently those of primary schools on an interdisciplinary footing. The conference was attended by teachers on the staff of primary teacher training colleges in Cameroon, the…

United Nations Educational, Scientific, and Cultural Organization, Paris (France).

166

[Therapeutic efficacy of chloroquine in the uncomplicated malaria due to Plasmodium falciparum in hospital patients in central Ivory Coast (1997-2000)].  

PubMed

A study in vivo of Plasmodium falciparum sensitivity to chloroquine was carried out from April 1997 to February 2000 at Yamoussoukro, Kossou and Bouaké in the central region of Côte d'Ivoire. This study was included in the national Plasmodium falciparum-sensitivity program. One hundred and sixteen subjects consulting for suspected malaria were included according to the WHO's standard of 14 days. Chloroquine was administered on a dosage of 25 mg/kg, spread over three days. Among 108 subjects who finished the treatment, 26.9% (29/108) had therapeutic failure to chloroquine (23 precocious therapeutic failure and 6 late therapeutic failure). Chloroquine was more efficacious in Yamoussoukro (87.5% of clinical appropriate response) and Bouaké (82.5%) than in Kossou (61.7%). Parasitic reduction on subjects with therapeutic failure was higher than 85%. The risk of therapeutic failure is not linked to age of patient. Before a revaluation of this situation, chloroquine should always be recommended as a first-line treatment for uncomplicated malaria for the local populations. PMID:12596374

Adou-Bryn, K D; Krelo, K; Akoussi, C F G; Boni, N M C; Yapo, G C; Penali, L K; Ouhon, J; Assoumou, A; Ehouman, A

2002-11-01

167

A coasting cosmology  

NASA Technical Reports Server (NTRS)

A Friedmann-Robertson-Walker cosmology with energy density decreasing in expansion as 1/R-squared, where R is the Robertson-Walker scale factor, is studied. In such a model the universe expands with constant velocity; hence the term coasting cosmology. Observational consequences of such a model include the age of the universe, the luminosity distance-redshift relation (the Hubble diagram), the angular diameter distance-redshift relation, and the galaxy number count as a function of redshift. These observations are used to limit the parameters of the model. Among the interesting consequences of the model are the possibility of an ever-expanding closed universe, a model universe with multiple images at different redshifts of the same object, a universe with Omega - 1 not equal to 0 stable in expansion, and a closed universe with radius smaller than 1/H(0).

Kolb, Edward W.

1989-01-01

168

40Ar-39Ar step-heating of impact glasses from the Nördlinger Ries impact crater—Implications on excess argon in impact melts and tektites  

NASA Astrophysics Data System (ADS)

Seven impact melts from various places in the Nördlinger Ries were dated by 40Ar-39Ar step-heating. The aim of these measurements was to increase the age data base for Ries impact glasses directly from the Ries crater, because there is only one Ar-Ar step-heating spectrum available in the literature. Almost all samples display saddle-shaped age spectra, indicating the presence of excess argon in most Ries glass samples, most probably inherited argon from incompletely degassed melt and possibly also excess argon incorporated during cooling from adjacent phases. In contrast, moldavites usually contain no inherited argon, probably due to their different formation process implying solidification during ballistic transport. The plateau age of the only flat spectrum is 14.60 ± 0.16 (0.20) Ma (2?), while the total age of this sample is 14.86 ± 0.20 (0.22) Ma (isochron age: 14.72 ± 0.18 [0.22] Ma [2?]), proofing the chronological relationship of the Ries impact and moldavites. The total ages of the other samples range between 15.77 ± 0.52 and 20.4 ± 1.0 Ma (2?), implying approximately 2-40% excess 40Ar (compared to the nominal age of the Ries crater) in respective samples. Thus, the age of 14.60 ± 0.16 (0.20) (2?) (14.75 ± 0.16 [0.20 Ma] [2?], calculated using the most recent suggestions for the K decay constants) can be considered as reliable and is within uncertainties indistinguishable from the most recent compilation for the age of the moldavite tektites.

Schwarz, Winfried H.; Lippolt, Hans J.

2014-06-01

169

40Ar-39Ar step-heating of impact glasses from the Nördlinger Ries impact crater—Implications on excess argon in impact melts and tektites  

NASA Astrophysics Data System (ADS)

Seven impact melts from various places in the Nördlinger Ries were dated by 40Ar-39Ar step-heating. The aim of these measurements was to increase the age data base for Ries impact glasses directly from the Ries crater, because there is only one Ar-Ar step-heating spectrum available in the literature. Almost all samples display saddle-shaped age spectra, indicating the presence of excess argon in most Ries glass samples, most probably inherited argon from incompletely degassed melt and possibly also excess argon incorporated during cooling from adjacent phases. In contrast, moldavites usually contain no inherited argon, probably due to their different formation process implying solidification during ballistic transport. The plateau age of the only flat spectrum is 14.60 ± 0.16 (0.20) Ma (2?), while the total age of this sample is 14.86 ± 0.20 (0.22) Ma (isochron age: 14.72 ± 0.18 [0.22] Ma [2?]), proofing the chronological relationship of the Ries impact and moldavites. The total ages of the other samples range between 15.77 ± 0.52 and 20.4 ± 1.0 Ma (2?), implying approximately 2-40% excess 40Ar (compared to the nominal age of the Ries crater) in respective samples. Thus, the age of 14.60 ± 0.16 (0.20) (2?) (14.75 ± 0.16 [0.20 Ma] [2?], calculated using the most recent suggestions for the K decay constants) can be considered as reliable and is within uncertainties indistinguishable from the most recent compilation for the age of the moldavite tektites.

Schwarz, Winfried H.; Lippolt, Hans J.

2014-05-01

170

47 CFR Procedures - Private Coast Stations  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Private Coast Stations Procedures Special Procedures Telecommunication FEDERAL COMMUNICATIONS...MARITIME SERVICES Operating Requirements and Procedures Special Procedures-Public Coast Stations...

2010-10-01

171

Louisiana Gulf Coast onshore  

SciTech Connect

Thirty-eight parishes are included in the south Louisiana onshore district covered by this report. During 1980, a total of 1390 wells were drilled in onshore south Louisiana, with a total footage of 15,706,832. Of this total, wildcat wells numbered 269, exploratory wells numbered 232, and development wells numbered 889. On a percentage basis, 7% of all wildcat wells, 39% of all exploratory wells, and 59% of all development wells were successful completions. Wildcat drilling activity resulted in 19 new field discoveries during 1980. Total onshore leasing activity increased for the first time since 1976. Leasing in the district during 1980 amounted to 1,491,621 ac. This was a 51% increase over the 989,630 ac leased during 1979. Avoyelles, Tangipahoa, St. Helena, Terrebonne, and St. Landry parishes recorded the highest levels of leasing activity during the year. Geophysical activity in the Louisiana Gulf Coast onshore district increased for the eighth consecutive year. During 1980, the total geophysical activity amounted to 1656 crew weeks, marking an increase of 331 crew weeks over the 1979 total of 1325 crew weeks. The highest levels of geophysical activity were recorded in Cameron, Vermilion, Terrebonne, Tangipahoa, and St. Tammany parishes. The current high level of exploration activity in south Louisiana is expected to continue for the next several years.

McDowell, K.O. (Arco Oil and Gas Co., Inc., Lafayette, LA); Rives, J.S. II

1981-10-01

172

47 CFR 80.1119 - Receipt and acknowledgement of distress alerts by coast stations and coast earth stations.  

Code of Federal Regulations, 2012 CFR

...Receipt and acknowledgement of distress alerts by coast stations and coast earth stations...Receipt and acknowledgement of distress alerts by coast stations and coast earth stations...Coast stations that receive a distress alert should defer acknowledgement for...

2012-10-01

173

47 CFR 80.1119 - Receipt and acknowledgement of distress alerts by coast stations and coast earth stations.  

Code of Federal Regulations, 2011 CFR

...Receipt and acknowledgement of distress alerts by coast stations and coast earth stations...Receipt and acknowledgement of distress alerts by coast stations and coast earth stations...Coast stations that receive a distress alert should defer acknowledgement for...

2011-10-01

174

Development of reproductive organs in the ivory shell Babylonia japonica: observations from wild populations and laboratory-reared juveniles.  

PubMed

We histologically examined normal differentiation and development of genital tract and gonad in the ivory shell Babylonia japonica (Buccinidae) to determine whether the formation of male-type genitalia in imposex-exhibiting females mimics the normal development of male genitalia in prosobranch gastropods. We used a wild-caught 2-year-old specimen and laboratory-reared juveniles aged 0-24 months. Gonad differentiation was unclear before age 14 months, but progressed after 16 months. Both sexes had complete genital tract and mature gonad at 20 months. However, differentiation and development occurred earlier in females than in males. Development of genital tract preceded gonad differentiation. Vas deferens morphogenesis in males resembled that in imposex-exhibiting females. These findings help to understand the morphogenesis of genital tract and gonad in prosobranch gastropods and will contribute to more in-depth studies of the mode of action of organotin compounds such as TBT and TPhT in imposex development in female prosobranch gastropods. PMID:23921202

Horiguchi, Toshihiro; Ohta, Yasuhiko; Hamada, Fumihiko; Urushitani, Hiroshi; Cho, Hyeon-Seo; Shiraishi, Hiroaki

2014-02-01

175

77 FR 58930 - Fisheries Off West Coast States; West Coast Salmon Fisheries; Announcing OMB Approval of...  

Federal Register 2010, 2011, 2012, 2013

...Fisheries Off West Coast States; West Coast Salmon Fisheries; Announcing OMB Approval of...CONTACT: Peggy Mundy, Northwest Region Salmon Management Division, NMFS, 206-526-4323...regulatory areas in the commercial ocean salmon fishery off the coasts of...

2012-09-25

176

76 FR 57945 - Fisheries Off West Coast States; West Coast Salmon Fisheries; Notice of Availability for...  

Federal Register 2010, 2011, 2012, 2013

...Fisheries Off West Coast States; West Coast Salmon Fisheries; Notice of Availability for Amendment 16 to the Salmon Fishery Management Plan AGENCY: National...submitted Amendment 16 to the Pacific Coast Salmon Fishery Management Plan (FMP) for...

2011-09-19

177

77 FR 67327 - Fisheries Off West Coast States; West Coast Salmon Fisheries; Notice of Availability for...  

Federal Register 2010, 2011, 2012, 2013

...Fisheries Off West Coast States; West Coast Salmon Fisheries; Notice of Availability for Amendment 17 to the Salmon Fishery Management Plan AGENCY: National...transmitted Amendment 17 to the Pacific Coast Salmon Fishery Management Plan (FMP) for...

2012-11-09

178

47 CFR 80.1119 - Receipt and acknowledgement of distress alerts by coast stations and coast earth stations.  

Code of Federal Regulations, 2013 CFR

...distress alerts by coast stations and coast earth stations. 80.1119 Section 80.1119...distress alerts by coast stations and coast earth stations. (a) Coast stations...watches for coast stations.) (b) Coast earth stations in receipt of distress...

2013-10-01

179

Bryan Coast, English Coast, Alexander Island, Fallieres Coast, and Bellingshausen Sea, Antarctica  

NASA Technical Reports Server (NTRS)

This image of Antarctica shows the Bryan Coast (lower left), the English Coast (lower central), Alexander Island (middle right), the Fallieres Coast (top right), and the Bellingshausen Sea. The entire continent has been dedicated to peaceful scientific investigation since 1961, with the signing of the Antarctic Treaty.The waters surrounding Antarctica are intensely cold. Salt water freezes at -2C, allowing sea ice to form. The middle left portion of the image shows quite a lot of sea ice in the Bellingshausen Sea. During the Antarctic winter, when data for this image was acquired, Antarctica doubles in size to about 28.5 million square km (or about 11 million square miles), and temperatures in the -60C range are common.This true-color image was compiled from MODIS data gathered March 29, 2002. Credit: Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC

2002-01-01

180

Nearshore Suspended Sediment Variations, Central Surinam Coast.  

National Technical Information Service (NTIS)

Nearshore suspended sediment concentration along the muddy Surinam coast is highly variable; maximum values are many times greater than on other muddy coasts. Water samples taken at four field stations during various stages of the tide range in concentrat...

J. T. Wells J. M. Coleman

1977-01-01

181

Real-time PCR detection and quantification of elephantid DNA: species identification for highly processed samples associated with the ivory trade.  

PubMed

The ivory industry is the single most serious threat to global elephant populations. A highly sensitive, species-specific real-time PCR assay has been developed to detect and quantify African elephant (Loxodonta africana), Asian elephant (Elephas maximus) and Woolly Mammoth (Mammuthus primigenius) mitochondrial DNA from highly processed samples involved in the international ivory trade. This assay is especially useful for highly processed samples where there are no distinguishing morphological features to identify the species of origin. Using species-specific Taqman(®) probes targeting a region of the mitochondrial cytochrome b gene, we developed an assay that can be used to positively identify samples containing elephant or Woolly mammoth DNA faster and more cost-effectively than traditional sequencing methods. Furthermore, this assay provides a diagnostic result based on probe hybridization that eliminates ambiguities associated with traditional DNA sequence protocols involving low template DNA. The real-time method is highly sensitive, producing accurate and reproducible results in samples with as few as 100 copies of template DNA. This protocol can be applied to the enforcement of the Convention on the International Trade of Endangered Species (CITES), when positive identification of species from illegally traded products is required by conservation officers in wildlife forensic cases. PMID:22257967

Wozney, Kristyne Michelle; Wilson, Paul J

2012-06-10

182

Red Tide off Texas Coast  

NASA Technical Reports Server (NTRS)

Red tides (algae) bloomed late this summer along a 300-mile stretch of Texas' Gulf Coast, killing millions of fish and shellfish as well as making some people sick. State officials are calling this the worst red tide bloom in 14 years. The algae produces a poison that paralyzes fish and prevents them from breathing. There is concern that the deadly algae could impact or even wipe out this year's oyster harvest in Texas, which usually peaks during the Thanksgiving and Christmas holidays. The red tides were first observed off the Texas coast in mid-August and have been growing steadily in size ever since. Red tides tend to bloom and subside rapidly, depending upon changes in wind speed and direction, water temperature, salinity, and rainfall patterns (as the algae doesn't do as well in fresher water). This true-color image of the Texas Gulf Coast was acquired on September 29, 2000, by the Moderate-resolution Imaging Spectroradiometer (MODIS) flying aboard NASA's Terra spacecraft. The red tide can be seen as the dark reddish discoloration in the ocean running southwest to northeast along the coast. In this scene, the bloom appears to be concentrated north and east of Corpus Christi, just off Matagorda Island. The image was made at 500-meter resolution using a combination of MODIS' visible bands 1 (red), 4 (green), and 3 (blue). The city of Houston can be seen clearly as the large, greyish cluster of pixels to the north and west of Galveston Bay, which is about mid-way up the coastline in this image. Also visible in this image are plumes of smoke, perhaps wildfires, both to the north and northeast of Houston. For more information about red tides, refer to the Texas Red Tide Web site. Image courtesy Andrey Savtchenko, MODIS Data Support Team, and the MODIS Ocean Team, NASA's Goddard Space Flight Center

2002-01-01

183

75 FR 24482 - Fisheries Off West Coast States; West Coast Salmon Fisheries; 2010 Management Measures  

Federal Register 2010, 2011, 2012, 2013

...Fisheries Off West Coast States; West Coast Salmon Fisheries; 2010 Management Measures...management measures for the 2010 ocean salmon fisheries off Washington, Oregon, and California and the 2011 salmon seasons opening earlier than May...

2010-05-05

184

77 FR 25915 - Fisheries Off West Coast States; West Coast Salmon Fisheries; 2012 Management Measures  

Federal Register 2010, 2011, 2012, 2013

...Fisheries Off West Coast States; West Coast Salmon Fisheries; 2012 Management Measures...management measures for the 2012 ocean salmon fisheries off Washington, Oregon, and California and the 2013 salmon seasons opening earlier than May...

2012-05-02

185

76 FR 32876 - Fisheries Off West Coast States; West Coast Salmon Fisheries; 2011 Management Measures; Correction  

Federal Register 2010, 2011, 2012, 2013

...Fisheries Off West Coast States; West Coast Salmon Fisheries; 2011 Management Measures...management measures for the 2011 ocean salmon fisheries off Washington, Oregon, and California and the 2012 salmon seasons opening earlier than May...

2011-06-07

186

76 FR 25246 - Fisheries Off West Coast States; West Coast Salmon Fisheries; 2011 Management Measures  

Federal Register 2010, 2011, 2012, 2013

...Fisheries Off West Coast States; West Coast Salmon Fisheries; 2011 Management Measures...management measures for the 2011 ocean salmon fisheries off Washington, Oregon, and California and the 2012 salmon seasons opening earlier than May...

2011-05-04

187

78 FR 25865 - Fisheries Off West Coast States; West Coast Salmon Fisheries; 2013 Management Measures  

Federal Register 2010, 2011, 2012, 2013

...Fisheries Off West Coast States; West Coast Salmon Fisheries; 2013 Management Measures...management measures for the 2013 ocean salmon fisheries off Washington, Oregon, and California and the 2014 salmon seasons opening earlier than May...

2013-05-03

188

United States Coast Pilot 2. Atlantic Coast: Cape Cod to Sandy Hook (Seventeenth Edition).  

National Technical Information Service (NTIS)

United States Coast Pilots are a series of nine nautical books that cover a wide variety of information important to navigators of U.S. coastal and intracoastal waters, and the waters of the Great Lakes. This volume of Coast Pilot 2, Atlantic Coast, Cape ...

1982-01-01

189

No Ivory Tower.  

ERIC Educational Resources Information Center

Measured the impact of economic cycles on independent colleges and universities, using a national tuition discounting survey. Found that economic cycles and pricing pressures have measurable and predictable effects on independent higher education. (EV)

Doti, James L.

2002-01-01

190

Scaling the Ivory Tower  

ERIC Educational Resources Information Center

It used to be that newly minted Ph.D.s had to establish themselves and cut their academic teeth at less competitive colleges and universities. That was certainly true for young Black scholars. The prospects of landing a coveted teaching position at one of the nation's eight Ivy League institutions were dim. In the years leading up to the Civil…

Watson, Jamal Eric

2011-01-01

191

Leaving the Ivory Tower  

NSDL National Science Digital Library

It all began with casual conversation between a university supervisor and classroom teachers and approval to use an unused classroom at a local elementary school. The space became the hub of an exciting professional development (PD) opportunity for classr

Decarlo, Carmine

2010-07-01

192

Big Sur Coast Land Use Plan.  

National Technical Information Service (NTIS)

the plan contained in these pages is the Land Use Plan for the Big Sur Coast segment of Monterey County's Local Coastal Program. This plan supersedes the Monterey County Coast Master Plan adopted in 1962 and in effect for twenty two years. As the primary ...

1986-01-01

193

Gulf Coast Community College's Memory Project  

ERIC Educational Resources Information Center

Gulf Coast Community College in Panama City, Florida, is celebrating a fifty-year anniversary in 2007. Maintained by the library, the school's archives represent the historical contributions on a local and national level. Gulf Coast Community College library is ensuring the school's historical significance through the digitization of its…

Burrell, Matthew D.

2005-01-01

194

Gulf Coast Community College' Memory Project  

Microsoft Academic Search

Gulf Coast Community College in Panama City, Florida, is celebrating a fifty-year anniversary in 2007. Maintained by the library, the school' archives represent the historical contributions on a local and national level. Gulf Coast Community College library is ensuring the school' historical significance through the digitization of its materials. This article describes an archival project including sorting, preservation, and digitizing

Matthew D. Burrell

2007-01-01

195

Systems Engineering of Coast Guard Aviator Training.  

ERIC Educational Resources Information Center

This paper describes a total-program application of the systems engineering concept of the U.S. Coast Guard aviation training programs. The systems approach used treats all aspects of the training to produce the most cost-effective integration of academic, synthetic, and flight training for the production of graduate Coast Guard aviators. The…

Hall, Eugene R.; Caro, Paul W.

196

Circulation along the Mexican Caribbean coast  

Microsoft Academic Search

Data from an array of seven subsurface upward-looking moored Acoustic Doppler Current Profilers (ADCPs) and four subsurface pressure sensors deployed from August 2002 to August 2003 along the Caribbean coast of Mexico showed that the currents in the area have a predominant northeastward direction along the coast, are coherent within the upper 130 m of the water column, and have

P. Cetina; J. Candela; J. Sheinbaum; J. Ochoa; A. Badan

2006-01-01

197

Reflections on North American Pacific Coast prehistory  

Microsoft Academic Search

The Pacific Coast of North America was occupied by many distinctive groups of coastal hunter-gatherers at the times of early contacts with Europeans. Despite significant cultural diversity, Pacific Coast peoples shared lifeways oriented toward generally similar marine, nearshore, littoral, and estuarine habitats. In this paper, we examine some major issues that guide much of the archaeology done along the Pacific

Madonna L. Moss; Jon M. Erlandson

1995-01-01

198

Discovering the "-Ologies" on the Jurassic Coast  

ERIC Educational Resources Information Center

The Jurassic Coast is Britain's only natural World Heritage site, a tangible time-line that takes one through 185 million years of history in 95 miles of coast. It provides individuals with a world-famous educational resource and an unrivalled outdoor classroom that has played a key role in the study of earth sciences. The author is keen to ignite…

Peacock, Alan

2007-01-01

199

76 FR 66965 - Treasure Coast Specialty Pharmacy Decision and Order  

Federal Register 2010, 2011, 2012, 2013

...11-68] Treasure Coast Specialty Pharmacy Decision and Order On September 14...issued to Treasure Coast Specialty Pharmacy, be, and it hereby is, revoked. I...application of Treasure Coast Specialty Pharmacy, to renew or modify his...

2011-10-28

200

50 CFR 660.518 - Pacific Coast Treaty Indian Rights.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Pacific Coast Treaty Indian Rights. 660.518 Section 660.518 Wildlife and Fisheries FISHERY CONSERVATION...OFF WEST COAST STATES Coastal Pelagics Fisheries § 660.518 Pacific Coast Treaty Indian Rights....

2013-10-01

201

78 FR 10557 - Fisheries Off West Coast States; West Coast Salmon Fisheries; Amendment 17 to the Salmon Fishery...  

Federal Register 2010, 2011, 2012, 2013

...Fisheries Off West Coast States; West Coast Salmon Fisheries; Amendment 17 to the Salmon Fishery Management Plan AGENCY: National Marine...to implement Amendment 17 to the Pacific Coast Salmon Fishery Management Plan for Commercial and...

2013-02-14

202

77 FR 75101 - Fisheries Off West Coast States; West Coast Salmon Fisheries; Amendment 17 to the Salmon Fishery...  

Federal Register 2010, 2011, 2012, 2013

...Fisheries Off West Coast States; West Coast Salmon Fisheries; Amendment 17 to the Salmon Fishery Management Plan AGENCY: National Marine...to implement Amendment 17 to the Pacific Coast Salmon Fishery Management Plan for Commercial and...

2012-12-19

203

Southwest coast of Greenland and Davis Strait  

NASA Technical Reports Server (NTRS)

This true-color image was taken by MODIS as it passed over the southwest coast of Greenland (right) and the Davis Strait (center and left). The Davis Strait connects Baffin Bay to the north and the Labrador Sea to the south, and separates Greenland from Baffin Island, Canada. The Davis Strait is part of the Northwest Passage, a navigable seaway connecting the Atlantic Ocean and the Pacific Ocean. The image shows the prevailing currents in the area, with the warm water of a branch of the North Atlantic Drift flowing northward along the Greenland coast, and the cold, iceberg-filled Labrador Current flowing southward along the Baffin Island coast.

2002-01-01

204

27 CFR 9.116 - Sonoma Coast.  

Code of Federal Regulations, 2013 CFR

...this section is âSonoma Coastâ. (b) Approved map. The approved maps for determining the boundary of the Sonoma Coast...area are the following six U.S.G.S. topographic maps: (1) Sonoma County, California, scale...

2013-04-01

205

The Coast Guard Comes to Class.  

ERIC Educational Resources Information Center

Focuses on Sea Partners, by the United States Coast Guard, that enables students to understand how pollution affects the marine environment. Correlates the activities with the National Science Education Standards. (DDR)

Fawcett, Paul

2002-01-01

206

Eighteenth annual West Coast theoretical chemistry conference  

SciTech Connect

Abstracts are presented from the eighteenth annual west coast theoretical chemistry conference. Topics include molecular simulations; quasiclassical simulations of reactions; photodissociation reactions; molecular dynamics;interface studies; electronic structure; and semiclassical methods of reactive systems.

NONE

1997-05-01

207

Coast Guard AHLTA Technology Business Case Analysis.  

National Technical Information Service (NTIS)

The Coast Guard must deliver AHLTA to its clinics, either through direct connection to military treatment facilities (MTFs), making the clinics satellite clinics, or through developing their own servers at the Operational Service Center (OSC) complex in M...

M. R. Freese

2007-01-01

208

Analysis of the Coast Guard Enlisted Attrition.  

National Technical Information Service (NTIS)

In this this thesis, survival analysis is used to study US Coast Guard enlisted attrition behavior in terms of individual personnel characteristics such as sex, marital status, race, paygrade and rating. Results obtained based on 8 years of historical dat...

L. E. Rubiano

1993-01-01

209

Geophysical Investigations off the Surinam Coast.  

National Technical Information Service (NTIS)

The results are given of a geophysical survey (seismics, magnetics, gravity) off the Surinam coast. This survey was planned in addition to the previous gravity and magnetic measurements, and covers both the Continental Shelf and the adjoining Guiana margi...

B. J. Collette J. A. Schouten K. W. Rutten D. J. Doornbos W. H. Staverman

1971-01-01

210

What's Changing in East Coast Fuels Markets?  

EIA Publications

The U.S. East Coast petroleum product market is undergoing fundamental changes from the standpoint of supply and demand. In addition to the announced idling and potential closure of several major refineries, a number of Northeastern states plan a transition to ultra-low sulfur diesel for heating oil use beginning with New York in the summer of 2012. This article provides an overview of the Energy Information Administration's recent analyses related to East Coast fuels markets.

2012-04-17

211

The Chicago–East Coast Corridor: Changing Intermodal Patterns  

Microsoft Academic Search

The Chicago–East Coast Corridor is a network of highways and railroad tracks connecting Chicago to cities on the East Coast. Cargos flow through it in both directions—Asian cargos flow from West Coast ports through Chicago for eastward delivery, and cargos from India and Europe flow from East Coast seaports to Chicago and beyond for westward delivery. This heavily used Corridor

Bradley Hull

2012-01-01

212

The U.C.C. and Franchise Act Remedies: Coast to Coast Stores, Inc. v. Gruschus  

Microsoft Academic Search

Coast to Coast Stores, Inc. v. Gruschus was the first Washington case to deal with the potential conflict between the Uniform Commercial Code (U.C.C.) and the Franchise Investment Protection Act (FIPA), arising when a franchisor repossesses goods after a franchisee defaults under a security agreement. The Washington Supreme Court avoided the conflict, however, by holding that because the franchisor never

Misty Ellen Mondress

1986-01-01

213

The Reception and Animation of Out-of-School Educational Television Programs in the Ivory Coast: A Case Study of Four Villages. An English Summary by L. Theresa Silverman.  

National Technical Information Service (NTIS)

This impact study for a series of Out of School Television (OSTV--Tele Pour Tous) broadcasts on village water supplies presents a qualitative examination of some of the problems encountered in the organization of viewing groups in four selected villages. ...

A. Benveniste

1977-01-01

214

Fluctuations of cambial activity in relation to precipitation result in annual rings and intra-annual growth zones of xylem and phloem in teak (Tectona grandis) in Ivory Coast  

PubMed Central

Background and Aims Teak forms xylem rings that potentially carry records of carbon sequestration and climate in the tropics. These records are only useful when the structural variations of tree rings and their periodicity of formation are known. Methods The seasonality of ring formation in mature teak trees was examined via correlative analysis of cambial activity, xylem and phloem formation, and climate throughout 1·5 years. Xylem and phloem differentiation were visualized by light microscopy and scanning electron microscopy. Key Results A 3 month dry season resulted in semi-deciduousness, cambial dormancy and formation of annual xylem growth rings (AXGRs). Intra-annual xylem and phloem growth was characterized by variable intensity. Morphometric features of cambium such as cambium thickness and differentiating xylem layers were positively correlated. Cambium thickness was strongly correlated with monthly rainfall (R2 = 0·7535). In all sampled trees, xylem growth zones (XGZs) were formed within the AXGRs during the seasonal development of new foliage. When trees achieved full leaf, the xylem in the new XGZs appeared completely differentiated and functional for water transport. Two phloem growth rings were formed in one growing season. Conclusions The seasonal formation pattern and microstructure of teak xylem suggest that AXGRs and XGZs can be used as proxies for analyses of the tree history and climate at annual and intra-annual resolution.

Die, Agathe; Kitin, Peter; Kouame, Francois N'Guessan; Van den Bulcke, Jan; Van Acker, Joris; Beeckman, Hans

2012-01-01

215

Climate change sensitivity of the African ivory nut palm, Hyphaene petersiana Klotzsch ex Mart. (Arecaceae) - a keystone species in SE Africa  

NASA Astrophysics Data System (ADS)

Africa is the most vulnerable continent to future climate change. Profound changes are projected for southwestern Africa with increased drying, notably with delayed onset of the rainy season in September-November, and temperature increases in all seasons. The projected climate changes combined with land-use changes are thought to constitute the main threats to biodiversity in the 21st century. To be able to predict the potential impact on biodiversity, it is crucial to achieve a better insight into the controls of contemporary species ranges. Using species distribution modeling, we assessed the climate sensitivity of the key-stone palm species Hyphaene petersiana (African ivory nut palm) in southern Africa. We tested the relative roles of climate vs. non-climatic range-controls and found that climate had a clear effect on the range of H. petersiana and that especially water-related variables (annual precipitation and precipitation driest quarter) were of high importance. Nevertheless, latitude was the overall most dominant variable, reflecting spatial constraints on the continental-scale distribution. Of the remaining non-climatic factors, soil type and human influence were as important as the climatic factors. A future decrease in annual precipitation below 400 mm and hydrological changes towards drier conditions could cause a dramatic decline in H. petersiana populations, while the influence of temperature changes is less clear. The ongoing, unsustainable utilization pressures on this palm species by humans and livestock are likely to exacerbate the negative effect of future climate changes on its populations, especially, given the expected human population increase in Africa.

Blach-Overgaard, A.; Svenning, J.-C.; Balslev, H.

2009-11-01

216

GULF COAST REGIONAL ASSESSMENT: PROJECT DESCRIPTION  

EPA Science Inventory

As part of the USGCRP's First National Assessment effort, EPA is sponsoring the Gulf Coast Regional Assessment. Southern University and A&M College and its collaborators are analyzing and evaluating the potential consequences of climate variability and change for the region in th...

217

METRO EAST COAST ASSESSMENT: FINAL ASSESSMENT REPORT  

EPA Science Inventory

The Metropolitan East Coast Regional Assessment is one of eighteen regional components of The U.S. National Assessment of the Potential Consequences of Climate Variability and Change, organized by the U.S. Global Change Research Program. The goal of each regional assessment is to...

218

Modeling the erosion of cohesive clay coasts  

Microsoft Academic Search

A model was developed to study the erosion of cohesive clay coasts in macro- to non-tidal environments. The model shares some of the characteristics of previous models, including the erosion of bare clay surfaces by wave generated bottom shear stresses, and of mobile, sediment-covered surfaces by abrasion. It differs from previous models, however, in several important ways. The morphodynamics of

Alan S. Trenhaile

2009-01-01

219

Raphidophyceans on the coasts of Mexico  

Microsoft Academic Search

The presence of ichthyotoxic phytoflagellates Chattonella marina, Fibrocapsa japonica, and Heterosigma akashiwo of the algal class Raphidophyceae are reported for first time in the Gulf of Mexico and the Pacific coast of Mexico. Phytoplankton were sampled to isolate and identify species, and to develop growth experiments in different media. We observed living material of the three species, but were unable

Christine J. Band-Schmidt; Lourdes Morquecho; David U. Hernández-Becerril; Amada Reyes-Salinas; Ernesto Bravo-Sierra

2004-01-01

220

Cogeneration at Hilo Coast Processing Company  

Microsoft Academic Search

The Hilo Coast Processing Co. has a sugar mill at Pepeekeo, Hawaii which burns approximately 400,000 tons of bagasse and wood chips annually for the simultaneous generation of process heat and electric power. The application of cogeneration at the Company has been a success. With approximately 85% of the energy coming from a replenishable fuel source which is solar energy

B. C. Krippene; F. S. Nolte; L. Iwami

1979-01-01

221

Developments in Louisiana Gulf Coast in 1968  

Microsoft Academic Search

The Louisiana Gulf Coast includes the 38 S. parishes of Louisiana and 16 continental shelf areas offshore. Oil and gas are produced from strata ranging in age from Cretaceous to Pleistocene. There were 2,505 exploratory and development wells drilled in 1968, an increase of 394 from the previous year. Of the 801 exploratory wells, 21% were successful. Discovery of 26

J. H. Van Amringe; F. G. Sierveld

1969-01-01

222

Coast Guard's Response to Spilled Oil  

ERIC Educational Resources Information Center

The Coast Guard utilizes a number of monitoring detectors, sensors, and techniques to find, recover and identify oil spills. Discussed in this article are in-situ and airborne sensors, systems developed to provide clean-up capability such as air deployable anti-pollution transfer system (ADAPTS), and techniques which will determine the source of a…

Ard, R. W., Jr.

1976-01-01

223

SOUTH COAST SCHOOL BUS IDLING STUDY  

EPA Science Inventory

The Natural Resources Defense Council (NRDC) and Coalition for Clean Air (CCA) conducted this study to provide information useful for estimating exposure of children in the South coast air basin to diesel exhaust while buses are loading and unloading at shcool sites. It was foun...

224

Greenland: Full West Coast (2nd render)  

NSDL National Science Digital Library

This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm-year) along the coast and increased slightly in the center (+2 cm-year). Researchers view this as yet another serious warning sign of the threat of global warming.

Perkins, Lori; Hall, Dorothy

2000-06-25

225

Greenland: Pan Southern Tip to East Coast  

NSDL National Science Digital Library

This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm-year) along the coast and increased slightly in the center (+2 cm-year). Researchers view this as yet another serious warning sign of the threat of global warming.

Perkins, Lori; Hall, Dorothy

2000-06-25

226

Red Tide Kills Fish, Fouls Gulf Coast  

NSDL National Science Digital Library

This CBS news article reports a toxic algae bloom that spread along the Texas Gulf coast in 2000, killing millions of fish and fouling beaches with their remains. The article explains how red tide affects fish and describes health threats to humans.

News, Cbs

227

Hurricanes Affecting the Texas Gulf Coast.  

National Technical Information Service (NTIS)

Along the Texas Gulf Coast, damage from high water caused by hurricanes and their heavy attendant rains has been greater than the damage done by hurricane winds and hurricane-spawned tornadoes combined. Because of wind set-up and the configuration and dep...

J. T. Carr

1967-01-01

228

Pacific Coast Groundfish Management: Evolution and Prospects  

Microsoft Academic Search

SUMMARY Although federal management of Pacific coast groundfish strongly resembles previous state and international management programs, the current fishery management plan (FMP) contains i mportant new elements as well. The groundfish FMP adopts state f ishing gear regulations, but seeks more coastwide uniformity. As in previous internat agreements, foreign fishing is limited to Pacific whiting and mackerel (with minimum incidental

Daniel D. Huppert

229

Bio-Alpha off the West Coast.  

National Technical Information Service (NTIS)

LONG-TERM GOALS: Develop quantitative models of the effects of fish with swim bladders on attenuation (bio-alpha), transmission loss, and scintillation index in the ocean. OBJECTIVES: Conduct an experiment off the west coast to determine the effects of ha...

O. Diachok

2012-01-01

230

Tsunami Risk for the Caribbean Coast  

NASA Astrophysics Data System (ADS)

The tsunami problem for the coast of the Caribbean basin is discussed. Briefly the historical data of tsunami in the Caribbean Sea are presented. Numerical simulation of potential tsunamis in the Caribbean Sea is performed in the framework of the nonlinear-shallow theory. The tsunami wave height distribution along the Caribbean Coast is computed. These results are used to estimate the far-field tsunami potential of various coastal locations in the Caribbean Sea. In fact, five zones with tsunami low risk are selected basing on prognostic computations, they are: the bay "Golfo de Batabano" and the coast of province "Ciego de Avila" in Cuba, the Nicaraguan Coast (between Bluefields and Puerto Cabezas), the border between Mexico and Belize, the bay "Golfo de Venezuela" in Venezuela. The analysis of historical data confirms that there was no tsunami in the selected zones. Also, the wave attenuation in the Caribbean Sea is investigated; in fact, wave amplitude decreases in an order if the tsunami source is located on the distance up to 1000 km from the coastal location. Both factors wave attenuation and wave height distribution should be taken into account in the planned warning system for the Caribbean Sea.

Kozelkov, A. S.; Kurkin, A. A.; Pelinovsky, E. N.; Zahibo, N.

2004-12-01

231

NSF/Tokyo Report: Victoria Land Coast Expedition  

NSF Publications Database

Title: NSF/Tokyo Report: Victoria Land Coast Expedition Date: December 2, 1997 The National Science ... Scientific Report #97-38 (November 19, 1997) VICTORIA LAND COAST EXPEDITION The following report was ...

232

Marine Harvest Refugia for West Coast Rockfish: A Workshop.  

National Technical Information Service (NTIS)

Partial Contents: Marine Harvest Refugia for West Coast Rockfish: An Introduction to the Workshop; Concepts Relevant to the Design and Evaluation of Fishery Reserves; Design Principles for Rockfish Reserves on the U.S. West Coast; Evaluating Marine Harves...

M. Yoklavich

1998-01-01

233

78 FR 30780 - Fisheries Off West Coast States; Modifications of the West Coast Commercial Salmon Fisheries...  

Federal Register 2010, 2011, 2012, 2013

...Modifications of the West Coast Commercial Salmon Fisheries; Inseason Action 3 AGENCY...announces one inseason action in the ocean salmon fisheries. This inseason action modified...2013 annual management measures for ocean salmon fisheries (78 FR 25865, May 3,...

2013-05-23

234

78 FR 70509 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 12...announces 23 inseason actions in the ocean salmon fisheries. These inseason actions modified the commercial and recreational salmon fisheries in the area from the...

2013-11-26

235

77 FR 65329 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 22 through...announces 5 inseason actions in the ocean salmon fisheries. These inseason actions modified...2012 annual management measures for ocean salmon fisheries (77 FR 25915, May 2,...

2012-10-26

236

76 FR 17033 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 1, 2...announces four inseason actions in the ocean salmon fisheries. Inseason action 1 modified...in effect until the opening of the 2011 salmon season announced in the 2011...

2011-03-28

237

78 FR 50347 - Fisheries Off West Coast States; Modifications of the West Coast Commercial Salmon Fisheries...  

Federal Register 2010, 2011, 2012, 2013

...Modifications of the West Coast Commercial Salmon Fisheries; Inseason Actions 6 Through...announces six inseason actions in the ocean salmon fisheries. These inseason actions modified...2013 annual management measures for ocean salmon fisheries (78 FR 25865, May 3,...

2013-08-19

238

75 FR 54791 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 9, 10...announces three inseason actions in the ocean salmon fisheries. Inseason actions 9 and...effect until the closing date of the 2010 salmon season announced in the 2010 annual...

2010-09-09

239

77 FR 55426 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 4 through...announces 11 inseason actions in the ocean salmon fisheries. These inseason actions modified...2012 annual management measures for ocean salmon fisheries (77 FR 25915, May 2,...

2012-09-10

240

77 FR 61728 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 15 through...announces 7 inseason actions in the ocean salmon fisheries. These inseason actions modified...2012 annual management measures for ocean salmon fisheries (77 FR 25915, May 2,...

2012-10-11

241

77 FR 22682 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 1, 2...announces 3 inseason actions in the ocean salmon fisheries. These inseason actions modified...2011 annual management measures for ocean salmon fisheries (76 FR 25246, May 4,...

2012-04-17

242

75 FR 44925 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 1, 2...announces four inseason actions in the ocean salmon fisheries. Inseason action 1 modified...effect until the closing date of the 2010 salmon season announced in the 2010 annual...

2010-07-30

243

78 FR 24360 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 1 and...announces two inseason actions in the ocean salmon fisheries. These inseason actions modified...2012 annual management measures for ocean salmon fisheries (77 FR 25915, May 2,...

2013-04-25

244

78 FR 35153 - Fisheries Off West Coast States; Modifications of the West Coast Commercial Salmon Fisheries...  

Federal Register 2010, 2011, 2012, 2013

...Modifications of the West Coast Commercial Salmon Fisheries; Inseason Actions 4 and...announces two inseason actions in the ocean salmon fisheries. These inseason actions modified...2013 annual management measures for ocean salmon fisheries (78 FR 25865, May 3,...

2013-06-12

245

76 FR 79122 - Magnuson-Stevens Act Provisions; Fisheries Off West Coast States; Pacific Coast Groundfish...  

Federal Register 2010, 2011, 2012, 2013

...charter boat fleets targeting lingcod and bottomfish in deep water ocean areas off the Washington south coast and Columbia River...slightly increased for darkblotched rockfish, Pacific ocean perch, widow rockfish and yelloweye rockfish....

2011-12-21

246

75 FR 37744 - Fisheries off West Coast States; Pacific Coast Groundfish Fishery Management Plan; Amendments 20...  

Federal Register 2010, 2011, 2012, 2013

...rationalization program for the Pacific Coast groundfish fishery. Amendment 21 would establish fixed allocations for limited entry (LE) trawl participants. DATES: Effective June 10, 2010. FOR FURTHER INFORMATION CONTACT: Jamie Goen,...

2010-06-30

247

United States Coast Pilot 2, Atlantic Coast: Cape Cod to Sandy Hook. Thirteenth Edition. January 1978.  

National Technical Information Service (NTIS)

Coast Pilots supplement the navigation information shown on the nautical charts and are based upon field inspections conducted by the National Ocean Survey, information published in Notices to Mariners, and the reports from NOAA survey vessels, other Gove...

1978-01-01

248

78 FR 54801 - Gulf Coast Restoration Trust Fund  

Federal Register 2010, 2011, 2012, 2013

...CFR Part 34 RIN 1505-AC44 Gulf Coast Restoration Trust Fund AGENCY: Office of the Fiscal...amounts deposited in the Gulf Coast Restoration Trust Fund, which was established in...administer RESTORE Act programs and carry out restoration activities in the Gulf Coast...

2013-09-06

249

33 CFR 173.35 - Coast Guard validation sticker.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Coast Guard validation sticker. 173.35 Section 173...Numbering § 173.35 Coast Guard validation sticker. No person may operate...by the Coast Guard unless it has the validation sticker issued with the...

2013-07-01

250

46 CFR 50.10-25 - Coast Guard Symbol.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Coast Guard Symbol. 50.10-25 Section 50.10-25 Shipping...This Subchapter § 50.10-25 Coast Guard Symbol. (a) The term Coast Guard Symbol means that impression stamped on...

2013-10-01

251

33 CFR 125.12 - Period of validity of Coast Guard Port Security Cards.  

Code of Federal Regulations, 2013 CFR

...of validity of Coast Guard Port Security Cards. 125.12 Section 125...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES...of validity of Coast Guard Port Security Cards. (a) The Coast...

2013-07-01

252

Living With the Coast of Alaska  

NASA Astrophysics Data System (ADS)

Living with the Coast of Alaska is one of 20 books in the “Living with the Shore” series. It covers a wide range of Alaskan coastal settings, including the ice-stressed shores of the low-relief, desert-like, high Arcticsemi; the coasts of the vast Bering Seasemi; the barren volcanic islands of the Aleutian chainsemi; and south central and southeastern Alaska with their high mountains, large glaciers, steep-sided fjords, heavy precipitation, and active tectonism. Even for the well-seasoned Alaskan, this book offers an education in the incredible diversity of this state's coastal zone.Treating such a broad topic with its multitude of coastal hazards must have been difficult in comparison with other areas covered in the series. But it wasaccomplished quite well through the assistance of experts on coastal hazards and hazard mitigation in construction.

Reimnitz, Erk

253

Developments in Louisiana Gulf Coast in 1975  

Microsoft Academic Search

The Louisiana Gulf Coast region consists of the 38 southern parishes of Louisiana and the 21 Outer Continental Shelf areas extending out to a water depth of 6,500 ft (2,000 m). There were 1,957 exploratory and development wells drilled in the region in 1975, an increase of 13.5 percent over 1974. The success ratio for exploratory wells was 21 percent,

E. W. Lueck; J. E. Sandt

1976-01-01

254

Open ocean Internal Waves, Namibia Coast, Africa.  

NASA Technical Reports Server (NTRS)

These open ocean Internal Waves were seen off the Namibia Coast, Africa (19.5S, 11.5E). The periodic and regularly spaced sets of incoming internal appear to be diffracting against the coastline and recombining to form a network of interference patterns. They seem to coincide with tidal periods about 12 hours apart and wave length (distance from crest to crest) varies between 1.5 and 5.0 miles and the crest lengths stretch beyond the image.

1990-01-01

255

WEST COAST REGIONAL CARBON SEQUESTRATION PARTNERSHIP  

SciTech Connect

The West Coast Regional Carbon Sequestration Partnership is one of seven partnerships which have been established by the US Department of Energy (DOE) to evaluate carbon dioxide capture, transport and sequestration (CT&S) technologies best suited for different regions of the country. The West Coast Region comprises Arizona, California, Nevada, Oregon, Washington, and the North Slope of Alaska. Led by the California Energy Commission, the West Coast Partnership is a consortium of over thirty five organizations, including state natural resource and environmental protection agencies; national labs and universities; private companies working on CO{sub 2} capture, transportation, and storage technologies; utilities; oil and gas companies; nonprofit organizations; and policy/governance coordinating organizations. In an eighteen month Phase I project, the Partnership will evaluate both terrestrial and geologic sequestration options. Work will focus on five major objectives: (1) Collect data to characterize major CO{sub 2} point sources, the transportation options, and the terrestrial and geologic sinks in the region, and compile and organize this data via a geographic information system (GIS) database; (2) Address key issues affecting deployment of CT&S technologies, including storage site permitting and monitoring, injection regulations, and health and environmental risks (3) Conduct public outreach and maintain an open dialogue with stakeholders in CT&S technologies through public meetings, joint research, and education work (4) Integrate and analyze data and information from the above tasks in order to develop supply curves and cost effective, environmentally acceptable sequestration options, both near- and long-term (5) Identify appropriate terrestrial and geologic demonstration projects consistent with the options defined above, and create action plans for their safe and effective implementation A kickoff meeting for the West Coast Partnership was held on Sept 30-Oct.1. Contracts were then put into place with twelve organizations which will carry out the technical work required to meet Partnership objectives.

Larry Myer; Terry Surles; Kelly Birkinshaw

2004-01-01

256

Micropropagation of Coast Redwood (Sequoia Sempervirens)  

Microsoft Academic Search

Sequoia sempervirens (Lamb.) Endl., coast redwood, is a long-lived evergreen gymnosperm belonging to the family Taxodiaceae. This species is endemic\\u000a to the coastal regions of California and Oregon, USA (Srinivasan & Friis, 1989; Ma et al., 2005). The fossil records of the\\u000a genus Sequoia can be traced back to the Jurassic Period, in China (Endo, 1951). The tree is characterized

S. S. KORBAN; I.-W. SUL

257

Tritium level along Romanian Black Sea Coast  

SciTech Connect

Establishing the tritium level along the Romanian Black Sea Coast, after 10 years of exploitation of the nuclear power plant from Cernavoda, is a first step in evaluating its impact on the Black Sea ecosystem. The monitoring program consists of tritium activity concentration measurement in sea water and precipitation from Black Sea Coast between April 2005 and April 2006. The sampling points were spread over the Danube-Black Sea Canal - before the locks Agigea and Navodari, and Black Sea along the coast to the Bulgarian border. The average tritium concentration in sea water collected from the sampling locations had the value of 11.1 {+-} 2.1 TU, close to tritium concentration in precipitation. Although an operating nuclear power plant exists in the monitored area, the values of tritium concentration in two locations are slightly higher than those recorded elsewhere. To conclude, it could be emphasized that until now, Cernavoda NPP did not had any influence on the tritium concentration of the Black Sea Shore. (authors)

Varlam, C.; Stefanescu, I.; Popescu, I.; Faurescu, I. [National Inst. for Cryogenic and Isotopic Technologies, PO Box 10, Rm. Valcea, 24050 (Romania)

2008-07-15

258

West Coast and Alaska Tsunami Warning Center  

NSDL National Science Digital Library

This site is the homepage of the National Oceanic and Atmospheric Administration's (NOAA) tsunami warning center for Alaska and the west coast of the United States. Users can access current tsunami information through an interactive map that shows the latest events and information statements. Rolling over the map symbols provides the date and time, location, and preliminary magnitude of earthquakes. Clicking on them provides access to additional information, including a statement of whether a tsunami is expected. There are also links to previous warning messages, Really Simple Syndication (RSS) feeds with headlines, links to documents and brief information; publications; and links to related sites with additional information.

2010-11-12

259

Central and North Gulf Coast, Texas  

NASA Technical Reports Server (NTRS)

In this view of the central and north Gulf Coast of Texas (30.0N, 96.0W), San Antonio Bay, Matagorda Bay and Galveston/Trinity Bay are clearly seen though small sediment plumes at the tidal passes are visible. The large field patterns of irrigated agriculture highlights an ancient deltaic plain formed by the Colorado and Brazos Rivers. Many manmade lakes and reservoirs, as far west as Lake Belton and Lake Waco and as far east as Toledo Bend are visible.

1992-01-01

260

3. AERIAL VIEW TO NORTH OF NORTH PART OF COAST ...  

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

3. AERIAL VIEW TO NORTH OF NORTH PART OF COAST GUARD AIR STATION SAN FRANCISCO, SHOWING PAN AMERICAN WORLD AIRWAYS HANGAR IN BACKGROUND. 8X10 black and white silver gelatin print. United States Coast Guard Official Photograph, 12th District, File No. 62751-21 A.S. Date unknown. - U.S. Coast Guard Air Station San Francisco, 1020 North Access Road, San Francisco, San Francisco County, CA

261

76 FR 68349 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 5 Through...announces 22 inseason actions in the ocean salmon fisheries. These inseason actions modified...effect until the closing date of the 2011 salmon season announced in the 2011 annual...

2011-11-04

262

75 FR 75638 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 12 and...announces two inseason actions in the ocean salmon fisheries. Inseason action 12 modified...effect until the closing date of the 2010 salmon season announced in the 2010 annual...

2010-12-06

263

75 FR 75639 - Fisheries Off West Coast States; Modifications of the West Coast Commercial and Recreational...  

Federal Register 2010, 2011, 2012, 2013

...West Coast Commercial and Recreational Salmon Fisheries; Inseason Actions 14 and...announces two inseason actions in the ocean salmon fisheries. Inseason action 14 modified...effect until the closing date of the 2010 salmon season announced in the 2010 annual...

2010-12-06

264

78 FR 18879 - Fisheries Off West Coast States; Pacific Coast Groundfish Fishery; Trawl Rationalization Program...  

Federal Register 2010, 2011, 2012, 2013

...at-sea mothership fishery ``for further consideration.'' The order...those associated with office space. Revenues are from West Coast...340,000). A total of 41 out of 65 permits will see a change...share ($189,000). Twelve out of 17 processing plants...

2013-03-28

265

United States Coast Pilot 2. Atlantic Coast: Cape Cod to Sandy Hook, Fourteenth Edition.  

National Technical Information Service (NTIS)

The National Ocean Survey Coast Pilots are a series of nine nautical books that cover a wide variety of information important to navigators of U.S. coastal and intracoastal waters, and the waters of the Great Lakes. Most of this book information cannot be...

1979-01-01

266

View of Mediterranean coast of France  

NASA Technical Reports Server (NTRS)

A vertical view of the Mediterranean coast of France is seen in this Skylab 3 Earth Resources Experiments Package S190-B (five-inch earth terrain camera) photograph taken from the Skylab space station in Earth orbit. This view includes the port cities of Marseilles (near center) and Toulon (far right). The mouth of the Rhone River is on the left. The irregular L-shaped inland body of water is Etang de Berre and is connected to the sea by a narrow canal. The city of Martiques is on the inland side of the canal. Cloud formations form narrow bands or streets along the coast east of Martiques and over the water. Cultural features such as major highways are indicated by thin white lines. Harbor facilities (wharves) and inner city patterns are distinctive in Marseilles and Toulon. The light tan areas in the regions inland from the major cities represent farming communities. The patterns are well shown in the vicinity of the Rhone River. The geology of the region is complex as illustrated by

1973-01-01

267

Phytoplankton off the West Coast of Africa  

NASA Technical Reports Server (NTRS)

Just off the coast of West Africa, persistent northeasterly trade winds often churn up deep ocean water. When the nutrients in these deep waters reach the ocean's surface, they often give rise to large blooms of phytoplankton. This image of the Mauritanian coast shows swirls of phytoplankton fed by the upwelling of nutrient-rich water. The scene was acquired by the Medium Resolution Imaging Spectrometer (MERIS) aboard the European Space Agency's ENVISAT. MERIS will monitor changes in phytoplankton across Earth's oceans and seas, both for the purpose of managing fisheries and conducting global change research. NASA scientists will use data from this European instrument in the Sensor Intercomparison and Merger for Biological and Interdisciplinary Oceanic Studies (SIMBIOS) program. The mission of SIMBIOS is to construct a consistent long-term dataset of ocean color (phytoplankton abundance) measurements made by multiple satellite instruments, including the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) and the Moderate-Resolution Imaging Spectroradiometer (MODIS). For more information about MERIS and ENVISAT, visit the ENVISAT home page. Image copyright European Space Agency

2002-01-01

268

Black Students in "Ivory Towers."  

ERIC Educational Resources Information Center

Interviews with 50 black adult students in British universities revealed their experience of racism in curriculum and staffing. They constructed informal support networks for themselves and were skeptical about the legitimacy of institutional knowledge and their expectations of employment. Although colleges emphasize widening access…

Allen, Paul

1997-01-01

269

Ivory Towers and Note Cards.  

ERIC Educational Resources Information Center

This paper argues that more cooperation is needed between scholars and librarians. Toward this end, we need first to produce more literary scholars who are truly skilled in librarianship, and second, we need to produce more librarians who are true scholars. Some library-oriented professors give copies of their lesson plans to the reference…

Patterson, Margaret C.

270

Charles' Law and Ivory Soap  

NSDL National Science Digital Library

This activity is a 2 part lab activity where students record properties of various bars of soap, and make models of molecules as they are cooled or heated. Students develop a new experiment changing one variable.

Thill, Nancy

271

The Ivory Tower Under Siege.  

ERIC Educational Resources Information Center

Increasing public dissatisfaction with the cost and quality of higher education is creating pressure for fundamental change. Higher education is not as certain to produce a higher standard of living as it used to be, and costs are rising faster than the rate of inflation. Declining state contributions to higher education have shifted the financial…

Smith-Mello, Michal

272

Alone in the Ivory Tower  

ERIC Educational Resources Information Center

The authors use data from the 2000 Census Public Use Microdata Sample to examine the likelihood of a birth event, defined as the household presence of a child younger than 2 years, for male and female professionals. Physicians have the highest rate of birth events, followed in order by attorneys and academics. Within each profession men have more…

Wolfinger, Nicholas H.; Goulden, Marc; Mason, Mary Ann

2010-01-01

273

50 CFR 226.210 - Central California Coast Coho Salmon (Oncorhynchus kisutch), Southern Oregon/Northern California...  

Code of Federal Regulations, 2013 CFR

...false Central California Coast Coho Salmon (Oncorhynchus kisutch), Southern Oregon/Northern California Coasts Coho Salmon (Oncorhynchus kisutch). 226...210 Central California Coast Coho Salmon (Oncorhynchus kisutch ),...

2013-10-01

274

50 CFR 226.210 - Central California Coast Coho Salmon (Oncorhynchus kisutch), Southern Oregon/Northern California...  

Code of Federal Regulations, 2010 CFR

...false Central California Coast Coho Salmon (Oncorhynchus kisutch), Southern Oregon/Northern California Coasts Coho Salmon (Oncorhynchus kisutch). 226...210 Central California Coast Coho Salmon (Oncorhynchus kisutch ),...

2010-10-01

275

50 CFR 226.210 - Central California Coast Coho Salmon (Oncorhynchus kisutch), Southern Oregon/Northern California...  

Code of Federal Regulations, 2011 CFR

...false Central California Coast Coho Salmon (Oncorhynchus kisutch), Southern Oregon/Northern California Coasts Coho Salmon (Oncorhynchus kisutch). 226...210 Central California Coast Coho Salmon (Oncorhynchus kisutch ),...

2011-10-01

276

50 CFR 226.210 - Central California Coast Coho Salmon (Oncorhynchus kisutch), Southern Oregon/Northern California...  

Code of Federal Regulations, 2012 CFR

...false Central California Coast Coho Salmon (Oncorhynchus kisutch), Southern Oregon/Northern California Coasts Coho Salmon (Oncorhynchus kisutch). 226...210 Central California Coast Coho Salmon (Oncorhynchus kisutch ),...

2012-10-01

277

Rainfall variability over the East African coast  

NASA Astrophysics Data System (ADS)

The coastal region of Kenya and Tanzania experiences two rainy seasons per year (October-November-December (OND) and March-April-May (MAM)) and has an economy that is highly dependent on and vulnerable to the amounts and timing of rainfall during these seasons. Most of the interannual variability in OND seasonal rainfall totals relate to El Niño Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) events. While these relationships are fairly well documented and understood, there is a relatively poor understanding of the timing and intensity of the rainfall during ENSO/IOD seasons. In an attempt to improve understanding on this topic, daily rainfall station data, dekad and seasonal satellite rainfall estimates and Normalized Difference Vegetation Index (NDVI) imagery are analyzed for two recent OND seasons with El Niño conditions. These are OND 2006 which was characterized by devastating floods over the region and 2009 when the magnitude and spatial extent of the above average rainfall patterns were smaller. Daily rainfall data for the Tanzanian coastal stations showed that Tanga and Dar es Salaam (north and central coast) experienced few dry spells and several relatively intense wet spells during OND 2006 whereas at Mtwara, on the south coast, there were two very intense wet spells and a number of dry spells during the season. In OND 2009, only the north coast (Tanga) experienced above average rainfall, comprised of three wet spells with the one about a month after the beginning of the season being very intense. These data highlight the complexity of the rainfall distributions in the coastal region. A shift of the Walker circulation over coastal East Africa with strong uplift there seemed to be responsible for the very wet conditions during OND 2006. The marine air mass being advected from the western tropical Indian Ocean towards East Africa contained more moisture than average. Similar, but weaker, horizontal circulation anomalies occurred in OND 2009 along with increased moisture over the coastal zone although there was no obvious shift in the Walker circulation in this season.

Gamoyo, Majambo; Reason, Chris; Obura, David

2014-05-01

278

33 CFR 23.20 - Coast Guard commission pennant.  

Code of Federal Regulations, 2013 CFR

... Coast Guard commission pennant. The Coast Guard commission pennant shall have the union part composed of thirteen blue stars in a horizontal line on a white field, one-fourth the length of the pennant; the remaining three-fourths shall...

2013-07-01

279

Tsunami Hazards Along the Chinese Coast from Potential Earthquakes  

Microsoft Academic Search

The recent Indonesian earthquake has awakened great concerns about destructive hazards along the Chinese coast. Scientists have provided a clear record of past tsunamis along East China that clearly indicate the potential for future tsunami damage to China. In this work we will assess from analyzing the probability for tsunami waves to hit the Chinese coast in the next century

Y. Liu; A. Santos; Y. Shi; M. Wang; D. A. Yuen

2006-01-01

280

Locally generated tsunamis recorded on the coast of British Columbia  

Microsoft Academic Search

This study presents analyses and numerical simulations of local tsunamis generated by two recent earthquakes off the coast of British Columbia. The Queen Charlotte Islands earthquake (Mw = 6.1) on 12 October 2001 generated waves that were recorded by tide gauges at Bamfield, Tofino, Winter Harbour and Port Hardy on the coast of Vancouver Island, with maximum measured wave heights

Alexander B. Rabinovich; Richard E. Thomson; Vasily V. Titov; Fred E. Stephenson; Garry C. Rogers

2008-01-01

281

Tides and tidal currents along the Okhotsk coast of Hokkaido  

Microsoft Academic Search

The development and propagation of the diurnal tidal currents along the Okhotsk coast of Hokkaido is made clear using newly obtained data. the diurnal currents are generated at the Soya Strait by the difference of the tidal amplitude and phase between the Sea of Okhotsk and the Japan Sea, and propagate as the shelf waves trapped along the coast. As

Minoru Odamaki

1994-01-01

282

Programming Practices of Atlantic Coast Conference Wind Ensembles  

ERIC Educational Resources Information Center

This study examined the programming trends of the elite wind bands/ensembles of the Atlantic Coast Conference universities. Using survey techniques previously employed by Powell (2009) and Paul (2010; in press), we contacted the directors of the Atlantic Coast Conference band programs and requested concert programs from their top groups for the…

Wiltshire, Eric S.; Paul, Timothy A.; Paul, Phyllis M.; Rudnicki, Erika

2010-01-01

283

The Marine Terraces of the Northeast Coast of Tanganyika.  

National Technical Information Service (NTIS)

The coast of Tanganyika provides an ideal situation for the study of changing land position and changing sea level as these complexly related circumstances combine to form marine terraces. The field work along the north-eastern Tanganyikian coast was unde...

C. S. Alexander

1968-01-01

284

Coastal profile modeling along the Russian Arctic coast  

Microsoft Academic Search

A morphodynamic model previously developed to predict the evolution of sedimentary coasts is extended to compare the effects of abrasion and thermal-abrasion processes on Arctic coasts. It is concluded that under the same storm impact, an unfrozen abrasion cliff loses almost the same sediment volume and retreats at almost the same rate as a thermal-abrasion cliff of corresponding effective height.

I. O. Leont'yev

2004-01-01

285

Regional Industry Workforce Development: The Gulf Coast Petrochemical Information Network  

ERIC Educational Resources Information Center

The Gulf Coast Petrochemical Information Network (GC-PIN) is a workforce development partnership among industry businesses and area institutions of higher education in the four-county Gulf Coast region. GC-PIN partners develop new industry-specific curricula, foster industry career awareness, and retrain existing employees in new technologies.

Hodgin, Johnette; Muha, Susan

2008-01-01

286

Impacts of Climate Change on the Coasts of Washington State  

Microsoft Academic Search

Abstract Climate change on the Washington coast will trigger significant physical and chemical stressors: (a) inundation of low-lying areas by high tides as sea level rises; (b) flooding of coasts during major storm events, especially near river mouths; (c) accelerated erosion of coastal bluffs; (d) shifting of beach profiles, moving the position of the Mean High Water line landward; (e)

Daniel D. Huppert; Amber Moore; Karen Dyson

287

Is sea level rise larger near the coast?  

Microsoft Academic Search

Satellite altimeter data from the last two decades put the estimate for present-day global mean sea level rise at 3 mm\\/year. But how important is the global figure if we only see the impact at the coast line? It is hence prudent to ask: What is the sea level rise near the coast? Is it different from the global number,

R. Scharroo; E. W. Leuliette; L. Miller

2009-01-01

288

46 CFR 107.117 - Coast Guard addresses.  

Code of Federal Regulations, 2013 CFR

...a) For approval by Commandant (CG-CVC)âAttn: Office of Commercial Vessel Compliance, U.S. Coast Guard...For approval by Commandant (CG-ENG)âAttn: Office of Design and Engineering Systems, U.S. Coast Guard...

2013-10-01

289

33 CFR 334.1480 - Vieques Passage and Atlantic Ocean, off east coast of Puerto Rico and coast of Vieques Island...  

Code of Federal Regulations, 2013 CFR

...coast of Puerto Rico and coast of Vieques Island; naval restricted areas. 334.1480...coast of Puerto Rico and coast of Vieques Island; naval restricted areas. (a) The...shoreline along the west end of Vieques Island extending from Caballo Point on...

2013-07-01

290

Shell, Chevron keep East Coast alive  

SciTech Connect

The possibilities for oil and gas discoveries on the US East Coast are discussed. From 48 wells drilled since 1975, all have been dry. But operators think they'll have better luck by going deeper and farther offshore. Shell is using the offshore drill-ship Discoverer Seven Seas to drill off Virginia in 6448 ft of water. This well involves the following for the first time on the Atlantic OCS Region: remotely operated vehicles; air canister lower riser joints with flooding capability; long-base dynamic positioning system; instrumented riser point; and riser-dump valve to prevent riser collapse in the event of drilling fluid loss. A sand body, composed of sand and sandstone interbedded with black shale beds, recently discovered in the Atlantic continental rise is described.

Not Available

1984-01-01

291

Clinical practice development in Central Coast Health.  

PubMed

Engagement in clinical practice development may be achieved in a range of ways. In this paper we describe the formation of a strategic plan for clinical practice development for Central Coast Health. The plan specifically builds on the work that has already been achieved by clinicians and is inclusive of the multi-disciplinary team. In order to clarify the strategic direction, three levels of clinical practice development are offered as examples of increasingly intensive clinical practice development. In the strategic plan senior personnel are recruited to support area-wide developments. At the same time clinicians are supported to work on specific local projects creating a simultaneous top-down and bottom-up approach. Preparation of clinicians for the challenges of team building and change in practice ensures that people choosing to engage in clinical practice have realistic expectations of the commitment and rewards that may be expected. PMID:14582944

FitzGerald, Mary; Solman, Annette

2003-07-01

292

US Coast Guard differential GPS network  

SciTech Connect

In order to aid navigation and to prevent disasters such as oil spills, collisions, and wrecks of vessels and aircraft, the US Coast Guard is charged with establishing, maintaining, and operating electronic aids to navigation. In a technological advance developed and operated by the Department of Defense, the global positioning system (GPS) provides all-weather global coverage, 24 hours/day at unprecedented accuracies. GPS provides standard positioning service (SPS) and precise positioning service (PPS). By applying differential techniques to GPS, navigational accuracies of better than 10 meters can be achieved. For the first time, an all-weather system is possible to meet all the marine navigator's needs including harbor and harbor approach navigation. This should revolutionize navigation safety and efficiency, surveying operations, search and rescue operations, and underwater mine disposal efficiency and safety.

Alsip, D.H.; Butler, J.M.; Radice, J.T.

1993-03-01

293

Gulf Coast Addiction Technology Transfer Center  

NSDL National Science Digital Library

Based at the University of Texas at Austin, the Gulf Coast Addiction Technology Transfer Center (GCATTC) is one of 14 such regional university centers in the United States. The Center's work includes creating high-quality training materials for health care professionals, convening research conferences, and providing technical assistance to state agencies and providers. On the website, visitors can learn about research projects, pilot programs for transforming mental health service delivery programs, and work on the abuse of prescription drugs. The left-hand side of the page includes sections like Grant Writing, Products, and Offender Education Programs. In the Products area, visitors can look over publications and presentations by Center staff and also view a list of resources for treatment of substance use disorders.

2012-01-01

294

FACTS: The Florida Atlantic Coast Transport Study  

NASA Astrophysics Data System (ADS)

As a result of concerns expressed by the State of Florida regarding possible effects from oil, gas, and mineral mining activities that result from the July 1983 lease sale in the offing of the southeastern United States, a 2-year physical oceanographic study has been initiated off the Florida east coast. The program is supported by the Minerals Management Service (MMS) of the U.S. Department of the Interior and is administered by the Florida Institute of Oceanography (FIO) at the University of Southern Florida, St. Petersburg. With pun intended, the program is known as FACTS and is nestled both in time and space between the NOAA/ONR-supported Subtropical Atlantic Climate Study (STACS) to the south [Molinari, 1983] and the MMS-supported South Atlantic Bight (SAB) program to the north [Lee, 1983]. The area of interest is shown in Figure 1.

Maul, George A.

295

Regional beach/cliff system dynamics along the california coast  

USGS Publications Warehouse

The coast of California is comprised of both sandy shorelines and cliffed coastline, and in many areas these features spatially coincide. In order to better understand the regional trends of change along the California coast, the U.S. Geological Survey is quantifying both sandy shoreline change and coastal cliff retreat for the state. The resulting database was used to examine the dynamics of the beach/cliff system. We found inconsistent evidence of a relationship between rates of cliff retreat and shoreline change on the spatial scale of 100-km cells. However, when the data are correlated within individual regions, a strong relationship exists between the geomorphology of the coast and the behavior of the beach/cliff system. Areas of high-relief coast show negative correlations, indicating that higher rates of cliff retreat correlate with lower rates of shoreline erosion. In contrast, low- to moderate-relief coasts show strong positive correlations.

Hapke, C. J.; Reid, D.

2007-01-01

296

40 CFR 408.190 - Applicability; description of the West Coast mechanized salmon processing subcategory.  

Code of Federal Regulations, 2010 CFR

...description of the West Coast mechanized salmon processing subcategory. 408.190...SOURCE CATEGORY West Coast Mechanized Salmon Processing Subcategory § 408.190...description of the West Coast mechanized salmon processing subcategory. The...

2010-07-01

297

40 CFR 408.190 - Applicability; description of the West Coast mechanized salmon processing subcategory.  

Code of Federal Regulations, 2013 CFR

...description of the West Coast mechanized salmon processing subcategory. 408.190...SOURCE CATEGORY West Coast Mechanized Salmon Processing Subcategory § 408.190...description of the West Coast mechanized salmon processing subcategory. The...

2013-07-01

298

40 CFR 408.190 - Applicability; description of the West Coast mechanized salmon processing subcategory.  

Code of Federal Regulations, 2010 CFR

...description of the West Coast mechanized salmon processing subcategory. 408.190...SOURCE CATEGORY West Coast Mechanized Salmon Processing Subcategory § 408.190...description of the West Coast mechanized salmon processing subcategory. The...

2009-07-01

299

3 CFR - National Policy for the Oceans, Our Coasts, and the Great Lakes  

Code of Federal Regulations, 2010 CFR

...the Oceans, Our Coasts, and the Great Lakes Presidential Documents Other...the Oceans, Our Coasts, and the Great Lakes Memorandum for the Heads of...The oceans, our coasts, and the Great Lakes provide jobs, food,...

2010-01-01

300

78 FR 59249 - Revisions to the California State Implementation Plan, South Coast Air Quality Management District  

Federal Register 2010, 2011, 2012, 2013

...Implementation Plan, South Coast Air Quality Management District AGENCY: Environmental...revisions to the South Coast Air Quality Management District (SCAQMD) portion...Reference. (A) South Coast Air Quality Management District. (1) Rule...

2013-09-26

301

78 FR 18853 - Revision to the California State Implementation Plan, South Coast Air Quality Management District  

Federal Register 2010, 2011, 2012, 2013

...Implementation Plan, South Coast Air Quality Management District AGENCY: Environmental...revision to the South Coast Air Quality Management District (SCAQMD) portion...F) South Coast Air Quality Management District. (1) Rule...

2013-03-28

302

75 FR 23212 - Security Zone; U.S. Coast Guard BSU Seattle, Pier 36, Seattle, WA  

Federal Register 2010, 2011, 2012, 2013

...discussed in the preamble, the Coast Guard proposes to amend 33 CFR Part...1334 Security Zone; U.S. Coast Guard BSU Seattle, Pier 36, Elliot...within this security zone, contact United States Coast Guard Sector Seattle Joint Harbor...

2010-05-03

303

40 CFR 408.190 - Applicability; description of the West Coast mechanized salmon processing subcategory.  

Code of Federal Regulations, 2011 CFR

...description of the West Coast mechanized salmon processing subcategory. 408.190...SOURCE CATEGORY West Coast Mechanized Salmon Processing Subcategory § 408.190...description of the West Coast mechanized salmon processing subcategory. The...

2011-07-01

304

40 CFR 408.190 - Applicability; description of the West Coast mechanized salmon processing subcategory.  

Code of Federal Regulations, 2012 CFR

...description of the West Coast mechanized salmon processing subcategory. 408.190...SOURCE CATEGORY West Coast Mechanized Salmon Processing Subcategory § 408.190...description of the West Coast mechanized salmon processing subcategory. The...

2012-07-01

305

Characteristics of an open coast tidal flat: Example from Daman, west coast of India  

Microsoft Academic Search

This study highlights lithofacies and biofacies characteristics of the open coast tidal flat near Daman on the eastern flank\\u000a of Gulf of Khambhat. Sedimentological and biological observation record six facies within the tidal flat area including older\\u000a beach, beach face, sand flat, mud flat\\/mixed flat, sand bar and beach rock. Distinct sedimentary structures, foraminiferal\\u000a assemblage and bioturbation intensity characterize each

Sourav Saha; Anupam Ghosh; Santanu Banerjee; Pratul K. Saraswati; Stuart D. Burley

2011-01-01

306

Rock coast geomorphology: Recent advances and future research directions  

NASA Astrophysics Data System (ADS)

There have been considerable advances in rock coast research in the past decade, as measured in terms of the number of active researchers and in the number of research papers being produced. This review, although not exhaustive, highlights many of the improvements that have been made in our ability to identify and measure the processes shaping rock coasts, at a range of spatial and temporal scales. We review how researchers are experimenting with new techniques; grappling with quantifying the effects of multiple processes on resultant landforms; and exploring how well rock coast systems relate to wider geomorphological and earth science debates. Recent research, including those in this special issue, aptly demonstrate the scientific benefits that can be accrued by studying rock coasts at a variety of spatial and temporal scales, by considering the effect of the wide range of processes that operate on them, and by the application of new measurement techniques and approaches. Despite these advances, there is ample scope for future research, which could profit from increasing collaboration with other coastal geomorphologists and allied earth science disciplines in order to identify and quantify linkages between rock coasts and other coastal systems. It is also important that new research considers how rock coasts will respond to extreme events and to risks associated with changing climate, and to how rock coast geomorphology might contribute, beyond coastal science, to wider debates in theoretical geomorphology.

Naylor, L. A.; Stephenson, W. J.; Trenhaile, A. S.

2010-01-01

307

Studying changes of ice coasts in the European Arctic  

NASA Astrophysics Data System (ADS)

The present extent of European ice coasts, their spatial changes in the past 50 years and the velocities of ice flow in marginal parts of tidewater glaciers were determined and mapped at a regional scale using space-borne image data, both optical and radar. The methods of satellite photogrammetry and radar interferometry provided efficient solutions to the integral estimation of ice-coast dynamics in the Franz Josef Land, Novaya Zemlya and Svalbard archipelagos. Studies revealed significant degradation of the ice coasts (-7.7% by length) compared to the situation represented in the available maps. The results obtained in the laboratory were verified during several field campaigns.

Sharov, Aleksey I.

2005-06-01

308

Uptake and Elimination of Poliovirus by West Coast Oysters  

PubMed Central

Accumulation of poliovirus Lsc-2ab by West Coast oysters was determined by using a stationary seawater system, and depuration was determined by using both stationary and free-flow systems. Results indicate that these shellfish have the same pattern of accumulation and localization of viruses as do East Coast species. However, uptake appeared to occur more rapidly than described for East Coast shellfish. There appeared to be a gradual diffusion of virus from the digestive area into the body. Depuration was found to occur more rapidly and completely under free-flow conditions than in a stationary system.

Girolamo, Rudolph Di; Liston, John; Matches, J.

1975-01-01

309

15. GENERAL VEW FROM SOUTHWEST SHOWING BLUFF, COAST GUARD'S HOUSE, ...  

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

15. GENERAL VEW FROM SOUTHWEST SHOWING BLUFF, COAST GUARD'S HOUSE, WARDEN'S HOUSE AND RUBBLE IN FOREGROUND - Alcatraz, Cell House, Alcatraz Island, San Francisco Bay, San Francisco, San Francisco County, CA

310

Scientists Explore Large Gas Hydrate Field off Oregon Coast  

NSF Publications Database

... Oregon Coast Details emerge of possible new energy source Ocean Drilling Program (ODP) scientists ... may eventually serve as a major new worldwide energy source. Among the most surprising findings of ...

311

PARTS WASHING ALTERNATIVES STUDY - UNITED STATES COAST GUARD  

EPA Science Inventory

This report has been written to assist the United States Coast Guard (USCG) industrial managers in determining the most cost effective and environmentally acceptable parts washing alternatives for their specific applications. n evaluation was conducted on four different cleaners ...

312

Improving Shipboard Supply Management in the Coast Guard.  

National Technical Information Service (NTIS)

The development of supply management policy has historically been centralized at Coast Guard Headquarters but technical direction and execution have been decentralized. The three inventory control points receive technical direction from the Headquarter's ...

G. L. Slyman A. J. Colaianni M. J. Sakowski D. Frank

1987-01-01

313

50 CFR 600.1102 - Pacific Coast groundfish fee.  

Code of Federal Regulations, 2013 CFR

...FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MAGNUSON-STEVENS ACT PROVISIONS Specific Fishery or Program Fishing Capacity Reduction Regulations § 600.1102 Pacific Coast...

2013-10-01

314

Pacific Coast Torpedo Station, Keyport Industrial District, Both sides of ...  

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

Pacific Coast Torpedo Station, Keyport Industrial District, Both sides of Second Street, between Dedrick Drive and Liberty Bay and one building west of Dedrick Drive and south of Second Street, Keyport, Kitsap County, WA

315

INTERIOR RADIO BEACON ROOM, LOOKING NORTHEAST. Oregon Inlet Coast ...  

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

INTERIOR RADIO BEACON ROOM, LOOKING NORTHEAST. - Oregon Inlet Coast Guard Station, Northern end of Pea Island, East side of State Road 1257, 0.3 mile North of North Carolina Highway 12, Rodanthe, Dare County, NC

316

Gulf Coast to California Pipeline Feasibility Study. Commission Report.  

National Technical Information Service (NTIS)

The California Energy Commission prepared this report to summarize its investigation of the feasibility of a new or expanded pipeline for delivery of additional transportation fuel supplies to California from the U.S. Gulf Coast. The California Legislatur...

J. H. Leonard

2003-01-01

317

Atlantic Coast Unique Regional Atmospheric Tracer Experiment (ACURATE).  

National Technical Information Service (NTIS)

The Atlantic Coast Unique Regional Atmospheric Tracer Experiment (ACURATE) is a program designed to obtain data necessary to evaluate atmospheric transport and diffusion models used to calculate regional population doses caused by nuclear facility emissio...

J. F. Schubert J. L. Heffter G. A. Mead

1983-01-01

318

A Selected Bibliography of the Nearshore Environment: Florida West Coast.  

National Technical Information Service (NTIS)

A collection of over 2,900 references on ecological and coastal engineering subjects related to the nearshore environment of the Florida west coast. References are grouped by subject and alphabetized by author within each subject heading.

C. H. Saloman

1975-01-01

319

50 CFR 660.50 - Pacific Coast treaty Indian fisheries.  

Code of Federal Regulations, 2013 CFR

...Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND...fishing areas within the fishery management area (FMA) are set...Pacific Coast treaty Indian fisheries management measures. Trip...

2013-10-01

320

CONTROLS ON WATER CHEMISTRY OF AN OREGON COAST RANGE STREAM  

EPA Science Inventory

Numerous factors may control losses of dissolved nutrients from forested basins in the Oregon Coast Range. Potentially important factors include forest composition, stand age, forest management, grazing, agriculture, sewage inputs and bedrock types, as well as others perhaps not...

321

A Coastal Hazards Data Base for the US West Coast  

NSDL National Science Digital Library

A new article is available online from the Carbon Dioxide Information Analysis Center (CDIAC). A Coastal Hazards Data Base for the US West Coast, discusses the "contents of a digital data base that may be used to identify coastlines along the U.S. West Coast that are at risk to sea-level rise." Data published in this article is presented in ASCII text and/or can be read using a FORTRAN 77 data-retrieval routine

322

Phytoplankton bloom all along the coast of Southeast United States  

NASA Technical Reports Server (NTRS)

All along the eastern and southern coasts of the United States, marine plants seem impervious to the onslaught of winter weather further north. In this true-color image from January 9, 2002, phytoplankton can be seen growing in the nation's coastal waters; their characteristic blue-green swirls are especially visible off the west coast of Florida. Fire locations are marked with red dots. Credit: Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC

2002-01-01

323

Equilibrium responses of cliffed coasts to changes in the rate of sea level rise  

Microsoft Academic Search

Basic formulae have long been used to predict the effects of sea-level rise on coastal recession; for instance, the geometric ‘Bruun rule’ (and its modifications) has often been applied to sandy coasts, both low-lying and steep. However, the behavior of rocky coasts, whether strongly or poorly lithified, should be significantly different than that of sandy coasts given that rocky coast

Andrew D. Ashton; Mike J. A. Walkden; Mark E. Dickson

2011-01-01

324

Ekman transport along the Galician Coast (NW, Spain) calculated from QuikSCAT winds  

Microsoft Academic Search

Ekman transport is studied close to the Galician coast by means of wind data provided by the QuikSCAT satellite from November 1999 to October 2005. Three different coastal zones are identified, western coast from Miño River to Cape Finisterre, middle coast from Cape Finisterre to Cape Ortegal and northern coast, from Cape Ortegal to Cape Peñas. In addition to existence

I. Alvarez; M. Gomez-Gesteira; M. deCastro; E. M. Novoa

2008-01-01

325

Oceanic Loading Eect near the European Coast  

NASA Astrophysics Data System (ADS)

The dissipation, anisotropy, and rotation constraints of the total oceanic gravimetric effect are analysed. The dependence of the results on the selected P- and S-velocity model (i.e., on the structure of the crust and upper mantle of the Earth) is considered. For calculating the effect of oceanic loading, we apply the method of Legendre polynomial expansion of tidal heights. The CSR3 model data are expanded up to the 720th order. The results yielded by this method closely agree with those calculated from the Green's functions by the LOAD07 program of the ETERNA software. Remarkable advantage of our program over other approaches is that it provides high-speed processing and does not require introducing the near-field formalism. Application of the pre-computed expansions reduces the time of calculations by two orders of magnitude, compared to LOAD07. This is particularly important when analyzing the geographical distributions of the loading effect predicted by different models. Taking dissipation into account improves the total gravimetric effect calculated for the M2 wave near the coast of Europe by 0.1-0.2 mcGal in amplitude and by a few hundredths of degree in phase. Transition from the PREM model to the IASP91 model which is better suitable for Europe changes the model predictions by 0.1-0.4 mcGal in amplitude and by 0.1 to 5-7 degrees in phase. Thus, allowance for dissipation together with the use of the refined data on the crustal and upper-mantle structure of the Earth may contribute, at places, over 0.5 mcGal to the amplitude and a few degrees to the phase of the total oceanic gravimetric effect. In this relation, particular attention should be paid to the regions about the Land's End cape (Cape Cornwall) and Cape Saint Mathieu.

Spiridonov, E.; Vinogradova, O.; Boyarskiy, E.; Afanasieva, L.

2012-04-01

326

Mysterious Black Water off Florida's Gulf Coast  

NASA Technical Reports Server (NTRS)

In mid-December last year, a mysterious black water overtook the normally bluish green waters of Florida Bay. Over the course of the winter, the extent of the water grew to encompass an area as big as Lake Okeechobee, Florida, before subsiding over the last few weeks. These images taken by the Sea-viewing Wide Field-of-View Sensor (SeaWiFS), flying aboard the Orbview-2 satellite, show the progression of the black water over the last three months. The affected water sits along the southeastern coast of Florida about fifty miles north of the Florida Keys. As of now, scientists do not know why the water appears black in satellite and aerial images or whether the water is harming the wildlife. They speculate that it could be due to an exotic algae bloom, an underwater fountain pushing up sediments from the ocean floor, or possibly chemical and sediment run-off from the nearby Shark River. Researchers at the Florida Marine Research Institute in St. Petersburg and the Mote Marine Research Institute in Sarasota are running tests to determine the chemical make-up of the water. No big fish kills have been reported in the area. But fishermen say the catch has been low this winter. In addition, the black water sits just north of the Florida Keys National Marine Sanctuary, which is home to one of the largest coral reef habitats in the United States. Toxic run-off from the Florida coastline and motor boats in the area have already destroyed many of Florida's reefs. Scientists are concerned that if the extent of the black water grows again, it could endanger these reefs. Information provided by the Naples Daily News. For up-to-date images of the area, view these SeaWiFS Images of Florida Bay. Image courtesy the SeaWiFS Project, NASA/Goddard Space Flight Center, and ORBIMAGE

2002-01-01

327

Coast-to-Coast Record of the Paleocene-Eocene Thermal Maximum in Shallow Marine Environments  

NASA Astrophysics Data System (ADS)

The Paleocene-Eocene Thermal Maximum (PETM) is characterized by rapid global warming, as much as 8° C, and a negative excursion in carbon isotopes (CIE). The magnitude of the CIE indicates rapid transfer of a large mass of carbon to the atmosphere. The rise in temperature associated with the addition of this greenhouse gas appears to have also altered global humidity and precipitation patterns, a feature often best expressed in near shore depositional facies. One goal of this study is to complement the deep-sea climate record with near shore, shallow-water records of regional climate change. We present sedimentologic, fossil, and geochemical data from three shallow-marine sections, one from the U.S. Pacific margin (Lodo formation, now exposed in the mountains of Central California), and two from the U.S. Atlantic Coastal Plain in New Jersey (drill sites at Bass River and Wilson Lake). Stable isotope analyses of foraminifera indicate that the magnitude of the isotopic excursion is globally similar to that in the deep-sea, although detail observations suggest that the excursion in bulk carbonate values in NJ sections is somewhat larger at the base of the CIE (??13C=~4-6‰), particularly inshore, than what is typically measured in the deep sea (??13C=~3‰). Carbonate dissolution may be truncating the excursion recorded in pelagic records. However, given the discrepancy between bulk and the foraminiferal data, we suspect that either diagenesis and/or vital effects and/or season-dependent intensification of the hydrological cycle and nutrient input may be contributing to more negative values in the bulk ?13C in shallow marine sections. We also find that ?13C of marine organic matter in each of these sections records the CIE, a particularly useful feature in sections containing few calcareous microfossils (due to dissolution or dilution). The magnitude of the excursion in these records is similar to the bulk carbonate record. Finally, clay mineral analysis indicate that kaolinite fluxes increased on both coasts at the onset of the CIE. Previous works have shown that on the U.S. East Coast this increase lasted for the duration of the CIE, and we document here that for the West Coast the increase was short-lived and corresponded to a single spike in the kaolinite to smectite ratio.

John, C. M.; Bohaty, S. M.; Sluijs, A.; Brinkhuis, H.; Zachos, J. C.

2005-12-01

328

Gulf Coast, Shaded Relief and Colored Height  

NASA Technical Reports Server (NTRS)

[figure removed for brevity, see original site] [figure removed for brevity, see original site] Figure 1Figure 2

The topography of the Gulf Coast states is well shown in this color-coded shaded relief map generated with data from the Shuttle Radar Topography Mission. The image on the top (see Figure 1) is a standard view showing southern Louisiana, Mississippi, Alabama and the panhandle of Florida. Green colors indicate low elevations, rising through yellow and tan, to white at the highest elevations.

For the view on the bottom (see Figure 2), elevations below 10 meters (33 feet) above sea level have been colored light blue. These low coastal elevations are especially vulnerable to flooding associated with storm surges. Planners can use data like these to predict which areas are in the most danger and help develop mitigation plans in the event of particular flood events.

Elevation data used in this image were acquired by the Shuttle Radar Topography Mission aboard the Space Shuttle Endeavour, launched on Feb. 11, 2000. SRTM used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour in 1994. SRTM was designed to collect 3-D measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter (approximately 200-foot) mast, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between NASA, the National Geospatial-Intelligence Agency (NGA) of the U.S. Department of Defense and the German and Italian space agencies. It is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif., for NASA's Science Mission Directorate, Washington, D.C.

Location: 31 degrees north latitude, 88 degrees west longitude Orientation: North toward the top, Mercator projection Size: 702 by 433 kilometers (435 by 268 miles) Image Data: shaded and colored SRTM elevation model Date Acquired: February 2000

2004-01-01

329

29 CFR Appendix B to Subpart B of... - Reprint of U.S. Coast Guard Regulations Referenced in Subpart B, for Determination of Coast Guard...  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Reprint of U.S. Coast Guard Regulations Referenced...Appendix B to Subpart B of Part 1915âReprint of U.S. Coast Guard Regulations Referenced...Persons This appendix provides a complete reprint of U.S. Coast Guard regulations...

2010-07-01

330

29 CFR Appendix B to Subpart B of... - Reprint of U.S. Coast Guard Regulations Referenced in Subpart B, for Determination of Coast Guard...  

Code of Federal Regulations, 2010 CFR

...2009-07-01 2009-07-01 false Reprint of U.S. Coast Guard Regulations Referenced...Appendix B to Subpart B of Part 1915âReprint of U.S. Coast Guard Regulations Referenced...Persons This appendix provides a complete reprint of U.S. Coast Guard regulations...

2009-07-01

331

Coastal processes and longshore sediment transport along Kundapura coast, central west coast of India  

NASA Astrophysics Data System (ADS)

Longshore sediment transport (LST) is one of the main factors influencing coastal geomorphology. This study examines the variation in the LST estimate using four well known formulae and the sensitivity of wave parameters on LST determination. The study was done along the Kundapura coast, central west coast of India. The Delft3D-wave module was used for obtaining the nearshore wave characteristics from the wave data measured using Datawell directional wave rider buoy at 12 m water depth for a period of one year. Diurnal change and seasonal variation in LST were examined. The study shows that the net LST was toward north for most of the time (non-monsoon period) during the year when predominant wave direction was between SWS and SW, whereas the LST was toward south during the monsoon season when the wave direction was from the west. It was found that the influence of breaker height was more during the non-monsoon period whereas during the monsoon period, breaker angle shows more influence on LST. Estimated annual net LSTR for the region is 3.6, 3.0, 1.6, and 2.6 × 105 m3 based on the CERC, Walton and Bruno, Kamphuis and Komar formulae. The LSTR estimate based on the Kamphuis formula, which also includes the wave period, beach slope, and sediment grain size, was found to be a reliable estimate for the study region. The variation in LSTR estimate considering different data intervals was also examined and found that the difference in monthly LSTR for data intervals of 6, 12 and 24 h with respect to the 3 h interval was up to 11, 13 and 24%. For better and more accurate estimates of LSTR, the data interval should be 3 h or less.

Shanas, P. R.; Sanil Kumar, V.

2014-06-01

332

Correlation between coastal geomorphology and tsunami inundation along the coast of Kanyakumari, India  

NASA Astrophysics Data System (ADS)

An investigation has been carried out in the vicinity of the coastal villages of Kanyakumari District, India to decode the influence of coastal geomorphology on inundation degree and run-up level. Even though the tsunami waves approach the study area in different patterns, the consequences are found to be mainly dependent upon the coastal configuration and local geographic setting, the study area are considered to be of three types based upon the geomorphic arrangement, namely shallow coast, elevated coast and estuarine coast. The inundation and run-up level vary from coast to coast even though there is no remarkable variation in the intensity of the approaching tsunami surge. The inundation extent ranges from to 54 m to 413 m with maximum along estuarine coast and minimum along elevated coast. Estuarine coast recorded the maximum run-up level of about 6 m and the minimum of about 1 m along the elevated coast. The percentage of inundated area in the total coastal area varies between 19% to 10% along estuarine coast and elevated coast respectively. Inundation and run-up level cannot be appreciable in the inland along the elevated coast. The beaches of elevated coast are less affected whereas those of estuarine coast are highly affected. Inundation is limited in the elevated beaches along the study area.

Chandrasekar, N.; Saravanan, S.; Rajamanickam, M.; Hentry, C.; Rajamanickam, G. V.

2012-03-01

333

Tsunami forecast for Bulgarian coasts of the Black Sea  

NASA Astrophysics Data System (ADS)

Tsunami hazard in the Black Sea is considered low to moderate but not negligible. At present, New European Tsunami Catalogue counts 29 historical tsunami events in the Black Sea, 22 of which are considered as reliable. Four of them affected Bulgarian coast including a strong earthquakes event 544/545 of offshore Varna. Here we discuss a forecast of possible tsunami wave heights at Bulgarian coasts of the Black Sea. In order to do that, prognostic numerical simulations of 55 tsunami events in the Baltic Sea has been performed. All tsunami sources are uniformly distributed in the Black Sea basin. The results of prognostic numerical simulations are compared with the results of numerical modelling of two instrumentally measured historical events (1939 and 1966) and with the data of instrumental measurements. On this basis a preliminary forecast of tsunami wave heights along the Bulgarian coast of the Black Sea is given.

Didenkulova, Ira; Zaitsev, Andrey; Pelinovsky, Efim; Ranguelov, Boyko

2013-04-01

334

Probabilistic Forecast of Tsunami Hazards along Chinese Coast  

NASA Astrophysics Data System (ADS)

There is indeed a potential non-negligible threat for Chinese coast from tsunamogenic earthquakes originating at the neighboring subducting plate boundaries of Eurasian plate and Philippine sea plate: Manila trench and the Okinawa trough. This finding comes from our newly devised method for determining the probabilistic forecast of tsunami hazard (PFTH), which finds this probability distribution from direct numerical simulation of the waves excited by hypothetical earthquakes in these zones. There are significant differences in the bottom bathymetry between the South China Sea bordering the southern province of Guangdong and the East China Sea and Yellow Sea adjacent to the provinces of Zhejiang, Jiangsu, and Shandong. We have verified that the linear shallow-water equations can be employed to predict with sufficient accuracy the travel time of tsunami waves in the South China Sea, while the nonlinear shallow-water equations must be used for the shallower seas next to the northern Chinese provinces. Distribution for the possibility of tsunami waves with above 2.0 m hitting the coast has been shown in eastern China sea area, the delta region of the Yangzi River, the north-eastern coast of Zhejiang province, and northern Taiwan island. The distribution has also been displayed in South China Sea area, along the southeastern coast of mainland and Southwestern Taiwan. In this century the probability of a wave with a height of over 2.0 m to hit Hong Kong and Macau is about 10.0%, 0.5% for Shanghai, 3.2% for Wenzhou, and 7.2% for Keelung. Cities on eastern Chinese coast are less vulnerable than those on the southern Chinese coast. We also have discussed the prospects of tsunamis coming from large earthquakes along the Manila trench and the Ryukyu-Kyushu arc region to the north, as they can impact many countries in Southeast Asia, besides China.

Liu, Yingchun; Shi, Yaolin; Sevre, Erik O. D.; Xing, Huilin; Yuen, David A.

335

40 CFR 408.180 - Applicability; description of the West Coast hand-butchered salmon processing subcategory.  

Code of Federal Regulations, 2010 CFR

...description of the West Coast hand-butchered salmon processing subcategory. 408.180...CATEGORY West Coast Hand-Butchered Salmon Processing Subcategory § 408.180...description of the West Coast hand-butchered salmon processing subcategory. The...

2009-07-01

336

40 CFR 408.180 - Applicability; description of the West Coast hand-butchered salmon processing subcategory.  

Code of Federal Regulations, 2013 CFR

...description of the West Coast hand-butchered salmon processing subcategory. 408.180...CATEGORY West Coast Hand-Butchered Salmon Processing Subcategory § 408.180...description of the West Coast hand-butchered salmon processing subcategory. The...

2013-07-01

337

40 CFR 408.180 - Applicability; description of the West Coast hand-butchered salmon processing subcategory.  

Code of Federal Regulations, 2010 CFR

...description of the West Coast hand-butchered salmon processing subcategory. 408.180...CATEGORY West Coast Hand-Butchered Salmon Processing Subcategory § 408.180...description of the West Coast hand-butchered salmon processing subcategory. The...

2010-07-01

338

78 FR 16630 - Clean Air Act Grant: South Coast Air Quality Management District; Opportunity for Pubic Hearing  

Federal Register 2010, 2011, 2012, 2013

...Act Grant: South Coast Air Quality Management District; Opportunity for...funds for the South Coast Air Quality Management District (SCAQMD) in support...programs of the South Coast Air Quality Management District. The shortfall...

2013-03-18

339

77 FR 42653 - United States Navy Restricted Area, SUPSHIP Gulf Coast Detachment Mobile at AUSTAL, USA, Mobile...  

Federal Register 2010, 2011, 2012, 2013

...Engineers 33 CFR Part 334 United States Navy Restricted Area, SUPSHIP Gulf Coast Detachment...Conversion and Repair, United States Navy (USN), Gulf Coast (SUPSHIP Gulf Coast...SUPSHIP Bath). The Department of the Navy requested an amendment to the...

2012-07-20

340

76 FR 39245 - Privacy Act of 1974: Implementation of Exemptions; Department of Homeland Security/U.S. Coast...  

Federal Register 2010, 2011, 2012, 2013

...Coast Guard--008 Courts Martial Case Files System of Records; Correction AGENCY...Coast Guard--008 Courts Martial Case Files System of Records'' from certain provisions...Coast Guard -008 Courts Martial Case Files System of Records'' from certain...

2011-07-06

341

40 CFR 408.260 - Applicability; description of the Atlantic and Gulf Coast hand-shucked oyster processing...  

Code of Federal Regulations, 2013 CFR

...description of the Atlantic and Gulf Coast hand-shucked oyster processing subcategory...SOURCE CATEGORY Atlantic and Gulf Coast Hand-Shucked Oyster Processing Subcategory...description of the Atlantic and Gulf Coast hand-shucked oyster processing...

2013-07-01

342

40 CFR 408.250 - Applicability; description of the Pacific Coast hand-shucked oyster processing subcategory.  

Code of Federal Regulations, 2013 CFR

...Applicability; description of the Pacific Coast hand-shucked oyster processing subcategory...PROCESSING POINT SOURCE CATEGORY Pacific Coast Hand-Shucked Oyster Processing Subcategory...Applicability; description of the Pacific Coast hand-shucked oyster processing...

2013-07-01

343

77 FR 37318 - Eighth Coast Guard District Annual Safety Zones; Sound of Independence; Santa Rosa Sound; Fort...  

Federal Register 2010, 2011, 2012, 2013

...Eighth Coast Guard District Annual Safety Zones; Sound of Independence; Santa Rosa Sound; Fort Walton Beach, FL AGENCY: Coast Guard...Coast Guard will enforce a Safety Zone for the Sound of Independence event in the Santa Rosa...

2012-06-21

344

40 CFR 408.180 - Applicability; description of the West Coast hand-butchered salmon processing subcategory.  

Code of Federal Regulations, 2011 CFR

...description of the West Coast hand-butchered salmon processing subcategory. 408.180...CATEGORY West Coast Hand-Butchered Salmon Processing Subcategory § 408.180...description of the West Coast hand-butchered salmon processing subcategory. The...

2011-07-01

345

40 CFR 408.180 - Applicability; description of the West Coast hand-butchered salmon processing subcategory.  

Code of Federal Regulations, 2012 CFR

...description of the West Coast hand-butchered salmon processing subcategory. 408.180...CATEGORY West Coast Hand-Butchered Salmon Processing Subcategory § 408.180...description of the West Coast hand-butchered salmon processing subcategory. The...

2012-07-01

346

76 FR 57871 - Approval of Air Quality Implementation Plans; California; South Coast; Attainment Plan for 1997 8...  

Federal Register 2010, 2011, 2012, 2013

...Implementation Plans; California; South Coast; Attainment Plan for...2010, approving the 2009 South Coast Air Quality Monitoring...combustion gases to process streams. General Preamble at 13523...General Preamble at 13524. The South Coast 2007 AQMP does not...

2011-09-16

347

United States Coast Guard Emergency Underwater Escape Rebreather Evaluation.  

National Technical Information Service (NTIS)

The United States Coast Guard (USCG) Emergency Underwater Escape Rebreather (UER) was evaluated at the Navy Experimental Diving Unit. Physiologic testing in the dry laboratory, monitoring breath-to-breath O2 and CO2 levels, delineated the factors used in ...

C. G. Gray E. O. Thalmann R. Syklawer

1981-01-01

348

Sound Advice: How To Live in Harmony with Our Coast.  

ERIC Educational Resources Information Center

Most people tend to take coastal areas for granted, but, if steps are not taken now to improve the quality of the water from the mountains to the coast, it may someday be unfit for human use. Following a statement of the reasons for such concern are 13 chapters discussing various aspects of water conservation. Chapter titles include: (1) "Erosion…

North Carolina Coastal Federation, Inc. Newport.

349

Trammel nets’ ghost fishing off the Portuguese central coast  

Microsoft Academic Search

The loss of fishing gear has negative consequences to marine communities if the gear preserves its catching abilities for a significant period, a phenomenon called “ghost fishing”. The present study assessed the impact of lost trammel nets in both sandy and rocky bottoms in the central area of the Portuguese coast. Ten trammel nets, each 50m long and corresponding to

Filipa Baeta; Maria José Costa; Henrique Cabral

2009-01-01

350

Habitat Suitability Index Models: Northern Pintail (Gulf Coast Wintering).  

National Technical Information Service (NTIS)

A review and synthesis of existing information were used to develop a model for evaluating wintering habitat quality for northern pintail (Anas acuta) along the Gulf of Mexico coast. The model is scaled to produce an index between 0 (unsuitable habitat) a...

R. J. Howard H. A. Kantrud

1986-01-01

351

North-South Migration of West Coast Low Pressure Centers  

ERIC Educational Resources Information Center

Monthly maps of low pressure centers are presented here to attempt a concrete representation that may help students to understand the seasonal change from dry months to wet months along the mid-latitude west coast as a seasonal north-south migration of factors controlling rain and drought. (Author/JH)

McIntosh, C. Barron

1974-01-01

352

The East Coast Migrant Health Project: Lighting the Way  

ERIC Educational Resources Information Center

East Coast Migrant Health Project has made major contributions to the health of the migrant over the past seven years and is constantly seeking new means for expanding these services. The devoted and mobile staff aim to provide as many social and educational services as are available in the areas visited by the migrants. (Author/NQ)

Ramirez, Patricia C.

1977-01-01

353

Investigating Sand on the Coast of Oregon and Washington.  

ERIC Educational Resources Information Center

Describes factors affecting sand composition and distribution along coastlines. Uses variations in sand types along the Oregon coast to illustrate the influences of sand grain density, wave action, and headlands on sand movements. Describes the seasonal movement of sand across beaches. (DLH)

Komar, Paul D.

2002-01-01

354

NASA'S Coastal and Ocean Airborne Science Testbed (COAST): Early Results  

NASA Astrophysics Data System (ADS)

The NASA Coastal and Ocean Airborne Science Testbed (COAST) project advances coastal ecosystems research and ocean color calibration and validation capability by providing a unique airborne payload optimized for remote sensing in the optically complex coastal zone. The COAST instrument suite combines a customized imaging spectrometer, sunphotometer system, and a new bio-optical radiometer package to obtain ocean/coastal/atmosphere data simultaneously in flight for the first time. The imaging spectrometer (Headwall) is optimized in the blue region of the spectrum to emphasize remote sensing of marine and freshwater ecosystems. Simultaneous measurements supporting empirical atmospheric correction of image data is accomplished using the Ames Airborne Tracking Sunphotometer (AATS-14). Coastal Airborne In situ Radiometers (C-AIR, Biospherical Instruments, Inc.), developed for COAST for airborne campaigns from field-deployed microradiometer instrumentation, will provide measurements of apparent optical properties at the land/ocean boundary including optically shallow aquatic ecosystems. Ship-based measurements allowed validation of airborne measurements. Radiative transfer modeling on in-water measurements from the HyperPro and Compact-Optical Profiling System (C-OPS, the in-water companion to C-AIR) profiling systems allows for comparison of airborne and in-situ water leaving radiance measurements. Results of the October 2011 Monterey Bay COAST mission include preliminary data on coastal ocean color products, coincident spatial and temporal data on aerosol optical depth and water vapor column content, as well as derived exact water-leaving radiances.

Guild, L. S.; Dungan, J. L.; Edwards, M.; Russell, P. B.; Morrow, J. H.; Kudela, R. M.; Myers, J. S.; Livingston, J.; Lobitz, B.; Torres-Perez, J.

2012-12-01

355

Estuarine Sedimentation Along the Natal Coast, South Africa.  

National Technical Information Service (NTIS)

The character and materials of sedimentation in estuaries and lagoons along the 570 km Natal Coast are described and analyzed. Sites examined include the Greater St. Lucia lagoon system with its 9 major contributing rivers, Richards Bay with its 2 main co...

A. R. Orme

1974-01-01

356

East Coast gas discovery buoys New Zealand prospects  

SciTech Connect

A Denver independent appears to have established New Zealand`s first commercial hydrocarbons production outside the Taranaki basin. Completion of a dry gas well at Wairoa near the eastern shore of the North Island opens pay in the East Coast basin. The paper describes recent drilling, geology, New Zealand ratings, exploration shifts, 1998 drilling, and Mangahewa gas.

NONE

1998-05-18

357

Remote Sensing of Mangrove Change Along the Tanzania Coast  

Microsoft Academic Search

This article contributes to the understanding of the changes in distribution and total area of mangrove forests along the mainland Tanzania coast over the past decade. Mangroves are recognized as critical coastal habitat requiring protection and special attention. The Tanzania coastline forms a suitable habitat for establishment of mangrove forests. Mangrove forests are distributed from Tanga in the north to

Yeqiao Wang; Gregory Bonynge; Jarunee Nugranad; Michael Traber; Amani Ngusaru; James Tobey; Lynne Hale; Robert Bowen; Vedast Makota

2003-01-01

358

Elevated East Coast Sea Level Anomaly: June - July 2009.  

National Technical Information Service (NTIS)

CO-OPS stations recorded higher than normal sea levels (SL) along the U.S. East Coast in June and July 2009. Near-peak levels in the latter half of June coincided with a perigean-spring tide, an extreme predicted tide when the moon is closest to the Earth...

C. Zervas S. Gill W. Sweet

2009-01-01

359

US COAST GUARD/EPA EMERGENCY RESPONSE TEAM JURISDICTIONAL BOUNDARY  

EPA Science Inventory

This line coverage represents the United States Coast Guard(USCG)/Environmental Protection Agency, Region 9 Geographic/Jurisdictional Boundary located in California. The boundary was determined from the text description provided in the U.S. Environmental Protection Agency Region...

360

Sequence architecture of Lower Cretaceous carbonate shelf, Gulf Coast  

Microsoft Academic Search

Cretaceous carbonate shelves in the Gulf Coast and the Chihuahua trough in Arizona record both eustatic and tectonic events. The Lower Cretaceous Comanche shelf in Texas and Louisiana consists of five major depositional\\/seismic sequences. The regionally extensive bounding surfaces of each sequence are either drowning unconformities or exposure unconformities. Drowning is inferred where shallow shelf facies are overlain by deeper

1990-01-01

361

Greenland: Short Pan to East Coast Area of Interest  

NSDL National Science Digital Library

This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm-year) along the coast and increased slightly in the center (+2 cm-year). Researchers view this as yet another serious warning sign of the threat of global warming.

Perkins, Lori; Krabill, William; Manizade, Serdar

2000-06-25

362

Greenland: Pan to West Coast Area of Interest  

NSDL National Science Digital Library

This animation shows the ice concentration in Greenland. The ice has decreased significantly (~50 cm-year) along the coast and increased slightly in the center (+2 cm-year). Researchers view this as yet another serious warning sign of the threat of global warming.

Perkins, Lori; Krabill, William; Manizade, Serdar

2000-06-25

363

Anomalous Cold Water Detected along Mid-Atlantic Coast  

Microsoft Academic Search

In July 2003, anomalous cold water along the mid-Atlantic coast affected local tourism and fishing. The cold water interfered with tuna fishing, and for 2 to 3 weeks, rockfish generally found during the fall were present in the area. Satellite data, buoy observations, and weather maps were analyzed to investigate the cause of this cold water event. The results show

Donglian Sun; Zhong Liu; Long Chiu; Ruixin Yang; Ramesh P. Singh; Menas Kafatos

2004-01-01

364

Seakeeping Characteristics of a United States Coast Guard Buoy Tender.  

National Technical Information Service (NTIS)

Seakeeping experiments conducted with a model of a United States Coast Guard Buoy tender are described, and the results thereof are presented. It is shown that the in-transit performance of the buoy tender will be limited by deck wetness. It is further sh...

N. K. Bales

1975-01-01

365

Wind speed forecasting in the South Coast of Oaxaca, México  

Microsoft Academic Search

Comparison of two techniques for wind speed forecasting in the South Coast of the state of Oaxaca, Mexico is presented in this paper. The Autoregressive Integrated Moving Average (ARIMA) and the Artificial Neural Networks (ANN) methods are applied to a time series conformed by 7 years of wind speed measurements. Six years were used in the formulation of the models

Erasmo Cadenas; Wilfrido Rivera

2007-01-01

366

Evaluation of tsunami vulnerability along northeast coast of India  

NASA Astrophysics Data System (ADS)

The Sumatra tsunami of 26 December 2004 with a moment magnitude of 9.3 Mw caused colossal damage to the south-southeastern Indian coast and Andaman-Nicobar group of Islands. However, the northeastern coastline bordering the northwestern Bay of Bengal remained unaffected although a tidal station located in the region recorded the highest water level (~2.5 m) for the entire east coast of India on the eventful day. As a part of hazard mitigation and planning for the northeastern coast, four major settlements, viz., Gopalpur, Puri, Paradip and Digha were evaluated for tsunami vulnerability. Inundation and run-up scenarios were generated for Bay of Bengal earthquake sources such as Arakan-1762, Car Nicobar-1881, North Andaman-1941 and Sumatra 2004 using TUNAMI N2 model. The paper describes computed run-up heights and landward inundation for 20-25 km coastal stretch with different geomorphologies and topographical characteristics. Simulation results indicate that the model is able to generate a comparable run-up of 2-4.5 m for 2004 Sumatra event for Paradip region while at other locations of the coastline, it was largely unnoticed as the inundation remained within the beach limit; however water entered inland mainly through the waterways and inundated low-lying areas. It is concluded that northeast coast of India is relatively safe from the tsunami originating in Bay of Bengal region.

Mishra, Pravakar; Usha, Tune; Ramanamurthy, M. V.

2014-05-01

367

In Search of Optimal Harvest Rates for West Coast Groundfish  

Microsoft Academic Search

In this paper, I explore how patterns of compensatory mortality, as assessed through stock-recruitment relationships, may influence optimal harvest rates and relative yields for several West Coast groundfish stocks. To do this, I revisited Clark's (1991) groundfish life history model and maximin (i.e., maximize the minimum) yield approach to evaluate target harvest rates for five stocks (Dover sole Microstomus pacificus

Jon Brodziak

2002-01-01

368

In Search of Optimal Harvest Rates for West Coast Groundfish  

Microsoft Academic Search

In this paper, I explore how patterns of compensatory mortality, as assessed through stock–recruitment relationships, may influence optimal harvest rates and relative yields for several West Coast groundfish stocks. To do this, I revisited Clark's (1991) groundfish life history model and maximin (i.e., maximize the minimum) yield approach to evaluate target harvest rates for five stocks (Dover sole Microstomus pacificus,

Jon Brodziak

2002-01-01

369

Estimation of Tsunami Risk for the Caribbean Coast  

NASA Astrophysics Data System (ADS)

The tsunami problem for the coast of the Caribbean basin is discussed. Briefly the historical data of tsunami in the Caribbean Sea are presented. Numerical simulation of potential tsunamis in the Caribbean Sea is performed in the framework of the nonlinear-shallow theory. The tsunami wave height distribution along the Caribbean Coast is computed. These results are used to estimate the far-field tsunami potential of various coastal locations in the Caribbean Sea. In fact, five zones with tsunami low risk are selected basing on prognostic computations, they are: the bay "Golfo de Batabano" and the coast of province "Ciego de Avila" in Cuba, the Nicaraguan Coast (between Bluefields and Puerto Cabezas), the border between Mexico and Belize, the bay "Golfo de Venezuela" in Venezuela. The analysis of historical data confirms that there was no tsunami in the selected zones. Also, the wave attenuation in the Caribbean Sea is investigated; in fact, wave amplitude decreases in an order if the tsunami source is located on the distance up to 1000 km from the coastal location. Both factors wave attenuation and wave height distribution should be taken into account in the planned warning system for the Caribbean Sea. Specially the problem of tsunami risk for Lesser Antilles including Guadeloupe is discussed.

Zahibo, N.

2004-05-01

370

New records of marine choanoflagellates off the Chilean coast  

Microsoft Academic Search

This is the first report of planktonic choanoflagellates from the Chilean coast, relating their abundance with that of bacteria and viruses. Surface water samples were taken off Antofagasta, Montemar, and Puerto Montt and samples from ballast tanks were also analyzed. The choanoflagellates were identified following morphological type descriptions. Viruses and bacteria were stained with SYBR Green and choanoflagellates, bacteria, and

Katia Soto-Liebe; Gloria Collantes; Juan Kuznar

2007-01-01

371

Photocopy of measured drawing (from First Coast Guard District Office, ...  

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

Photocopy of measured drawing (from First Coast Guard District Office, John F. Kennedy Federal Building, Government Center, Boston, Massachusetts) designed by Edward P. Adams and Royal Luther, 1890 "PLAN FOR FRAMED DOUBLE DWELLING AT PORTLAND HEAD, ME., LIGHT STATION" - Portland Head Light, Portland Head, approximately 1/2 mile East of Shore Road, Cape Elizabeth, Cumberland County, ME

372

33 CFR 100.501 - Special Local Regulations; Marine Events in the Fifth Coast Guard District.  

Code of Federal Regulations, 2010 CFR

... Special Local Regulations; Marine Events in the Fifth Coast Guard...HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.501 Special Local Regulations; Marine Events in the Fifth Coast...

2009-07-01

373

33 CFR 100.906 - Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI.  

Code of Federal Regulations, 2013 CFR

...100.906 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.906 Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. (a)...

2013-07-01

374

33 CFR 100.1305 - Richland, Washington, west coast outboard championship hydro races.  

Code of Federal Regulations, 2013 CFR

...100.1305 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.1305 Richland, Washington, west coast outboard championship hydro...

2013-07-01

375

77 FR 476 - Endangered and Threatened Species; Recovery Plan Southern Oregon/Northern California Coast Coho...  

Federal Register 2010, 2011, 2012, 2013

...Oregon/ Northern California Coast Coho Salmon Evolutionarily Significant Unit AGENCY...Northern California Coast (SONCC) Coho Salmon (Oncorhynchus kisutch) Evolutionarily...Attn: Recovery Coordinator/SONCC Coho Salmon Public Draft Recovery Plan...

2012-01-05

376

Improved Inventory Models for the United States Coast Guard Requirements Determination Process.  

National Technical Information Service (NTIS)

Requirements determination is the process by which the Coast Guard supply system forecasts future customer demands and sets levels of inventory to satisfy those demands. Currently, the Coast Guard is in the process of modernizing its inventory-management ...

G. L. Slyman D. L. Zimmerman

1993-01-01

377

33 CFR 165.100 - Regulated Navigation Area: Navigable waters within the First Coast Guard District.  

Code of Federal Regulations, 2013 CFR

33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01... Regulated Navigation Area: Navigable waters within the First Coast Guard District...Section 165.100 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF...

2013-07-01

378

75 FR 61367 - Revisions to the California State Implementation Plan, South Coast Air Quality Management District  

Federal Register 2010, 2011, 2012, 2013

...California State Implementation Plan, South Coast Air Quality Management District AGENCY: Environmental Protection Agency...proposing to approve revisions to the South Coast Air Quality Management District (SCAQMD) portion of the California...

2010-10-05

379

77 FR 66780 - Revisions to the California State Implementation Plan, South Coast Air Quality Management District  

Federal Register 2010, 2011, 2012, 2013

...California State Implementation Plan, South Coast Air Quality Management District AGENCY: Environmental Protection Agency...proposing to approve revisions to the South Coast Air Quality Management District (SCAQMD) portion of the California...

2012-11-07

380

77 FR 13495 - Revisions to the California State Implementation Plan, South Coast Air Quality Management District  

Federal Register 2010, 2011, 2012, 2013

...California State Implementation Plan, South Coast Air Quality Management District AGENCY: Environmental Protection Agency...finalizing approval of revisions to the South Coast Air Quality Management District (SCAQMD) portion of the California...

2012-03-07

381

76 FR 72142 - Revisions to the California State Implementation Plan, South Coast Air Quality Management District  

Federal Register 2010, 2011, 2012, 2013

...California State Implementation Plan, South Coast Air Quality Management District AGENCY: Environmental Protection Agency...proposing to approve revisions to the South Coast Air Quality Management District portion of the California State...

2011-11-22

382

78 FR 18244 - Revisions to the California State Implementation Plan, South Coast Air Quality Management District  

Federal Register 2010, 2011, 2012, 2013

...California State Implementation Plan, South Coast Air Quality Management District AGENCY: Environmental Protection Agency...finalizing approval of revisions to the South Coast Air Quality Management District (SCAQMD) portion of the California...

2013-03-26

383

77 FR 52277 - Approval of Air Quality Implementation Plans; California; South Coast Air Quality Management...  

Federal Register 2010, 2011, 2012, 2013

...FRL-9721-3] Approval of Air Quality Implementation Plans; California; South Coast Air Quality Management District; Prevention of Significant...submitted for the South Coast Air Quality Management District (District)...

2012-08-29

384

75 FR 25775 - Disapproval of State Implementation Plan Revisions, South Coast Air Quality Management District  

Federal Register 2010, 2011, 2012, 2013

...Implementation Plan Revisions, South Coast Air Quality Management District AGENCY: Environmental Protection Agency...disapproval of a revision to the South Coast Air Quality Management District (SCAQMD) portion of the California...

2010-05-10

385

19 CFR 12.85 - Coast Guard boat and associated equipment safety standards.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 false Coast Guard boat and associated equipment safety standards...CLASSES OF MERCHANDISE Safety Standards for Boats and Associated Equipment § 12.85 Coast Guard boat and associated equipment safety...

2010-04-01

386

19 CFR 12.85 - Coast Guard boat and associated equipment safety standards.  

Code of Federal Regulations, 2010 CFR

...2009-04-01 2009-04-01 false Coast Guard boat and associated equipment safety standards...CLASSES OF MERCHANDISE Safety Standards for Boats and Associated Equipment § 12.85 Coast Guard boat and associated equipment safety...

2009-04-01

387

Coast Guard: Station Readiness Improving, but Resource Challenges and Management Concerns Remain.  

National Technical Information Service (NTIS)

For years, the Coast Guard has conducted search and rescue operations from its network of stations along the nations coasts and waterways. In 2001, reviews of station operations found that station readiness the ability to execute mission requirements in k...

2005-01-01

388

Biological Recovery Criteria for the Oregon Coast Coho Salmon Evolutionarily Significant Unit.  

National Technical Information Service (NTIS)

This document outlines biological recovery criteria (also called viability criteria) for the Oregon Coast Coho Salmon Evolutionarily Significant Unit (ESU) as identified in the NOAA Fisheries Service status review for West Coast coho salmon (Oncorhynchus ...

M. W. Chilcote P. W. Lawson T. C. Wainwright

2008-01-01

389

77 FR 14703 - Safety Zone, Temporary Change for Recurring Fireworks Display Within the Fifth Coast Guard...  

Federal Register 2010, 2011, 2012, 2013

...Display Within the Fifth Coast Guard District, Pamlico River and Tar River; Washington, NC AGENCY: Coast Guard, DHS. ACTION...restrict vessel traffic in a portion of the Pamlico River and Tar River near Washington, NC, during the...

2012-03-13

390

76 FR 13508 - Ninth Coast Guard District Sector Realignment; Northern Lake Michigan and Lake Huron  

Federal Register 2010, 2011, 2012, 2013

...Ninth Coast Guard District Sector Realignment; Northern Lake Michigan and Lake Huron AGENCY: Coast Guard, DHS. ACTION: Final Rule...reflect the realignment of boundaries shared among Sector Lake Michigan, Sector Detroit, and Sector Sault Ste....

2011-03-14

391

33 CFR 100.1305 - Richland, Washington, west coast outboard championship hydro races.  

Code of Federal Regulations, 2010 CFR

...false Richland, Washington, west coast outboard championship hydro races. 100.1305 Section 100.1305 Navigation and Navigable...1305 Richland, Washington, west coast outboard championship hydro races. (a) Regulated area. By this...

2010-07-01

392

33 CFR 100.1305 - Richland, Washington, west coast outboard championship hydro races.  

Code of Federal Regulations, 2010 CFR

...false Richland, Washington, west coast outboard championship hydro races. 100.1305 Section 100.1305 Navigation and Navigable...1305 Richland, Washington, west coast outboard championship hydro races. (a) Regulated area. By this...

2009-07-01

393

A stochastic model to analyse pelagic fishery resource dominance along the Karnataka coast (west coast of India)  

Microsoft Academic Search

Stochastic models are appropriate for the study of dynamics of fishery and prominent among them are Markov chain models. In this study, the dynamics of the pelagic fishery resource assemblage along the Karnataka coast is analyzed with reference to the change in resource composition and relative dominance using Markov chain. The transition probabilities of the species dominance with respect to

Somy Kuriakose; K. G. Mini

2006-01-01

394

75 FR 43021 - Stewardship of the Ocean, Our Coasts, and the Great Lakes  

Federal Register 2010, 2011, 2012, 2013

...the Ocean, Our Coasts, and the Great Lakes Memorandum of July 19, 2010...the Ocean, Our Coasts, and the Great Lakes By the authority vested in me as...The ocean, our coasts, and the Great Lakes provide jobs, food, energy...

2010-07-22

395

U.S. Coast Guard cutter personnel on Sweetbriar train their fire ...  

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

U.S. Coast Guard cutter personnel on Sweetbriar train their fire hoses on a burning pleasure boat in an Alaskan harbor. A U.S. Coast Guard rigid-hull inflatable helps with the fire-fighting effort - U.S. Coast Guard Cutter SWEETBRIER, Cordova, Valdez-Cordova Census Area, AK

396

33 CFR 165.100 - Regulated Navigation Area: Navigable waters within the First Coast Guard District.  

Code of Federal Regulations, 2010 CFR

...Navigation Area: Navigable waters within the First Coast Guard District. 165.100 Section...Navigation Areas and Limited Access Areas First Coast Guard District § 165.100 Regulated...Navigation Area: Navigable waters within the First Coast Guard District. (a)...

2010-07-01

397

33 CFR 165.100 - Regulated Navigation Area: Navigable waters within the First Coast Guard District.  

Code of Federal Regulations, 2010 CFR

...Navigation Area: Navigable waters within the First Coast Guard District. 165.100 Section...Navigation Areas and Limited Access Areas First Coast Guard District § 165.100 Regulated...Navigation Area: Navigable waters within the First Coast Guard District. (a)...

2009-07-01

398

78 FR 23135 - Safety Zone; Blue Water Resort & Casino West Coast Nationals; Parker, AZ  

Federal Register 2010, 2011, 2012, 2013

...USCG-2013-0095] RIN 1625-AA00 Safety Zone; Blue Water Resort & Casino West Coast Nationals...Colorado River in Parker, Arizona for the Blue Water Resort & Casino West Coast Nationals...RPM Racing Enterprises is sponsoring the Blue Water Resort & Casino West Coast...

2013-04-18

399

78 FR 35756 - Special Local Regulations; Recurring Marine Events in the Seventh Coast Guard District  

Federal Register 2010, 2011, 2012, 2013

...Docket No. USCG-2013-0398] Special Local Regulations; Recurring...in the Seventh Coast Guard District AGENCY: Coast Guard, DHS...accordance with previously issued special local regulations, vessels...Coast Guard will enforce the special local regulations for the...

2013-06-14

400

78 FR 34886 - Special Local Regulations; Recurring Marine Events in the Seventh Coast Guard District  

Federal Register 2010, 2011, 2012, 2013

...Docket No. USCG-2013-0213] Special Local Regulations; Recurring...in the Seventh Coast Guard District AGENCY: Coast Guard, DHS...the enforcement period, the special local regulation establishes...Coast Guard will enforce the special local regulation for the...

2013-06-11

401

76 FR 25548 - Safety Zone; Coast Guard Use of Force Training Exercises, San Pablo Bay, CA  

Federal Register 2010, 2011, 2012, 2013

...Zone; Coast Guard Use of Force Training Exercises, San Pablo Bay, CA AGENCY: Coast Guard...for Coast Guard Use of Force Training exercises. This safety zone will be established...and/or helicopters taking part in the exercise. Unauthorized persons or vessels...

2011-05-05

402

77 FR 59083 - Safety Zone; Coast Guard Exercise, Hood Canal, Washington  

Federal Register 2010, 2011, 2012, 2013

...1625-AA00 Safety Zone; Coast Guard Exercise, Hood Canal, Washington AGENCY: Coast...in a Coast Guard Ready for Operations exercise in Hood Canal, WA that will take place...safety of the maritime public during the exercise and will do so by prohibiting any...

2012-09-26

403

A geochemical appraisal of oil seeps from the East Coast Basin, New Zealand  

Microsoft Academic Search

Oil seeps and stains from the East Coast Basin, New Zealand have been investigated using biomarker and stable carbon isotope analyses to determine oil-oil correlations. Oils sampled from the Raukumara Peninsula (northern East Coast Basin, North Island) and Marlborough (southern East Coast Basin, South Island) are derived from Late Cretaceous-Paleocene marine source rocks with a minor terrestrial content and are

Karyne M Rogers; John D Collen; Jim H Johnston; Nils E Elgar

1999-01-01

404

Historical Tsunami Deposits on the Sanriku Coast, Japan  

NASA Astrophysics Data System (ADS)

At least six layers of tsunami deposit during the recent 500 years were found in a small valley on the Sanriku coast, just north of Taro (Miyako city, Iwate prefecture), where the 2011 tsunami heights from the Tohoku earthquake ranged from 17 to 34 m. The Sanriku coast is a Ria coast characterized by sawtooth-shaped coastline. Because of the steep-sloped valleys, alluvial deposits are very limited and tsunami traces are difficult to be preserved. Around the survey site, however, a marsh is separated from open sea by a beach ridge with the maximum altitude of about 4.5 m above mean sea level. In the marsh, well-decomposed peat has been developed. The sand deposits were brought by large tsunamis over the beach ridge and preserved in the marsh peat. We conducted drilling survey using the 3-m long Geo-slicer, trench survey, and outcrop observations. We sketch the sedimentary structure, conduct grain size analysis, reconstruct paleo-environment from microfossils, estimate the deposition age on the basis of radiocarbon dating and 210Pb/137Cs analysis, and correlate them with historical tsunamis. The uppermost sand layer which covers the ground surface is probably due to the 2011 tsunami. At least six event deposit layers can be identified in Geo-slicer's sample. Some sandy layers show normal or inverse grading structures and/or lamination, indicating a strong water flow. Some sand layers can be traced up to 400 m inland from the coast, while others can be identified only near the coast. The sandy layers well correlate with abrupt increases in marine microfossils floating near the sea surface. We use it as indicators of inflow of sea water into the marsh. The bottom peat layer of Geo-slicer's sample shows the AD 15th century, indicating that all the sand layers are from tsunamis in historical age during the recent 500 years. These tsunami deposits can be correlated with local tsunamis or distant tsunamis on the basis of radiocarbon dating and 210Pb/137Cs analysis. According to Japanese historical documents, candidates of tsunamis are from the 2011 Tohoku earthquake, the 1933 and 1896 Sanriku earthquakes, the 1793 Miyagi-oki earthquake, the 1763 Aomori-oki earthquake, the 1677 Boso-oki earthquake, and the 1611 Sanriku earthquake. Some trans-Pacific tsunamis such as the 1700 Cascadia and 1960 Chilean tsunamis also caused severe damage along the Sanriku coast and these tsunami deposits may be also preserved.

Goto, T.; Satake, K.; Sugai, T.; Ishibe, T.; Harada, T.; Murotani, S.

2013-12-01

405

Coastal Online Analysis and Synthesis Tool 2.0 (COAST)  

NASA Technical Reports Server (NTRS)

The Coastal Online Assessment and Synthesis Tool (COAST) 3D geobrowser has been developed to integrate disparate coastal datasets from NASA and other sources into a desktop tool that provides new data visualization and analysis capabilities for coastal researchers, managers, and residents. It is built upon the widely used NASA-developed open source World Wind geobrowser from NASA Ames (Patrick Hogan et al.) .Net and C# version is used for development. It is leveraged off of World Wind community shared code samples and COAST 2.0 enhancement direction is based on Coastal science community feedback and needs assessment (GOMA). The main objective is to empower the user to bring more user-meaningful data into multi-layered, multi-temporal spatial context.

Brown, Richard B.; Navard, Andrew R.; Nguyen, Beth T.

2009-01-01

406

Marine diatom biostratigraphy in Pacific Coast neogene basins  

SciTech Connect

Marine diatoms offer a powerful tool for correlation in the Monterey Formation and related fine-grained siliceous rocks deposited in Pacific Coast basins during the late early Miocene (18 Ma) to the earliest Pliocene (4 Ma). In offshore regions, their biostratigraphic usefulness extends to the late Pliocene and Quaternary. In contrast to other microfossil groups, diatoms are abundant and diverse in cold waters, such as those that have typified the US pacific coast since 14 m.y. (latest Luisian benthic foraminiferal stage). Miocene diatom zones can be readily correlated throughout the North Pacific. Correlations with standard tropical microfossil zonations are well established, and an age resolution approaching 200,000-300,000 years is possible. Diatom frustules, however, are readily destroyed by diagenesis, so they are absent in the porcelanite and chert that typify most lower units of the Monterey Formation. In such circumstances, diatoms are commonly preserved in primary dolomites (beds and concretions), and diatom biostratigraphy can be applied.

Barron, J.A.

1988-03-01

407

Improved potential fishing zone forecast along East coast of India.  

NASA Astrophysics Data System (ADS)

Marine fisheries provide support to millions of fishermen community in terms of their living and livelihood Remote sensing technology proved to be useful for successful fishing in reducing time fuel and manpower because of its synoptic coverage Potential Fishing Zone PFZ forecast is being provided to the fishing industry in near-real time since 1992 using SST data derived from NOAA AVHRR thermal IR channel Retrieval of chlorophyll and its mapping has been done over Bay of Bengal from IRS-P4 OCM data Synergetic study of SST and chlorophyll has been established and implemented recently for an improved PFZ forecast The validation of these forecasts revealed 2-3 fold increases in fish catch along east coast of India This program provides socio-economic benefits to the fishermen living all along the Indian coast

Srinivasa Rao, N.; Rao, M. V.; Chowdhary, S. B.; Rao, K. H.; Ramana, I. V.

408

Habitat Suitability Index Models: Northern Pintail (Gulf Coast Wintering)  

USGS Publications Warehouse

A review and synthesis of existing information were used to develop a model for evaluating wintering habitat quality for northern pintail (Anas acuta) along the Gulf of Mexico coast. The model is scaled to produce an index between unsuitable habitat) and 1.0 (optimal habitat). Habitat suitability index models are designed for use with the Habitat Evaluation Procedures previously developed by the U.S. Fish and Wildlife Service. Guidelines for model application and techniques for measuring model variables are provided.

Howard, Rebecca J.; Kantrud, Harold A.

1986-01-01

409

Benthic Faunal Composition along Princess Astrid Coast, East Antarctica  

Microsoft Academic Search

species, representing 9 major benthic faunal groups encountered at 200 m depth off the Princess Astrid coast (Lat. 69°54'S; Long. 12°49'E) in the Eastern Antarctica, are described here. Estimated benthic biomass was 68 gm -2 . Echinoderms (35%) followed by sponges (22%), molluscs (15%), ascidians (8%), coelenterates (5%), crustaceans (5%), bryozoans (4%) and annelids (3%) were the major faunal taxa.

R. A. SREEPADA; V. JAYASREE; A. H. PARULEKAR

410

Large stratocumulus deck off the coast of Baja California  

NASA Technical Reports Server (NTRS)

A bank of stratocumulus clouds is packed against the California coast so tightly it appears to have been painted in this MODIS image from March 31, 2002. California's San Joaquin Valley is greening up, while the Sierra Nevadas remain covered in snow. To the east, the salmon-colored rocks of the Colorado Plateau dominate southern Utah and northern Arizona. Credit: Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC

2002-01-01

411

Historical Review of Tsunamigenic Earthquakes on the Jalisco Coast  

NASA Astrophysics Data System (ADS)

This study aims to discuss, interpret and map in a GIS database, historical data gathered from archives, scientific reports and newspapers, of earthquakes generated along the Jalisco and Colima coasts, to achieve a better understanding of epicenters location and the distribution of earthquake damage. Emphasis is placed on earthquakes that caused or may have caused tsunamis. This coastal area runs parallel to the Rivera's plate subduction, along an active convergent margin. The tectonic setting favors the generation of earthquakes with magnitude Ms?6.5, causing damages locally and regionally. At least five tsunamis (23/02/1875, 03/06/1932, 22/06/1932, 19/06/1995 and 22/01/2003) have originated locally, two of them of great intensity. Historical data are available since the 16th century, but are scarce since this coast had few populated places. Early chronicles from 16th century described populated villages at Bahía de Banderas, Tomatlán and Barra de Navidad, though in the 18th century the western pacific coast of Jalisco (Nueva Galicia) was almost deserted. Between the 18th century and first half of the 20th century, this section of the Pacific coast experienced a slow occupation process, accelerated over the course of the last fifty years. Historical data analysis and GIS database are necessary in order to answer the questions on: 1) which ones were the most intense earthquakes and tsunamis that originated in the area, and 2) what kind of information is available for each one. This information is relevant to earthquake and tsunami hazard assessment and vulnerability of this area.

Castillo, R.; Ramirez-Herrera, M.

2013-05-01

412

Coast Guard has new tool to counter tanker oil spills  

Microsoft Academic Search

A new system, now in the final stages of development, to remove the oil cargo from a damaged tanker may well be critical for use in averting a major pollution incident. The Coast Guard-developed system basically involves the air-drop of pumping equipment and huge collapsible plastic bags next to a stricken tanker. The oil cargo is transferred to the 500-ton-capacity

1970-01-01

413

Utility DSM: off the coasts and into the heartland  

SciTech Connect

Utility demand-side management efforts began on the coasts but have recently spread to the ''heartland.'' The authors review efforts to develop DSM programs and policies in states that are now ramping up programs, identifying key practices that are often linked with progress in states that are new to DSM and discussing the implications for the 18 states that currently lack significant DSM programs. (author)

Nadel, Steven; Gold, Rachel

2010-10-15

414

High Level data fusion system for CanCoastWatch  

Microsoft Academic Search

In this paper, a goal-driven net-enabled distributed data fusion system is described for CanCoastWatch (CCW) project. Multiple sensors are deployed and managed to achieve the goals of situation assessment using a net-enabled architecture. The local tracks reported by multiple sensors are first integrated into global tracks. Decision making is then performed on basic sub-goals that can be directly derived from

Zhenhua Li; H. Leung; P. Valin; Hans Wehn

2007-01-01

415

United States Coast Guard recycling guide. Final report  

SciTech Connect

In accordance with the Pollution Prevention Act of 1990, the United States Coast Guard (CG) is committed to a pollution prevention program that will improve the quality of the environment. A key element of this program is the minimization of municipal, industrial, and hazardous waste being generated at CG facilities nationwide. Recycling of wastes serves to reduce disposal costs and minimize adverse effects on the environment. This document gives guidance to personnel responsible for establishing CG recycling programs.

NONE

1996-07-01

416

Northern half of Mauritania's Atlantic Coast from Skylab  

NASA Technical Reports Server (NTRS)

The northern half of Mauritania's Atlantic Coast (20.0N, 16.5W), as photographed from the Skylab space station in Earth orbit by one of the Skylab 4 crewmen. Spanish Sahara is just out of the picture to the north. The linear chains of sand dunes leading to the sea were the objects of study in an effort to better understand deserts and their functions.

1973-01-01

417

[Lepocreadiidae (Digenea) from fish on the coast of Mozambique].  

PubMed

In the Indian teleostian fishes from the coast of Moçambique were parasitized during investigations in 1980 by 7 species of the family Lepocreadiidae (ODHNER, 1905) NICOLL, 1935, (Digenea). 6 of them had not been observed in this area before. 4 species respectively one genus are described for the first time: Lepidauchen mocambiquensis nov. spec. from Abalistes stellaris, Diploproctodaeoides soleaticus nov. gen, nov. spec. from Abalistes stellaris, Bianium abalistidis nov. spec. from Abalistes stellaris, Pseudolepidapedon laticaecale nov. spec. from Lophoides mutilus. PMID:7337271

Reimer, L W

1981-11-01

418

Paleogeography of Cretaceous ammonoids of the Pacific coast of Russia  

NASA Astrophysics Data System (ADS)

This work presents the results of a study of the biogeographical distribution of Late Albian-Maastrichtian ammonites, found in sequences of the Pacific coast of Russia. The taxa typical of the Pacific Realm were identified, and their distribution traced beyond the borders of this region. In addition, species-migrants, distributed within the studied area were established. As a results of our works, a high level of endemism of ammonite fauna of the East of Russia was noted (75-88% of endemic species, on average). The bipolarity, previously established in the distribution of ammonoids within the Pacific Paleobiogeographical Realm, as well as their high regional provincialism, was confirmed. The following division of the studied area into faunal ammonite provinces in the Late Cretaceous was proposed: Arctic Province; Boreal-Pacific Province, including northeastern Russia (Chukotka Peninsula, the Koryak Upland, Penzhyna Gulf) and the boreal coast of North America (Alaska Peninsula, Arctic Canada and British Columbia); Northwest Pacific Province, including the Primorye Territory, Sakhalin and Shikotan Islands, the Japanese Islands; Northeast Province of the Pacific (the western coast of the United States and Mexico); Southwest Pacific (Australia, New Zealand, Oceania) and Southeast (the western coast of South America and Antarctica, Seymour and James Ross Islands) Provinces. This division is confirmed by data on inoceramid species. In addition, levels of global transgressions and general sea level rise, associated with the appearances of most of widespread marine taxa in the Pacific shelf seas, are established. These include Late Albian, Cenomanian-Turonian boundary, Late Coniacian, Late Campanian, Early-Late Maastrichtian boundary. Moreover, migration of ammonites occurred due to the Tethys Ocean extension and followed the northern sea straits in the Arctic Ocean and within the Pacific Realm, depending on warm currents. Both the counter and one-way migrations were established.

Jagt-Yazykova, E. A.; Zonova, T. D.

2012-05-01

419

Two Fisheries Biology Problems in West Coast Groundfish Management  

Microsoft Academic Search

Two major fisheries biology problems currently confront managers of west coast groundfish. First, fisheries that develop while long-lived but low-production stocks such as rockfish (Sebastes spp.) and sablefish (Anoplopoma fimbria) are fished up attain a harvesting potential that vastly exceeds the long-term productive capacity of the resource. The most effective and perhaps only way to manage these types of fish

Robert C. Francis

1986-01-01

420

Post-disaster Gulf Coast Recovery Using Telehealth  

PubMed Central

Abstract Objective: The Gulf Coast continues to struggle with service need far outpacing available resources. Since 2005, the Regional Coordinating Center for Hurricane Response (RCC) at Morehouse School of Medicine, Atlanta, GA, has supported telehealth solutions designed to meet high service needs (e.g., psychiatry) within primary care and other healthcare organizations. The overall RCC vision is to support autonomous, useful, and sustainable telehealth programs towards mitigating unmet disaster-related needs. Subjects and Methods: To assess Gulf Coast telehealth experiences, we conducted semistructured interviews with both regional key informants and national organizations with Gulf Coast recovery interests. Using qualitative-descriptive analysis, interview transcripts were analyzed to identify shared development themes. Results: Thirty-eight key informants were interviewed, representing a 77.6% participation rate among organizations engaged by the RCC. Seven elements critical to telehealth success were identified: Funding, Regulatory, Workflow, Attitudes, Personnel, Technology, and Evaluation. These key informant accounts reveal shared insights with telehealth regarding successes, challenges, and recommendations. Conclusions: The seven elements critical to telehealth success both confirm and organize development principles from a diverse collective of healthcare stakeholders. The structured nature of these insights suggests a generalizable framework upon which other organizations might develop telehealth strategies toward addressing high service needs with limited resources.

Kim, Thomas J.; Eastburn, Sasha L.; Icenogle, Marjorie L.; Slagle, Michelle; Nuriddin, Azizeh H.; Brantley, Katrina M.; Foreman, Rachel D.; Buckner, Ayanna V.

2013-01-01

421

Meteorological tsunamis along the East Coast of the United States  

NASA Astrophysics Data System (ADS)

Tsunami-like intense sea level oscillations are common along the East Coast of the United States. They are generated by various types of atmospheric disturbances, including hurricanes, frontal passages, tornados, trains of atmospheric gravity waves, pressure jumps, squalls, and gales, that each set up a local, time-limited barotropic response in the affected body of water. These meteorologically induced waves have the same temporal and spatial scales as their seismically generated counterparts and inflict comparable destructions. Observed around the globe, these devastating waves are known locally as "abiki" in Nagaski Bay (Japan), "rissaga" in Spain, "š?iga" along the Croation Coast bordering the Adriatic Sea, "milghuba" in Malta, and "marrobbio" in Italy. Collectively, they may be considered as "meteorological tsunamis" or "meteotsunamis." The updated NOAA tide gauge network with 1 min sampling enabled us to examine resonant amplifications of specific events observed in 2007-2012 and physical properties of meteotsunamis impacting the United States East Coast in general. Of particular interest and focus was the "derecho" event of June 29 - July 2, 2012.

Rabinovich, A.

2012-12-01

422

Transcontinental hydrometeorological extremes and streamflow generation in the Pacific Coast  

NASA Astrophysics Data System (ADS)

Streamflow is a key integrative variable of the hydrologic cycle at the basin scale. In regions along the Pacific coast of the Americas, the role of streamflow varies according to varying physical, biological, and socioeconomical contexts. Improving our understanding of the relationships between those components is a key element to improving the predictability of water availability to sustain food and energy security. However, it is still unclear how large-scale phenomena such as El Niño - Southern Oscillation affect streamflow generation along the Pacific Coast. The present work aims (a) to understand the temporal variability and spatial distribution of hydrometeorological extremes in different basins along the Pacific Coast and (b) how hydrometeorological extreme events contribute to the water year. We hypothesize that hydrometeorologic extreme contributions are to some extent regulated by ENSO, increasing their effect on streamflow generation during extreme-wet and -dry years. Hydrometeorological extreme events are estimated through the use of percentiles of precipitation and streamflow based on a GEV distribution. We assess the Sacramento River Basin (USA), Yaqui and Grijalva River Basins (Mexico) and Chillon River Basin (Perú). Preliminary results show important effects of ENSO negative phase (La Niña) on large streamflow generation in the Grijalva River Basin (Mexico), while in the Sacramento River Basin (USA), the effect is more conspicuous during El Niño, affecting the sustainability of hydropower generation and agricultural activities.

Munoz-Arriola, F.; Lavado, W.; Oglesby, R. J.; Rowe, C. M.; Vazquez-Aguirre, J. L.

2013-12-01

423

Decadal Variability of West Coast Marine Stratus Clouds  

NASA Astrophysics Data System (ADS)

Low frequency variability of West Coast summertime marine stratus clouds are investigated using six decades of observations at several coastal airport locations. The magnitude and direction of long-term trends in summertime marine stratus occurrence along the California coast depends strongly on the cloud base height threshold used to distinguish low clouds from higher clouds. In this study, marine stratus clouds are defined as having cloud base at or below 1000 meters. Using this threshold, a decreasing trend in marine stratus cloud frequency was found for Southern California during the 1950-2012 period. No significant trends were found in Northern California. When averaged over the summer season, the cloud data reveal that coastal stratus has substantial variation on multi-year time scales with typical changes of 10-15% from year to year and 5-7% from decade to decade. Low stratus cloud cover varies over long distances with coherent anomalies that extend from southern California to Oregon. The most important correlated modes of SST with cloud cover anomalies, via a canonical correlation analysis contains both local and remote SST linkages. The first mode is correlated with the PDO and also to Pacific atmospheric circulation patterns and coastal upwelling. There is also a linkage to sea surface temperature anomalies in the low latitude Pacific, suggesting that tropical-extratropical interactions may be involved in driving West Coast cloud cover.

Iacobellis, S.; Schwartz, R. E.; Gershunov, A.; Cayan, D. R.; Williams, P.

2013-12-01

424

Global sea level rise scenarios adapted to the Finnish coast  

NASA Astrophysics Data System (ADS)

We calculate scenarios for the mean sea level on the Finnish coast by combining the land uplift, wind-induced changes in the local sea level, and large-scale sea level rise due to changes in ocean density and circulation and melting of land-based ice. The wind-induced changes were estimated by utilising their correlation with the zonal geostrophic wind, which explains 84-89% of the observed interannual variability of sea level on the Finnish coast. Future scenarios were based on the geostrophic wind projections from nine global circulation models. Land uplift rates are 4.1-9.9 mm/yr, determined from the observations after filtering out the wind-induced effect. A 26-155 cm range for the global mean sea level rise up to 2100 was obtained by combining several recently published scenarios. This rise is geographically unevenly distributed, and on the Finnish coast it is estimated to be only 24-126 cm. Relative sea level change in the Gulf of Finland in 2000-2100 is projected to be + 29 cm (- 22 to + 92 cm). A change of - 5 cm (- 66 to + 65 cm) is projected for the Bothnian Sea, and - 27 cm (- 72 to + 28 cm) for the Bothnian Bay, where the land uplift is stronger.

Johansson, Milla M.; Pellikka, Hilkka; Kahma, Kimmo K.; Ruosteenoja, Kimmo

2014-01-01

425

Coastal Atmosphere and Sea Time Series (CoASTS)  

NASA Technical Reports Server (NTRS)

The Coastal Atmosphere and Sea Time Series (CoASTS) Project aimed at supporting ocean color research and applications, from 1995 up to the time of publication of this document, has ensured the collection of a comprehensive atmospheric and marine data set from an oceanographic tower located in the northern Adriatic Sea. The instruments and the measurement methodologies used to gather quantities relevant for bio-optical modeling and for the calibration and validation of ocean color sensors, are described. Particular emphasis is placed on four items: (1) the evaluation of perturbation effects in radiometric data (i.e., tower-shading, instrument self-shading, and bottom effects); (2) the intercomparison of seawater absorption coefficients from in situ measurements and from laboratory spectrometric analysis on discrete samples; (3) the intercomparison of two filter techniques for in vivo measurement of particulate absorption coefficients; and (4) the analysis of repeatability and reproducibility of the most relevant laboratory measurements carried out on seawater samples (i.e., particulate and yellow substance absorption coefficients, and pigment and total suspended matter concentrations). Sample data are also presented and discussed to illustrate the typical features characterizing the CoASTS measurement site in view of supporting the suitability of the CoASTS data set for bio-optical modeling and ocean color calibration and validation.

Hooker, Stanford B. (Editor); Firestone, Elaine R. (Editor); Zibordi, Giuseppe; Berthon, Jean-Francoise; Doyle, John P.; Grossi, Stefania; vanderLinde, Dirk; Targa, Cristina; Alberotanza, Luigi; McClain, Charles R. (Technical Monitor)

2002-01-01

426

Aeropollen of weeds of the western United States Gulf Coast.  

PubMed

Volumetric air sampling was performed near Corpus Christi, Texas during all of 1988. The most significant weeds releasing airborne pollen, besides the Asteraceae, were the Amaranthaceae and Chenopodiaceae at 14.8% of total pollen captured, which peaked in September and October. Greater pollen capture (74%) occurred from a peak at 11 PM at a time when inversions are frequent to 9 AM than during the period from late morning to 9 PM. Frequency of amaranth-chenopod pollen capture in the western Gulf Coast region showed no relationship with frequencies along the northern and eastern Gulf Coast nor in eastern North America generally, but rather with western North America where these grains have also been sampled at high levels. As in the West, therefore, amaranth-chenopod aeropollen is sufficiently frequent to be a major source of allergens in the western Gulf Coast region. Other weedy plants, Cannabis/Humulus, Rumex, and the Urticaceae (Parieteria/Urtica) each account for only about 1% of the total annual pollen shed, and consequently they are not nearly as potentially relevant here in pollinosis as are the amaranth-chenopods and Asteraceae. Plantago pollen is very infrequently sampled (less than 0.1%) even though several species are common in the area. Acalypha is newly reported as releasing airborne pollen, a genus related to Mercurialis known to release allergenic pollen in Europe. PMID:1859040

Lewis, W H; Dixit, A B; Wedner, H J

1991-07-01

427

ARkStorm: A West Coast Storm Scenario  

NASA Astrophysics Data System (ADS)

The United Stated Geological Survey (USGS) Multi-Hazards Demonstration Project (MHDP) is preparing a new emergency-preparedness scenario, called ARkStorm, to address massive U.S. West Coast storms analogous to those that devastated California in 1861-62. Storms of this magnitude are projected to become more frequent and intense as a result of climate change. The MHDP has assembled experts from the National Oceanic and Atmospheric Administration (NOAA), USGS, Scripps Institute of Oceanography, the State of California, California Geological Survey, the University of Colorado, the National Center for Atmospheric Research, and other organizations to design the large, but scientifically plausible, hypothetical scenario storm that would provide emergency responders, resource managers, and the public a realistic assessment of what is historically possible. The ARkStorm patterns the 1861 - 1862 historical events but uses modern modeling methods and data from large storms in 1969 and 1986. The ARkStorm draws heat and moisture from the tropical Pacific, forming Atmospheric Rivers (ARs) that grow in size, gain speed, and with a ferocity equal to hurricanes, slam into the U.S. West Coast for several weeks. Using sophisticated weather models and expert analysis, precipitation, snowlines, wind, and pressure data the modelers will characterize the resulting floods, landslides, and coastal erosion and inundation. These hazards will then be translated into the infrastructural, environmental, agricultural, social, and economic impacts. Consideration will be given to catastrophic disruptions to water supplies resulting from impacts on groundwater pumping, seawater intrusion, water supply degradation, and land subsidence. Possible climate-change forces that could exacerbate the problems will also be evaluated. In contrast to the recent U.S. East and Gulf Coast hurricanes, only recently have scientific and technological advances documented the ferocity and strength of possible future West Coast storms. A task of ARkStorm is to elevate the visibility of the very real threats to human life, property, and ecosystems posed by extreme storms on the U.S. West Coast. This enhanced visibility will help increase the preparedness of the emergency management community and the public to such storms. ARkStorm is scheduled to be completed by September 2010 and will be the basis of a state-wide emergency response drill, Golden Guardian, led by the California Emergency Management Agency in 2011.

Cox, D. A.; Jones, L. M.; Ralph, F. M.; Dettinger, M. D.; Porter, K.; Perry, S. C.; Barnard, P. L.; Hoover, D.; Wills, C. J.; Stock, J. D.; Croyle, W.; Ferris, J. C.; Plumlee, G. S.; Alpers, C. N.; Miller, M.; Wein, A.; Rose, A.; Done, J.; Topping, K.

2009-12-01

428

The response of benthic foraminifera to various pollution sources: A study from Nellore Coast, East Coast of India  

Microsoft Academic Search

A study of benthic foraminiferal species was carried out along Nellore Coast of South India. Analysis of surfacial sediment\\u000a samples from the study area shows enrichment in heavy metals (Cr, Cu, Pb and Zn). The environment has become so lethal to\\u000a foraminifera that minimal species number (4–7) can currently preserved in living condition in a depth less than 5-fth contour

N. Jayaraju; B. C. Sundara Raja Reddy; K. R. Reddy

2008-01-01

429

Agreement between Coast Federation of Employees/American Federation of Teachers Local 1911 Faculty Unit and Coast Community College District, January 14, 1987.  

ERIC Educational Resources Information Center

This collective bargaining agreement between the faculty unit of the Coast Federation of Employees and Coast Community College District establishes conditions of employment for all full-time certificated employees of the district. The articles in the agreement set forth provisions related to: (1) union recognition; (2) definitions; (3) the…

Coast Community Coll. District, Costa Mesa, CA.

430

Atlantic coast feeding habits of striped bass: A synthesis supporting a coast-wide understanding of trophic biology  

USGS Publications Warehouse

The recent increase in the Atlantic coast population of striped bass, Morone saxatilis (Walbaum), prompted managers to re-evaluate their predatory impact. Published and unpublished diet data for striped bass on the Atlantic Coast of North America were examined for geographical, ontogenetic and seasonal patterns in the diet and to assess diet for this species. Diets of young-of-the-year (YOY) striped bass were similar across the Upper Atlantic (UPATL), Chesapeake and Delaware Bays (CBDEL) and North Carolina (NCARO) areas of the Atlantic coast where either fish or mysid shrimp dominate the diet. For age one and older striped bass, cluster analysis partitioned diets based on predominance of either Atlantic menhaden, Brevoortia tyrannus (Latrobe), characteristic of striped bass from the CBDEL and NCARO regions, or non-menhaden fishes or invertebrates, characteristic of fish from the UPATL, in the diet. The predominance of invertebrates in the diets of striped bass in the UPATL region can be attributed to the absence of several important species groups in Northern waters, particularly sciaenid fishes, and to the sporadic occurrences of Atlantic menhaden to UPATL waters. In all regions, across most seasons and in most size classes of striped bass, the clupeiod fishes; menhaden, anchovies (Anchoa spp.) and river herrings (Alosa spp,) and Atlantic herring, Clupea harengus L., dominated the diets of striped bass above the first year of life.

Walter, III, J. F.; Overton, A. S.; Ferry, K. H.; Mather, M. E.

2003-01-01

431

Integrated coastal zone management plan and coastal zone information system for Mangalore Coast, west coast of India  

NASA Astrophysics Data System (ADS)

In the present study, Integrated Coastal Zone Management Plan (ICZMP) has been developed for Mangalore Coast in Karnataka, along the West Coast of India, by analyzing the remotely sensed data and conventional data. The various data products used in the present study includes, IRS-1C LISS-III+PAN and IRS-P6 LISS IV remotely sensed data, Naval Hydrographic Chart and Survey of India (SOI) toposheets. Different thematic maps prepared in the present study includes, land use/ land cover map, bathymetry map, shoreline configuration map, transportation and drainage network maps, GPS survey map, CRZ map, contour map, DEM, inundation map and coastal erosion vulnerability map. The results of the present study are encouraging. Some of the specific conclusions of the study are; eight coastal vulnerability sites have been identified, significant increase in the built-up area and decrease in the agricultural land, no large scale erosion or deposition in the vicinity of coastal structures such as seawalls, breakwaters and entrance channel of New Mangalore Port Trust and the beaches along the Mangalore Coast are maintaining dynamic equilibrium. To get the online information about all these, Coastal Zone Information System (CZIS) has been developed through V. B. 6. 0. using results of various data analyses.

Dwarakish, G. S.; Shetty, Dinakar; Rao, Rajarama; Pai, Jagadeesh; Natesan, Usha

2006-11-01

432

The 2010 Chilean Tsunami Off the West Coast of Canada and the Northwest Coast of the United States  

NASA Astrophysics Data System (ADS)

The major ( M w = 8.8) Chilean earthquake of 27 February 2010 generated a trans-oceanic tsunami that was observed throughout the Pacific Ocean. Waves associated with this event had features similar to those of the 1960 tsunami generated in the same region by the Great ( M w = 9.5) 1960 Chilean Earthquake. Both tsunamis were clearly observed on the coast of British Columbia. The 1960 tsunami was measured by 17 analog pen-and-paper tide gauges, while the 2010 tsunami was measured by 11 modern digital coastal tide gauges, four NEPTUNE-Canada bottom pressure recorders located offshore from southern Vancouver Island, and two nearby open-ocean DART stations. The 2010 records were augmented by data from seven NOAA tide gauges on the coast of Washington State. This study examines the principal characteristics of the waves from the 2010 event (height, period, duration, and arrival and travel times) and compares these properties for the west coast of Canada with corresponding properties of the 1960 tsunami. Results show that the 2010 waves were approximately 3.5 times smaller than the 1960 waves and reached the British Columbia coast 1 h earlier. The maximum 2010 wave heights were observed at Port Alberni (98.4 cm) and Winter Harbour (68.3 cm); the observed periods ranged from 12 min at Port Hardy to 110-120 min at Prince Rupert and Port Alberni and 150 min at Bamfield. The open-ocean records had maximum wave heights of 6-11 cm and typical periods of 7 and 15 min. Coastal and open-ocean tsunami records revealed persistent oscillations that "rang" for 3-4 days. Tsunami energy occupied a broad band of periods from 3 to 300 min. Estimation of the inverse celerity vectors from cross-correlation analysis of the deep-sea tsunami records shows that the tsunami waves underwent refraction as they approached the coast of Vancouver Island with the direction of the incoming waves changing from an initial direction of 340° True to a direction of 15° True for the second train of waves that arrived 7 h later after possible reflection from the Marquesas and Hawaiian islands.

Rabinovich, Alexander B.; Thomson, Richard E.; Fine, Isaac V.

2013-09-01

433

Genetic and morphological variation of Synaptura lusitanica Capello, 1868, along the Portuguese coast  

NASA Astrophysics Data System (ADS)

The Portuguese sole, Synaptura lusitanica Capello, 1868, is distributed from Portugal to Angola. In Portugal, it occurs on the west coast and on the south-eastern coast. The genetic and morphological variation of S. lusitanica was studied based on protein electrophoresis and morphometric and meristic analyses of samples collected in four areas along the Portuguese coast. The genetic analysis was based on 12 loci, 10 of which were polymorphic. The morphological analysis included 12 morphometric measurements and 7 meristic counts. Both analyses indicated divergence between the west coast sample (Setúbal) and the other samples collected in the south-eastern coast (Olhão, Tavira and Vila Real de Santo António). Although the discreteness of the west coast individuals of S. lusitanica was not completely evident, a conservative approach to the fisheries management of this species would consider two independent stocks.

Cabral, Henrique N.; Marques, Joana F.; Rego, Ana Luísa; Catarino, Ana Isabel; Figueiredo, Joana; Garcia, Joana

2003-11-01

434

Evolution of upwelling fronts off the coast of Portugal  

NASA Technical Reports Server (NTRS)

We have analyzed the spatial and temporal variability of chlorophyll in the Atlantic Ocean off the Portugal coast using satellite imagery from 1979 to 1986 in conjunction with wind data. The spatial patterns in the imagery show the typical inshore-offshore and east-west gradients, while the temporal patterns show seasonal high winter values and low summer values. In the satellite imagery for the period 1979-1986, stable mesoscale and large scale patterns recurred despite interannual differences in absolute satellite-derived pigment concentrations.

1994-01-01

435

Energy loss of coasting gold ions and deuterons in RHIC.  

SciTech Connect

The total energy loss of coasting gold ion beams was measured at RHIC at two energies, corresponding to a gamma of 75.2 and 107.4. We describe the experiment and observations and compare the measured total energy loss with expectations from ionization losses at the residual gas, the energy loss due to impedance and synchrotron radiation. We find that the measured energy losses are below what is expected from free space synchrotron radiation. We believe that this shows evidence for suppression of synchrotron radiation which is cut off at long wavelength by the presence of the conducting beam pipe.

Abreu,N.; Blaskiewicz, M.; Brown, K.A.; Butler, J.J.; FischW; Harvey, M.; Tepikian, S.

2008-06-23

436

Sea Slugs of the Pacific Coast of Costa Rica  

NSDL National Science Digital Library

This Web site from INBio -- Costa Rica's Instituto Nacional de Biodiversidad -- documents the first inventory of opisthobranch mollusks of the Pacific Coast of Costa Rica. Started in 1995, the project represents "the first grand-scale inventory in Costa Rica," and is one of the most comprehensive inventories in all of Latin America. Readers will find a detailed introduction to opisthobranch natural history, a project overview, maps of the collection areas, and a species list organized taxonomically. Photographs are available for most of the species listed; this de facto image gallery of bizarrely beautiful sea slugs is certainly worth a look. The site also provides references, Web links, and information about project participants.

Camacho, Yolanda; Valdes, Angel

437

Pharmacy officer support of U.S. Coast Guard cutters.  

PubMed

U.S. Public Health Service commissioned officers serve in 16 pharmacy billets with the U.S. Coast Guard (USCG). Thirteen of these billets involve serving as points of contact for, and providing logistical, materiel, and educational support to, USCG cutters. USCG instructions have solidified the role of pharmacy officers in the support of USCG afloat units. This article describes one USCG pharmacy officer's experience in providing pharmacy service support to USCG cutters based in Alameda, California, Yerba Buena Island (San Francisco), California, and Honolulu, Hawaii. PMID:11143434

Huntzinger, P E

2000-11-01

438

Astronaut Ronald Evans photographed during transearth coast EVA  

NASA Technical Reports Server (NTRS)

Astronaut Ronald E. Evans is photographed performing extravehicular activity (EVA) during the Apollo 17 spacecraft's transearth coast. During his EVA Command Module pilot Evans retrieved film cassettes from the Lunar Sounder, Mapping Camera, and Panoramic Camera. The cylindrical object at Evans left side is the mapping camera cassette. The total time for the transearth EVA was one hour seven minutes 19 seconds, starting at ground elapsed time of 257:25 (2:28 p.m.) amd ending at ground elapsed time of 258:42 (3:35 p.m.) on Sunday, December 17, 1972.

1972-01-01

439

Astronaut Ronald Evans photographed during transearth coast EVA  

NASA Technical Reports Server (NTRS)

Astronaut Ronald E. Evans is photographed performing extravehicular activity (EVA) during the Apollo 17 spacecraft's transearth coast. During his EVA Command Module pilot Evans retrieved film cassettes from the Lunar Sounder, Mapping Camera, and Panoramic Camera. The total time for the transearth EVA was one hour seven minutes 19 seconds, starting at ground elapsed time of 257:25 (2:28 p.m.) amd ending at ground elapsed time of 258:42 (3:35 p.m.) on Sunday, December 17, 1972.

1972-01-01

440

State of the Arctic Coast 2010: Scientific Review and Outlook  

NASA Astrophysics Data System (ADS)

The coast is a key interface in the Arctic environment. It is a locus of human activity, a rich band of biodiversity, critical habitat, and high productivity, and among the most dynamic components of the circumpolar landscape. The Arctic coastal interface is a sensitive and important zone of interaction between land and sea, a region that provides essential ecosystem services and supports indigenous human lifestyles; a zone of expanding infrastructure investment and growing security concerns; and an area in which climate warming is expected to trigger landscape instability, rapid responses to change, and increased hazard exposure. Starting with a collaborative workshop in October 2007, the International Arctic Science Committee (IASC), the Land-Ocean Interactions in the Coastal Zone (LOICZ) Project and the International Permafrost Association (IPA) decided to jointly initiate an assessment of the state of the Arctic coast. The goal of this report is to draw on initial findings regarding climate change and human dimensions for the Arctic as a whole provided by the Arctic Climate Impact Assessment (ACIA) and Arctic Human Development Report (AHDR) to develop a comprehensive picture of status and current and anticipated change in the most sensitive Arctic coastal areas. Underlying is the concept of a social ecological system perspective that explores the implications of change for the interaction of humans with nature. The report is aimed to be a first step towards a continuously updated coastal assessment and to identify key issues seeking future scientific concern in an international Earth system research agenda. The report titled “State of the Arctic Coast 2010: Scientific Review and Outlook” is the outcome of this collaborative effort. It is organized in three parts: the first provides an assessment of the state of Arctic coastal systems under three broad disciplinary themes - physical systems, ecological systems, and human concerns in the coastal zone; the second examines progress in integrative approaches to monitoring, understanding, and managing change in Arctic coastal systems; the third identifies data gaps and research priorities over the coming decade. The document was prepared by an international writing team, including 15 Lead Authors and 27 Contributing Authors. The draft report was released during the IPY Oslo Conference, 8-12 June 2010, and made available for public comments on the internet. This presentation provides an overview of the final report “State of the Arctic Coast 2010: Scientific Review and Outlook” which will be jointly published by IASC, LOICZ and IPA in early 2011.

Rachold, V.; Forbes, D. L.; Kremer, H.; Lantuit, H.

2010-12-01

441

Heavy metals in marine algae of the Kuwait coast  

SciTech Connect

Marine algae are considered as important primary producers in the coastal region. Several marine algal species are being considered as raw material for various economically important products and this has resulted in their increasing demand. Marine algal species also have been suggested to be the indicators of pollution. Keeping in view the importance of marine algal species for direct or indirect human and cattle consumption, it is necessary to monitor the bioaccumulation of certain elements in these species. This study was aimed at establishing the concentration levels of trace metals in marine algae of the Kuwait coast. 26 refs., 1 fig., 3 tabs.

Buo-Olayan, A.H.; Subrahmanyam, M.N.V. [Kuwait Univ., Safat (Kuwait)] [Kuwait Univ., Safat (Kuwait)

1996-12-31

442

Astronaut Thomas Mattingly performs EVA during Apollo 16 transearth coast  

NASA Technical Reports Server (NTRS)

Astronaut Thomas K. Mattingly II, command module pilot of the Apollo 16 lunar landing mission, performs extravehicular activity (EVA) during the Apollo 16 transearth coast. mattingly is assisted by Astronaut Charles M. Duke Jr., lunar module pilot. Mattingly inspected the SIM bay of the Service Module, and retrieved film from the Mapping and Panoramic cameras. Mattingly is wearing the helmet of Astronaut John W. Young, commander. The helmet's lunar extravehicular visor assembly helped protect Mattingly's eyes frmo the bright sun. This view is a frame from motion picture film exposed by a 16mm Maurer camera.

1972-01-01

443

Simulation of prognostic tsunamis on the Korean Coast  

NASA Astrophysics Data System (ADS)

Prognostic characteristics of potential tsunamis in the East (Japan) Sea are discussed. Zones of tsunami sources for potential danger are selected using the seismic gap theory. Numerical model based on linear long wave theory is used to simulate the tsunami propagation from 28 potential tsunamigenic earthquakes. As a result, the synthetic tsunami catalogue is obtained for each coastal point along the east Korean coast. Statistical analysis of data for tsunami wave height distribution can be described by the log-normal curve. On the average, maximal value of tsunami wave height in each point does not exceed the mean value of computed wave heights by more than six times.

Choi, Byung Ho; Hong, Sung Jin; Pelinovsky, Efim

444

Interaction for solitary waves in coasting charged particle beams  

NASA Astrophysics Data System (ADS)

By using the extended Poincare-Lighthill-Kuo perturbation method, the collision of solitary waves in a coasting charged particle beams is studied. The results show that the system admits a solution with two solitary waves, which move in opposite directions and can be described by two Korteweg-deVries equation in small-amplitude limit. The collision of two solitary waves is elastic, and after the interaction they preserve their original properties. Then the weak phase shift in traveling direction of collision between two solitary waves is derived explicitly.

Liu, Shi-Wei; Qi, Xin; Han, Jiu-Ning; Hong, Xue-Ren; Shi, Yu-Ren; Duan, Wen-shan; Yang, Lei

2014-03-01

445

Worst scenarios of tsunami effects along the Mediterranean coast of Egypt  

Microsoft Academic Search

Scenarios of tsunami effects represent a very useful technique for the definition and evaluation of tsunami hazard and risk\\u000a for the Egyptian coast. This paper is an attempt to develop different worst scenarios of tsunamigenesis toward the Egyptian\\u000a Coast for five segment localities along three different sub-regions (Hellenic Arc, Cyprean Arc and Levantine Coast) in the\\u000a eastern Mediterranean Sea. These

Amr Z. Hamouda

2010-01-01

446

PROVISION OF LIQUIDITY MANAGEMENT: AN INCENTIVE TO CURB DEFAULT IN THE IVORY COAST'S AGRICULTURAL CREDIT PROGRAMS \\/ PRISE EN COMPTE DE LA GESTION DE LA LIQUIDITÉ: UNE INCITATION À LA RÉDUCTION DU TAUX DES IMPAYÉS DANS LES PROGRAMMES DE CRÉDIT AGRICOLE EN CÔTE D'IVOIRE  

Microsoft Academic Search

Dans les pays en développement, de nombreuses institutions de crédit agricole connaissent un succès limité principalement en raison des taux d'impayés alarmants parmi les agriculteurs. En Côte d'Ivoire, la Banque Nationale de Développement Agricole (BNDA), est la seule institution publique spécialisée dans l'octroi du crédit agricole. Cependant, la viabilité des programmes de crédit de la BNDA est menacée par les

Kinimo Rene Yabile

1987-01-01

447

Selected French Speaking Sub-Saharan African Countries: Burundi, Cameroon (Eastern), Chad, Congo (Brazzaville), Dahomey, Gabon, Ivory Coast, Mali, Mauritania, Niger, Rwanda, Senegal, Togo, Upper Volta, Zaire. A Guide to the Academic Placement of Students from These Countries in Academic Institutions of the United States.  

ERIC Educational Resources Information Center

The educational systems of 15 Sub-Saharan African countries are described, and guidelines concerning the academic placement of students who wish to study in U.S. institutions are provided. Tables indicate the grades covered by primary education and secondary education (academic and technical). Burundi, Rwanda, and Zaire have followed the Belgian…

Trudeau, Edouard J. C.

448

Summary of Synoptic Meteorological Observations (SSMO). West African and Selected Island Coastal Marine Areas. Volume 2. Area 9, Conakry. Area 10, Monrovia. Area 11, Ivory Coast. Area 12, Accra. Area 13, Gulf of Guinea East, Area 14, Luanda NW. Area 15, Lobito.  

National Technical Information Service (NTIS)

This report presents marine climatological data for specific coastal areas in 21 different tables including weather occurrence, wind direct and speed, cloud amount, ceiling height, visibility, precipitation, dry bulb, relative humidity, air-sea temperatur...

1976-01-01

449

75 FR 29740 - Office of Elementary and Secondary Education; Overview Information; Gulf Coast Recovery Grant...  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF EDUCATION Office of Elementary and Secondary Education; Overview Information; Gulf Coast Recovery...educational agencies (LEAs) in improving education in areas affected by Hurricanes...

2010-05-27

450

Detection of Enteric Viruses in Shellfish from the Norwegian Coast  

PubMed Central

Common blue mussels (Mytilus edulis), horse mussels (Modiolus modiolus), and flat oysters (Ostrea edulis) obtained from various harvesting and commercial production sites along the Norwegian coast were screened for the presence of norovirus by a real-time reverse transcription (RT)-nested PCR assay and for possible indicators of fecal contamination, i.e., for F-specific RNA bacteriophages (F-RNA phages) by plaque assay and for human adenoviruses and human circoviruses by nested PCR assay. The aims were to obtain relevant information for assessing the risk of transmission of enteric viruses by shellfish and to investigate the potential of various indicator viruses in routine screening. Noroviruses were detected in 6.8% of the samples, and the indicators were detected in 23.8% (F-RNA phages), 18.6% (adenoviruses), and 8.0% (circoviruses) of the samples. A seasonal variation was observed, with the exception of circoviruses, with more positive samples in the winter. A positive correlation was found between F-RNA phages and noroviruses. However, F-RNA phages were present in only 43% of the norovirus-positive samples. The results show that mussels from the Norwegian coast can constitute a risk of infection with enteric viruses and that routine testing of samples may be justified. Advantages and disadvantages of various options for screening are discussed.

Myrmel, M.; Berg, E. M. M.; Rimstad, E.; Grinde, B.

2004-01-01

451

US Atlantic coast striped bass: Issues with a recovered population  

USGS Publications Warehouse

Striped bass, Morone saxatilis (Walbaum), is an anadromous species naturally occurring along the US Atlantic coast, which historically supported valuable commercial and recreational fisheries. In response to a near order-of-magnitude decline in landings, the Atlantic States Marine Fisheries Commission enacted a management plan in 1981 protecting fish until they could spawn at least once. By 1989, recruitment increased in natal rivers and regulations were relaxed, permitting limited fisheries by 1990. By 1995, the stock was declared fully recovered. Since the recovery, concern has increased over the health of the stocks. In the 1990s, fish in poor physical condition with dermal lesions became common in Chesapeake Bay. Pathogens of most concern in cultures from fish include the genus Mycobacterium. Coincident with declines in fish health were changes in diets, declines of preferred prey, and reduced growth and condition. Theories were suggested linking declines in condition to reductions in forage base or pathogens. Diets have changed since the 1950s and while many Chesapeake fish are infected with mycobacteria, it is still not known how or if these factors are linked. The highest priorities for research were considered to be: linking numerous local and regional studies to provide a coast-wide perspective; continuation of investigations linking population health to the prey-base; determination of the cause-effect of mycobacteria infections; and formulation of management options.

Hartman, K. J.; Margraf, F. J.

2003-01-01

452

Latitudinal gradients in tertiary molluscan faunas of the Pacific coast  

USGS Publications Warehouse

Tertiary molluscan faunas of the middle latitudes of the marginal eastern North Pacific are characterized by warm-water taxa whose descendants now live in more southerly latitudes. A series of profiles in which cumulative percentages of warm-water faunal elements are plotted against latitude show progressive northward decreases in the percentage of these elements in the faunas of Pacific coast Tertiary stages. Systematic changes in the relative position of these latitudinal gradients during the Middle and Late Tertiary are related to climatic change in the Pacific Basin. Widespread tropical marine climate in the middle latitudes of the eastern North Pacific during the Eocene is indicated by widespread faunal units characterized by high levels of taxonomic diversity. Succeeding Early Oligocene faunas are less diverse, suggesting cooler climatic conditions. Unusually low representations of warm-water genera characterize the molluscan faunas of the Acila shumardi Zone in central California (latitude 34??-37??N). The anomalously cool-water aspect of these faunas may record the occurrence of upwelling along a bold linear segment of the Pacific coast. During the Late Oligocene or the Early Miocene, they are replaced by faunas of unusually warm-water aspect resulting in positive anomalies in Miocene latitudinal faunal gradients in central California. The Miocene anomalies seem to result from the development of an irregular Neogene coastline with extensive, newly established shallow-water embayments. ?? 1970.

Addicott, W. O.

1970-01-01

453

Modeling the population dynamics of Gulf Coast sandhill cranes  

USGS Publications Warehouse

The Midcontinental population of sandhill cranes (Grus canadensis) has a large geographic range, contains nearly 500,000 birds, and is hunted in much of its range. The population includes three subspecies; the numbers of two of these are uncertain, and they should be afforded protection from hunting that would be detrimental to their population. The two subspecies of concern tend to concentrate in the eastern part of the Great Plains during fall and spring and to winter along the Gulf Coast in Texas. This paper uses the limited information available about the Gulf Coast subpopulation in a model. We included in the model five input parameters: population size, annual survival rate in absence of hunting, the number of birds taken by hunters, the extent of additivity of hunting mortality, and recruitment rate, measured as the fraction of juveniles in the winter population. Using three widely ranging estimates of each parameter, we examined the general behavior of the simulated population. Realistic population projections occurred with medium (60,000) or large (166,000) population sizes, low (2000) or moderate (4000) harvests, and recruitment rates of 0.07 and 0.11. All values of survival in the absence of hunting and additivity of hunting yielded some realistic projections. Results of modelling suggest that the variables warranting closer monitoring are population size and recruitment rate.

Johnson, D.H; Kendall, W. L.

1997-01-01

454

Possible occultation by Pluto from US East Coast  

NASA Astrophysics Data System (ADS)

We have been asked to help disseminate the news of a possible occultation by Pluto visible to observers on the US East coast. Although the AAVSO does not ordinarily issue announcements of upcoming occultations, in this case the object is Pluto and the NASA New Horizons mission (http://www.nasa.gov/mission_pages/newhorizons/main/index.html) will be visiting Pluto in 2015. The information below has been supplied by Dr. Leslie Young (Southwest Research Institute), who is coordinating this observing campaign on Pluto. Dr. Young is also Deputy Project Scientist for the New Horizons mission. ALERT: Possible Pluto occultation Wednesday night (2012/06/14 03:28 UT) from US East coast. CONTACT: Leslie Young (layoung@boulder.swri.edu; work: 303-546-6057; skype: drpluto). Also see our planning pages in progress at http://wiki.boulder.swri.edu/mediawiki/index.php/2012-06-14_Pluto_occultation. Pluto's thin, nitrogen atmosphere is in vapor-pressure equilibrium with the surface ice, and changes seasonally. We've seen it double since 1988, and now we measure its pressure once or twice a year. The technique we use is stellar occultation, when a star passes behind Pluto's atmosphere. The atmosphere defocuses the starlight. By the timing of the fading of the star, we measure the pressure and temperature in Pluto's atmosphere at ~10 km resolution. MORE INFORMATION: See http://wiki.boulder.swri.edu/mediawiki/index.php/2012-06-14_Pluto_occultation.

Waagen, Elizabeth O.

2012-06-01

455

Late Holocene Sea Temperatures along the Central California Coast  

NASA Astrophysics Data System (ADS)

Mussel shells from central California coastal archaeological sites record changes in sea surface temperatures in the past 2000 years. Water temperatures, inferred from oxygen isotopes in the shells, were about 1°C cooler than present and stable between 2000 and 700 yr ago. Between about 700 and 500 yr ago, seasonal variation was greater than present, with extremes above and below historic levels. Water temperatures were 2-3°C cooler than today 500-300 yr ago. The interval of variable sea temperatures 700-500 yr ago partially coincided with an interval of drought throughout central California. A coincident disruption in human settlement along the coast suggests movements of people related to declining water sources. Quantities of fish bone in central coast middens dating to this same period are high relative to other periods, and the remains of northern anchovies, a species sensitive to changing oceanographic conditions, are also abundant. The continued use of local fisheries suggests that changes in settlement and diet were influenced more by drought than by a decrease in marine productivity, as fish provided a staple during an interval of low terrestrial productivity.

Jones, Terry L.; Kennett, Douglas J.

1999-01-01

456

Critical Thinking in the Tower Ivory  

ERIC Educational Resources Information Center

In traveling about contemporary academia, especially the haunts of philosophy and English, one is likely to stumble upon the lair of a new monster, one that bears considerable resemblance to Hawthorne's dreamy vision. The name of this huge miscreant is Critical Thinking--a name uttered by professors and students with more awe than understanding.…

Whitaker, Albert Keith

2002-01-01

457

Tsunami hazard assessment along the U. S. East Coast  

NASA Astrophysics Data System (ADS)

In 2005, the National Tsunami Hazard Mitigation Program (NTHMP) was tasked by Congress to develop tsunami inundation maps for the entire US coastline. This work provides an overview of the modeling work related to the development inundation maps along the US east coast. In this region the paucity of historical tsunami records and lack of paleotsunami observations yields a large uncertainty on the source and magnitude of potential extreme tsunami events, and their related coastal hazard. In the Atlantic Ocean basin significant tsunami hazard may result from far-field earthquakes, such as a repeat of the M8.9 Lisbon 1755 event in the Azores convergence zone, or a hypothetical extreme M9 earthquake in the Puerto Rico Trench (PRT). Additionally, it is believed that a repeat of one of the large historical collapses, identified at the toe of the Cumbre Vieja volcano on La Palma (Canary Islands; i.e., with a maximum volume of 450 km3), could pose a major tsunami hazard to the entire US east coast. Finally, in the near-field, large submarine mass failure (SMF) scars have been mapped by USGS, particularly North of the Carolinas (e.g., Currituck), which are believed to have caused past tsunamis. Large SMFs can be triggered by moderate seismicity (M7 or so), such as can occur on the east coast. In fact, one of the few historical tsunamis that significantly affected this region was caused by the 1929 Grand Bank underwater slide, which was triggered by a M7.2 earthquake. In this work we identify and parameterize all potential tsunami sources affecting the US east coast, and perform simulations of tsunami generation, propagation, and coastal impact in a series of increasingly resolved nested grids. Following this methodology, tsunami inundation maps are currently being developed for a few of the most affected areas. In simulations, we use a robust and well-validated Fully Nonlinear Boussinesq long-wave model (FUNWAVE-TVD), on Cartesian or spherical grids. Coseismic tsunami sources are modeled using the standard Okada method. For landslide tsunamis, we first generate tsunami sources using a three-dimensional Navier-Stokes model (THETIS or NHWAVE). These models feature all relevant physical processes, such as frequency dispersion (very important for landslide sources), nonlinear wave effects during shoaling, and dissipation by bottom friction and wave breaking (via a shock-capturing TVD algorithm). In modeling coastal hazard from various sources, we find that tsunamigenic SMFs, which are the nearest tsunami sources and can potentially cause highly focused coastal runup, may control tsunami hazard for many east coast communities north of the Carolinas. In many cases, however, we find that a wide shallow continental shelf may cause significant dissipation of the shorter waves caused by SMFs and hence offer some protection. The accurate modeling of the delicate balance between nonlinear and dissipative processes governing such situations is currently being researched and will be the object of a separate presentation. Additionally, considerable efforts are being devoted to properly parameterizing extreme SMFs, which are also the object of collaborative work with geologists and marine geotechnical experts (reported independently).

Tajalli Bakhsh, T.; Grilli, S. T.; Harris, J. C.; Kirby, J. T.; Shi, F.; Tehranirad, B.

2012-12-01

458

Contrasting oceanographic conditions and phytoplankton communities on the east and west coasts of Australia  

NASA Astrophysics Data System (ADS)

The composition and dynamics of the phytoplankton communities and hydrographic factors that control them are described for eastern and western Australia with a focus on the Eastern Australian Current (EAC) and Leeuwin Current (LC) between 27.5° and 34.5°S latitude. A total of 1685 samples collected from 1996 to 2010 and analysed for pigments by high performance liquid chromatography (HPLC) showed the average TChl a (monovinyl+divinyl chlorophyll a) concentration on the west coast to be 0.28±0.16 ?g L -1 while it was 0.58±1.4 ?g L -1 on the east coast. Both coasts showed significant decreases in the proportions of picoplankton and relatively more nanoplankton and microplankton with increasing latitude. On both coasts the phytoplankton biomass (by SeaWiFS) increased with the onset of winter. At higher latitudes (>27.5°S) the southeast coast developed a spring bloom (September) when the mean monthly, surface chlorophyll a (chl a) concentration (by SeaWiFS) was 48% greater than on the south west coast. In this southern region (27.5-34.5°S) Synechococcus was the dominant taxon with 60% of the total biomass in the southeast (SE) and 43% in the southwest (SW). Both the SE and SW regions had similar proportions of haptophytes; ˜14% of the phytoplankton community. The SW coast had relatively more pelagophytes, prasinophytes, cryptophytes, chlorophytes and less bacillariophytes and dinophytes. These differences in phytoplankton biomass and community composition reflect the differences in seasonality of the 2 major boundary currents, the influence this has on the vertical stability of the water column and the average availability of nutrients in the euphotic zone. Seasonal variation in mixed layer depth and upwelling on the west coast appears to be suppressed by the Leeuwin Current. The long-term depth averaged (0-100 m) nitrate concentration on the west coast was only 14% of the average concentration on the east coast. Redfield ratios for NO 3:SiO 2:PO 4 were 6.5:11.9:1 on the east coast and 2.2:16.2:1 on the west coast. Thus new production (nitrate based) on the west coast was likely to be substantially more limited than on the eastcoast. Short term (hourly) rates of vertical mixing were greater on the east coast. The more stable water column on the west coast produced deeper subsurface chlorophyll a maxima with a 25% greater proportion of picoeukaryotes.

Thompson, P. A.; Bonham, P.; Waite, A. M.; Clementson, L. A.; Cherukuru, N.; Hassler, C.; Doblin, M. A.

2011-03-01

459

North-Central California Coast Recovery Domain 5-Year Review: Summary and Evaluation of California Coastal Chinook Salmon ESU, Central California Coast Coho Salmon ESU.  

National Technical Information Service (NTIS)

Many West Coast salmon and steelhead (Oncorhynchus sp.) stocks have declined substantially from their historic numbers and now are at a fraction of their historical abundance. There are several factors that contribute to these declines, including: overfis...

B. C. Spence D. A. Boughton S. T. Lindley T. H. Williams

2012-01-01

460

Headland sediment bypassing and beach rotation in a rocky coast: an example at the western Portuguese coast  

NASA Astrophysics Data System (ADS)

Headland sediment bypassing plays a major role in definition of coastal sedimentary budget and consequently in coastal management. This process is particularity important at headland-bay beaches on rocky coasts. However, headland-bay beach research is usually focused on the beach rotation since these beaches are generally regarded as closed systems. The sediment bypassing mechanisms have been extensively studied in the context of artificial structures (e.g. groins and jetties) but studies of natural headland sediment bypassing are scarce and usually applied to decadal time scales. This work aims to contribute to the understanding of headland sediment bypassing processes in non-artificial environments, taking as a case study a natural coastal stretch at the Portuguese west coast. The study is supported on the analysis of planform beach changes using Landsat satellite images (with an acquisition frequency of 16 days) complemented with field surveys with DGPS-RTK and ground-based photographic monitoring. The study area can be described as a cliffed rocky coast that accommodates a series of headland-bay beaches with different geometries: some are encased in the dependence of fluvial streams, while others correspond to a narrow and elongated thin sand strip that covers a rocky shore platform. This coast is generally characterized by a weak, but active, sediment supply and high levels of wave energy due to the exposure to the swells generated in the North Atlantic. The long-term stability of the beaches in conjunction with active sediment supply along the study area (from streams and cliff erosion) and a sink at the downdrift end of this coastal stretch (an active dune system) support the existence of headland sediment bypassing. The analysis of planform beach changes show a coherent signal in time but with a range that depends on the orientation of the stretch where each beach is included. In general, beaches displays a clockwise rotation during summer related to the NW (less energetic) incident wave conditions. The persistence of these conditions induces an enlargement of the beach downdrift (southward) and eventually sediment bypassing. This process can result in a continuous inner bar along the headland coast, which migrates downdrift in the surf zone and weld to the downdrift beach. The counter-clockwise rotation observed in the winter is more variable being in agreement with the less persistent W and SW incident wave conditions, suggesting that sediment bypassing occurs only southwards. The work was funded by FEDER funds through the Operational Programme for Competitiveness Factors - COMPETE and FCT National Funds - Portuguese Foundation for Science and Technology under the project Beach to Canyon Head Sedimentary Processes (PTDC/MAR/114674/2009). First author benefits from a PhD grant funded by FCT (SFRH/BD/79126/2011).

Ribeiro, Mónica; Taborda, Rui; Lira, Cristina; Bizarro, Aurora; Oliveira, Anabela

2014-05-01

461

Changes in erosional and depositional processes with time and management of Goa Coast, central west coast of India  

NASA Astrophysics Data System (ADS)

Coastal and estuarine environments, world over are facing immense impact due to both natural and anthropogenic processes. The natural processes include climatic changes, rise in sea level, cyclone, flood, tsunamis, coastal erosion, salinity ingress and siltation. Likewise, anthropogenic pressures include population expansion, ocean traffic, dredging, resource exploitation, pollution, unplanned urbanization and intensive industrialization. Due to these impacts the fragile coastal ecosystem and its entities, like sub ecosystems, resources, morphological units are undergoing unprecedented degradation, rendering these coastal regions vulnerable, impinging risk to human population, livestock, properties, as also, devastation of resourceful lands. This accelerates economic fatalities and irreversible obliteration to the ecosystems. Evidences on the global concern towards this issue have been well established. The countries world over, including India, pledged consensus towards the protection of the fragile coastal ecosystems through UNCED, Agenda-21. India, on 19th February 1991, has designated specified corridors along the landward side of the coastline as "Coastal Regulatory Zones" (CRZ), through appropriate policy and law. In context with the CRZ notification, scientific database at local and site-specific areas, developed. Synergy of ecosystems, landscape and resources with demographic, tourism data, vis-à-vis, economic corridors/sectors aided the paradigms and criterion for local and site specific prescriptions for Goa Coast. The Goa coast is a part of central west coast of India and is characterized by pocket beaches flanked by rocky cliffs, estuaries, bays, and at some places mangroves. Beaches in southern Goa are long and linear in nature with sand dunes. The Mandovi and Zuari estuarine system in Goa is the largest in this part of the coast. Mud flats, swampy marshes and wetlands are found mainly along estuaries and creeks. The beaches of Goa are stable beaches with seasonal morphological changes and annual cyclicity. The coastal zone in Goa is exposed to environmental and anthropogenic pressures. Some of the factors attributing to these pressures can be due to demographic settings and population growth, rapid urbanization, migration, recreation and tourism activities, fishery activities, transportation problems, socio-economic shift and transformation in occupation like, fishing, tourism, trade, salt industry; wetlands conversion, degradation of agriculture land and fallow lands. Shoreline changes observed overlapping the data after 32 years showed that all along the coast of Goa, from north to south, there is large variation in depositional and erosional processes. Deposition is specifically observed at Morjim, Baga, Campal, Miramar, Mobor and erosion is specifically observed at Kerim, Anjuna, Velsao. The present study reveals that all along the estuarine systems, there is net deposition. Further change detection study carried out overlapping the data after 38 years showed transformation of Khazan lands, conversion of marshy swampy and water logged areas, increase in Mangrove areas and decrease in salt pans. The present paper has succeeded in delineating various coastal ecosystems, coastal land forms, their resource potentials and transformation, if any. The study has helped earmarking the coastal region into conservation, development and utilization areas.

Nayak, Ganapati; D'Souza, Joseph

2010-05-01

462

A coastal hazards data base for the US Gulf Coast  

SciTech Connect

This document describes the contents of a digital data base that may be used to identify coastlines along the US Gulf Coast at risk to sea-level rise. The data base integrates point, line, and polygon data for the US Gulf Coast into 0.25{degree} latitude by 0.25{degree} longitude grid cells and into 1:2,000,000 digitized line segments that can be used by raster or vector geographic information systems (GIS) as well as by non-GIS data base systems. Each coastal grid cell and line segment contains data on elevation, geology, geomorphology, sea-level trends, shoreline displacement (erosion/accretion), tidal ranges, and wave heights. To allow for the identification of coastlines at risk from sea-level rise, 7 of the 22 original data variables in this data base were classified by vulnerability and used to create 7 relative risk variables. These relative risk variables range in value from 1 to 5 and may be used to calculate a coastal vulnerability index for each grid cell and/or line segment. The data for these 29 variables (i.e., the 22 original variables and 7 risk variables) have been placed into the following data formats: (1) Gridded polygon data for the 22 original data variables. Data include elevation, geology, geomorphology, sea-level trends, shoreline displacement (erosion/accretion), tidal ranges, and wave heights. (2) Gridded polygon data for the seven classified risk variables. The risk variables are classified versions of: mean coastal elevation, geology, geomorphology, local subsidence trend, mean shoreline displacement, maximum tidal range, and maximum significant wave height. (3) 1:2,000,000 line segment data containing the 29 data variables (the 22 original data variables and the seven classified risk variables). (4) Supplemental point data for the stations used in calculating the sea-level trend and tidal range data sets. (5) Supplemental line segment data containing a 1:2,000,000 digitized coastline of the US Gulf Coast as defined by this document.

Daniels, R.C. [ed.] [Oak Ridge National Lab., TN (United States). Carbon Dioxide Information Analysis Center] [ed.; Oak Ridge National Lab., TN (United States). Carbon Dioxide Information Analysis Center; [Univ. of Tennessee, Knoxville, TN (United States). Energy, Environment and Resources Center; Gornitz, V.M. [National Aeronautics and Space Administration, New York, NY (United States). Goddard Inst. for Space Studies] [National Aeronautics and Space Administration, New York, NY (United States). Goddard Inst. for Space Studies; White, T.W. [Oak Ridge National Lab., TN (United States). Carbon Dioxide Information Analysis Center] [Oak Ridge National Lab., TN (United States). Carbon Dioxide Information Analysis Center

1994-06-01

463

Evolving Shoreline Change Rates Along the US Pacific Northwest Coast  

NASA Astrophysics Data System (ADS)

Coastal change hazards are increasingly affecting economically important areas, including those used for infrastructure, commerce, and public recreation. Quantifying shoreline change rates and understanding the contributing factors is crucial to protect these areas and to assist federal, state, and local agencies in developing long-term management plans. A recent study by the USGS National Assessment of Shoreline Change project analyzed the historical shoreline record along the U.S. Pacific Northwest with emphasis on both century-scale (1800s--2002) and decadal-scale (1960-80s--2002) change rates (Ruggiero, P., Kratzmann, M.A., Himmelstoss, E.G., Reid, D., Allan, J., and Kaminsky, G., 2013: U.S. Geological Survey Open-File Report 2012-1007, 55 p.). The study was the first consistent state-wide coastal change assessment for Oregon and revealed a significant increase in erosion hazards in the near-term. The coastal landscape in Oregon is particularly dynamic and includes beaches that are backed by both cliffs and dunes, and range in texture from sand to cobble. The high wave energy in the Pacific Northwest results in a morphology with primarily intermediate to dissipative beaches. Resistant rocky headlands separate the Oregon coast into 18 distinct littoral cells, greatly influencing how the shoreline changes with time. While the century-scale average of all 560 km of Oregon coastline suggests the shore is prograding at 0.4 m/yr, the decadal-scale record indicates that 13 of the 18 littoral cells either are accreting at a slower rate, have changed from accretional to erosional, or are eroding at a faster rate. This apparent increase in erosion-affected coasts may be caused by several factors including sea-level rise, increasing storm wave heights, tectonic uplift, and climatic events (eg., El Niño), but overall it indicates a shifting trend in shoreline change rates. In the present study, we quantify shoreline change rates on a third timescale, seasonal to interannual, to further investigate coastal change hazards along the Oregon coast. The Oregon Department of Geology and Mineral Industries (DOGAMI) has surveyed several sites along Oregon's coastline at least annually since approximately the late 1990s. Shoreline positions are obtained either from beach profiles collected with Real Time Kinematic Differential GPS (RTK-DGPS) technology or extracted from lidar data. For consistency, we analyze shoreline change at the same transect locations as those used in the National Assessment, with the same analysis software, the USGS Digital Shoreline Analysis System (DSAS) within ArcGIS. With this approach, our study directly compares change rates at three distinct time scales yielding new insights into Oregon's shoreline evolution.

Anderson, D. L.; Ruggiero, P.; Allan, J. C.

2013-12-01

464

The Mamook Book: Activities for Learning About the Northwest Coast Indians.  

ERIC Educational Resources Information Center

A student activity book about the Northwest Coast provides "to-do" activities, such as reading, coloring, cutting out and putting together, while learning about the Northwest Coast tribes, their language, legends, clothing and ways of living. A map identifies the tribes and their location along the shores of Alaska, British Columbia, western…

Mathers, Sharon; And Others

465

Coast Salish and U.S. Geological Survey 2009 Tribal Journey Water-Quality Project.  

National Technical Information Service (NTIS)

The Salish Sea, contained within the United States and British Columbia, Canada, is the homeland of the Coast Salish Peoples and contains a diverse array of marine resources unique to this area that have sustained Coast Salish cultures and traditions for ...

E. E. Grossman S. K. Skin

2010-01-01

466

SUSTAINABLE DEVELOPMENT OF OCEANS AND COASTS: THE ROLE OF THE PRIVATE SECTOR  

Microsoft Academic Search

Oceans and coasts provide the majority of the world's ecosystem benefits and much of the private sector is dependent on ocean and coastal resources, services and space. Due to their unique transboundary characteristics, the sustainable development of these areas requires the participation of all stakeholders. However, the international regime for the sustainable development of oceans and coasts is being developed

Paul Holthus

467

Evaluation of fuel-cell technology for Coast Guard applications. Final report  

Microsoft Academic Search

Recent proposals and the literature show promise of fuel cells being commercially available in the next decade. We searched the literature to determine the current state of fuel-cell technology, to determine if fuel cells can be used by the U.S. Coast Guard, and to make proposals for possible research and development efforts by the Coast Guard. Alkaline and phosphoric acid

Barrett

1988-01-01

468

78 FR 55214 - Annual Marine Events in the Eighth Coast Guard District, Sabine River; Orange, TX  

Federal Register 2010, 2011, 2012, 2013

...Marine Events in the Eighth Coast Guard District, Sabine River; Orange, TX AGENCY: Coast Guard, DHS. ACTION: Notice of enforcement...O.R.T.) boat races to be held on the Neches River in Orange, TX from 3 p.m. on September 20, 2013, through 6...

2013-09-10

469

77 FR 47519 - Annual Marine Events in the Eighth Coast Guard District, Sabine River; Orange, TX  

Federal Register 2010, 2011, 2012, 2013

...Marine Events in the Eighth Coast Guard District, Sabine River; Orange, TX AGENCY: Coast Guard, DHS. ACTION: Notice of enforcement...Regulations for the S.P.O.R.T. Power Boat Neches River in Orange, TX from 3 p.m. on September 21, 2012, through 6...

2012-08-09

470

Sea-Level Rise for the Coasts of California, Oregon, and Washington  

NSDL National Science Digital Library

This video features Dr. Gary Griggs, scientist with the National Research Council (NRC) and professor at UCSC, reviewing highlights from the recently released report by the NRC about predictions for sea-level rise on the West Coast states. The video includes effective visualizations and animations of the effects of plate tectonics and sea-level rise on the West Coast.

Science, The N.

471

First record of the twostripe goby, Valenciennea helsdingenii (Gobiidae, Gobiiformes) from the southeast coast of India  

PubMed Central

Abstract Two specimens of Valenciennea helsdingenii (Bleeker, 1858) were collected off Punnakayal coast, from Gulf of Mannar, southeast coast of India in November 2012. The morphometric and meristic characters of the recorded specimens are described and discussed. This is the first record of the species from the Indian waters that is a range extension of its known range within the Indian Ocean.

Kannan, K.; Sureshkumar, K.; Ranjith, L.; Joshi, K. K.; Madan, M. S.; John, Sajan

2013-01-01

472

Heavy Metals in Different Fishes from the Middle Eastern Coast of Tunisia  

Microsoft Academic Search

Considerable information has been reported on trace metal concentrations of various fishes in the Mediterranean area, but there is a lack of data in the concentrations of trace metals in fishes from the southern Mediterranean. For this reason, work was done to establish a baseline of heavy metal concentrations on fishes from the coast of Sfax (middle eastern coast of

A. Hamza-Chaffai; M. Roméo; A. El Abed

1996-01-01

473

Differentiation of commercially important flatfish populations along the Portuguese coast: Evidence from morphology and parasitology  

Microsoft Academic Search

The population differentiation of seven flatfish species, Citharus linguatula, Lepidorhombus boscii, Platichthys flesus, Microchirus azevia, Solea lascaris, Solea senegalensis and Solea solea, widely distributed along the eastern north Atlantic and occurring in sympatry along the Portuguese coast was studied using morphological and parasitological data. Fish were obtained from commercial fishing vessels operating in three locations along the Portuguese coast (north,

Joana F. Marques; Célia M. Teixeira; Henrique N. Cabral

2006-01-01

474

Heavy metals in organisms and sediments from Turkish Coast of the Black Sea, 1997–1998  

Microsoft Academic Search

During the period 1997–1998, macroalgae, sea snail, mussel, fish and sediment samples were collected at different stations of the Turkish Black Sea coast in order to establish the concentration of selected heavy metals. Heavy metals analyzed were Cd, Co, Cr, Ni, Zn, Fe, Mn, Pb and Cu. The results showed that the Turkish Black Sea coast is facing heavy metal

S Topcuo?lu; Ç K?rba?o?lu; N Güngör

2002-01-01

475

Comment on ``Anomalous Cold Water Detected Along Mid-Atlantic Coast''  

Microsoft Academic Search

The recent Eos article by Sun et al. [2004] described unusually chilly ocean conditions along the U.S. mid-Atlantic coast in summer 2003 that the authors attributed to stronger than usual upwelling. The stress of alongshore (northward on the North American east coast) wind on the ocean's surface, in concert with Earth's rotation, causes surface water to move offshore and be

Franklin B. Schwing; Mark H. Pickett

2004-01-01

476

Comparative study on foraminifera of east and west coast of India.  

PubMed

The oceanographic conditions of west and east coasts of India provide variations in ecological conditions. Hence, the present study was undertaken to assess the geographic distribution and diversity of foraminifera (Protista) of west and east Coasts of India to gain insights in to ecological conditions that effect their distribution. The intertidal sediment samples, collected for a period of two years from October 2004 to September 2006 were analysed for foraminiferal diversity and sediment characteristics by standard methods. Relatively high densities (west coast--156 to 19,400 g(-1), east coast--37-214 g(-1)) and diversities were observed at all the sites of the West (74 species) compared to the east coast (57 species). Thirty three species were common to both the coasts. Forty one and 24 species were found to be unique to west and east coast, respectively. Foraminifera of west and east coasts form distinct clusters as revealed by Bray-Curtis cluster analysis, indicating distinctly different foraminiferal assemblages. The geographical and oceanographic conditions thus seem to influence a differential diversity of forams. PMID:23734457

Gadi, Subhadra Devi; Patil, Rajashekhar K

2012-09-01

477

Bird Habitat Conservation at Various Scales in the Atlantic Coast Joint Venture1  

Microsoft Academic Search

The Atlantic Coast Joint Venture is a partnership focused on the conservation of habitats for migratory birds within the Atlantic Flyway\\/Atlantic Coast Region from Maine south to Puerto Rico. In order to be effective in planning and implementing conservation in this large and diverse area, the joint venture must work at multiple spatial scales, from the largest - flyways and

Andrew Milliken; Chuck Hayes

478

Legal battles on the California coast: A review of the rules  

Microsoft Academic Search

Notions of private property have both legal and political importance. In California, as elsewhere in the United States, these ideas are changing. The rate and direction of this evolution is not different on the coast. But the intense heat generated by competing coastal interests does tend to illuminate these issues more clearly on the coast. The full range of these

Gerald Bowden

1976-01-01

479

Coast Guard Polar Icebreaker Modernization: Background and Issues for Congress. Updated July 24, 2013.  

National Technical Information Service (NTIS)

The Coast Guard s FY2013 budget initiated a new project for the design and construction of a new polar icebreaker. The Coast Guard s proposed FY2013 budget requested $8 million in FY2013 acquisition funding to initiate survey and design activities for the...

R. O'Rourke

2013-01-01

480

Coast Guard Polar Icebreaker Modernization: Background, Issues, and Options for Congress. Updated September 29, 2010.  

National Technical Information Service (NTIS)

Coast Guard polar icebreakers perform a variety of missions supporting U.S. interests in polar regions. The Coast Guard's two heavy polar icebreakers-Polar Star and Polar Sea-have exceeded their intended 30-year service lives. The Polar Star is not operat...

R. O'Rourke

2010-01-01

481

Coast Guard Polar Icebreaker Modernization: Background, Issues, and Options for Congress. Updated July 2, 2010.  

National Technical Information Service (NTIS)

Coast Guard polar icebreakers perform a variety of missions supporting U.S. interests in polar regions. The Coast Guard's two heavy polar icebreakers-Polar Star and Polar Sea-have exceeded their intended 30-year service lives. The Polar Star is not operat...

R. O'Rourke

2010-01-01

482

Treatment of field cases of East Coast fever with halofuginone lactate  

Microsoft Academic Search

In a series of field trials 48 (55%) of 88 field cases of East Coast fever treated with halofuginone lactate recovered and survived and 40 (45%) died while 31 (86%) of 36 untreated control animals died of East Coast fever and five (14%) recovered. For cases diagnosed and treated early a 100% recovery rate was achieved. A single dose at

B. C. Njau; P. A. Mkonyi; W. C. H. Mleche; J. I. Kitaly; N. C. Maiseli

1985-01-01

483

47 CFR 80.108 - Transmission of traffic lists by coast stations.  

Code of Federal Regulations, 2011 CFR

...2013-10-01 false Transmission of traffic lists by coast stations...80.108 Transmission of traffic lists by coast stations...authorized to transmit lists of call signs in alphabetical order of all...stations for which they have traffic on hand. These traffic...

2013-10-01

484

Mesozoic-Cenozoic Tectonic History of the Southwestern Oregon Coast in Relation to Cordilleran Orogenesis  

Microsoft Academic Search

Mesozoic rocks of the Cordill.eran mobile belt extend to the continental margin on the southwestern Oregon coast. The region has been eugeosynclinal since at least the early Paleozoie, but dominance of continental-type andesites suggests the presence of essentially continental crust throughout its known history. Difficulties in understanding the history of the central Pacific coast have centered around problems of the

R. H. Dott

1965-01-01

485

Holocene Tsunami deposits associated with earthquakes along Pacific coast, northeast Japan  

Microsoft Academic Search

We investigated Holocene tsumami deposits along the Pacific coast of northeast Japan in order to define the ages and source areas of earthquakes generating large tsunamis. Sediment cores were collected by using geoslicers and hand augers at alluvial lowlands interpreted by aerial photographs, and ages of deposits were dated by radiocarbon methods and tephrochronology. Pacific coast of northeast Japan faces

H. Suzuki; T. Imaizumi; T. Ishiyama; T. Miyauchi; K. Kagohara; T. Haraguchi; N. Marushima; T. Omachi

2009-01-01

486

IENCE - A CASE STUDY: THE NORTHERN GOLD COAST BEACH PROTECTION STRATEGY  

Microsoft Academic Search

Natural environments generally have a limited capacity to support a level of sustainable use. Therefore, as use levels increase, natural systems can no longer sustain man's impacts without management. The Gold Coast is Australia's premier tourist destination and offers some of the best and most popular surfing beaches in Australia. Tourism is the Gold Coast's largest industry however it is

Libby BOAK; John MCGRATH; L. Angus JACKSON