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1

Geochemistry and age of Ivory Coast tektites and microtektites  

NASA Astrophysics Data System (ADS)

Ivory Coast tektites were first reported in 1934 from a geographically restricted area at Ivory Coast, West Africa. Although some additional specimens have been found later, the total number remains small (a few hundred). The Bosumtwi impact crater in Ghana is most likely the source crater for the Ivory Coast tektites, based on the finding that the tektites and the crater have the same age as well as similar isotopic and chemical compositions. In addition to tektites on land, microtektites were found in (so far) eleven deep-sea cores off the West African coast, between about 9°N and 11°S and 0° and 23°W, defining the extent of the Ivory Coast tektite strewn field. In this study we analyzed eleven Ivory Coast tektites for their major and trace element composition, studied their petrographical characteristics, provided major element data for 111 microtektites, and major and trace element data for four microtektites. We determined the 40Ar39Ar step-heating age of five Ivory Coast tektites and four microtektites and obtained fission-track dates for ten tektites and one Bosumtwi impact glass. The tektites have very small intersample and intrasample variations of their major and trace element composition. 111 Ivory Coast microtektites from eleven cores were analyzed for their major element compositional range. Their compositional range is significantly wider than that of the Ivory Coast tektites, but the majority of all microtektites have compositions very similar to those of the tektites (within a factor of 1.2). Trace element compositions of the tektites also show little variation between samples. The samples do not show any distinct Eu anomaly in the REE patterns. This characteristic, as well as the high absolute REE abundances and La NYbN ratios of about 8, indicate that Archean rocks are plausible source rocks. The major and trace element contents of four individually analyzed Ivory Coast microtektites show compositions that are very similar to those of the Ivory Coast tektites. However, the microtektites contain >20 rel% higher abundances of some of the lithophile and siderophile trace elements, such as Sc, Cr, Co, Ni, Sr, Zr, Ba, Hf, Ta, Th, and the REEs. These differences are probably due to incorporation of a higher abundance of accessory trace minerals with the microtektite-forming melt. The Ivory Coast microtektites also have a uniform internal composition. Duplicate 40Ar39Ar step-heating age analyses were performed on five tektites. The best age estimate for the formation age of the tektites was calculated by taking a weighted average of the ages from the plateau portions of the runs, resulting in an age of 1.1 ± 0.05 Ma. We also tried to date four microtektites by 40Ar39Ar age analyses, but their young age and small sample size makes it impossible to assign a reliable age to the microtektites. One run yielded satisfactory results that were similar to the tektite age. In addition, we determined the fission-track ages for ten individual Ivory Coast tektite samples and for one impact glass sample from the Bosumtwi crater. The track-size corrected ages for the Ivory Coast tektites ranged from 0.91 to 1.18 Ma, resulting in an average fission-track age of 1.05 ± 0.11 Ma. This age is, within errors, identical to that of the Bosumtwi impact glass at 1.03 ± 0.11 Ma, and to the 40Ar39Ar age of 1.1 ± 0.05 Ma. The preferred age of the Ivory Coast tektite event is 1.07 Ma.

Koeberl, Christian; Bottomley, Richard; Glass, Billy P.; Storzer, Dieter

1997-04-01

2

Oxygen Isotope Studies of Ivory Coast Tektites and Impactite Glass from the Bosumtwi Crater, Ghana  

Microsoft Academic Search

Oxygen isotope analyses were obtained for six Ivory Coast tektites, two samples of Bosumtwi Crater glass, and two new moldavites. The Ivory Coast tektites are 2 to 5 per mil richer in oxygen-18 than other known tektites, and they are similar in oxygen-18 content to the impactite glass from the nearby Bosumtwi Crater. These data are compatible with a terrestrial

Hugh P. Taylor Jr.; Samuel Epstein

1966-01-01

3

Detection of a meteoritic component in ivory coast tektites with rhenium-osmium isotopes.  

PubMed

Measurement of rhenium (Re) and osmium (Os) concentrations and Os isotopic compositions in Ivory Coast tektites (natural glasses with upper crustal compositions that are ejected great distances during meteorite impact) and rocks from the inferred source crater, Lake Bosumtwi, Ghana, show that these tektites incorporate about 0.6 percent of a meteoritic component. Analysis of elemental abundances of noble metals alone gives equivocal results in the detection of meteoritic components because the target rocks already have relatively large amounts of noble metals. The Re-Os system is ideally suited for the study of meteorite impacts on old continental crust for three reasons. (i) The isotopic compositions of the target rocks and the meteoritic impactor are significantly different. (ii) Closed-system mixing of target rocks and meteorites is linear on Re-Os isochron diagrams, which thus permits identification of the loss of Re or Os. (iii) Osmium isotopic compositions are not likely to be altered during meteorite impact even if Re and Os are lost. PMID:17758170

Koeberl, C; Shirey, S B

1993-07-30

4

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

5

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

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. PMID:21037794

Ferrière, Ludovic; Koeberl, Christian; Thöni, Martin; Liang, Chen

2010-08-01

6

Pepper veinal mottle virus in Ivory Coast  

Microsoft Academic Search

A mosaic and stunt disease of chilli pepper (Capsicum frutescens) in Ivory Coast was found to be caused by pepper veinal mottle virus, a member of the potato virus Y group, recently described from chilli pepper in Ghana. The Ivory Coast isolate was first transmitted by aphids toPhysalis floridana and subsequently maintained by mechanical inoculation inP. floridana andNicotiana megalosiphon. The

J. J. De Wijs

1973-01-01

7

North-American Microtektites are More Oxidised than Tektites  

NASA Astrophysics Data System (ADS)

North American (NA) microtektites display Fe3+/Fetot ratios from 0 to 0.75, much higher than microtektites from Ivory Coast and Australasian strewn fields. FTIR determined water content compare well with NA tektites, suggesting lack of alteration.

Giuli, G.; Cicconi, M. R.; Eeckhout, S. G.; Koeberl, C.; Glass, B. P.; Pratesi, G.; Paris, E.

2012-09-01

8

Zhamanshin and Aouelloul - Craters produced by impact of tektite-like glasses?  

Microsoft Academic Search

It is shown that the enhanced abundance of siderophile elements and chromium in tektite-like glasses from the two impact craters of Zhamanshin and Aouelloul cannot be explained as a result of contamination of the country rock by meteorites nor, probably, comets. The pattern is, however, like that found in certain Australasian tektites, and in Ivory Coast tektites. It is concluded,

John A. O'Keefe

1987-01-01

9

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

10

Antiparasitic activities of medicinal plants used in Ivory Coast  

Microsoft Academic Search

During an ethnopharmacological survey of antiparasitic medicinal plants used in Ivory Coast, 17 plants were identified and collected. Polar, non-polar and alkaloidic extracts of various parts of these species were evaluated in vitro in an antiparasitic drug screening. Antimalarial, leishmanicidal, trypanocidal, antihelminthiasis and antiscabies activities were determined. Among the selected plants, Anogeissus leiocarpus and Terminalia glaucescens were strongly active against

T Okpekon; S Yolou; C Gleye; F Roblot; P Loiseau; C Bories; P Grellier; F Frappier; A Laurens; R Hocquemiller

2004-01-01

11

Socioeconomic Rivalry and National Competence in Ivory Coast  

Microsoft Academic Search

Ivory Coast, a highly multilingual nation, continues to use French as the exclusive national language. Since French is seen as the key to economic advancement, and access to French has varied ethnically, Ivorians were expected to display sensitivity to variation in French competence, as people have shown toward linguistic variation in Canada and the United States. A modified matched guise

Gayle H. Partmann

1979-01-01

12

Nd and SR isotopic evidence for the origin of tektite material from DSDP site 612 off the New Jersey coast  

NASA Astrophysics Data System (ADS)

The Sr and Nd isotopic composition was analyzed for samples from the Late Eocene tektite material from DSDP site 612 off the New Jersey coast, to determine whether these tektites may be assigned to the North-American-tektite group. It was found that the ranges of the Sr-87/Sr-86 and the Nd-143/Nd-144 ratios were much wider than in the 612-tectite material than in the tightly constrained group of North American tektites and microtektites and were significantly different from ratios in other groups of tektites. Results indicate that the DSDP tektites were formed from a chemically and isotopically heterogeneous material, in a regime that was different from that of other groups of tektites. It is suggested that the 612-tectites and the North American tektites were either formed by impacts of several bolides in the same general area or by a single impact event that sampled different layers.

Stecher, O.; Ngo, H. H.; Papanastassiou, D. A.; Wasserburg, G. J.

1989-06-01

13

North-American Microtektites are More Oxidised than Tektites  

NASA Astrophysics Data System (ADS)

Microtektites from the Australasian and Ivory Coast strewn fields (SF) show low values of the Fe^3^+/Fe_t_o_t ratio, comparable to tektites from the same SF. In contrast, microtektites from the North American SF show a wider range (from 0 to 0.75).

Giuli, G.; Cicconi, M. R.; Eeckhout, S. G.; Koeberl, C.; Glass, B. P.; Pratesi, G.; Paris, E.

2012-03-01

14

Antiparasitic activities of medicinal plants used in Ivory Coast.  

PubMed

During an ethnopharmacological survey of antiparasitic medicinal plants used in Ivory Coast, 17 plants were identified and collected. Polar, non-polar and alkaloidic extracts of various parts of these species were evaluated in vitro in an antiparasitic drug screening. Antimalarial, leishmanicidal, trypanocidal, antihelminthiasis and antiscabies activities were determined. Among the selected plants, Anogeissus leiocarpus and Terminalia glaucescens were strongly active against Plasmodium falciparum. Lawsonia inermis, selectively prescribed against trypanosomiasis shows interesting trypanocidal activities as did other 15 plants. Anthelmintic activities were found for 10 active species and 2 species (Uvaria afzelli and Monodora myristica) were actives against mites. PMID:14698515

Okpekon, T; Yolou, S; Gleye, C; Roblot, F; Loiseau, P; Bories, C; Grellier, P; Frappier, F; Laurens, A; Hocquemiller, R

2004-01-01

15

[Toxic waste and health effects in Abidjan City, Ivory Coast].  

PubMed

Accidental chemical pollution can have serious effects on human health. In 2006, the tanker vessel Probo Koala discharged hundreds of tons of toxic waste at many sites in Abidjan City, Ivory Coast. In the following days and weeks, thousands of people presented signs of poisoning. Analysis of the waste demonstrated the presence of toxic chemicals such as mercaptans and hydrogen sulfide. The final toll was 8 dead, dozens hospitalized, and about 100,000 seeking medical advice. This event provides evidence that, like international immigration, exportation of industrial waste can result in serious public health hazards. PMID:18300527

Bohand, X; Monpeurt, C; Bohand, S; Cazoulat, A

2007-12-01

16

High precision elemental abundances for tektites and crater glasses-thorium, uranium and potassium  

Microsoft Academic Search

Thorium, uranium and potassium mean abundances for 15 Ivory Coast tektites, 23 Australites, 10 Philippinites, 25 Thailandites,\\u000a 16 Bediasites and 12 Moldavites are reported. Abundances are also reported for Muong Nong type tektites, Nordlinger Ries crater\\u000a glass, Bosumtwi crater glass and Darwin crater glass. Previous measurements are reviewed. The value of the present work lies\\u000a in the fact that high

J. Yellin; I. Perlman; W. Gentner; O. Müller

1983-01-01

17

Livestock and Meat Marketing in West Africa. Volume III: Ivory Coast and Mali.  

National Technical Information Service (NTIS)

Mali is the Sahel's principal meat and livestock supplier to coastal West Africa; the Ivory Coast is the latter region's main consumer of Sahelian meat products. This report studies West African livestock and meat marketing and provides sector reports for...

C. Delagdo J. Staaz

1980-01-01

18

Technology and Educational Reform: The Case of Ivory Coast (Part II).  

National Technical Information Service (NTIS)

This article examines the evaluative aspects of Ivory Coast's educational television system. It is less an analysis of evaluation results than a description of the types of evaluation data being generated. It discusses the development of the evaluation co...

S. H. Grant

1975-01-01

19

Phospholipid composition of lipid seed crystal isolates from ivory coast cocoa butter  

Microsoft Academic Search

Seed crystals isolated from Ivory Coast cocoa butter were shown to differ in chemical and thermal characteristics from solidified\\u000a Ivory Coast butter. Higher concentrations of complex lipids in the seed crystals have led to speculation on the role these\\u000a polar molecules play in lipid crystallization events. Phospholipids separated from lipid seed crystal isolates were twelve-fold\\u000a more concentrated than the original

Doris H. Arruda; Paul S. Dimick

1991-01-01

20

[Fattening diet and metabolic syndrome in Ivory Coast].  

PubMed

Metabolic syndrome is a particular state of morbidity characterized by the association of several factors contributing to the increase in the cardiovascular risk. This constellation of factors associates the glucose intolerance and its corollary the hyperglycemia, the overweight, the hypertriglyceridemia, the fall of the HDL-cholesterol and arterial hypertension. In Africa, it is difficult to evaluate in the actual prevalence of the metabolic syndrome. The present study aims was to determine the prediction and prevalence of the metabolic syndrome in a group of nurse--lactating mothers--in Abidjan (Ivory Coast), who were submitted at a particularly rich food lipids. Our populations were composed to 100 lactating women, and we used the definition of « National Cholesterol Education Program-Adult Treatment Panel III ». The results obtained showed that the prevalence of the metabolic syndrome is 7%, and 30% of them are presented an abdominal obesity. Our populations were composed to 100 lactating women, which belong to the Ethie where the habit are to eat, after giving birth, high foods lipids for 6 months. We used the definition of "National Cholesterol Education Program-Adult Treatment Panel III" to determine the prevalence of metabolic syndrome in this population and see if the diet has a negative influence. The results obtained showed that the prevalence of the metabolic syndrome is 7%, and 30% of them are presented an abdominal obesity. The risk to develop a metabolic syndrome in this specific population of nurse is particularly big and it's linked to their eating habits. PMID:23587589

Hauhouot-Attoungbré, Marie Laure; Yayo, Eric Sagou; Konan, Jean-Louis; Koné, Fatoumata; Siara, Eugénie; Monnet, Dagui

21

Oryctes monoceros Trapping with Synthetic Pheromone and Palm Material in Ivory Coast  

Microsoft Academic Search

Oryctes monoceros is the most serious pest in coconut plantations, causing up to 40% damage in tropical Africa, especially in Ivory Coast. With a view to reducing pest populations by olfactory trapping, field trials were carried out to assess the efficiency of a synthetic aggregation pheromone: ethyl 4-methyloctanoate (1), 4-methyloctanoic acid (2), a related volatile produced by males, and decaying

Kouassi Allou; Jean-Paul Morin; Philippe Kouassi; François Hala N’klo; Didier Rochat

2006-01-01

22

An ethnic polarization measure with an application to Ivory Coast data  

Microsoft Academic Search

In this paper, we suggest a framework for the analysis of ethnic polarization. This framework allows for the measurement of ethnic or religious polarization. We apply our measure to Ivory Coast and find a surprising result as the ethnic polarization decreased in years preceding the conflict in the country. However, further decomposition of the ethnic polarization index allows us to

Paul Makdissi; Thierry Roy; Luc Savard

2008-01-01

23

Predatory elites, rents and cocoa: a comparative analysis of Ghana and Ivory Coast  

Microsoft Academic Search

This article explores the way in which the cocoa sector shaped the rent-seeking behaviour of ruling elites and rural producers in Ghana and Ivory Coast. Analysis of their rent-seeking behaviour is done in two different contexts. The first context is a boom period in which the exploitation of the rent generated from cocoa production leads elites and rural producers to

Dwayne Woods

2004-01-01

24

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

Microsoft Academic Search

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

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

2006-01-01

25

Ivory coast toxic waste dumping dispute: A comparison of the graph model and drama theory  

Microsoft Academic Search

Two different approaches to conflict analysis are applied to the serious conflict arising over the illegal dumping of toxic waste in the former capital of Ivory Coast in August 2006, in order to compare their capabilities for gaining strategic insights into this dispute. More specifically, the Graph Model for Conflict Resolution and Drama Theory are employed to systematically study the

Kaixian Hu; Keith W. Hipel; Liping Fang

2007-01-01

26

Economics of Cattle and Meat Marketing in the Ivory Coast: A Summary.  

National Technical Information Service (NTIS)

In recent years, the market for cattle and meat in the Ivory Coast has changed markedly as a result of the drought in the Sahel and shifts in the world beef market. Based on 18 months of field research, this paper analyzes these changes and identifies con...

J. Staatz

1980-01-01

27

The Political Ecology of Peasant-Herder Conflicts in the Northern Ivory Coast  

Microsoft Academic Search

Following the great Sahelian drought of the early 1970s, an unprecedented number of Fulani pastoralists immigrated to the Ivory Coast with their cattle. Although welcomed by the Ivorian government for their contribution to national beef production, the Fulani's presence has been bitterly opposed by Senufo peasants in the savanna region over the problem of uncompensated crop damage. I examine the

Thomas J. Bassett

1988-01-01

28

Cost Analysis of the Primary Instructional Television Program in the Ivory Coast.  

ERIC Educational Resources Information Center

|This study of the costs of educational reform undertaken in the Ivory Coast in 1971 focuses on the primary education level (children aged 7-12). Designed to ensure that 100 percent of the primary school-age children receive an education and to adapt the content of that education to the characteristics and needs of Ivorians, this reform entailed…

Eicher, Jean-Claude; Orivel, Francois

29

Zhamanshin and Aouelloul - Craters produced by impact of tektite-like glasses?  

NASA Astrophysics Data System (ADS)

It is shown that the enhanced abundance of siderophile elements and chromium in tektite-like glasses from the two impact craters of Zhamanshin and Aouelloul cannot be explained as a result of contamination of the country rock by meteorites nor, probably, comets. The pattern is, however, like that found in certain Australasian tektites, and in Ivory Coast tektites. It is concluded, in agreement with earlier suggestions by Campbell-Smith and Hey, that these craters were formed by the impact of large masses of tektite-like glass, of which the glasses which were studied are fragments. It follows that it is necessary, in considering an impact crater, to bear in mind that the projectile may have been a glass.

O'Keefe, John A.

1987-09-01

30

Seasonal variability of methane in the rivers and lagoons of Ivory Coast (West Africa)  

Microsoft Academic Search

We report a data-set of dissolved methane (CH4) in three rivers (Comoé, Bia and Tanoé) and five lagoons (Grand-Lahou, Ebrié, Potou, Aby and Tendo) of Ivory Coast (West\\u000a Africa), during the four main climatic seasons (high dry season, high rainy season, low dry season and low rainy season).\\u000a The surface waters of the three rivers were over-saturated in CH4 with

Y. J. M. Koné; G. Abril; B. Delille; A. V. Borges

2010-01-01

31

Seasonal Variability of Carbon Dioxide in the Rivers and Lagoons of Ivory Coast (West Africa)  

Microsoft Academic Search

We report partial pressure of CO2 (pCO2) and ancillary data in three rivers (Bia, Tanoé, and Comoé) and five lagoons (Tendo, Aby, Ebrié, Potou, and Grand-Lahou)\\u000a in Ivory Coast (West Africa), during four cruises covering the main climatic seasons. The three rivers were oversaturated\\u000a in CO2 with respect to atmospheric equilibrium, and the seasonal variability of pCO2 was due to

Y. J. M. Koné; G. Abril; K. N. Kouadio; B. Delille; A. V. Borges

2009-01-01

32

Market orientation in Ivory Coast: measurement validity and organizational antecedents in a sub-Saharan African economy  

Microsoft Academic Search

Despite renewed interest in the cross-national implementation of market orientation, there is hardly any consideration of this practice in sub-Saharan Africa. The present study examines the validity of two widely used market orientation scales from Kholi and Jaworski and Narver and Slater, in Ivory Coast, and the ability of both scales developed from explained market orientation practices among Ivorian firms.

Cristian Chelariu; Abdoulaye Ouattarra; Kofi Q. Dadzie

2002-01-01

33

"Tele Pour Tous" in Rural Ivory Coast: Audience, Impact, Perceptions: Report of Two Surveys Conducted in January and April, 1977.  

ERIC Educational Resources Information Center

|This report presents the results of two surveys conducted in January and April 1977 in the Ivory Coast to assess the impact of the "Tele Pour Tous" programs on rural audiences in terms of awareness, learning, and action. Descriptions of the socio-economic characteristics of the audience and their viewing patterns were sought, and attempts were…

Etaix, Mireille; Lenglet, Frans

34

Tele Pour Tous in Rural Ivory Coast: Audience, Impact, Perceptions: Report of Two Surveys Conducted in January and April, 1977.  

National Technical Information Service (NTIS)

This report presents the results of two surveys conducted in January and April 1977 in the Ivory Coast to assess the impact of the 'Tele Pour Tous' programs on rural audiences in terms of awareness, learning, and action. Descriptions of the socio-economic...

M. Etaix F. Lenglet

1977-01-01

35

[Malaria in military personnel: the case of the Ivory Coast in 2002-2003].  

PubMed

French troops were sent to the Ivory Coast on September 22, 2002 within the framework of Operation Unicorn in response to the political unrest. From September 22 to October 20, a total of 37 cases of malaria were reported, i.e., 35.7 cases per 1000 man-months. As of October 11, the central headquarters of the Armed Services Health Corps decided to use doxycycline as the exclusive agent for drug prophylaxis in military personnel on duty in the Ivory Coast and to enhance vector control measures. The incidence of malaria decreased to 2 cases per 1000 man-months at the sixth month. A recrudescence of malaria to 15 cases per 1000 man-months was observed with the rainy season in April. During this period one person presenting severe malaria with coma required emergency evacuation to France. In May 2003, several studies were undertaken to determine the factors that caused this recrudescence. These studies included surveys to evaluate awareness concerning malaria and monitor compliance with drug prophylaxis and tolerance of doxycycline, a case-control study to identify factors related to malarious episodes and an entomological study. Awareness of malaria was high with 75% of the 477 respondents stating that malaria could be transmitted by single mosquito bite. The case-control study showed a correlation between occurrence of malarious bouts and non-compliance with drug prophylaxis (p < 10(-5)). The odds-ratio was 3.05 (95% confidence interval, 1.52-6.14) for subjects claiming zero to one incident of non-compliance per week and 7.51 (IC95%, 3.24-17.40) for those claiming more than one incident of non-compliance per week. Tolerance of doxycyline was good since 72% of respondents reported no adverse effects. The main vector was Anopheles gambiae. The number of bites per man per night ranged from 25 to 2 and the number of infected bites ranged from 2 to 3 per week. Treatment was initiated promptly using quinine at a total dose of 25 mg/kg in 3 daily doses for 7 days by the intravenous then oral route. This experience shows that malaria remains a major concern for military forces, that standardization of preventive measures in emergency situations is needed, and that enhanced vector control, verification of compliance with drug prophylaxis and prompt treatment based on the presence of a physician in each emergency outpost is crucial. These recommendation must be applied to all French military personnel in the Ivory Coast. PMID:14579467

Migliani, R; Josse, R; Hovette, P; Keundjian, A; Pages, F; Meynard, J-B; Ollivier, L; Sbai Idrissi, K; Tifratene, K; Orlandi, E; Rogier, C; Boutin, J-P

2003-01-01

36

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

37

Cost Analysis of Non-Formal ETV Systems: A Case Study of the 'Extra-Scolaire' System in the Ivory Coast.  

National Technical Information Service (NTIS)

The Extra/Scolaire (E/S) educational television (ETV) system of the Ivory Coast produces television programming dealing with a wide variety of topics concerning agriculture, politics, economics, and culture, directed primarily toward rural adult audiences...

S. J. Klees

1977-01-01

38

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

Microsoft Academic Search

OBJECTIVE: Our purpose was to assess the impact of human immunodeficiency virus infection on pelvic inflammatory disease.STUDY DESIGN: A case-control study was performed in Abidjan, Ivory Coast, women with pelvic inflammatory disease, 57 seropositive and 113 seronegative for the human immunodeficiency virus. Women underwent an interview, physical examination, pelvic ultrasonography, and laboratory testing.RESULTS: Seropositive women more often had an oral

Munkolenkole C. Kamenga; Kevin M. De Cock; Michael E. St. Louis; Coulibaly K. Touré; Sidibe Zakaria; Jean Marie N'gbichi; Peter D. Ghys; King K. Holmes; David A. Eschenbach; Helene D. Gayle; Joan K. Kreiss

1995-01-01

39

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

40

Characterisation of Kaolinitic Clays from the Ivory Coast: Identification of Structural Fe  

NASA Astrophysics Data System (ADS)

Five clays from four different deposits in the Ivory Coast (Adattié, Nieki, Grand-Bassam, Nigui-Saff) were studied by 57Fe Mössbauer spectroscopy and electron paramagnetic resonance (EPR) at room temperature. Their chemical compositions were determined by X-ray fluorescence and the most important crystalline phases were identified by X-ray diffraction. In these natural clays, kaolinite is the dominant mineral phase with minor amounts of other minerals including quartz, haematite, goethite, lepidocrocite and illite. Room-temperature 57Fe Mössbauer spectra of the samples from Nieki, Adattié and Nigui-Saff show mainly a broad quadrupole-split doublet which indicates that iron is essentially present as Fe(III). Samples from Grand-Bassam contain important amounts of goethite (?-FeOOH) and lepidocrocite (?-FeOOH). Some samples from Nigui-Saff contain large amounts of haematite. Clays from Nieki and Adattié are characterised by very low concentrations of iron oxides or hydroxides, and by small amounts of structural Fe(II) in the kaolinite lattice. Oxidation states and lattice sites of structural iron in the kaolinites were determined by 57Fe Mössbauer spectra recorded after iron extraction with dithionite-citrate-bicarbonate (DCB). The results were confirmed by electron paramagnetic resonance (EPR) measurements.

Sei, J.; Abba Touré, A.; Olivier-Fourcade, J.; Quiquampoix, H.; Staunton, S.; Jumas, J. C.; Womes, M.

2004-09-01

41

Regulation of business activities of petroleum contractors in Cameroon, Congo, Gabon, and Ivory Coast  

SciTech Connect

Foreign companies engaging in business in Cameroon, Congo, Gabon, and Ivory Coast are subject to a broad range of regulations. This article deals only with those aspects of the regulations that are most important to petroleum contractors intending to engage in business in these countries. The regulator scheme actually applicable in a given case will depend on the legal structure through which a corporation operates. An American corporation may envisage engaging in business on a long-term basis through a local subsidiary or branch. On the other hand, it may wish only to perform temporary activities pursuant to one or more fixed-duration contracts with petroleum companies operating in one of countries. Each of these situations is dealt with. Common features of each area of regulation were described and the differences in regulations were presented. These topics were included: exchange control regulation, corporate forms of business association, authorization to engage in business, requirement of government or local participation in capital, investment code incentives, labor law requirements, taxation of corporations, taxation of profits, taxation of income from movable capital, taxation of amounts paid abroad as technical assistance fees, royalties and similar compensation, turnover taxes, payroll taxes, taxation of business performed without forming a local company or branch, taxation of employees and Social Security contributions. (DP)

Frilet, M.; Newman, J.

1982-03-01

42

Mental health, childhood abuse and HIV sexual risk behaviour among university students in Ivory Coast  

PubMed Central

Background Little focus has been paid to the role of poor mental health and childhood abuse among young people with regard to human immunodeficiency virus (HIV) risk behaviour and HIV prevention in Africa. The aim of this study was to determine the association between mental health, childhood abuse and HIV sexual risk behaviour among a sample of university students in Ivory Coast. Methods A cross-sectional survey was conducted with undergraduate students that were recruited randomly from classes at the Félix Houphouët Boigny University of Cocody. The sample included 824 university students (50% men and 50% women), with a mean age of 23.7 years (SD = 2.7). Results Of the 824 university students who completed the survey, 17.6% reported depression, 10.8% screened positive for post-traumatic stress disorder, 8.3% reported at least monthly heavy episodic drinking, 13.5% reported childhood physical abuse and 4.7% sexual abuse, 33.9% had two or more sexual partners in the past 12 months, 66.3% had inconsistent condom use, 23.6% had alcohol use in the context of sex and 16.7% had a history of a sexually transmitted infection In multivariable analysis among men, lack of religiousness and alcohol use in the context of sex were associated with HIV risk behaviour, and among women, poorer family background, experience of sexual and physical partner violence, alcohol use in the context of sex and depression were associated with HIV risk behaviour. Conclusions Poor mental health (depression) including alcohol use and partner violence was found to be associated with HIV risk behaviour. Coordinated mental health and sexual and reproductive health services to meet the needs of university students would be desirable.

2013-01-01

43

Cost Analysis of Non-Formal ETV Systems: A Case Study of the "Extra-Scolaire" System in the Ivory Coast.  

ERIC Educational Resources Information Center

|Building on previous evaluations of the ETV systems--both formal and informal--of the Ivory Coast, this study examines the system costs of the "Extra Scolaire" (E/S) program for rural adults. Educational television is utilized through the Ivorian primary system, and battery operated televisions have been widely distributed to schools in rural…

Klees, Steven J.

44

Halogens in Tektites and Impact Glasses: New Results and a Critical Review  

NASA Astrophysics Data System (ADS)

We analyzed a variety of glasses from different localities and some related basement rocks. Our aim was to complete the existing database for F, Cl, Br, and I. For the first time Cl, Br, and I data on Darwin Glass are presented and new values for I are reported on Muong Nong-type tektites, Bediasites, Ivory Coast tektites, Libyan Desert Glasses, and Zhamanshinites. Also we reevaluated existing analysis cited in the literature to compare them to our values The halogens contents were determined by neutron activation analysis followed by a simultaneous radiochemical separation by pyrohyrolysis (Langenauer et al. 1992). Analytical problems seem to be a major source of error of many literature values. The tektite and impact glasses show similar australite normalization patterns within their groups and distinct patterns among the groups. The Muong Nong tektites show a volatilization behavior of I > Br > Cl > F, which is compatible with the volatilization behavior of the halogens under oxidizing conditions in a melt. Comparing Darwin Glass with the possible basement rock of Darwin crater we conclude that at least two processes are needed to control the abundance of the halogens: First a selective volatilization of F and then a removal of the halogens with I > Br > Cl > F from the melt. For Darwin Glass an incomplete mixing model is included to explain the observed facts satisfyingly. We think that all the tektites and impact glasses show a similar behavior of the halogens. The lack of data on the composition of the source material makes it difficult to prove the validity of this model. References. LANGENAUER M. AND KRAHENBUHL U., FURRER V., AND WYTTENBACH A. (1992) Determination of fluorine, chlorine, bromine, and iodine in seven geochemical reference samples. Geostand. Newslett., 16, 41-44. F Cl Br I Sample (ppm) (ppm) (ppm) (ppm) Bediasite BED 8401 9+-1 6.3+-0.3 0.07+-0.01 0.026+-0.005 Ivory Coast IVC 2069 22+-2 4.2+-0.2 0.55+-0.02 0.013+-0,006 Muong Nong MN 5425-6 117+-5 65+-3 0.65+-0.03 0.54+-0.02 Darwin Glass DG 8706 26+-2 7.2+-0.3 0.22+-0.02 0.031+-0.004 DG mix basement 514+-20 19.6+-1.1 0.54+-0.02 0.079+-0.01 rock Liby Des. Glass LYD 8501 7+-1 7+-1 0.11+-0.02 0.019+-0.005 Zhamanshinite Zh 62/3b 96+-4 27+-1 0.12+-0.03 0.036+-0.009

Meisel, T.; Langenauer, M.; Krahenbuhl, U.

1992-07-01

45

Paleoclimatic and deforestation effect on the chemical and isotopic composition of the coastal fresh groundwater resources of South-east Ivory Coast  

Microsoft Academic Search

Since a half of century, the forest surface area of the South Ivory Coast has been decreased for the benefit of agriculture (15 000 km2 in 1993 versus 83 000 km2 in 1955-1958). This area also undergoes climate change. Vegetation cover has gradually changed from rainforests (C3 plants) to savanna (C4 plants) and agricultural plants. In the Abidjan area (5.00-6.00°N,

B. Adiaffi; C. Marlin; O. M.-S. Yei; M. Massault; A. Noret; J. Biemi

2009-01-01

46

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

NASA Astrophysics Data System (ADS)

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 7290 km2 (90 km×81 km). The fracturing network is dense and well connected, without a marked fracture direction. A data base comprising 118 transmissivity (T) values and 154 specific capacity (Q/s) values was compiled. A significant empirical relationship between T and Q/s was found, which enabled the transmissivity data to be supplemented. The variographic analysis of the two variables showed that the variograms of T and Q/s (which are lognormal variables) are much more structured than those of log T and log Q/s (which are normal variables). This result is contrary to what was previously published and raises the question whether normality is necessary in geostatistical analysis. Several input and geostatistical estimations of the transmissivity were tested using the cross validation procedure: measured transmissivity data; supplemented transmissivity data; kriging; cokriging. The cross validation results showed that the best estimation is provided using the kriging procedure, the transmissivity field represented by the whole data sample (measured+estimated using specific capacity) and the structural model evaluated solely on the measured transmissivity. The geostatistical approach provided in fine a reliable estimation of the transmissivity of the Man Danané aquifer, which will be used as an input in forthcoming modelling.

Razack, Moumtaz; Lasm, Théophile

2006-06-01

47

[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

2010-07-14

48

Combined analysis of  Cymbopogon giganteus Chiov. leaf oil from Ivory Coast by GC\\/RI, GC\\/MS and  13C-NMR  

Microsoft Academic Search

The composition of the essential oil isolated by hydrodistillation from the leaves of Cymbopogon giganteus Chiov. growing wild in Ivory Coast, was determined by GC\\/RI, GC\\/SM and 13C-NMR after fractionation on silica gel. The oil was characterized by high contents of trans- and cis-p-mentha-2,8-dien-1-ols (18.4% and 8.7%, respectively), cis- and trans-p-mentha-1(7),8-dien-2-ols (16.0% and 15.7% respectively), and limonene (12.5%). Forty-six components

Jean Brice Boti; Alain Muselli; Félix Tomi; Gérard Koukoua; Thomas Yao N’Guessan; Jean Costa; Joseph Casanova

2006-01-01

49

Palaeoproterozoic high-pressure granulite overprint of the Archaean continental crust: evidence for homogeneous crustal thickening (Man Rise, Ivory Coast)  

NASA Astrophysics Data System (ADS)

The character of mountain building processes in the Palaeoproterozoic times is subject to much debate. The local observation of Barrovian-type assemblages and high-pressure granulite relics in the Man Rise (Côte d'Ivoire), led some authors to argue that Eburnean (Palaeoproterozoic) reworking of the Archaean basement was achieved by modern-style thrust-dominated tectonics (e.g., Feybesse & Milési, 1994). However, it has been suggested that crustal thickening and subsequent exhumation of high-pressure crustal rocks can be achieved by virtue of homogeneous, fold-dominated deformation of hot crustal domains even in Phanerozoic orogenic belts (e.g., Schulmann et al., 2002; 2008). We describe a mafic granulite of the Kouibli area (Archaean part of the Man Rise, western Ivory Coast) that displays a primary assemblage (M1) containing garnet, diopsidic clinopyroxene, red-brown pargasitic amphibole, plagioclase (andesine), rutile, ilmenite and quartz. This assemblage is associated with a subvertical regional foliation. Symplectites that develop at the expense of the M1 assemblage contain orthopyroxene, clinopyroxene, plagioclase (bytownite), green pargasitic amphibole, ilmenite and magnetite (M2). Multiequilibrium thermobarometric calculations and P-T pseudosections calculated with THERMOCALC suggest granulite-facies conditions of ca. 13 kbar, 850°C and <7 kbar, 700-800°C for M1 and M2, respectively. In agreement with the qualitative information obtained from reaction textures and chemical zoning of minerals, this suggests an evolution dominated by decompression accompanied by moderate cooling. A Sm-Nd garnet - whole-rock age of 2.03 Ga determined on this sample indicates that this evolution occurred during the Palaeoproterozoic. We argue that from the geodynamic point of view the observed features are best explained by homogeneous thickening of the margin of the Archaean craton, re-heated and softened due to the accretion of hot, juvenile Palaeoproterozoic crust, as well as coeval intrusion of juvenile magmas. Crustal shortening was mainly accommodated by transpressive shear zones and by lateral crustal spreading rather than large-scale thrust systems. The occurrence of high-pressure granulites does not imply thrust-dominated tectonics. Feybesse, J.-L. & Milési, J.-P., 1994. The Archean/Proterozoic contact zone in West Africa: a mountain belt of décollement thrusting and folding on a continental margin related to 2.1 Ga convergence of Archean cratons? Precambrian Research, 69, 199-227. Schulmann, K., Schaltegger, U., Ježek, J., et al. 2002. Rapid burial and exhumation during orogeny: thickening and synconvergent exhumation of thermally weakened and thinned crust (Variscan orogen in Western Europe). American Journal of Science, 302, 856-879. Schulmann, K., Lexa, O., Štípská, P. et al., 2008. Vertical extrusion and horizontal channel flow of orogenic lower crust: key exhumation mechanisms in large hot orogens? Journal of Metamorphic Geology, 26(2), 273-297.

Pitra, Pavel; Kouamelan, Alain N.; Ballèvre, Michel; Peucat, Jean-Jacques

2010-05-01

50

The role of savannas in the terrestrial Si cycle: A case-study from Lamto, Ivory Coast  

NASA Astrophysics Data System (ADS)

Savannas currently occupy a fifth of the earth's land surface and are predicted to expand in the next few centuries at the expense of tropical forests, mainly as a result of deforestation and human fires. Can such a vegetation trend impact, through changes in plant Si cycling, the lithogenic silicon (LSi) release into soils (through chemical weathering) and the net dissolved Si (DSi) outputs from soils to stream water (through chemical denudation)? The first step of an investigation requires quantifying the net Si fluxes involved in the plant/soil system. Here, a schematic steady-state Si cycle, established for a tropical humid savanna (Lamto, Ivory Coast) that developed on a ferruginous soil and is subjected to annual fires, is presented. Erosion was assumed to be insignificant. LSi and biogenic Si (BSi under the form of phytoliths) pools were measured, and Si fluxes were estimated from Si concentrations and mass balance calculation. Identification of plant and soil phytoliths indicated that the soil BSi pool is in equilibrium with the current BSi input by the savanna. In the soil column, mixing between a young rapidly recycled BSi pool and an old stable BSi pool is attested by a mixing line equation. Storage of the old BSi pool is assimilated as a BSi output from the plant/soil system. A BSi output additionally occurs after annual fires, when ashes are exported. Both BSi outputs decrease as much the BSi dissolution. In order to uptake constant DSi flux, the savanna increases by three to eight times the net LSi release, depending upon the post-fire ash exportation scenario. A comparison between savanna and rainforest Si cycles that maximizes the differences in plant/soil systems and minimizes differences in climate is presented. The comparison revealed that BSi storage is higher in the savanna soil than in the rainforest soil, mainly due to BSi production that is twice higher in the savanna (127 vs 67 kg/ha/yr). The resulting LSi release that is enhanced by plant uptake is more than 1.5 higher in the savanna than in the rainforest (from 33 to 85 kg/ha/yr in the savanna vs 21 kg/ha/yr in the rainforest). On the contrary, DSi output from soils to stream water, which is not controlled by plant Si cycling but more likely by the soil hydrological regime (or meteoric weathering), is close to twice as high in the rainforest/ferrallitic soil ecosystem (16 vs 9 kg/ha/yr). This case study suggests that the predicted expansion of savannas at the expense of forests should significantly increase DSi uptake by plants, BSi storage in soils, BSi output with ash exportation, and, hence, LSi release through chemical weathering, without direct impact on DSi outputs from soils to stream water. Tracks for further assessing the role of plant Si cycling on chemical weathering, Si and C cycles were suggested: 1) estimates of BSi fluxes that were wrongly based on the assumption that the amount of DSi leached out from soils is linked to the magnitude of plant Si cycling and/or to BSi concentration in soils should be reappraised and 2) changes in the magnitude of plant Si cycling should be accounted in geochemical carbon cycle models, for one of the plant-induced weathering mechanisms.

Alexandre, Anne; Bouvet, Mickael; Abbadie, Luc

2011-08-01

51

The role of savannas in the terrestrial Si cycle: A case-study from Lamto, Ivory Coast  

NASA Astrophysics Data System (ADS)

Savannas currently occupy a fifth of the earth's land surface and are predicted to expand in the next few centuries at the expense of tropical forests, mainly as a result of deforestation and human fires. Can such a vegetation trend impact, through changes in plant Si cycling, the lithogenic silicon (LSi) release into soils (through chemical weathering) and the net dissolved Si (DSi) outputs from soils to stream water (through chemical denudation)? The first step of an investigation requires quantifying the net Si fluxes involved in the plant/soil system. Here, a schematic steady-state Si cycle, established for a tropical humid savanna (Lamto, Ivory Coast) that developed on a ferruginous soil and is subjected to annual fires, is presented. Erosion was assumed to be insignificant. LSi and biogenic Si (BSi under the form of phytoliths) pools were measured, and Si fluxes were estimated from Si concentrations and mass balance calculation. Identification of plant and soil phytoliths indicated that the soil BSi pool is in equilibrium with the current BSi input by the savanna. In the soil column, mixing between a young rapidly recycled BSi pool and an old stable BSi pool is attested by a mixing line equation. Storage of the old BSi pool is assimilated as a BSi output from the plant/soil system. A BSi output additionally occurs after annual fires, when ashes are exported. Both BSi outputs decrease as much the BSi dissolution. In order to uptake constant DSi flux, the savanna increases by three to eight times the net LSi release, depending upon the post-fire ash exportation scenario. A comparison between savanna and rainforest Si cycles that maximizes the differences in plant/soil systems and minimizes differences in climate is presented. The comparison revealed that BSi storage is higher in the savanna soil than in the rainforest soil, mainly due to BSi production that is twice higher in the savanna (127 vs 67 kg/ha/yr). The resulting LSi release that is enhanced by plant uptake is more than 1.5 higher in the savanna than in the rainforest (from 33 to 85 kg/ha/yr in the savanna vs 21 kg/ha/yr in the rainforest). On the contrary, DSi output from soils to stream water, which is not controlled by plant Si cycling but more likely by the soil hydrological regime (or meteoric weathering), is close to twice as high in the rainforest/ferrallitic soil ecosystem (16 vs 9 kg/ha/yr). This case study suggests that the predicted expansion of savannas at the expense of forests should significantly increase DSi uptake by plants, BSi storage in soils, BSi output with ash exportation, and, hence, LSi release through chemical weathering, without direct impact on DSi outputs from soils to stream water. Tracks for further assessing the role of plant Si cycling on chemical weathering, Si and C cycles were suggested: 1) estimates of BSi fluxes that were wrongly based on the assumption that the amount of DSi leached out from soils is linked to the magnitude of plant Si cycling and/or to BSi concentration in soils should be reappraised and 2) changes in the magnitude of plant Si cycling should be accounted in geochemical carbon cycle models, for one of the plant-induced weathering mechanisms.

Alexandre, A. E.; Abbadie, L.

2011-12-01

52

Layered tektites - A multiple impact origin for the Australasian tektites  

NASA Astrophysics Data System (ADS)

The mechanisms proposed for the origin of tektites from the Australasian field are examined using neutron activation data for twenty layered tektites and six splash tektites of known and widely separated sites of a field greater than 1140 km in length. Evidence is presented indicating that the layered tektites formed as sheets or pools of melt. It is argued that their distribution across a field greater than 1140 km in length is inconsistent with their formation in a single crater, and that many impact craters are required to account for their distribution across such a large field.

Wasson, J. T.

1991-02-01

53

Comparison of the bacterial species diversity of spontaneous cocoa bean fermentations carried out at selected farms in Ivory Coast and Brazil.  

PubMed

To compare the spontaneous cocoa bean fermentation process carried out in different cocoa-producing regions, heap and box (one Ivorian farm) and box (two Brazilian farms) fermentations were carried out. All fermentations were studied through a multiphasic approach. In general, the temperature inside the fermenting mass increased throughout all fermentations and reached end-values of 42-48 °C. The main end-products of pulp carbohydrate catabolism were ethanol, lactic acid, acetic acid, and/or mannitol. In the case of the fermentations on the selected Ivorian farm, the species diversity of lactic acid bacteria (LAB) and acetic acid bacteria (AAB) was restricted. Lactobacillus fermentum and Leuconostoc pseudomesenteroides were the predominant LAB species, due to their ethanol and acid tolerance and citrate consumption. The levels of mannitol, ascribed to growth of L. fermentum, were fermentation-dependent. Also, enterobacterial species, such as Erwinia soli and Pantoea sp., were among the predominating microbiota during the early stages of both heap and box fermentations in Ivory Coast, which could be responsible for gluconic acid production. Consumption of gluconic acid at the initial phases of the Ivorian fermentations could be due to yeast growth. A wider microbial species diversity throughout the fermentation process was seen in the case of the box fermentations on the selected Brazilian farms, which differed, amongst other factors, regarding pod/bean selection on these farms as compared to fermentations on the selected Ivorian farm. This microbiota included Lactobacillus plantarum, Lactobacillus durianis, L. fermentum, Lactobacillus mali, Lactobacillus nagelii, L. pseudomesenteroides, and Pediococcus acidilactici, as well as Bacillus subtilis that was present at late fermentation, when the temperature inside the fermenting mass reached values higher than 50 °C. Moreover, AAB seemed to dominate the Brazilian box fermentations studied, explaining higher acetic acid concentrations in the pulp and the beans. To conclude, it turned out that the species diversity and community dynamics, influenced by local operational practices, in particular pod/bean selection, impact the quality of fermented cocoa beans. PMID:21569940

Papalexandratou, Zoi; Camu, Nicholas; Falony, Gwen; De Vuyst, Luc

2011-02-01

54

Beryllium-10 in Australasian tektites: Constraints on the location of the source crater  

NASA Astrophysics Data System (ADS)

By using accelerator mass spectrometry we have measured the 10Be concentrations of 86 Australasian tektites. Corrected to the time of tektite production ˜0.8 My ago, the 10Be concentrations (10 6 atom/g) range from 59 for a layered tektite from Huai Sai, Thailand, to 280 for an australite from New South Wales, Australia. The average value is 143 ± 50. When tektites are sorted by country, their average measured 10Be concentrations increase slowly with increasing distance from Southeast Asia, the probable location of the tektite producing event, from 59 ± 9 for 6 layered tektites from Laos to 136 ± 20 for 20 splash-form tektites from Australia. The lowest 10Be concentrations for tektites fall on or within a contour centered off the shore of Vietnam, south of the Gulf of Tonkin (107°E; 17°N), but also encompassing two other locations in the area of northeastern Thailand previously proposed for the site of a single tektite-producing impact. The 10Be concentrations of layered tektites show only a weak anticorrelation (R ˜ -0.3) with the numbers of relict crystalline inclusions. Loosely consolidated, fine-grained terrestrial sediments or recently consolidated sedimentary rocks are the most likely precursor materials. Dilution of sediments with other kinds of rock raises problems in mixing and is not supported by petrographic data. Sedimentary columns that have the right range of 10Be concentrations occur off the coasts of places where sedimentation rates are high relative to those in the deep sea. A single impact into such a region, 15 to 300 m thick, could have propelled near-surface, high- 10Be material farthest—to Australia—while keeping the deeper-lying, low- 10Be layers closer to home. We do not rule out, however, other proposed mechanisms for tektite formation.

Ma, P.; Aggrey, K.; Tonzola, C.; Schnabel, C.; de Nicola, P.; Herzog, G. F.; Wasson, J. T.; Glass, B. P.; Brown, L.; Tera, F.; Middleton, R.; Klein, J.

2004-10-01

55

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

56

Tektite glass in apollo 12 sample.  

PubMed

The glassy portion of lunar sample 12013 from Apollo 12 is chemically more like some tektites from Java than like any terrestrial igneous rock. It satisfies all the chemical criteria for a tektite. Tektites are relatively recent and acid rocks, whereas the moon is chiefly ancient and basaltic; hence, tektites are probably ejected volcanically, rather than by impact, from the moon. PMID:17843588

O'keefe, J A

1970-06-01

57

Phantom tektite localities of Borneo  

NASA Astrophysics Data System (ADS)

An attempt to find out more about tektite finds at Riam, Indonesian Borneo (Kalimantan), has uncovered a long-standing and complicated confusion about tektite localities in the southern portion of Borneo. It appears that the only authentic localities in the whole of Indonesian Borneo are at Martapura, Pelaihari, and the Sungei (River) Riam Kanan, all within 40 km of each other in the southeastern corner of the island, and all documented, mainly in Dutch and German works, by the early 20th century. Other localities mentioned and shown on maps in more recent French and English publications are mere phantoms resulting from a succession of misinterpretations of previous literature.

Stauffer, P. H.

1983-03-01

58

Fluorine and chlorine contents of tektites  

Microsoft Academic Search

Fluorine (by combined distillation-spectrophotometry) and chlorine (by X-ray fluorescence spectrometry) contents were determined in normal and Muong Nong-type tektites. Contents of F (78-285 ppm) and Cl (3-44 ppm) in normal tektites are about 4 and 10 times lower, respectively, than in the earth's continental crust, and this is attributed to selective volatilization during impact melting. Muong Nong-type tektites are characterized

J. C. Bailey

1986-01-01

59

The Ivory Crayfish  

Microsoft Academic Search

I THINK it may be interesting to some of the readers of NATURE to know that a specimen of the ``Ivory crayfish,'' or Astacus (Cambarus) pellucidus, mentioned in the very interesting communication of Dr. Packard on the Mammoth Cave of Kentucky in NATURE, April 18, has been living in the aquarium-house in the Regent's Park for a considerable time. The

W. A. Forbes

1872-01-01

60

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

61

Structure of ivory.  

PubMed

Profiles with all orientations have been used to visualize the 3D structure of ivory from tusks of elephant, mammoth, walrus, hippopotamus, pig (bush, boar, and warthog), sperm whale, killer whale, and narwhal. Polished, forming, fractured, aged, and stained surfaces were prepared for microscopy using epi-illumination. Tusks have a minor peripheral component, the cementum, a soft derivative of the enamel layer, and a main core of dentine=ivory. The dentine is composed of a matrix of particles 5-20 microm in diameter in a ground substance containing dentinal tubules about 5 microm in diameter with a center to center spacing of 10-20 microm. Dentinal tubules may be straight (most) or curly (pigs). The main findings relate to the way that dentinal tubules align in sheets to form microlaminae in the length of the tusk. Microlaminae are sheets of laterally aligned dentinal tubules. They are axial but may be radial (most), angled to the forming face (pigs and hippopotamus canines), or radial but helical (narwhals). Within the microlaminae the dentinal tubules may be radial, angled to the axis (whales, walrus, and pigs), or may change their orientation from one microlamina to the next in helicoids (canines of hippopotamuses, incisors of proboscidea). In the nonbanded, featureless ivories from the hippopotamus incisors, the dentinal tubules form radial microlamina from which the arrangements in other ivories can be derived. In the canines of hippopotamuses and incisors of proboscidea, the dentinal tubule orientation changes incrementally from one microlamina to the next in a helicoid, a stack of dentinal tubules that change their orientation by 180 degrees anticlockwise. Dentinal tubules having different orientations are laid down concurrently, not layer by layer as in most examples of helicoidal architecture (e.g., insect cuticle). In proboscidean ivory, the microlaminae are radial, normal to the banding of growth layers marking the plane of deposition. They form radial segments with each 180 degrees turn in the orientation of their constituent dentinal tubules. Below the cementum they are almost complete 180 degrees helicoids, but nearer to the core they become narrower with the loss of radially oriented dentinal tubules. These truncated helicoidal patterns appear in longitudinal profile as VVVV feather patterns rather than intersection intersection intersection intersection, each V or intersection being the side view of a partial or complete helicoid. The Schreger pattern in proboscidean ivory consists of these helicoids divided tangentially into columns in the length of the tusk. Narwhals have the most abundant matrix particles with their radial/helical dentinal tubules having a twist opposite to that in the cementum. PMID:18157860

Locke, Michael

2008-04-01

62

Consequences for tektite composition of an origin by meteoritic splash  

Microsoft Academic Search

Calculations have been made of the contribution to tektite composition from admixture of meteoritic material assuming an origin for tektites as splash from meteoritic impact. This contribution cannot exceed about 0.1 per cent for chondrites or 0.03 per cent for irons for most tektites. For the groups from Central Java, Billiton, Borneo and South Indochina, with larger nickel and chromium

S. R. Taylor

1962-01-01

63

Tektites: A post-Apollo view  

Microsoft Academic Search

Prior to the receipt of the lunar samples, it was the scientific consensus that tektites were melted and splashed material formed during large cometary or meteorite impact events. Whether the impact took place on the Earth or the Moon was the topic of a long-standing scientific debate, which raged with particular intensity during the decade previous to the lunar landings.

Stuart Ross Taylor

1973-01-01

64

Exploration of tektite formation processes through water and metal content measurements  

NASA Astrophysics Data System (ADS)

Impact events are a significant surface-modifying process on solar system objects lacking frequent resurfacing by atmospheric or igneous processes. To better explore the effects of impacts on surface materials, we measured the water and trace element compositions of tektites from Da Lat, Vietnam. Fourier transform infrared spectroscopy was used for water measurements and laser ablation inductively coupled plasma mass spectrometry was used for trace element measurements. Consistent with previous investigations of tektites, we found that the samples are depleted in volatile metals (e.g., Zn, Pb) as well as in water compared with the average continental crust, although water contents are still extremely high for rocks melted at atmospheric pressure. While Zn and Pb concentrations are linearly correlated with each other, there is no correlation between H2O and Zn or Pb contents. Combined with water contents of other tektites in the Australasian strewn field, our results demonstrate that the source impact occurred at a wet site in or off the coast of the Indochina peninsula.

Watt, Nigel; Bouchet, Romain A.; Lee, Cin-Ty A.

2011-07-01

65

Tektites - volcanic ejecta from the moon?  

Microsoft Academic Search

The problem of the origin of the enigmatic tektites is still unsolved. The two leading hypotheses - viz., ejecta from terrestrial\\u000a impacts, and ejecta from lunar volcanoes or lunar impacts, each encounters serious difficulties. The former has ballistic\\u000a and water content difficulties, while the latter has some compositional difficulties, especially in the trace elements, as\\u000a determined from the returned samples.

Winifred S. Cameron; Barbara E. Lowrey

1975-01-01

66

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

67

Oxygen Isotope Constraints on the Origin of Georgia Tektites  

NASA Astrophysics Data System (ADS)

Georgia tektites ("georgiaites") are North American tektites that occur in east-central Georgia. In this investigation small chips of tektite material was separated from 24 individual specimens for oxygen isotope analysis. Results have an analytical precision of 0.2% based on duplicate analysis of a NIST silicate standard (NBS-28) and tektites. Oxygen isotope ratios (i.e., delta (18) O - SMOW) range from + 6.9 to + 10.7 parts per mil. The mean delta (18) O for Georgia tektites is + 9.1 parts per mil. These results are consistent with a delta (18) O value reported previously on a single georgiaite [1]. It appears that the tektites have oxygen isotope ratios similar to igneous and/or metamorphic rocks. Blum and Chamberlain [2] argue that since sea water has a relatively low delta (18) O value, its addition to isotopically heavier sedimentary rocks could account for the relatively low oxygen isotope ratios determined for the tektites. Such a model would require vaporization of the target material in order to exchange oxygen between the water and silicates. However, vaporization is not a popular theory of tektite petrogenesis, and since tektites contain very little water, it is difficult to reconcile the low delta (18) O values due to mixing with sea water. An alternative explanation may be that the low delta (18) O values are derived from a crystalline basement or it may be that the sedimentary target rocks at the proposed source crater (i.e., Chesapeake Bay crater) have delta (18) O values similar to that of the tektites. To resolve the issue, it will be necessary to melt samples of the proposed target material and make delta (18) O measurements on the resulting glass and then compare the results to the tektites. References: [1] Taylor, H.P. and Epstein, S. (1969) J. Geophys. Res., 74, 6834-6844. [2] Blum J.D. and Chamberlain C.D. (1992) Science, 257, 1104-1107.

Albin, E. F.

1997-07-01

68

A 10.8-kg layered (Muong-Nong-type) tektite from Wenchang, Hainan, China  

NASA Astrophysics Data System (ADS)

A 10.79-kg layered tektite from Hainan is the largest tektite from China, and the fifth largest reported to date. It, together with a 1.9-kg Hainan tektite described by Yuan (1981), greatly extends the area of the Australasian field within which layered tektites having masses greater than 1 kg have been found.

Futrell, D. S.; Wasson, J. T.

1993-03-01

69

Flow Instabilities Relating to the Surface Markings of Tektites  

Microsoft Academic Search

Experimental study has shown that the instability of the hypersonic shock layer flow over blunt bodies with surface cavities is coupled to the dynamic stability of the body. The ablative action in the cavities and the body motion induced by the cavity flow may possibly provide evidence of aerodynamic origin of surface markings on some tektites. Introduction. Tektites have fascinated

ROBERT H. JOHNSON

1966-01-01

70

Magnetic measurements of glass from Tikal, Guatemala: Possible tektites  

Microsoft Academic Search

Certain glass nodules found at the archeological site at Tikal, Guatemala, have been considered as possible tektites. To test this possibility, magnetic studies have been made on three of the glass specimens. These specimens are similar to tektites, both visually and also because they contain very little Fe3+ as detected by Mössbauer spectroscopy. The magnetic Curie constants are similar in

F. E. Senftle; A. N. Thorpe; J. R. Grant; A. Hildebrand; H. Moholy-Nagy; B. J. Evans; L. May

2000-01-01

71

The problem of the origin of tektites from Zhamanshin astrobleme  

NASA Astrophysics Data System (ADS)

Tektites (from Greek. Tektós - molten, melted) - are natural glassy formations of yellow, green, but mostly black color, completely fused, that may have different shape and size. According to their composition tektites are high-silicon (acidic) glasses. The content of SiO may reach 88,5%, AlO - 20,5%, FeO - 11,5%, and CaO - 8,5%. The presence of Ni and relatively low content of water in comparison with other glasses (only 0.02%, which is 10 times less than in the volcanic glass) is of particular importance. The name to tektites was given by Austrian geologist E. Suess (1900). Tektites are often denominated according to their location: irgizites and zhamanshinites (river Irgiz and Zhamanshin hole in Kazakhstan), moldavites [river Moldava (modern Vltava, Czech Republic)] filippinites (Philippines), idoshinites (Indo-china), avstralites (Australia), etc. There is still no generally accepted hypothesis about the origin of tektites: some consider them to be a part of meteorites, others suggest that tektites are the result of the explosion and melting of terrestrial matter that happens when meteorites, asteroids or comets fall down on Earth. The aim of the present work is to conduct analytic studies of tektites from Zhamanshin crater. We examined 50 samples that are part of the collection from the Zhamanshin crater gathered in 1979 by I.N. Plotnikova during her student field expedition led by P.V. Florenskiy. For the convenience of the research of tektites during its early stages the authors compiled a morphological classification of the given samples. On the basis of the visual inspection by the help of a magnifying glass we distinguished the following groups of tektites, which are characterized by certain morphological features: 1. Porous (cavernous), black, isometric shape 2. Porous (cavernous), yellowish-brown, isometric shape 3. Elongated, torose 4. Elongated, with glassy luster 5. Elongated, twisted 6. worm-shaped 7. Vitreous, glassy 8. Deformated The vast majority of researchers believe that the surface of tektites reflects the dynamic resistance of the medium (air) that they were experiencing in their movement. Visual examination of the samples confirms that, and looking at the most tektites, it is difficult not to agree with this idea. Consequently, we can make an assumption that the morphology of tektites depends on the conditions of the genesis (in particular, on the distance and the expansion velocity of tektites). Aubrey Whymark, a famous contemporary specialist in tektites, also believes that the morphology is associated with the range of expansion of tektites from an impact crater, which, according to his theory, are formed as a result of impact metamorphism. This opinion is shared by many scientists involved in the research of tektites. In the next phase of the research the samples of all the morphological groups were examined using electron microscopy. During this analysis, we have found non-melted areas of the rock in 3 out of 50 samples (these were the rocks of the 2nd and the 7th groups from our classification). We also detected the features of the surface patterns that testify the impact formation of tektites.

Takhauov, Artur; Anoshin, Dmitriy; Plotnikova, Irina

2013-04-01

72

Africa and the Renaissance: Art in Ivory  

Microsoft Academic Search

Africa and the Renaissance: Art in Ivory is the eighth exhibition organized by the Center for African Art, New York, now in its fourth year. It explores the artistic and historical relationship between Africa and Renaissance Europe, as revealed by ivory objects sculpted by Africans for Europeans in the fifteenth and sixteenth centuries. The exhibition focuses on 105 carvings, drawn

Susan Vogel

1989-01-01

73

A Possible Tektite Strewn Field in the Argentinian Pampa  

NASA Astrophysics Data System (ADS)

Impact glass associated with 11 elongate depressions in the Pampean Plain of Argentina, north of the city of Río Cuarto, was suggested to be proximal ejecta related to a highly oblique impact event. We have identified about 400 additional elongate features in the area that indicate an aeolian, rather than an impact, origin. We have also dated fragments of glass found at the Río Cuarto depressions; the age is similar to that of glass recovered 800 kilometers to the southeast. This material may be tektite glass from an impact event around 0.48 million years ago, representing a new tektite strewn field.

Bland, P. A.; de Souza Filho, C. R.; Jull, A. J. T.; Kelley, S. P.; Hough, R. M.; Artemieva, N. A.; Pierazzo, E.; Coniglio, J.; Pinotti, L.; Evers, V.; Kearsley, A. T.

2002-05-01

74

A possible tektite strewn field in the Argentinian Pampa.  

PubMed

Impact glass associated with 11 elongate depressions in the Pampean Plain of Argentina, north of the city of Rio Cuarto, was suggested to be proximal ejecta related to a highly oblique impact event. We have identified about 400 additional elongate features in the area that indicate an aeolian, rather than an impact, origin. We have also dated fragments of glass found at the Rio Cuarto depressions; the age is similar to that of glass recovered 800 kilometers to the southeast. This material may be tektite glass from an impact event around 0.48 million years ago, representing a new tektite strewn field. PMID:12004127

Bland, P A; de Souza Filho, C R; Jull, A J T; Kelley, S P; Hough, R M; Artemieva, N A; Pierazzo, E; Coniglio, J; Pinotti, L; Evers, V; Kearsley, A T

2002-05-10

75

Variation of chemical composition in Australasian tektites from different localities in Vietnam  

NASA Astrophysics Data System (ADS)

One hundred and thirteen Australasian tektites from Vietnam (Hanoi, Vinh, Dalat, and Saigon areas) were analyzed for their major and trace element contents. The tektites are either of splash form or Muong Nong-type. The splash-form tektites have SiO2 contents ranging from 69.7 to 76.8 wt%, whereas Muong Nong-type tektites, which are considerably larger than splash-form tektites and have a blocky and chunky appearance, have slightly higher silica contents in the range of 74-81 wt%. Major-element relationships, such as FeO versus major oxides, Na2O versus K2O, and oxide ratio plots, were used to distinguish the different groups of the tektites. In addition, correlation coefficients have been calculated for each tektite group of this study. Many chemical similarities are noted between Hanoi and Vinh tektites from the north of Vietnam, except that the Hanoi tektites contain higher contents of CaO than Vinh; the higher content of CaO might be due to some carbonate parent material. Both Dalat and Saigon tektites have nearly similar composition, whereas the bulk chemistries of the tektites from Hanoi and Vinh appear different from those of Saigon and Dalat. There are differences, especially in the lower CaO and Na2O and higher MgO, FeO, for the tektites of Dalat and Saigon in comparison to that of Hanoi tektites. Furthermore, the Dalat and Saigon tektites show enrichments by factors of 3 and 2 for the Ni and Cr contents, respectively, compared to those of Hanoi and Vinh. The difference in chemistry between the North Vietnam tektites (Hanoi, Vinh) to that of South Vietnam tektites (Saigon, Dalat) of this study indicate that the parent material was heterogeneous and possibly mixing between different source rocks took place. Muong Nong-type tektites are enriched in the volatile elements such as Br, Zn, As, and Sb compared to the average splash-form tektites of this study. The chemical compositions of the average splash-form and Muong Nong-type tektites of this study closely resemble published data for average splash-form and Muong Nong-type indochinites, indicating that they have the same source. The trace element ratios Ba/Rb (2.7), Th/U (5.2), Th/Sc (1.3), Th/Sm (2.2), and the rare earth element (REE) abundances of this study show close similarities to those of average upper continental crust.

Amare, Kassa; Koeberl, Christian

2006-01-01

76

Metallic spherules in tektites from Isabela, Philippine Islands  

USGS Publications Warehouse

Iron-nickel spherules, as much as 0.5 mm in diameter, have been found completely embedded in some philippinites. The spherules consist mainly of kamacite with unidentified pink inclusions. The meteoritic origin of these spherules seems reasonable, suggesting that the tektites containing them were formed by asteroidal or meteoritic impact.

Chao, E. C. T.; Adler, I.; Dwornik, E. J.; Littler, J.

1962-01-01

77

Ages of Darwin Glass, Macedon Glass, and Far Eastern tektites  

Microsoft Academic Search

A group of possibly related glasses from the Far East, including seven samples of Darwin Glass and the two known samples of Macedon Glass, have been dated by the fission track technique. With the exception of a lower age for one Darwin Glass sample and one Muong Nong tektite all ages are indistinguishable, suggesting that the Darwin and Macedon impact

R. L. Fleischer; P. B. Price; J. R. M. Viertl; R. T. Woods

1969-01-01

78

New fission track ages of tektites and related glasses  

Microsoft Academic Search

Fission track dating is applied to a large number of australites, Muong Nong type tektites, Darwin glasses and Libyan Desert glasses. It is found that these glasses often have lowered fission track ages due to annealing effects. The same specimens have also smaller fission track etch pits. According to the diminishing percentage of etched fossil fission track diameters, lowered fission

W. Gentner; D. Storzer; G. A. Wagner

1969-01-01

79

Potassium isotope abundances in Australasian tektites and microtektites.  

NASA Astrophysics Data System (ADS)

We report electron microprobe determinations of the elemental compositions of 11 Australasian layered tektites and 28 Australasian microtektites; and ion microprobe determinations of the 41K/39K ratios of all 11 tektites and 13 of the microtektites. The elemental compositions agree well with literature values, although the average potassium concentrations measured here for microtektites, 1.1 1.6 wt%, are lower than published average values, 1.9 2.9 wt%. The potassium isotope abundances of the Australasian layered tektites vary little. The average value of ?41K, 0.02 ± 0.12‰ (1? mean), is indistinguishable from the terrestrial value (= 0 by definition) as represented by our standard, thereby confirming four earlier tektite analyses of Humayun and Koeberl (2004). In agreement with those authors, we conclude that evaporation has significantly altered neither the isotopic nor the elemental composition of Australasian layered tektites for elements less volatile than potassium. Although the average 41K/39K ratio of the microtektites, 1.1 ± 1.7‰ (1? mean), is also statistically indistinguishable from the value for the standard, the individual ratios vary over a very large range, from -10.6 ± 1.4‰ to +13.8 ± 1.5‰ and at least three of them are significantly different from zero. We interpret these larger variations in terms of the evaporation of isotopically light potassium; condensation of potassium in the vapor plume; partial or complete stirring and quenching of the melts; and the possible uptake of potassium from seawater. That the average 41K/39K ratio of the microtektites equals the terrestrial value suggests that the microtektite-forming system was compositionally closed with respect to potassium and less volatile elements. The possibility remains open that 41K/39K ratios of microtektites vary systematically with location in the strewn field.

Herzog, G. F.; O'D. Alexander, C. M.; Berger, E. L.; Delaney, J. S.; Glass, B. P.

2008-10-01

80

Interdependence in Planning. Multilevel Programming Studies of the Ivory Coast.  

National Technical Information Service (NTIS)

Government officials are obliged to make decisions concerning economywide issues, dealing, for example, with the size of the public budget or the level of the foreign debt. They must also make decisions which affect a particular sector of the economy, suc...

L. M. Goreux P. Davis R. Vaurs

1977-01-01

81

Using morphometric and analytical techniques to characterize elephant ivory  

Microsoft Academic Search

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

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

2006-01-01

82

GAMMA-SPECTROMETRIC DETERMINATIONS OF THORIUM, URANIUM AND POTASSIUM IN TEKTITES  

Microsoft Academic Search

Thorium, uranium, and potassium were determined in nine tektites and two ; Peruvian glasses by a non-destructive gamma-spectrometric technique. The nine ; tektites include three indochinites from Thailand, one indochinite from China, ; two bediasites, one philippinite, one moldavite, and one australite. The average ; thorium, uranium, and potassium contents of these samples are 11.9 ppm, 2.0 ppm, ; and

R. D. Cherry; J. A. S. Adams

1963-01-01

83

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

NASA Astrophysics Data System (ADS)

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 56 from Site 903C (~ 8 km north-northwest of Site 904) contains a 2-cm-thick layer of impact ejecta without any tektite or impact glass. Shocked quartz and feldspar grains, with multiple sets of planar deformation features, and abundant coesite-bearing grains are present at both sites. The major oxide contents, trace element compositions, and rare earth element patterns of the Site 904 tektites are similar to those of the Site 612 tektites and to North American tektites (especially bediasites). The Sr and Nd values for one composite tektite sample from Site 904 fall within the range previously obtained for the Site 612 tektites, which defines a linear trend that, if extrapolated, would intersect the values obtained for North American tektites. The water contents of eight tektite fragments from Site 904 range from 0.017 to 0.098 wt. %, and, thus, are somewhat higher than is typical for tektites. The heavy mineral assemblages of the 63 - 125 m size fractions from the ejecta layers at Sites 612, 903, and 904 are all similar. Therefore, we conclude that the ejecta layer at all three sites are from the same impact event and that the tektites at Sites 904 and 612 belong to the North American tektite strewn field. Clinopyroxene-bearing (cpx) spherules occur below, or in the lower part of, the main ejecta layer at all three sites. At all three sites the cpx spherules have been partly or completely replaced with pyrite which preserved the original crystalline textures. Site 612, 903, and 904 cpx spherules are similar to those found in the Caribbean Sea, Gulf of Mexico, central equatorial Pacific, western equatorial Pacific, and eastern Indian Ocean. The cpx event appears to have preceded the North American tektite event by 10 - 15 ka or less. The fining-upward sequence at all three sites and concentration of the denser, unmelted impact ejecta at the top of the tektite layer at Sites 612 and 904, suggest that the tektite-bearing ejecta layers are not the result of downslope redeposition and that the unmelted ejecta landed after the glass. Geographic variations in thickness of the tektite-bearing ejecta layer, the lack of carbonate clasts in the ejecta layer, and the low CaO content of the tektite glass, suggest that the ejecta (including the tektite glass) were derived from the Chesapeake Bay structure rather than from the Toms Canyon structure. A sharp decline in microfossil abundances suggests that local environmental changes caused by the impact may have had adverse effects on benthic foraminifera, radiolaria, sponges, and fish as well as the planktic foraminifera.

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

1998-03-01

84

The Shapes of Splash-Form Tektites: Their Geometrical Analysis, Classification and Mechanics of Formation  

NASA Astrophysics Data System (ADS)

Splash-form tektites are found with a wide range of sizes and in an intriguing array of shapes ranging from spheres to flat discs to dumbbells. Despite the considerable interest that exists in tektites, there has been relatively little effort to develop rational shape descriptors and to understand the origin of their shapes based on basic physics. Tektites represent a natural laboratory experiment that can be analyzed to better understand the physics of rotating fluid drops. In this paper, we propose a classification scheme based on the axial ratios of ellipsoids, and we analyze the frequency of tektite shapes using a database of over 1,000 measured tektites. We show that the shape distribution for tektites from Thailand and Vietnam are very similar and that the most common tektites are moderately deformed discs but there exist also a significant number of moderately deformed dumbbells, and we argue that this distribution comes about because fluid drops first deform as oblate forms and then undergo a non-axisymmetric instability to become prolate. We also find that the largest tektites are most likely to be weakly deformed oblate objects while the most strongly deformed and most highly prolate forms are considerably smaller. A numerical model for the evolution of an axisymmetric fluid drop, such as a tektite in its molten early stage, is presented which demonstrates that drops that deform relatively slowly over a longer period of time are likely to develop central thinning while those that deform more rapidly are more likely to retain the shape of an ellipsoid. For the numerical parameters used the characteristic time scale for deformation was less than 1 s.

Stauffer, Mel R.; Butler, Samuel L.

2010-12-01

85

Geographic variation of stable isotopes in African elephant ivory  

NASA Astrophysics Data System (ADS)

In 1989, the international community listed the African elephant in Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) thus prohibiting commercial ivory trade. Recent surveillance data show that the illegal trade in ivory has been growing worldwide. Long-term preservation of many of the African elephant populations can be supported with a control mechanism that helps with the implementation of remedial conservation action. Therefore, setting up a reference database that predicts the origin of ivory specimens can assist in determining smuggling routes and the provenance of illegal ivory. Our research builds on earlier work to seek an appropriate method for determining the area of origin for individual tusks. Several researchers have shown that the provenance of elephant ivory can be traced by its isotopic composition, but this is the first attempt to produce an integrated isotopic reference database of elephant ivory provenance. We applied a combination of various routine geochemical analyses to measure the stable isotope ratios of hydrogen, carbon, nitrogen, oxygen, and sulphur. Up to now, we analysed 606 ivory samples of known geographical origin from African range states, museums and private collections, comprising 22 African elephant range states. The isotopic measurements were superimposed with data layers from vegetation, geology and climate. A regression function for the isotope composition of the water isotopes in precipitation and collagen in ivory was developed to overcome the problem of imprecise origin of some of the sampled material. Multivariate statistics, such as nearest neighborhood and discriminate analysis were applied to eventually allow a statistical determination of the provenance for ivory of unknown origin. Our results suggest that the combination of isotopic parameters have the potential to provide predictable and complementary markers for estimating the origin of seized elephant ivory.

Ziegler, S.; Merker, S.; Jacob, D.

2012-04-01

86

New approach to the origin of the tektite in China  

NASA Astrophysics Data System (ADS)

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.

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

87

Preliminary Discussion on the Origin of Lei-Gong-Mo (Tektites).  

National Technical Information Service (NTIS)

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-...

Y. Baoyin

1983-01-01

88

Gamma-spectrometric determinations of thorium, uranium and potassium in tektites  

Microsoft Academic Search

Thorium, uranium and potassium have been determined in nine tektites and two Peruvian glasses by a non-destructive gamma-spectrometric technique. The nine tektites include three indochinites from Thailand, one indochinite from China, two bediasites, one philippinite, one moldavite and one australite, and the average thorium, uranium and potassium contents of these samples are 11.9 ppm, 2.0 ppm and 1.9 per cent

R. D. Cherry; John A. S. Adams

1963-01-01

89

Ornithologists continue quest to locate the ivory-billed woodpecker  

NSDL National Science Digital Library

Ivory-billed Woodpecker Chat [Real Player]http://www.nature.org/chat/lordgodbird/index.html?src=searchThe Search for the Ivory-Billed Woodpeckerhttp://www.birds.cornell.edu/ivory/Audubon: Ivory-billed woodpeckerhttp://www.mass.gov/lib/collections/dc/Audubon/Ivory_Billed_Woodpecker.htmIvory-billed woodpecker [pdf]http://www.fws.gov/ivorybill/Big Woods Conservation Partnershiphttp://www.ivorybill.org/Three years ago, a bird scientist claimed to have seen an ivory-billed woodpecker in Arkansas. It was an unusual sighting, mostly because the bird was supposedly extinct, and had been so since the 1940s. The alleged sighting set off a flurry of activity among ornithologists, and even those with little interest in bird watching became interested. The quest for this rare bird continues, as a team of researchers from Cornell University was recently dispatched to the White River National Wildlife Refuge in Arkansas to continue the search. To look for the bird, they have brought along tools like GPS coordinate monitors, automatic cameras, infrared flash strobes, and sensitive audio recorders. Of course, there are some in the birding community who remain convinced that there are no ivory-billed woodpeckers left at all. There are a number of believers however, and groups like the Nature Conservancy, the Audubon Society, and even NASA have provided support and technical assistance. Even noted biologist E. O. Wilson has chimed in on the subject, noting that while the bird may be gone forever, "Great science discoveries have come from longer odds." The first link leads to a fine piece from this Sunday's Boston Globe which reports on the quest to locate the ivory-billed woodpecker. The second link leads to a chat with author Phillip Hoose, who wrote a book about the ivory-billed woodpecker. Moving on, the third link leads to the homepage for the research expedition sponsored by the Cornell Lab of Ornithology. Here, visitors can learn more about the expedition and read dispatches from the field. The fourth link will take visitors to a drawing of the ivory-billed woodpecker by noted naturalist John James Audubon. The fifth link will lead visitors to the U.S. Fish & Wildlife Service's site dedicated to the ivory-billed woodpecker. Here visitors can read a draft recovery plan and also learn more about the bird. The last link will take visitors to the homepage of the Big Woods Conservation Partnership.

2008-01-01

90

Lake Toba, Sumatra, and the Origin of Tektites  

NASA Astrophysics Data System (ADS)

KAYSING suggested recently1 that Lake Toba, Sumatra, Indonesia, was a possible source area for the Australian group of tektites. This suggestion was based on extrapolation from the observation of McColl and Williams2 that the ``majority of australite localities in south central Australia are concentrated along a line extending northwestwards .... A second subparallel line may exist in the west of South Australia, separated from the main line by an extensive tract of australite-deficient country''. They consider that these lines represent primary distribution patterns, and Kaysing1 suggests that suitable assumptions about ejection angles and allowance for the Earth's rotation ``brings the intersection of the infall lines to Lake Toba''.

Taylor, S. R.

1970-09-01

91

Large Compositional Variations in Layered Tektites of NE Thailand: Implications for the Dynamics of Large Impact-Induced Explosions on Earth  

Microsoft Academic Search

The Australasian strewn field is the youngest and best preserved deposit of tektites and thus holds important information about the physics of large impact-induced explosions on Earth. In particular, the scale of compositional variation in and among tektites yields information about the scale of mixing during impact and ejection and thus the energy of the process. Splash-form tektites are widely

P. S. Fiske; T. K. Lowe

1995-01-01

92

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

Federal Register 2010, 2011, 2012, 2013

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

2010-08-30

93

Exploration of Tektite Formation Processes through Water and Metal Content Measurements  

NASA Astrophysics Data System (ADS)

Impact events are a significant surface-modifying process on bodies lacking frequent resurfacing by atmospheric or igneous processes. To explore the effects of impacts on surface materials, we measured water and trace element compositions of tektites from Vietnam. Fourier transform infrared spectroscopy was used for water measurements and laser ablation inductively coupled plasma mass spectrometry was used for trace element measurements. Consistent with previous investigations of tektites, we found that the samples are depleted in volatile metals (e.g., Zn, Pb) as well as in water compared to the average continental crust, though water contents are high for rocks melted at atmospheric pressure. While Zn and Pb concentrations are linearly correlated with each other, there is no correlation between H2O and Zn or Pb contents. Combined with water contents of other tektites in the Australasian strewnfield, our results demonstrate that the source impact occurred at a wet site near the Indochina peninsula.

Watt, Nigel John DeWolfe McKinley, II

94

Aquanaut Sleep Patterns During Tektite I - a 60 Day Habitation under Hyperbaric Nitrogen Saturation.  

National Technical Information Service (NTIS)

Four aquanauts lived in the TEKTITE I habitat at a 43-foot depth of sea water for 60 days under nitrogen saturation. The effects of this underwater habitation on quality and quantity of sleep were studied by sleep logs for all four aquanauts; and by elect...

P. Naitoh L. C. Johnson M. Austin

1970-01-01

95

Variations in Fe Oxidation State Between Dark and Light Layers of Muong Nong-type Tektites  

NASA Astrophysics Data System (ADS)

The Fe oxidation state along a profile across dark and light layers of a Australasian Muong Nong tektite sample has been studied by Fe K-edge XANES. The dark layer results to be slightly but reproducibly more oxidized respect to the light layers.

Giuli, G.; Eeckhout, S. G.; Pratesi, G.; Koeberl, C.; Cicconi, M. R.; Paris, E.

96

Optimal dietary protein requirement for juvenile ivory shell, Babylonia areolate  

Microsoft Academic Search

A growth experiment was conducted to determine the optimal dietary protein requirement for juvenile ivory shell reared in indoor aerated aquaria. Six isoenergetic experimental diets using fish meal, casein and gelatin as protein sources were formulated to contain graded levels of protein (27, 33, 38, 43, 49 and 54% of dry diet, respectively). Triplicate groups of 40 shells (average weight

Jian-Bin Zhou; Qi-Cun Zhou; Shu-Yan Chi; Qi-Hui Yang; Chu-Wu Liu

2007-01-01

97

Fourier-transform Raman spectra of ivory III: identification of mammalian specimens  

NASA Astrophysics Data System (ADS)

The FT-Raman spectra of six mammalian ivories, other than elephant and mammoth, are presented and spectral differences formulated into a protocol for the identification of animal species from the ivory samples. In this study, sperm whale, walrus, wart hog, narwhal, hippopotamus and domestic pig are considered. The results, which are obtained non-destructively from a variety of specimens, suggest that FT-Raman spectroscopy provides a potentially useful method for the identification of mammalian ivory.

Edwards, H. G. M.; Farwell, D. W.; Holder, J. M.; Lawson, E. E.

1997-11-01

98

Fourier-transform Raman spectra of ivory. III: Identification of mammalian specimens.  

PubMed

The FT-Raman spectra of six mammalian ivories, other than elephant and mammoth, are presented and spectral differences formulated into a protocol for the identification of animal species from the ivory samples. In this study, sperm whale, walrus, wart hog, narwhal, hippopotamus and domestic pig are considered. The results, which are obtained non-destructively from a variety of specimens, suggest that FT-Raman spectroscopy provides a potentially useful method for the identification of mammalian ivory. PMID:9477579

Edwards, H G; Farwell, D W; Holder, J M; Lawson, E E

1997-11-01

99

Identification of the source of ivory idol by DNA analysis.  

PubMed

In this study, we describe a forensic case dealing with the identification of the source of the processed ivory object by DNA analysis. Two pieces of Lord Krishna's idols from a shop were confiscated by an investigating agency of the Indian government and forwarded to us to identify the source of its origin. We succeeded in isolating DNA from both processed ivory idols by using the phenol/chloroform DNA extraction method. The extracted DNA was subjected to PCR amplification using an elephant-specific mitochondrial DNA (mtDNA) D-loop marker. DNA sequence analysis of the amplified fragment of mtDNA D-loop region confirmed that the idols were consistent with Asian elephant with 99% similarity. PMID:21392005

Gupta, Sandeep Kumar; Thangaraj, Kumarasamy; Singh, Lalji

2011-03-10

100

Ti K-edge EXAFS and XANES study on tektites from different strewnfields  

NASA Astrophysics Data System (ADS)

The concentration and local structure of each element may have various kinds of information about the asteroid impact and mass extinction. Farges and Brown have discussed about the Ti local structure by XANES, and concluded that Ti in tektite occupies 4-coordinated site. EXAFS can be analyzed to give precise information about the distance from Ti to near neighbors. The XAFS measurement of Ti local structure was preformed at the beamline 9C of the Photon Factory in KEK, Tsukuba, Japan. The specimens of tektites are from different strewnfields, they are: indochinite, bediasite, hainanite, philippinite, australite and moldavite. Sample for comparison are Libya desert glass and suevite. The k3?(k) function was transformed into the radial structure function (RSF) for Ti K-edge of six tektites. The RSF for the Ti atom in indochinite and bediasite are similar; hainanite, australite and philippinite are similar; and moldavite is discriminated from others. It indicates that they have the same local atomic environmental around the Ti atoms and extended structure respectively. Coordination numbers and radial structure function are determined by EXAFS analyses (Table 1). We classified the tektites in three types: in indochinite and bediasite, Ti occupies 4-coordinated tetrahedral site and Ti-O distances are 1.84-1.81 Å; in hainanite, australite and philippinite, Ti occupies 5-coordinated trigonal bi-pyramidal or tetragonal pyramidal site and Ti-O distances are 1.92-1.87 Å; in moldavite, Ti occupies the 6-coordinated octahedral site and Ti-O distance is 2.00-1.96 Å. Formation of tektites is related to the impact process. It is generally recognized that tektites were formed under higher temperature and high pressure. But through this study, local structures of Ti are differing in three strewnfields and even different locations of the same strewnfield. What caused the various local structures will be another topic of tektite studies. Local structure of Ti may be changed in the impact event and the following stage. Tektites splashed to the space and travel in several kinds of processes and routes, which lead to different temperature and pressure history. Local structure of Ti should be related with the temperature, pressure, quenching rate, sizes of impact meteorite and size of falling melts. [1] Koeberl. Ann.Rev.Earth Planet.Sci. 14, 323-350 (1986) [2] François Farges & Gordon E. Brown Jr Geochim. Cosmo. Acta.61, 1863-1870 (1997). [3]Paris, E., Dingwell, D., Seifert, F., Mottana, A. & Romano, C. (1994). Phys. Chem. Miner. 21, 520-525.
Table 1 Structure parameters determined by EXAFS

Wang, L.; Furuta, T.; Okube, M.; Yoshiasa, A.

2011-12-01

101

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

102

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

NASA Astrophysics Data System (ADS)

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.; O'Keefe, J. A.

1984-02-01

103

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

104

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

NASA Astrophysics Data System (ADS)

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.

1983-04-01

105

EVALUATION OF RAMAN SPECTROSCOPY FOR THE NON DESTRUCTIVE DIFFERENTIATION BETWEEN CONTRABAND IVORIES  

Microsoft Academic Search

It is the purpose of this study to evaluate several wavelengths of excitation for Raman instrumentation and where possible to acquire data using remote fibre optic probes to examine the feasibility of accessing Raman data for selected contraband ivories The high demand for ivory trade resulted in a significant declining population in elephant herds some two decades ago (1). This

N. F. Nik Hassan; H. G. M. Edwards; N. Arya

106

Protecting the African Elephant: A Dynamic Bioeconomic Model of Ivory Trade  

Microsoft Academic Search

International trade in ivory is banned in order to protect the African elephant. The trade ban is supported by some range states, because it is seen as an effective means for protecting a 'flagship' species, but is opposed by states, mainly in southern Africa, because populations exceed the carrying capacity of local ecosystems. Issues concerning the ivory trade ban are

G. Cornelis van Kooten

2006-01-01

107

Histogenesis of the unique morphology of proboscidean ivory.  

PubMed

The chequered pattern (often called Schreger pattern), which can be seen by unaided eye on transverse profiles of several proboscidean tusks and which can be emphasized by the spreading pattern of the cracks or by mineral discoloration, is an autapomorph feature of the clade Elephantoidea. The pattern differs among proboscidean taxa; therefore, it allows the coarse differentiation of elephants, mammoths, and some other basal groups. Such identification methods could facilitate efforts concerned with protection of the remaining elephant populations through ivory trade restrictions, since the tooth dentine from extinct Mammuthusprimigenius and from extant Loxodontaafricana and Elephasmaximus are the most common raw materials of the ivory carvings. The aim of this study was to show the internal structure of proboscidean ivory and to revise the existing theories on the aforementioned pattern of the elephantoids with reflections on the events which lead to the development of this microstructure. Thin sections and natural crack surfaces with various orientations of M.primigenius, Elephasantiquus, Prodeinotherium, and Deinotherium tusk fragments were used to produce a three-dimensional model which explains the features on all profiles. The "phase shift" model is introduced, which assumes a sinusoid undulation of the dentinal tubules in radial profiles in the case of elephantoids. The model was confirmed by photomicrographs, scanning electron microscopic images, interpretation of natural crack surfaces, and radial displacement analysis of the dentinal tubules. The latter proved that the adjacent waves are not in the same phase. Several new nondestructive distinguishing methods are described here on the basis of the correlation between some microscopic and macroscopic features related to the Schreger pattern. PMID:22949298

Virág, Attila

2012-09-04

108

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

2012-11-15

109

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

2007-02-26

110

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

PubMed Central

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.

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

2007-01-01

111

Masses of the Impactor, the Australasian Tektites, and Size Estimates of the Main Source Crater  

NASA Astrophysics Data System (ADS)

New estimates of the total masses of tektites and Ir fallout in the Australasian strewnfield offer information about the crater diameter of the large source crater or craters that launched Australasian tektites and Australasian microtektites into extra-atmospheric trajectories 0.77 Ma ago. Australasian microtektites (<1 mm diameter) have been found in many deep-sea sediments, though generally at moderate fluences (only one value >200 cm^-2) [1]. Recently, cores having exceptionally high microtektite fluences (>1000 cm^-2) have been discovered: ODP hole 758B [2] and ODP holes 767B and 769A [3]. Analyses of sediments from ODP 758B (Eastern Indian Ocean) and from ODP 769A (Sulu Sea) near SE Asia show small Ir enhancements associated with the microtektites. We determined a net Ir fluence of 2.0 +- 0.5 ng cm^-2 in 758B and a less well-defined value of 1.3 +- 0.6 ng cm^-2 in 769A [4]. Addition of the new cores to the set studied by Burns [4] yields a microtektite distribution that exponentially decreases outward from southeast Asia, the fluence dropping a factor of 2 in ~400 km. In southeast Asia the trend merges with a roughly estimated mass fluence of ~0.9 g cm^-2 inferred from evidence of a melt sheet in NE Thailand. Integration of the inferred distribution yields a total mass of Australasian tektites of 2.7 x 10^16 g, 270X greater than the Glass et al. value of 10^14 g commonly cited in the literature. We can use the Ir fluence of 2.0 ng cm^2 in the main peak of core 758B and the assumption that the fallout pattern was the same as that of the tektites to estimate the mass of the impacting body. The microtektite fluence in the main peak in 758B is 3970 cm^2 corresponding to a mass fluence of 7.94 x 10^-2 g cm^2. Multiplying the Ir/microtektite mass ratio times the integrated tektite mass of 2.7 x 10^16 g yields an Ir mass of 6.8 x 10^17 ng. Assuming that the non-icy part of the projectile consisted of chondritic matter having an Ir concentration of 600 ng/g, we calculate the mass of the impacting body to be 1.1 x 10^15 g. A typical density of 3.6 g cm^-3 yields a volume of 3.1 x 10^14 cm^3 and thus a sphere with a radius of 420 m. A mean Ir content of KT boundary sediments of 80 ng cm^2 corresponds to a mass of the KT impactor of 6.8 x 10^17 g of CM-chondrite-like material, 620X greater than our inferred mass of the Australasian impactor. The inferred mass of the body responsible for the Eltanin impact is 2.5 x 10^14 g, 4X smaller than that calculated for the Australasian impactor. If, as numerous people have suggested, the projectile that produced the tektites was a comet, the chondritic matter would have been accompanied by a roughly equal mass of H2O ice and the total volume was 1.4 x 10^15 cm^3, corresponding to a sphere of radius 700 m. The collision of such bodies with the Earth at an asteroidal (as opposed to cometary velocity) of 20 km s^-1 would release of 2.2 x 10^20 J (chondrite) or 4.4 x 10^20 J (comet), sufficient to excavate craters having diameters 14 and 17 km, respectively, assuming a simple scaling relationship. The approximate mass required to produce a 10-km crater is one-half and one- quarter, respectively, of our estimated masses for the chondritic and cometary projectiles. Thus the formation of a crater large enough to launch tektites through the atmosphere is consistent with the formation of a multitude of smaller craters required to account for the layered tektites [5]. The most probable location of the missing large crater is in the Mekong Valley, in mountainous areas experiencing high erosion rates, or buried beneath Mekong sediments. References: [1] Burns (1990) Ph.D. thesis, Univ. of Delaware. [2] Smit et al. (1991) Proc. ODP, Sci. Res., 121, 489-503. [3] Schneider et al. (1992) EPSL, 111, 395-405; [4] Schmidt et al. (1993) GCA, submitted; [5] Wasson (1991) EPSL, 102, 95-109.

Schmidt, G.; Wasson, J. T.

1993-07-01

112

High levels of contaminants in ivory gull Pagophila eburnea eggs from the Russian and Norwegian Arctic.  

PubMed

We found high levels of contaminants, in particular organochlorines, in eggs of the ivory gull Pagophila eburnea, a high Arctic seabird species threatened by climate change and contaminants. An 80% decline in the ivory gull breeding population in the Canadian Arctic the last two decades has been documented. Because of the dependence of the ivory gull on sea ice and its high trophic position, suggested environmental threats are climate change and contaminants. The present study investigated contaminant levels (organochlorines, brominated flame retardants, perfluorinated alkyl substances, and mercury) in ivory gull eggs from four colonies in the Norwegian (Svalbard) and Russian Arctic (Franz Josef Land and Severnaya Zemlya). The contaminant levels presented here are among the highest reported in Arctic seabird species, and we identify this as an important stressor in a species already at risk due to environmental change. PMID:19708391

Miljeteig, Cecilie; Strøm, Hallvard; Gavrilo, Maria V; Volkov, Andrey; Jenssen, Bjørn M; Gabrielsen, Geir W

2009-07-15

113

The perception of AIDS in the Bété and Baoulé of the Ivory Coast  

Microsoft Academic Search

The purpose of this study was to gain a better understanding of the socio-cultural aspects of transmissible diseases, in particular AIDS perceptions, among the two major Ivorian ethnic groups, the Bété and Baoulé, in order to implement more suitable educational programmes. The methods used consist of structured interviews to obtain quantitative findings on knowledge and practices, and 'focus groups' and

Andrea Caprara; Dedy Seri; Giulio C. De Gregorio; Alessandro Parenzi; Carlos M. Salazar; Tapé Gozé

1993-01-01

114

Outbreak of typhoid fever in vaccinated members of the French Armed Forcesin the Ivory Coast  

Microsoft Academic Search

In 2001, an outbreak of typhoid fever occurred among the members of the French Armed Forces. All had received a typhoid vaccination as per the immunization schedule practiced in the Armed Forces (every 5 years). A retrospective cohort study was conducted in 94 personnel. The objectives were to confirm the diagnosis, determine the source of contamination and identify the factors associated

Rémy Michel; Eric Garnotel; André Spiegel; Marc Morillon; Pierre Saliou; Jean-Paul Boutin

2005-01-01

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

[Prevalence of asthma and respiratory diseases in schools in Bouake (Ivory Coast): preliminary results].  

PubMed

Using an auto-administered questionnaire, a cluster sample survey was carried out in January 1990 among 2433 secondary schoolchildren in Bouake (Cote d'Ivoire). The prevalence rate of asthma was fairly high (10.8%), as well as that of wheezing (19.8%), dyspnea (42.8%), broncho-pulmonary diseases (25.8%) and smoking habit (14.5%). The results are discussed with regard to the published data. PMID:1331695

Roudaut, M; Meda, A H; Seka, A; Fadiga, D; Pigearias, B; Akoto, A

117

[Antimalarial guidelines and therapy practices of the population of Bouake, Ivory Coast].  

PubMed

This survey of 162 households in the city of Bouaké, Côte d'Ivoire was undertaken to study the behavior of the population in diagnosing and treating malaria. Findings indicate that awareness of symptoms and ability to evaluate the severity of malaria is high. In most cases, mild malaria is treated at home. In case of presumptive diagnosis of malaria, 87.6% of households undertake self-treatment, 9.3% seek institutional healthcare, 1.2% go to traditional healers, and 1.9% use traditional remedies. The most frequent drug for primary treatment is chloroquine (68.3%) which is generally obtained from pharmacies (98.8%). However, proper dosages are rarely used. If primary treatment fails, behavior is complex depending on the estimated severity of disease. Although many causes of malaria are mentioned, most people implicate mosquitoes (75.6%). In 95.1% of households surveyed, chloroquine prophylaxis was used for newborns. Most households (89.5%) practice mosquito bite protection but use of mosquito nets is low (4.9%). These results showing the preference for family-based management suggest that informational campaigns are needed to promote effective and consistent home treatment. Education is also needed to increase knowledge about mosquito nets and insecticides. PMID:11980399

Dossou-Yovo, J; Amalaman, K; Carnevale, P

2001-01-01

118

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

119

New Potassium-Argon Ages for Georgiaites and the Upper Eocene Dry Branch Formation (Twiggs Clay Member): Inferences About Tektite Stratigraphic Occurrence  

NASA Astrophysics Data System (ADS)

The tektites of east-central Georgia, called "georgiaites," are a subset of the larger North American tektite strewn field. Previous studies have reported the potassium-argon age of Georgia tektites at 32.0 Ma, 33.7 Ma, and 34.0 Ma, respectively. Glass et al., using the 40Ar-39Ar method, obtained a 34.5 Ma age for a single Muong Nong type georgiaite. Corrected fission track ages given by Storzer et al. have a range between 1.0 and 35.8 Ma with the lower dates accounted for by post-depositional thermal alteration. However, isotopic dating of North American microtektites from Barbados suggests that the strewn field was produced at 35.4 (+/- 0.6) Ma. In addition to the lack of consistently reliable age data for Georgia tektites, their stratigraphic occurrence has yet to be satisfactorily resolved. Although the North American strewn field was deposited in the late Eocene, georgiaites have been found only on formations ranging in age from Oligocene to Pleistocene so are thought to have been transported from their original site of deposition. In this investigation we present new potassium-argon ages for the Georgia tektites and an upper Eocene formation in an effort to resolve tektite stratigraphic location in coastal main deposits of east-central Georgia.

Albin, E. F.; Wampler, J. M.

1996-03-01

120

Mid-Pleistocene divergence of Cuban and North American ivory-billed woodpeckers  

PubMed Central

We used ancient DNA analysis of seven museum specimens of the endangered North American ivory-billed woodpecker (Campephilus principalis) and three specimens of the species from Cuba to document their degree of differentiation and their relationships to other Campephilus woodpeckers. Analysis of these mtDNA sequences reveals that the Cuban and North American ivory bills, along with the imperial woodpecker (Campephilus imperialis) of Mexico, are a monophyletic group and are roughly equidistant genetically, suggesting each lineage may be a separate species. Application of both internal and external rate calibrations indicates that the three lineages split more than one million years ago, in the Mid-Pleistocene. We thus can exclude the hypothesis that Native Americans introduced North American ivory-billed woodpeckers to Cuba. Our sequences of all three woodpeckers also provide an important DNA barcoding resource for identification of non-invasive samples or remains of these critically endangered and charismatic woodpeckers.

Fleischer, Robert C; Kirchman, Jeremy J; Dumbacher, John P; Bevier, Louis; Dove, Carla; Rotzel, Nancy C; Edwards, Scott V; Lammertink, Martjan; Miglia, Kathleen J; Moore, William S

2006-01-01

121

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

122

Dating ivory by determination of 14C, 90Sr and 228/232Th.  

PubMed

A method is described to determine the time of death of elephants. This is accomplished by analysis of the radionuclides 14C, 90Sr and 228/232Th in known samples of ivory, and in samples of unknown age. The reliability of this method is considerably increased by multi nuclide analysis. PMID:22717552

Schmied, Stefanie A K; Brunnermeier, Matthias J; Schupfner, Robert; Wolfbeis, Otto S

2012-06-18

123

The Human Ecology of World Systems in East Africa: The Impact of the Ivory Trade  

Microsoft Academic Search

The impact on human ecology of the ivory trade entailed direct and indirect effects. First, the reduction or extermination of elephant populations had direct effects on the vegetation patterns over large areas. Second, the economic activities connected with hunting, transport, and trading affected regional systems of exchange and thereby, indirectly through the political economy, settlements, patterns of resource utilization, population

N. Thomas Håkansson

2004-01-01

124

Fingerprinting of ivory and horn through the application of nuclear analytical techniques  

Microsoft Academic Search

The feasibility of fingerprinting elephant ivory and rhino horn to establish the origin and accordingly promote the sale of legally stockpiled reserves from South Africa into the (closed) world markets have been investigated in the past, and preliminary studies with non-nuclear techniques look promising. The Research Reactor programme within the framework of AFRA is currently becoming bent on applications of

F. J. Fouché; D. Kotze; I. Louw

2003-01-01

125

Asians in the Ivory Tower: Dilemmas of Racial Inequality in American Higher Education. Multicultural Education Series  

ERIC Educational Resources Information Center

Highly respected scholar Robert Teranishi draws on his vast research to present this timely and compelling examination of the experience of Asian Americans in higher education. "Asians in the Ivory Tower" explores why and how Asian Americans and Pacific Islanders (AAPIs) are important to our nation's higher education priorities and places the…

Teranishi, Robert T.

2010-01-01

126

Heat induced transformation of fossil mastodon ivory into turquoise ‘odontolite’. Structural and elemental characterisation  

Microsoft Academic Search

The present work deals with the structural and elemental analysis of turquoise mineral imitations as ‘odontolite’ or bone turquoise by transmission electron microscopy (TEM), scanning electron microscopy (SEM–EDX) and particle induced X-ray and ?-ray emission (PIXE–PIGE). The aim of the work is to evidence the former deliberate transformation of fossilised ivory by man in order to transform them into semi-precious

I. Reiche; C Vignaud; M Menu

2000-01-01

127

Nondestructive discrimination of ivories and prediction of their specific gravity by Fourier-transform Raman spectroscopy and chemometrics.  

PubMed

Fourier-transform (FF) Raman spectroscopy and chemometrics were used for nondestructive analysis of ivories. The discrimination of five kinds of ivories, two subspecies of African elephant, mammoth, hippopotamus, and sperm whale, was investigated, and a calibration model for predicting their specific gravity was developed. FT-Raman spectra were measured in situ for them and chemometrics analyses were carried out for the 3050-350 cm(-1) region. The five kinds of ivories were clearly discriminated from each other on the scores plots of two or three principal components (PCs) obtained by principal component analysis (PCA). The loadings plot for PC 1 shows that the discrimination relies on the content ratio of organic collagenous protein and inorganic hydroxyapatite of ivories. The loadings plot for PC 2 shows that bands due to the CH3 and CH2 stretching modes of the protein also play a role in the discrimination. Using partial least squares regression (PLSR), we developed a calibration model that predicts the specific gravity of the ivories from the FT-Raman spectra. The correlation coefficient and root mean square error of cross validation (RMSECV) of this model were 0.980 and 0.024, respectively. PMID:12894836

Shimoyama, Masahiko; Ninomiya, Toshio; Ozaki, Yukihiro

2003-07-01

128

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

2012-07-27

129

[Intestinal parasites in children in Biankouma, Ivory Coast (mountaineous western region): efficacy and safety of praziquantel and albendazole].  

PubMed

Schistosomiasis and soil-transmitted helminthiasis are a global public health problem, especially among schoolchildren. The purpose of this study was to determine the overall and specific prevalences of intestinal helminth infection and to assess the clinical efficacy, tolerance, and safety of praziquantel and albendazole for treating it. A descriptive cross-sectional study based on random sampling with one degree of freedom was conducted from November 2006 to March 2007 in the primary schools of Biankouma, Côte d'Ivoire. Stool samples were collected from 386 children aged from 4 to 15 years and analyzed by direct examination, with both the simplified Ritchie and Kato techniques. Children infected by schistosomiasis and soil-transmitted helminthiasis eggs were treated with praziquantel (40 mg/kg in a single dose), albendazole (400 mg/kg in a single dose) or both, as deemed necessary. The prevalence rate of intestinal parasite infection was 55.2%, including overall 15.4% with more than one parasite: two in 14.2% and three in 1.2%. Infection was correlated with male gender and older age. The most frequent helminths were Schistosoma mansoni (35.5%) and Necator americanus (25.9%). The efficacy rate for praziquantel, defined as parasite-free stools, was 57.7% on day 14 and 80.9% on day 90. The efficacy rate for albendazole on day 7 was 96.1% for Ascaris lumbricoides, 93% for Necator americanus and 81.3% for Trichuris trichiura. Adverse effects were common (40.8%) but minor (abdominal pain, headache, and itching) within 2 to 4 hours after intake of praziquantel. PMID:23107664

Adoubryn, K D; Kouadio-Yapo, C G; Ouhon, J; Aka, N A D; Bintto, F; Assoumou, A

130

Ethno?regional demands, symbolic and redistributive politics: Sugar complexes in the north of the Ivory Coast  

Microsoft Academic Search

The role of the state in Africa in terms of resource allocation is generally linked to class politics and demands. Policy processes are shaped by powerful class factors, usually urban, which lead to a biased allocation of economic goods. Ethnicity and regional factors are not totally ignored but are often treated as epiphenomenal to the overall dynamics that determine who

Dwayne Woods

1989-01-01

131

Core area analysis at semi-deciduous forest islands in the Comoé National Park, NE Ivory Coast  

Microsoft Academic Search

For the protection of forest-interior species in both natural forest islands and anthropogenic forest fragments knowledge\\u000a on the size of forest-core areas is a central issue. In an intact mosaic of semi-deciduous forests and savanna in the Comoé\\u000a National Park 31 forest islands were selected (2.1–146.1 ha). Values for the depth-of-edge influence (DEI) of the study area\\u000a recently published range from

Klaus J. Hennenberg; Bettina Orthmann; Ingo Steinke; Stefan Porembski

2008-01-01

132

In situ metabolic budget for the calanoid copepod Acartia clausi in a tropical brackish water lagoon (Ebrié Lagoon, Ivory Coast)  

Microsoft Academic Search

Simultaneous measurements of respiration, excretion and production rates were carried out several times over a year period at five representative stations of the Ebrié Lagoon. Assuming a constant assimilation efficiency rate of 69.4%, we derived metabolic budgets for carbon, nitrogen and phosphorus. Daily specific ingestion rates calculated were rather generally high, and ranged between 54 and 159% of body carbon,

M. Pagano; L. Saint-Jean

1994-01-01

133

The role of savannas in the terrestrial Si cycle: A case-study from Lamto, Ivory Coast  

Microsoft Academic Search

Savannas currently occupy a fifth of the earth's land surface and are predicted to expand in the next few centuries at the expense of tropical forests, mainly as a result of deforestation and human fires. Can such a vegetation trend impact, through changes in plant Si cycling, the lithogenic silicon (LSi) release into soils (through chemical weathering) and the net

Anne Alexandre; Mickael Bouvet; Luc Abbadie

2011-01-01

134

Levels and trends of organochlorines and brominated flame retardants in ivory gull eggs from the Canadian Arctic, 1976 to 2004.  

PubMed

The ivory gull (Pagophila eburnea) is a circumpolar marine bird which has recently been listed as an endangered species in Canada. To determine whether contaminants may be playing a role in the population decline of this species, ivory gull eggs collected in 1976, 1987 and 2004 from Seymour Island in the Canadian Arctic were analyzed for organochlorines, polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and non-ortho PCBs. This study also provides the first account of polybrominated diphenyl ethers (PBDEs), hexabromocyclododecanes (HBCDs) and polybrominated biphenyls (PBBs) in ivory gulls. The most quantitatively abundant legacy organochlorines found in the ivory gull eggs were p,p'-DDE, SigmaPCB and oxychlordane. Concentrations of the organochlorines analyzed either decreased or showed little change between 1976 and 2004. Concentrations of SigmaPCDD in ivory gull eggs were greater than SigmaPCDF, and the non-ortho PCBs (primarily PCB-126) contributed the largest fraction to the total TEQ value in all years sampled. Concentrations of PCDDs, PCDFs and SigmaTEQ decreased from 1976 to 2004. In contrast, concentrations of the PBDEs steadily increased between 1976 and 2004 driven primarily by increases in BDE-47. Although concentrations of the persistent chlorinated compounds (i.e. organochlorine pesticides, PCBs, PCDDs, PCDFs) reported in this study were below published toxicological threshold values for eggs of wild birds, we cannot rule out the possibility of synergistic/additive, sublethal effects. Very few studies have been carried out to evaluate the exposure-effect relationship of the persistent brominated compounds in avian species. Given the scarcity of information on toxicity threshold levels for PBBs and PBDEs in avian species, coupled with the trend toward increasing concentrations in ivory gulls, continued monitoring and further toxicological studies of these compounds are warranted. PMID:17412396

Braune, Birgit M; Mallory, Mark L; Grant Gilchrist, H; Letcher, Robert J; Drouillard, Ken G

2007-04-05

135

Non-destructive analysis of the two subspecies of African elephants, mammoth, hippopotamus, and sperm whale ivories by visible and short-wave near infrared spectroscopy and chemometrics.  

PubMed

Visible (VIS) and short-wave near infrared (SW-NIR) spectroscopy was used for non-destructive analysis of ivories. VIS-SW-NIR (500-1000 nm) spectra were measured in situ for five kinds of ivories, that is two subspecies of African elephants, mammoth, hippopotamus, and sperm whale. Chemometrics analyses were carried out for the spectral data from 500 to 1000 nm region. The five kinds of ivories were clearly discriminated from each other on the scores plot of two principal components (PCs) obtained by principal component analysis (PCA). It was noteworthy that the ivories of the two subspecies of African elephants were discriminated by the scores of PC 1. The loadings plot for PC 1 showed that the discrimination relies on the intensity changes in bands due to collagenous proteins and water interacting with proteins. It was found that the scores plot of PC 2 is useful to distinguish between the ivories of the two subspecies of African elephants and the other ivories. We also developed a calibration model that predicted the specific gravity of five kinds of ivories from their VIS-SW-NIR spectral data using partial least squares (PLS)-1 regression. The correlation coefficient and root mean square error of cross validation (RMSECV) of this model were 0.960 and 0.037, respectively. PMID:15152335

Shimoyama, Masahiko; Morimoto, Susumu; Ozaki, Yukihiro

2004-04-20

136

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

137

Gone but not Forgotten? The Use of Airborne Laser Mapping in the Recovery Strategy for the Ivory-billed Woodpecker  

Microsoft Academic Search

The reappearance of the ivory-billed woodpecker in 2004, long-thought to be extinct, has created considerable controversy. Millions of dollars have been spent in the subsequent search to provide confirmation of the sightings, and thus validate what would be one of the great avian rediscoveries of our time. Recent searches for the woodpecker in the Cache and White River National Wildlife

R. Dubayah; M. Hofton; J. B. Blair; B. Uihlein; A. Keister

2006-01-01

138

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

2012-06-04

139

The Case of the Ivory-Billed Woodpecker: The Scientific Process and How It Relates to Everyday Life  

ERIC Educational Resources Information Center

In this case study, based on the reported rediscovery of the Ivory-billed Woodpecker in April 2005, students examine a real-world example of the scientific process and explore the practical implications of their conclusions. The case tells the story of Brad Murky, a student and research assistant who must decide whether the available evidence is…

Stanger-Hall, Kathrin; Merriam, Jennifer; Greuling, Ruth Ann

2007-01-01

140

Living on the Coast  

NSDL National Science Digital Library

This video, adapted from material provided by the ECHO partners, illuminates how living on the coast affects individuals and communities, particularly humans' interrelationships with natural resources.

Foundation, Wgbh E.

2007-02-12

141

West Coast Shipwrecks  

NSDL National Science Digital Library

In this data activity, learners will explore shipwrecks from four National Marine Sanctuaries on the West Coast of the United States. Learners will practice map skills while exploring historical and modern ocean navigation technology.

Rose, Laura

2013-01-04

142

African elephants show high levels of interest in the skulls and ivory of their own species  

PubMed Central

An important area of biology involves investigating the origins in animals of traits that are thought of as uniquely human. One way that humans appear unique is in the importance they attach to the dead bodies of other humans, particularly those of their close kin, and the rituals that they have developed for burying them. In contrast, most animals appear to show only limited interest in the carcasses or associated remains of dead individuals of their own species. African elephants (Loxodonta africana) are unusual in that they not only give dramatic reactions to the dead bodies of other elephants, but are also reported to systematically investigate elephant bones and tusks that they encounter, and it has sometimes been suggested that they visit the bones of relatives. Here, we use systematic presentations of object arrays to demonstrate that African elephants show higher levels of interest in elephant skulls and ivory than in natural objects or the skulls of other large terrestrial mammals. However, they do not appear to specifically select the skulls of their own relatives for investigation so that visits to dead relatives probably result from a more general attraction to elephant remains.

McComb, Karen; Baker, Lucy; Moss, Cynthia

2005-01-01

143

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

144

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

145

Northwest Coast Indian Art.  

ERIC Educational Resources Information Center

|The visual art forms of the Northwest Coast Indian Tribes of Alaska (Haida, Tlingit, and Tsimshian) share common distinctive design elements (formline, ovoid, U-form, and curvilinear shapes) which are referred to as the "Northern Style." Designs represent events or characters taken from the oral tradition of song and legend. Characteristics of…

Manning, Thomas; Knecht, Elizabeth

146

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

147

Mapping The Pacific Coast  

NSDL National Science Digital Library

Maps of the Pacific Coast from the earliest period of European exploration continue to interest cartographers, geographers, and antiquarians. The maps in the Quivira Collection date from 1540 to 1802 and include early depictions of California as an island, Russian cartographic interpretations of the Pacific Coast, and overland maps across the continent westward to the ocean. All told, this online collection includes forty-five maps, books, and illustrations organized into six thematic galleries. Visitors can start by listening to an audio introduction, and then look around through the thematic galleries, which include such intriguing headings as " In the Wake of Captain James Cook" and "Secret Russian Explorations in the Pacific". Of course, visitors must click their way into the "California as an Island" section, if not just for a taste of six examples of what is perhaps one of the best-known cartographic mistakes in the world.

148

Maine coast winds  

SciTech Connect

The Maine Coast Winds Project was proposed for four possible turbine locations. Significant progress has been made at the prime location, with a lease-power purchase contract for ten years for the installation of turbine equipment having been obtained. Most of the site planning and permitting have been completed. It is expect that the turbine will be installed in early May. The other three locations are less suitable for the project, and new locations are being considered.

Avery, Richard

2000-01-28

149

Description of microsatellite markers and genotyping performances using feathers and buccal swabs for the Ivory gull (Pagophila eburnea).  

PubMed

We report 22 new polymorphic microsatellites for the Ivory gull (Pagophila eburnea), and we describe how they can be efficiently co-amplified using multiplexed polymerase chain reactions. In addition, we report DNA concentration, amplification success, rates of genotyping errors and the number of genotyping repetitions required to obtain reliable data with three types of noninvasive or nondestructive samples: shed feathers collected in colonies, feathers plucked from living individuals and buccal swabs. In two populations from Greenland (n=21) and Russia (Severnaya Zemlya Archipelago, n=21), the number of alleles per locus varied between 2 and 17, and expected heterozygosity per population ranged from 0.18 to 0.92. Twenty of the markers conformed to Hardy-Weinberg and linkage equilibrium expectations. Most markers were easily amplified and highly reliable when analysed from buccal swabs and plucked feathers, showing that buccal swabbing is a very efficient approach allowing good quality DNA retrieval. Although DNA amplification success using single shed feathers was generally high, the genotypes obtained from this type of samples were prone to error and thus need to be amplified several times. The set of microsatellite markers described here together with multiplex amplification conditions and genotyping error rates will be useful for population genetic studies of the Ivory gull. PMID:21518427

Yannic, Glenn; Sermier, Roberto; Aebischer, Adrian; Gavrilo, Maria V; Gilg, Olivier; Miljeteig, Cecilie; Sabard, Brigitte; Strøm, Hallvard; Pouivé, Emmanuelle; Broquet, T

2011-04-26

150

The Red Light in the Ivory Tower: Contexts and Implications of Entrepreneurial Education. Counterpoints: Studies in the Postmodern Theory of Education. Volume 401  

ERIC Educational Resources Information Center

|"The Red Light in the Ivory Tower: Contexts and Implications of Entrepreneurial Education" critically analyzes the operational behaviors of prestigious and prestige-seeking universities, particularly within the context of budget shortfalls and increasing competition. The book challenges entrepreneurial activities within universities by exploring…

Breault, Donna Adair; Callejo Perez, David M.

2012-01-01

151

Coasts In Crisis  

NSDL National Science Digital Library

This United States Geological Survey publication (Circular 1075) is the first of a planned group of monographs in a series called "Public Issues in Earth Science." It discusses the dangers posed to coasts and coastal communities by "development, recreation, and waste disposal," among other activities. It describes the ever changing nature of coastlines, and both the natural and human causes of coastal change. Four case studies are very briefly described. While not an exhaustive treatment of its subject, this is an effective introduction that may encourage further study. A small bibliography is provided.

Williams, S. J.; Dodd, Kurt.; Gohn, Kathleen K.

1997-01-01

152

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

153

North and South Carolina Coasts  

Microsoft Academic Search

This coastal region of North and South Carolina is a gently sloping plain, containing large riverine estuaries, sounds, lagoons, and salt marshes. The most striking feature is the large, enclosed sound known as the Albemarle–Pamlico Estuarine System, covering approximately 7530 km2. The coast also has numerous tidal creek estuaries ranging from 1 to 10 km in length. This coast has

MICHAEL A. MALLIN; JOANN M. BURKHOLDER; LAWRENCE B. CAHOON; MARTIN H. POSEY

2000-01-01

154

Emissions and concentrations of hydrogen sulfide in the air of the tropical forest of the Ivory Coast and of temperate regions in France  

Microsoft Academic Search

Atmospheric H2S was measured by a fluorometric method (sensitivity 10 ng). In France, for aerated soils the emissions were between 0.8 and 27 mug m-2 h-1 H2S (average 5 mug m-2 h-1). The soil temperature is an important factor governing this emission. The H2S concentrations in the air ranged from 0.017 to 0.17 mug m-3 (average 0.080 mug m-3). In

Robert Delmas; Jean Baudet; Jean Servant; Yves Baziard

1980-01-01

155

Aquatic macroinvertebrate assemblages associated with root masses of water hyacinths, Eichhornia crassipes (Mart.) Solms-Laubach, 1883 (Commelinales: Pontederiaceae) in Taabo Lake, Ivory Coast  

Microsoft Academic Search

We examined aquatic macroinvertebrates associated with Eichhornia crassipes roots at five sampling sites in Taabo Lake. An average density of 1644 individuals (ind.)\\/m was recorded. In total, 68 macroinvertebrate taxa belonging to 34 families and 14 orders were identified. Among these, Insecta was predominant (77.94%). The highest densities were recorded at Taabo cité during both rainy and dry seasons. Taxon

M. K. Kouamé; M. Y. Diétoa; S. K. Da Costa; E. O. Edia; A. Ouattara; G. Gourène

2010-01-01

156

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).

157

The Economic Value of Breastfeeding (With Results from Research Conducted in Ghana and the Ivory Coast). Cornell International Nutrition Monograph Series Number 6.  

ERIC Educational Resources Information Center

This monograph focuses attention on economic considerations related to infant feeding practices in developing countries. By enlarging on previous methodologies, this paper proposes to improve the accuracy of past estimates of the economic value of human milk, or more specifically, the practice of breastfeeding. The theoretical model employed…

Greiner, Ted; And Others

158

SPATIAL EXPRESSIONS OF SLEEPING SICKNESS IN IVORY COAST AND GUINEA CONAKRY REMOTE SENSING AND SPATIAL ANALYSIS CONTRIBUTIONS TO MAP HUMAN AFRICAN TRYPANOSOMIASIS RISK AREA  

Microsoft Academic Search

At the end of 19th century in western Africa sleeping sickness - Human African Trypanosomiasis - was responsible for a lot of death in an entire state of complete Disorganisation caused by foreign political intervention. A very large movement of important population modified histori- cal natural equilibrium and humans were in active contact with the disease's vector, the Tse- Tse

Dominique Laffly; Pascal Handschumacher

159

Chemical composition and insecticidal activity of essential oils of two aromatic plants from Ivory Coast against Bemisia tabaci G. (Hemiptera: Aleyrodidae).  

PubMed

Essential oils of aromatic plants with insecticidal properties are nowadays considered as alternative insecticides to protect cultures from attack by insect pest. The aims of the present work were to evaluate the toxicity of the essential oils vapors of two aromatic plants (Lippia multiflora Mold. and Aframomum latifolium K. Schum) against Bemisia tabaci and to characterize their chemical composition. The highest fumigant toxicity against B. tabaci adults was observed with the L. multiflora oil: by exposure to 0.4 microL/L air, the lethal time inducing 90% mortality (LT90) was below 2 hours for this essential oil whereas it reached 15 h in the case of the A. latifolium oil. Both oils were analyzed by GC-FID and GC-MS on two capillary columns. The oil of L. multiflora contained a majority of oxygenated terpenoids mainly represented by the two acyclic components linalool (46.6%) and (E)-nerolidol (16.5%); the oil of A. latifolium was dominated by hydrocarbonated terpenoids among them beta-pinene (51.6%) and beta-caryophyllene (12.3%) were the two major components. PMID:21922931

Tia, Etienne V; Adima, Augustin A; Niamké, Sébastien L; Jean, Gnago A; Martin, Thibaud; Lozano, Paul; Menut, Chantal

2011-08-01

160

The Reception and Animation of Out-of-School Educational Television Programs in the Ivory Coast: A Case Study of Four Villages.  

National Technical Information Service (NTIS)

Rural animation, as a global approach to development, necessarily includes the three successive stages of informing the public, educating the public, and organizing the public for action. This report represents an English summary of a French-language stud...

A. Beneveniste

1975-01-01

161

[Epidemiology of human and animal brucellosis in western Africa. The results of six studies in the Ivory Coast, Upper Volta, and Nigeria].  

PubMed

Brucellosis has a two-fold importance in public health: the transmission of the disease to man by contact with animals or ingestion of raw milk is of direct importance; of indirect importance is the loss of animal protein. The authors have carried out ten epidemiological investigations in different bio-climatic zones of West Africa. More than 120 villages were evaluated. In each village, 100 persons were chosen at random and all or part of the animal population was also studied. Three tests were used for man: the melitin intradermal reaction, the sero-agglutination test of Wright and the complement fixation test. Three tests were used for the animals, the "ring-test" and the same serologic tests used for humans. The results indicated that brucellosis in animals exists in all regions but with varying rates. The bovine species seems to be the most contaminated. The enzooty becomes more widespread towards the South. Human brucellosis was not found to be of great importance in the regions mainly populated by farmers. Shepherds and their families in these zones, however, were found to have been infected. The highest percentage of infected humans was found in the sahelian zone (in Dori 30% of the intradermal reactions and 10% of serologies were positive for humans) in spite of a rather low infection rate among animals (6%-8% ring-tests positive among cattle). The majority of the population are shepherds and close cohabitation with animals is common. A basic dietary constituent is milk, which is often consumed raw (variable according to ethnic group), and provides the principal source of animal protein. Adults were found to have a significantly higher intradermal reaction rate in most of the regions studied. The positivity rate was higher in men than in women. In non-pastoral areas the shepherds and their families had a singificantly higher positivity rate than the general population. Ethnic differences were found. Also considered in this paper are intradermal reaction sizes, the relation between intradermal and serologic results, the modes of human transmission of the disease, and the relationship between human and animal forms of brucellosis. PMID:177324

Gidel, R; Albert, J P; Le Mao, G; Retif, M

1976-01-01

162

Andrew spares Florida Coast  

NASA Astrophysics Data System (ADS)

When geologists heard of the intensity of Hurricane Andrew, which struck the Florida coast on August 25 and then moved on to southern Louisiana, they were expecting the same kinds of coastal damage that Hurricane Hugo brought to the Caribbean and Carolina shores in 1989. Both storms were category 4 hurricanes, having winds of 131-155 mph and surges of 13-18 feet. However, the coastal damage never materialized, leaving geologists to analyze the factors that lessened the impact of the storm. “For minimum coastal damage, you couldn't have designed a better storm,” said Orrin Pilkey, director of the Program for the Study of Developed Shorelines (PSDS) in Durham, N.C. This was due in part to the nature of the storm itself and where it hit land, and in part to the regional geology, said Rob Thieler of PSDS. Despite the huge amounts of damage to buildings, there was virtually no evidence of coastal process destruction, he said.

Bush, Susan

163

California Coast Nearshore Processes Study.  

National Technical Information Service (NTIS)

The author has identified the following significant results. Large scale sediment plumes from intermittent streams and rivers form detectable seasonal patterns on ERTS-1 imagery. The ocean current systems, as plotted from three California coast ERTS mosai...

D. M. Pirie D. D. Steller

1973-01-01

164

SEABIRDS OFF THE SOUTHWESTERN COAST OF AFRICA  

Microsoft Academic Search

Summerhayes, C. P., Hofmeyr. P. K. & Rioux, R. H. 1974. Seabirds off the southwestern coast of Africa. Ostrich 45: 83–109.The distribution of seabirds off the southwestern coast of Africa was observed during April. May and November, and observed south of Africa in March. Most seabirds off the west coast were concentrated near to the coast or over the edge

C. P. Summerhayes; P. K. Hofmeyr; Raymond H. Rioux

1974-01-01

165

West Coast Earthquakes Ongoing, Scientists Discover  

NSF Publications Database

... Jim Whitcomb (703) 292-8553 jwhitcom@nsf.gov West Coast Earthquakes Ongoing, Scientists Discover ... earthquake going on right now on the West Coast, yet no one feels it. The temblor, a so-called slow ...

166

27 CFR 9.104 - South Coast.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false South Coast. 9.104 Section 9.104 ...American Viticultural Areas § 9.104 South Coast. (a) Name. The name of the...viticultural area described in this section is âSouth Coast.â (b) Approved maps....

2013-04-01

167

40Ar- 39Ar laser dating of tektites from the Cheb Basin (Czech Republic): Evidence for coevality with moldavites and influence of the dating standard on the age of the Ries impact  

NASA Astrophysics Data System (ADS)

Moldavites (Central European tektites) are genetically related to the impact event that produced the ˜24-km diameter Ries crater in Germany, representing one of the youngest large impact structures on Earth. Although several geochronological studies have been completed, there is still no agreement among 40Ar- 39Ar ages on both moldavites and glasses from Ries suevites. Even recently published data yielded within-sample mean ages with a nominal spread of more than 0.6 Ma (14.24-14.88 Ma). This age spread, which significantly exceeds current internal errors, must be in part ascribed to geological and/or analytical causes. This study reports the results of a detailed geochronological investigation of moldavites from the Cheb area (Czech Republic), which have never been dated before, and, for comparison, of two samples from type localities, one in southern Bohemia and the other in western Moravia. We used 40Ar- 39Ar laser step-heating and total fusion techniques in conjunction with microscale petrographic and chemical characterization. In addition, with the purpose of ascertaining the influence of the dating standards on the age of the Ries impact and making data from this study and literature consistent with the now widely used Fish Canyon sanidine (FCs) standard, we performed a direct calibration of multi-grain splits of the Fish Canyon biotite (FCT-3) with FCs. The intercalibration factors ( RFCsFCT-3), determined for eight stack positions in one of the three performed irradiations, were indistinguishable within errors and gave an arithmetic mean and a standard deviation of 1.0086 ± 0.0031 (±2 ?), in agreement with previous works suggesting that biotite from the Fish Canyon Tuff is somewhat older (˜0.8%) than the coexisting sanidine. Laser total fusion analysis of milligram to sub-milligram splits of five tektite samples from the Cheb area yielded mostly concordant intrasample 40Ar- 39Ar ages, and within-sample weighted mean ages of 14.66 ± 0.08-14.75 ± 0.12 Ma (±2 ? internal errors, ages relative to FCs) that overlap within errors. These ages match those obtained for samples from western Moravia (14.66 ± 0.08 Ma) and southern Bohemia (14.68 ± 0.11 Ma), supporting the genetic link between Cheb Basin tektites and moldavites, and, consequently, between Cheb Basin tektites and the Ries impact. In contrast to samples from the Cheb area and Moravia, 40Ar- 39Ar ages from total fusion experiments on the Bohemian specimen ranged widely from ˜14.6 to ˜17.0 Ma. Older apparent ages, however, were systematically obtained from fragments characterized by visible surface alteration. Laser step-heating experiments, although displaying slightly disturbed age profiles, were in line with total fusion analyses and yielded well-defined plateau ages of 14.64 ± 0.11-14.71 ± 0.11 Ma (±2 ? internal errors, ages relative to FCs). A thorough comparison of our and previous 40Ar- 39Ar ages on both moldavites and Ries suevite glasses, recalculated relative to the 40Ar ?/ 40K ratio recently determined for FCs using intercalibration factors available in or derivable from the literature, reveals some inconsistencies which may be ascribed to either geological or analytical causes. Based on our data, decay constants in current use in geochronology, and ages calculated relative to FCs, we infer that the age of moldavites is 14.68 ± 0.11 Ma (±2 ?, neglecting uncertainties in the 40K decay constants).

Di Vincenzo, Gianfranco; Skála, Roman

2009-01-01

168

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

2012-01-17

169

A.I.D. Spring Review of Small Farmer Credit. Volume VI. Small Farmer Credit in Africa.  

National Technical Information Service (NTIS)

Contents: 'Small Farmer Agricultural Credit in Ivory Coast' by The Staff of the National Bank for Agricultural Development; 'National Center for Promotion of Cooperative Enterprises in Ivory Coast' by Samuel Nnebe; 'Institutional Credit for Smallholder Fa...

1973-01-01

170

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

171

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…

Peacock, Alan

2007-01-01

172

It comes down to the coasts  

Microsoft Academic Search

Along the coasts, biological productivity is much higher than for the rest of the planet's surface. If the coasts are to continue serving their essential ecological and economic functions, we will have to begin altering our patterns of human settlement and development. Half of the world's population lives within 50 miles of saltwater. This article discusses first the attraction of

2009-01-01

173

49 CFR 850.30 - Procedures for Coast Guard investigation.  

Code of Federal Regulations, 2012 CFR

... false Procedures for Coast Guard investigation. 850.30 Section 850.30 Transportation...TRANSPORTATION SAFETY BOARD MARINE CASUALTY INVESTIGATIONS § 850.30 Procedures for Coast Guard investigation. (a) The Coast Guard...

2012-10-01

174

49 CFR 850.30 - Procedures for Coast Guard investigation.  

Code of Federal Regulations, 2011 CFR

... false Procedures for Coast Guard investigation. 850.30 Section 850.30 Transportation...TRANSPORTATION SAFETY BOARD MARINE CASUALTY INVESTIGATIONS § 850.30 Procedures for Coast Guard investigation. (a) The Coast Guard...

2011-10-01

175

50 CFR 660.50 - Pacific Coast treaty Indian fisheries.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Pacific Coast treaty Indian fisheries. 660.50 Section 660.50...Fisheries § 660.50 Pacific Coast treaty Indian fisheries. (a) Pacific Coast treaty Indian tribes have treaty rights. Pacific...

2012-10-01

176

50 CFR 660.706 - Pacific Coast Treaty Indian rights.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Pacific Coast Treaty Indian rights. 660.706 Section 660.706 ...Fisheries § 660.706 Pacific Coast Treaty Indian rights. (a) Pacific Coast treaty Indian tribes have treaty rights to harvest...

2012-10-01

177

50 CFR 660.518 - Pacific Coast Treaty Indian Rights.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Pacific Coast Treaty Indian Rights. 660.518 Section 660.518 ...Fisheries § 660.518 Pacific Coast Treaty Indian Rights. (a) Pacific Coast treaty Indian tribes have treaty rights to harvest CPS...

2012-10-01

178

The PEN-Ivory project: exploring user-interface design for the selection of items from large controlled vocabularies of medicine.  

PubMed Central

OBJECTIVE: To explore different user-interface designs for structured progress note entry, with a long-term goal of developing design guidelines for user interfaces where users select items from large medical vocabularies. DESIGN: The authors created eight different prototypes of a pen-based progress-note-writing system called PEN-Ivory. Each prototype allows physicians to write patient progress notes using simple pen-based gestures such as circle, line-out, and scratch-out. The result of an interaction with PEN-Ivory is a progress note in English prose. The eight prototypes were designed in a principled way, so that they differ from one another in just one of three different user-interface characteristics. MEASUREMENTS: Five of the eight prototypes were tested by measuring the time it took 15 users, each using a distinct prototype, to document three patient cases consisting of a total of 63 medical findings. RESULTS: The prototype that allowed the fastest data entry had the following three user-interface characteristics: it used a paging rather than a scrolling form, it used a fixed palette of modifiers rather than a dynamic "pop-up" palette, and it made available all findings from the controlled vocabulary at once rather than displaying only a subset of findings generated by analyzing the patient's problem list. CONCLUSION: Even simple design changes to a user interface can make dramatic differences in user performance. The authors discuss possible influences on performance, such as positional constancy, user uncertainty and system anticipation, that may contribute significantly to the effectiveness of systems that display menus of items from large controlled vocabularies of medicine.

Poon, A D; Fagan, L M; Shortliffe, E H

1996-01-01

179

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

180

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

181

The Future Management of the Oregon Coast.  

National Technical Information Service (NTIS)

Papers presented at the symposium dealt with the following subjects: legal background for coastal zone management; zoning laws and the coastal zone; importance of planning for the Oregon coast; environmental considerations of estuary management; balancing...

J. L. Jacobson

1973-01-01

182

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

183

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

184

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

185

46 CFR 4.03-20 - Coast Guard district.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Coast Guard district. 4.03-20 Section 4.03-20 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES... Definitions § 4.03-20 Coast Guard district. A Coast Guard district...

2012-10-01

186

46 CFR 50.10-25 - Coast Guard Symbol.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Coast Guard Symbol. 50.10-25 Section 50.10-25 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED...This Subchapter § 50.10-25 Coast Guard Symbol. (a) The term Coast...

2012-10-01

187

46 CFR 4.03-20 - Coast Guard district.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Coast Guard district. 4.03-20 Section 4.03-20 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES... Definitions § 4.03-20 Coast Guard district. A Coast Guard district...

2011-10-01

188

50 CFR 660.706 - Pacific Coast Treaty Indian rights.  

Code of Federal Regulations, 2011 CFR

... Pacific Coast Treaty Indian rights. 660.706 Section 660... Pacific Coast Treaty Indian rights. (a) Pacific Coast treaty Indian tribes have treaty rights to harvest HMS in their usual...a) fishing areas in U.S. waters. (b) Pacific Coast...

2011-10-01

189

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 EIA's recent analyses related to East Coast fuels markets.

2012-04-17

190

THE GULF COAST CARBON CENTER: DEVELOPING A CARBON SEQUESTRATION INDUSTRY IN THE GULF COAST REGION  

Microsoft Academic Search

The vision of the Gulf Coast Carbon Center is to seek to impact global levels of GHG in the atmosphere by doing science and engineering studies that will support reduction of CO2 emissions and enable the development of an economically viable, multifaceted, CO2 sequestration industry in the Gulf Coast. This industrial-academic consortium is investigating issues related to assessing the pathways

Ian J. Duncan; William A. Ambrose; Mark H. Holtz; Susan D. Hovorka; Vanessa Núñez López; Joesph Esandoh-Yeddu; Jean-Phillippe Nicot; Rebecca C. Smyth; Srivatsan Lakshminarasimhan

191

Chalk play tops Gulf Coast horizontal scene  

SciTech Connect

This paper reports on horizontal drilling in the Cretaceous Austin chalk of Texas which dominates news of U.S. Gulf Coast horizontal action. In spite of a significant decline in horizontal drilling in Texas-the Texas Railroad Commission reported a 15 unit decline in the number of permits to drill horizontal wells during the third quarter-operators in East and South Texas continue to expand plays and develop new ones. The Cretaceous Bruda may be gaining some respect as a horizontal target in Texas. Elsewhere on the Gulf Coast, Mississippi soon will see more action on the horizontal drilling front.

Not Available

1991-11-18

192

47 CFR 80.72 - Antenna requirements for coast stations.  

Code of Federal Regulations, 2012 CFR

...80.72 Antenna requirements for coast stations. All emissions of a coast station a marine-utility station operated on shore using telephony within the frequency band 30-200 MHz must be vertically...

2012-10-01

193

Readiness of the U.S. Coast Guard.  

National Technical Information Service (NTIS)

Continuing problems may prevent the Coast Guard from successfully carrying out its ongoing peacetime missions and assuming additional tasks to support Navy operations in wartime. Specifically, GAO found difficulties in assigning the Coast Guard wartime ta...

1982-01-01

194

46 CFR 107.117 - Coast Guard addresses.  

Code of Federal Regulations, 2012 CFR

...107.117 Section 107.117 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS INSPECTION AND CERTIFICATION General § 107.117 Coast Guard addresses. When approval of...

2012-10-01

195

33 CFR 118.30 - Action by Coast Guard.  

Code of Federal Regulations, 2013 CFR

...30 Section 118.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.30 Action by Coast Guard. (a) The District Commander receiving the application...

2013-07-01

196

33 CFR 118.30 - Action by Coast Guard.  

Code of Federal Regulations, 2010 CFR

...30 Section 118.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.30 Action by Coast Guard. (a) The District Commander receiving the...

2010-07-01

197

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...

198

Coasting cosmologies with time dependent cosmological constant  

Microsoft Academic Search

The effect of a time dependent cosmological constant is considered in a\\u000afamily of scalar tensor theories. Friedmann-Robertson-Walker cosmological\\u000amodels for vacumm and perfect fluid matter are found. They have a linear\\u000aexpansion factor, the so called coasting cosmology, the gravitational\\u000a\\

LUIS O. PIMENTELand; LUZ M. DIAZ-RIVERA

1998-01-01

199

Gulf Coast geopressure: old questions, new answers  

Microsoft Academic Search

A significant body of production and test data from the Gulf Coast geopressured zones indicates that these deep sediments contain some reservoir quality sandstones capable of extended production of moderately hot brine saturated with dissolved natural gas. The best of the test wells to date, the DOE Pleasant Bayou No. 2 in Brazoria County, Texas, flowed at a sustained rate

R. K. Swanson; W. J. Bernard; J. S. Osoba

1984-01-01

200

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...

201

US Coast Guard oil pollution control programs  

Microsoft Academic Search

Each year over a million tons of crude oil leaks from tankers and ships, while half as much again is deliberately dumped into the sea. This says nothing about 100,000 tons seeping out of offshore wells. There are many ways of reducing maritime pollution and the Coast Guard is continually exploring new ones. Response, for example, is an approach that

1972-01-01

202

Petroleum geology framework, West Coast offshore region  

Microsoft Academic Search

The west coast offshore region of western Canada is a large, relatively- unexplored frontier hydrocarbon province. It includes Queen Charlotte (QC) and Georgia basins on the continental shelf inboard of Queen Charlotte Islands and Vancouver Island, and Tofino and Winona basins on the continental shelf and slope west of Vancouver Island (Fig. 1). A number of exploration wells drilled on

James W. Haggart; James R. Dietrich; Henry V. Lyatsky

203

A new Coast Guard search technique  

Microsoft Academic Search

For three years the US Coast Guard Research and Development Center has been developing a novel airborne search technique. It shows promise of detecting liferafts with a 95% probability at a search rate of 250 nmi2\\/hr. An experimental design is presented in which the Naval Air Development Center modifies a high-performance IR (infrared) scanner to record on magnetic tape. The

1988-01-01

204

Coasting Beam in HERA-p Ring  

Microsoft Academic Search

This document is a report on stud ies of production\\/tr ansport mecha- nisms resulting in and of cures against a coasting beam halo observed at the HERA proton ring of DESY. Noises in the 208 MHz RF system, drift beyond RF buckets due to energy loss through synchrotron radiation of the high- energy protons and effect of adding the 52

S. Ivanov; O. Lebedev

2001-01-01

205

Expedition cruising along Australia's remote Kimberley coast  

Microsoft Academic Search

Expedition Cruising is growing rapidly around the world. One emerging destination is the Kimberley Coast of far north Western Australia. It is accessible almost exclusively by sea or air and has gained increasing popularity in recent years because of its spectacular scenery, pristine nature, Aboriginal rock art and remoteness, giving visitors the impression of exploring an ‘untouched’ world. Over recent

Ross Kingston Dowling; Pascal Scherrer; A J Smith

2010-01-01

206

Portable Extinguisher Evaluation for Coast Guard Cutters.  

National Technical Information Service (NTIS)

This test series evaluated existing extinguishers for use against incipient Class B fires occurring in machinery spaces aboard Coast Guard cutters. The tests were conducted on a full-scale machinery space mockup constructed inside a cargo hold on the SS M...

D. E. Beene R. C. Richards

1978-01-01

207

United States Coast Guard Recycling Guide.  

National Technical Information Service (NTIS)

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, in...

1996-01-01

208

Archaeological Remains on the Southern Somali Coast  

Microsoft Academic Search

This article describes a series of sites and their architectural remains (notably mosques, tombs—both with and without pillars—and town walls) on what can be described as the heartland of the Bajun coast in the extreme south of Somalia (fig. 1). The imported pottery collected from these sites suggests that none are earlier than the fourteenth or fifteenth century. Most of

Hilary Costa Sanseverino

1983-01-01

209

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…

Ard, R. W., Jr.

1976-01-01

210

Georgia coast braces for G-8 whirlwind  

Microsoft Academic Search

With the G-8 Summit in June, representatives of the world’s leading economies—along with vast media coverage—will converge on an isolated barrier island off Georgia’s coast. Local leaders are hoping to capitalize on the publicity windfall while avoiding the strife that has marred some past summits.

anonymous

2004-01-01

211

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

212

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

213

Regional tertiary cross sections: Texas Gulf Coast  

Microsoft Academic Search

Regional studies of the Frio Formation along the Texas Gulf Coast were conducted to evaluate potential geothermal energy from deep, geopressured sandstone reservoirs. Published regional cross sections, unpublished cross sections provided by several major oil companies, and extensive micropaleontological and electrical-log files at the Bureau of Economic Geology served as basic data. These sections are meant to show gross regional

D. G. Debout; P. E. Luttrell; J. H. Seo

1976-01-01

214

Geothermal resources, Wilcox Group, Texas Gulf Coast  

Microsoft Academic Search

Results are presented of a regional study to identify areas where the Wilcox Group contains significant thicknesses of sandstone with subsurface temperatures higher than 300°F. Eight of these geothermal fairways were identified. Control for this study was based on wells chosen so as to provide stratigraphic dip sections spaced 15 to 20 miles apart along the entire Texas Gulf Coast.

D. G. Bebout; V. J. Gavenda; A. R. Gregory

1978-01-01

215

Gravitational instability in a coasting universe  

Microsoft Academic Search

The paper describes a theory of gravity consistent with the inverse square law of Newtonian gravity behind a universe expanding with zero acceleration (i.e., 'coasting') and examines its consequences for gravitational instability. It is found that such a universe is highly unstable to the formation of local condensations and voids. An expanding universe consistent with the inverse square law and

D. S. Lemons; W. Peter

1992-01-01

216

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.  

ERIC Educational Resources Information Center

|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. The research techniques used included questionnaires and feedback sheets on demographics, the…

Benveniste, Annie

217

United States Coast Pilot 4. Atlantic Coast, Cape Henry to Key West. Fifteenth Edition.  

National Technical Information Service (NTIS)

The National Ocean Survey Coast Pilots cover a wide variety of information important to navigators of United States coastal and intracoastal waters. Most of this book information cannot be shown graphically on the standard nautical charts and is not readi...

1977-01-01

218

77 FR 55153 - Magnuson-Stevens Act Provisions; Fisheries Off West Coast States; Pacific Coast Groundfish...  

Federal Register 2010, 2011, 2012, 2013

...Pacific Coast Groundfish Fishery; Correction AGENCY: National Marine Fisheries Service...rule includes but is not limited to corrections to coordinates defining depth countours...CV endorsement, and others. Each correction is explained below. DATES:...

2012-09-07

219

76 FR 67092 - Magnuson-Stevens Act Provisions; Fisheries Off West Coast States; Pacific Coast Groundfish...  

Federal Register 2010, 2011, 2012, 2013

...Biennial Specifications and Management Measures; Inseason Adjustments AGENCY: National...adjustments to biennial groundfish management measures; request for comments...announces inseason changes to management measures in the commercial Pacific Coast...

2011-10-31

220

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

Code of Federal Regulations, 2013 CFR

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

2013-07-01

221

Abandoned oil fields of Texas Gulf Coast  

SciTech Connect

One nonconventional oil target in Texas is the oil that remains in abandoned fields, defined as those fields that had no oil or gas production in 1977 and 1982. This target includes oil that has not been tapped by conventional field development because of reservoir heterogeneity and oil in reservoirs that have not been subjected to any secondary or tertiary recovery efforts. A total of 138 abandoned oil fields having individual cumulative production greater than 500,000 bbl are located in the Texas Gulf Coast (railroad Commission of Texas Districts 2, 3, and 4). These 138 onshore fields produced 276 million barrels of oil before being abandoned. Nongiant fields in the Texas Gulf Coast average about 40% ultimate recovery, so these fields probably originally contained about 700 million bbl of oil in place. Therefore, about 424 million bbl of oil remain unrecovered. Reservoirs in these abandoned fields are Tertiary sandstones. The 44 abandoned fields in the upper Texas Gulf Coast (District 3) produced from a wide range of plays; those plays with the largest number of abandoned fields are Yegua and Frio deep-seated domes, Eocene deltaic sandstone, and Frio barrier/strand-plain sandstone. The 19 abandoned fields in the middle Texas Gulf Coast (District 2) produced mainly from Wilcox and Frio fluvial/deltaic sandstones and from Frio and Jackson-Yegua barrier/strand-plain sandstones. The lower Texas Gulf Coast (District 4) contains 75 abandoned fields that produced from Frio fluvial/deltaic and barrier/strand-plain sandstones and from Jackson-Yegua barrier/strand-plain sandstones.

Dutton, S.P.

1984-04-01

222

33 CFR 23.10 - Coast Guard emblem.  

Code of Federal Regulations, 2010 CFR

...2009-07-01 2009-07-01 false Coast Guard emblem. 23.10 Section 23.10 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY GENERAL DISTINCTIVE MARKINGS FOR COAST GUARD VESSELS AND AIRCRAFT § 23.10...

2009-07-01

223

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

224

Coast-down time measuring system based on photoelectric method  

NASA Astrophysics Data System (ADS)

Coast-down time measuring system can measure the time when speed values of Chassis Dynamometers for Automobile Emissions Testing change from initial velocity to end velocity under different load in a given speed range. This coast-down time will represent characters of Chassis Dynamometers for Automobile Emissions Testing such as Dynamometer inertia weight, constant load coast-down time, variable load coast-down time, Chassis Dynamometers for Automobile Emissions Testing can be calibrated by comparing these coast-down time with theoretical values. Working principle of coast-down time measuring system is a photoelectric sampler of coast-down time measuring system collects speed values information of Chassis Dynamometers for Automobile Emissions Testing. Then, determine speed values through calculation. When the velocity is equal to initial velocity Vb value, measuring system starts a timer. When speed reaches end velocity Ve value, measuring system stops the timer. So time interval is coast-down time from Vb to Ve. It is obvious that accuracy of coast-down time measurement lies on whether start and end velocity can be judged accurately and determined quickly, whether accuracy of timing can be admitted, and lies on how long these can be done. Coast-down time measuring system with photoelectric sampler proposed in this paper involves all the above factors, as well as improves measurement accuracy of coast-down time.

Zhu, Wei-Min; Wang, Da-Yong; Qi, Fang

2010-05-01

225

Coasting after overpressure induction with sevoflurane  

Microsoft Academic Search

Study Objective: To evaluate the clinical feasibility of using a coasting technique to temporarily maintain anesthesia after overpressure induction with sevoflurane.Study Design: Prospective clinical study.Setting: Large teaching hospital.Patients: 12 ASA physical status I, II, and III patients receiving general anesthesia for a variety of peripheral procedures.Interventions: After overpressure induction of anesthesia with sevoflurane (8%) in an O2\\/N2O mixture, the fresh

Jan F. A Hendrickx; Dirk M Vandeput; Axel M De Geyndt; Thierry DeLoof; Andre M De Wolf

2000-01-01

226

Currents along the pacific coast of Canada  

Microsoft Academic Search

A series of oceanographic studies along the west coast of British Columbia in 1979–1982 produced several realizations of the seasonal cycle of currents. At one site, occupied for 3–1\\/4 years, the monthly mean currents are stable in speed and direction indicating that a single year of data reliably describes the pattern.Based upon three sets of observations at 15?m depth (summer

H. J. Freeland; W. R. Crawford; R. E. Thomson

1984-01-01

227

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

228

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

229

Clinical and radiological outcomes of the Ivory arthroplasty for trapeziometacarpal joint osteoarthritis with a minimum of 5 years of follow-up: a prospective single-centre cohort study.  

PubMed

We present the results of a 5 year prospective follow-up study on the functional outcome after total replacement of the trapeziometacarpal joint with the Ivory prosthesis (Memometal, Stryker Corporate, Kalamazoo, Michigan, USA) in 22 patients. The female to male ratio was 21:1 and the mean age was 66 (range 54-78) years. The mean follow-up period was 67 (range 60-77) months after operation. Patient satisfaction was high. The mobility of the operated thumb was restored to a range of motion comparable to the contralateral thumb. Key pinch and grip strength improved by 13% and 31%, respectively. Overall function, according to Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH) score, improved by 59%. Pain decreased by 85% according to the numerical rating scale. Radiological evaluation revealed no loosening of the implant after 5 years except in one patient who required revision due to polythene wear with secondary joint instability. Another patient had asymptomatic polythene wear that required no revision but remains in follow-up. The 5 year overall survival of the prosthesis was 95%. These medium-term results suggest that the Ivory arthroplasty is a reliable option for treating advanced trapeziometacarpal arthritis, because it appears to give a very good functional outcome and has the potential for long-term survival rates. PMID:23677958

Goubau, J F; Goorens, C K; Van Hoonacker, P; Berghs, B; Kerckhove, D; Scheerlinck, T

2013-05-14

230

[Tectonic survey of the Central Pacific coast of Costa Rica ].  

PubMed

Three fossil coral samples (Pocillopora elegans and Pocillopora damicornis) were collected from a beachrock in Puerto Escondido, central Pacific coast of Costa Rica. The age of the samples ranged from 1272+/-60 to 2010+/-60 years BP. They represent some of the few Holocene fossil corals known from the Pacific coast of the Americas. The uplift rate for the central Pacific coast of Costa Rica was calculated in 0.4 to 2.1 mm year(-1). PMID:15264532

Denyer, P; Cortés, J

2001-12-01

231

Health hazards due to pollution of waters along the coast of Visakhapatnam, east coast of India  

Microsoft Academic Search

Environmental pollution that renders waters along the coastline and beaches unsatisfactory for use by the general public has become a global health problem. This study was conducted to examine the effects of pollution of beach waters and sediment at seven selected locations receiving land drainage along a 45-km stretch of the east coast near Visakhapatnam, India. Pathogenic bacteria were identified

April Clark; Torrey Turner; K. Padma Dorothy; J. Goutham; C. Kalavati; Bettaiya Rajanna

2003-01-01

232

Heavy Metal Pollution in Reef Corals of Tuticorin Coast, Southeast Coast of India  

Microsoft Academic Search

This work investigates the metal pollution documented in the skeletons of selected coral species like Acropora formosa, Montipora digitata and Porites andrewsi from the Tuticorin Coast, one of the least studied areas in the Bay of Bengal. Relating heavy metal concentrations to morphological features of skeletons, highest concentrations of all the metals (except Cu and Zn) were found in ramose

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

2009-01-01

233

Gulf Coast-East Coast magnetic anomaly I: Root of the main crustal decollement for the Appalachian-Ouachita orogen  

Microsoft Academic Search

The Gulf Coast-East Coast magnetic anomaly extends for at least 4000 km from south-central Texas to offshore Newfoundland as one of the longest continuous tectonic features in North America and a major crustal element of the entire North Atlantic-Gulf Coast region. Analysis of 28 profiles spaced at 100km intervals and four computed models demonstrate that the anomaly may be explained

David J. Hall

1990-01-01

234

Gulf Coast-East Coast magnetic anomaly I: Root of the main, crustal decollement for the Appalachian-Ouachita orogen  

Microsoft Academic Search

The Gulf Coast-East Coast magnetic anomaly extends for at least 4000 km from south-central Texas to offshore Newfoundland as one of the longest continuous tectonic features in North America and a major crustal element of the entire North Atlantic-Gulf Coast region. Analysis of 28 profiles spaced at 100 km intervals and four computed models demonstrate that the anomaly may be

David J. Hall

1990-01-01

235

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

...2013-07-01 2013-07-01 false Vieques Passage and Atlantic Ocean, off east coast of Puerto Rico and coast of Vieques Island...AREA REGULATIONS § 334.1480 Vieques Passage and Atlantic Ocean, off east coast of Puerto Rico and coast of Vieques...

2013-07-01

236

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

237

Comparison of two wave models for Gold Coast, Australia  

Microsoft Academic Search

STRAUSS, D., MIRFERENDESK, H. and TOMLINSON, R., 2007. Comparison of two wave models for Gold Coast, Australia. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 312 - 316. Gold Coast, Australia, ISBN 0749.0208 Managing hazards associated with shoreline responses to extreme events and the provision of safe boating access is an ongoing concern for coastal

D. Strauss; R. Tomlinson

2007-01-01

238

Overgrazing of Kelp Beds Along the Coast of Norway  

Microsoft Academic Search

The aim of this study was to better understand the down-grazing of kelp beds by sea urchins (Strongylocentrotus droebachiensis) along the coast of Norway. Barren grounds were first observed in sheltered areas along the coast of the counties of Trø ndelag, Nordland and Troms in 1974. In the 1980s, the barren grounds spread to areas more heavily exposed to waves.

Knut Sivertsen

2006-01-01

239

Assessing catchment-coast interactions for the Bay of Gdansk  

Microsoft Academic Search

While eutrophication creates impacts on coastal ecosystems and can result in negative impacts on coastal ecosystem services, its source is often located far away from the coast, related to nutrient emissions from river catchments. Within the EU funded EUROCAT project a chain of tools and models were applied to assess these catchment-coast interactions. Aim of the project is to support

Andreas Kannen; Jan Jedrasik; Marek Kowalewski; Bogdan Oldakowski; Jacek Nowacki

240

50 CFR 660.518 - Pacific Coast Treaty Indian Rights.  

Code of Federal Regulations, 2011 CFR

... Pacific Coast Treaty Indian Rights. (a) Pacific Coast treaty Indian tribes have treaty rights to harvest CPS in their usual...accustomed fishing areas in U.S. waters. (b) For the purposes of this... (d) Procedures. The rights referred to in...

2011-10-01

241

Designing object-oriented synchronous groupware with COAST  

Microsoft Academic Search

This paper introduces COAST, an object-oriented toolkit for the development of synchronous groupware, which enhances the usability and simplifies the development of such applications. COAST offers basic and generic components for the design of synchronous groupware and is complemented by a methodology for groupware development. Basic features of the toolkit include transaction-controlled access to replicated shared objects, transparent replication management,

Christian Schuckmann; Lutz Kirchneri; Jan Schümmer; Jörg M. Haake

1996-01-01

242

Recirculation of polluted air masses over the East Mediterranean coast  

Microsoft Academic Search

An air quality observatory was operated at a rural site on the Mediterranean coast of Israel near the ancient city of Caesarea between May 1993 and October 1995. The objective of the study was to monitor transport of air pollutants from remote sources that arrive at the Israeli coast. Normally, under onshore westerly winds, which come from the Mediterranean sea,

D. Alper-Siman Tov; M. Peleg; V. Matveev; Y. Mahrer; I. Seter; M. Luria

1997-01-01

243

Coast Guard's response to spilled oil. [Detectors, sensors, recovery systems  

Microsoft Academic Search

The Coast Guard's responsibilities for oil spill control within and outside the territorial limits of the United States are defined. An extensive remote sensing program, using in-situ and airborne sensors, of the Coast Guard's Office of R and D detects oil spills. Five types of each in-situ and airborne sensors are described. After a spill has been detected, the next

R. W. Jr

1976-01-01

244

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

245

Rock coasts, with particular emphasis on shore platforms  

Microsoft Academic Search

Rock coasts are one of the most common elements of the world's littoral zone, and they are often important sources of sediment for estuaries and beaches. Economic development, growing populations, and the potential effects of rising sea level provide a practical need to understand the dynamics of these coasts. Although there have been significant advances in our understanding of rocky

Alan S. Trenhaile

2002-01-01

246

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

247

Roots and Branches: Contemporary Essays by West Coast Writers.  

ERIC Educational Resources Information Center

|Celebrating the vitality and diversity of West Coast writing, this book is a collection of 35 essays by writers based in California, Oregon, Washington, and Alaska. Loosely organized around the ideas that West Coast writers often look to their roots elsewhere and that they pursue new directions as varied as their roots, the collection presents a…

Junker, Howard, Ed.

248

46 CFR 4.40-25 - Coast Guard marine casualty investigation for the Board.  

Code of Federal Regulations, 2012 CFR

...Coast Guard marine casualty investigation for the Board. 4.40-25...PUBLIC MARINE CASUALTIES AND INVESTIGATIONS Coast Guard-National Transportation...Safety Board Marine Casualty Investigations § 4.40-25 Coast...

2012-10-01

249

46 CFR 4.40-25 - Coast Guard marine casualty investigation for the Board.  

Code of Federal Regulations, 2011 CFR

...Coast Guard marine casualty investigation for the Board. 4.40-25...PUBLIC MARINE CASUALTIES AND INVESTIGATIONS Coast Guard-National Transportation...Safety Board Marine Casualty Investigations § 4.40-25 Coast...

2011-10-01

250

77 FR 74372 - 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...action, EPA is finalizing approval of South Coast Air Quality Management District...owed by all section 185 sources in the South Coast Air Basin.\\1\\ Rather than...

2012-12-14

251

40 CFR 81.166 - South Central Coast Intrastate Air Quality Control Region.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false South Central Coast Intrastate Air Quality Control...Quality Control Regions § 81.166 South Central Coast Intrastate Air Quality Control Region. The South Central Coast Intrastate Air...

2013-07-01

252

33 CFR 165.1339 - Safety Zone; Coast Guard Exercise Area, Hood Canal, Washington.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Safety Zone; Coast Guard Exercise Area, Hood Canal, Washington. 165...165.1339 Safety Zone; Coast Guard Exercise Area, Hood Canal, Washington. ...is involved in a Coast Guard training exercise while such vessel is transiting...

2013-07-01

253

46 CFR 159.005-7 - Preapproval review: Coast Guard action.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Preapproval review: Coast Guard action. 159.005-7 Section 159.005-7 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED...005-7 Preapproval review: Coast Guard action. (a) If approval...

2012-10-01

254

46 CFR 9.1 - Extra compensation; Coast Guard civilian personnel.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Extra compensation; Coast Guard civilian personnel. 9.1 Section 9.1 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES... § 9.1 Extra compensation; Coast Guard civilian personnel....

2012-10-01

255

Comparison of Somatic Reversions between the Ivory Allele and Transposon-Caused Mutant Alleles at the White Locus of DROSOPHILA MELANOGASTER after Larval Treatment with X Rays and Ethyl Methanesulfonate  

PubMed Central

Somatic reversion of strains with the ivory (wi) allele, a mutation associated with a tandem duplication of a DNA sequence at the white locus, increased with the age of larvae at the time of X-irradiation as expected from the increase in the number of target cells. In contrast, two independently isolated strains with unstable w+ loci associated with insertion of transposable elements showed higher reversion frequencies after treatment with X rays or ethyl methanesulfonate (EMS) at early larval stages than at late stages. Nevertheless, both the w i strain and the two unstable w+ strains reverted at nearly equal rates after treatment with X rays or EMS at early larval stages. Possible similarity in "hot spot" structure for the high reversibility of the two types of mutations is discussed in relation to production of presumed "mutator-type" cofactors specific to the transposon-caused mutations at early larval stages.

Ryo, Haruko; Yoo, Mi Ae; Fujikawa, Kazuo; Kondo, Sohei

1985-01-01

256

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

257

Gulf Coast geopressure: old questions, new answers  

SciTech Connect

A significant body of production and test data from the Gulf Coast geopressured zones indicates that these deep sediments contain some reservoir quality sandstones capable of extended production of moderately hot brine saturated with dissolved natural gas. The best of the test wells to date, the DOE Pleasant Bayou No. 2 in Brazoria County, Texas, flowed at a sustained rate of about 18,000 bb1/day for approximately seven months. The reservoir may cover an area as large as 58 sq. miles. None of the remaining eleven wells tested equaled the performance of the Pleasant Bayou test. From an economic standpoint, dissolved methane shows little promise of competitive performance in the foreseeable future. As a geothermal energy source, the temperatures are disappointingly low. The resource overall appears to be large, though diffuse.

Swanson, R.K.; Bernard, W.J.; Osoba, J.S.

1984-09-01

258

Methylmercury in hair fisherman for Turkish coasts  

SciTech Connect

Environmental methylmercury mainly arises from the methylation of inorganic mercury. The change in speciation of mercury from inorganic to methylated forms is the first step in the aquatic bioaccumulation processes. The bioconcentration factor of methylmercury in fish tissue to that in water is usually between 10{sup 4} and 10{sup 5}. Among seafood, fish products are the main source of methylmercury absorbed by men from the environment. Since Minimata epidemic health injuries and deaths in relation to mercury pollution, environmental and biological monitoring of inorganic and organic mercury species has gained importance through out the world and many reports have been published on the health effects and biological monitoring of mercury compounds including some Mediterranean countries. This study focuses on methylmercury in hair of fisherman living in different geographical Turkish coasts and relationship to eating fish habit. 17 refs., 1 fig., 2 tabs.

Vural, N. [Ankara Univ. (Turkey); Uenlue, H. [Posion Information Centre, Ankara (Turkey)

1996-10-01

259

Main Coast Winds - Final Scientific Report  

SciTech Connect

The Maine Coast Wind Project was developed to investigate the cost-effectiveness of small, distributed wind systems on coastal sites in Maine. The restructuring of Maine's electric grid to support net metering allowed for the installation of small wind installations across the state (up to 100kW). The study performed adds insight to the difficulties of developing cost-effective distributed systems in coastal environments. The technical hurdles encountered with the chosen wind turbine, combined with the lower than expected wind speeds, did not provide a cost-effective return to make a distributed wind program economically feasible. While the turbine was accepted within the community, the low availability has been a negative.

Jason Huckaby; Harley Lee

2006-03-15

260

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

261

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

262

Use of Grasses for Dune Stabilization Along the Gulf Coast with Initial Emphasis on the Texas Coast.  

National Technical Information Service (NTIS)

The Texas Gulf Coast is the area receiving initial protective measures because it is the most vulnerable of the 1622 miles of coast of the Gulf of Mexico. Barrier islands provide significant protection from storm surge and hurricane-generated waves, but v...

B. E. Dahl D. E. Feray D. W. Woodard R. L. Baker

1970-01-01

263

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

264

Caring in the Ivory Tower  

ERIC Educational Resources Information Center

|In this paper I argue that the teacher educators who deliberately create and nurture caring teacher-student relationships, despite the many challenges, benefit both themselves and their students in several ways. Although the notion that teachers should care for their students is not new, it may well be that professors too seldom "communicate"…

O'Brien, Leigh M.

2010-01-01

265

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

266

Opening up the Ivory Tower.  

PubMed

Big pharma is increasingly looking to academia for new drug leads and technologies; meanwhile universities are being forced to look beyond the National Institutes of Health (NIH) for funding. This mutual attraction-out-of-necessity is helping to forge new bonds between industry and academia. PMID:17540161

Wilan, Ken Howard

2007-06-01

267

Statistics of rocky coast erosion and percolation theory  

NASA Astrophysics Data System (ADS)

The dynamics of rocky coasts is an erratic phenomenon featuring numerous small erosion events, but sometimes large dramatic collapses. In this sense, its study should not limit or rely on average erosion rates. Recent studies, based on historical as well as recent data, have indicated that the frequency of magnitude of erosion events display long tail distribution, similar to what observed in landslide. In other words the time evolution of a coast morphology does not enter the classical category of Gaussian process, but rather that of critical systems in physics. We recently proposed a minimal dynamical model of rocky coast erosion which is able to reproduce the diversity of rocky coast morphologies and their dynamics. This model is based on a single, simple ingredient, the retroaction of the coast morphology on the erosive power of the sea. It follows from the idea that erosion can spontaneously create irregular seashores, but, in turn, the geometrical irregularity of the coast participates to the damping of sea-waves, decreasing the average wave amplitude and erosive power. The resulting mutual self-stabilization dynamics of the sea erosion power and coastal irregular morphology leads spontaneously the system to a critical dynamics. Our results indicate then that rocky coast erosion and the statistical theory of percolation are closely related. In this framework, the sometimes fractal geometry of coastlines can be recovered and understood in terms of fractal dimension of the external perimeter of a percolation cluster. From a more practical point of view, the analogy with percolation interfaces means that the coast constitutes a strong, but possibly fragile, barrier to sea erosion, emerging from a self-organised selection process. Accordingly, the effect of a slow weathering degradation of the rocks mechanical properties, as well as other perturbations from natural or human cause, can trigger random and large erosion events difficult to predict and control. To the extent that these ideas apply, natural coasts should be "preserved" and managed with care.

Baldassarri, A.; Sapoval, B.

2012-04-01

268

US west coast revisited: An aeromagnetic perspective  

SciTech Connect

A new compilation of magnetic data for the western conterminous United States and offshore areas provides significant information about crustal units and structures in the region. Features shown on the compilation include a magnetic quiet zone along the coast and two lineaments inland. The magnetic quiet zone correlates with the accretionary prism at the western edge of the North American plate and overlies subducted ocean crust; abrupt termination of ocean-floor magnetic anomalies at, or a short distance east of, the toe of the accretionary prism is an inferred effect subduction-induced low-temperature metamorphism of the ocean crust. The Puget Lowlands-San Joaquin lineament is an alignment of high-intensity magnetic anomalies that in the south, and possibly also in the north, are cause by bodies of mafic-ultramafic rocks accreted to North America during the Mesozoic and Tertiary. The lineup of the highs and the inferred lineup of the causative bodies may reflect fundamental structures that control Mesozoic and Tertiary evolution of the continental margin. The Mojave Desert lineament, a distinctive chain of short-wavelength magnetic anomalies in southern California, coincides partly with a zone of Mesozoic intrusions and the Cenozoic San Andreas fault system, but is likely to be older than both in origin and may reflect a Mesozoic or older crustal discontinuity.

Zietz, I.; Johnson, P.R. (George Mason Univ., Fairfax, VA (USA)); Bond, K.R. (Geological Survey, Reston, VA (USA))

1990-04-01

269

Collateral Duty Job Satisfaction Among Coast Guard Aviators.  

National Technical Information Service (NTIS)

This research sought to determine if collateral duty job satisfaction is related to a Coast Guard aviator's career satisfaction and retention plans, which are the most and least satisfying collateral duties, and if various job, management, and individual ...

R. J. Morrison

1991-01-01

270

Laboratory Hatching and Rearing of Pacific Coast Clams and Oysters.  

National Technical Information Service (NTIS)

The main objective of this report was to develop spawning and setting techniques for Pacific Coast molluscs. The following molluscs were successfully spawned and reared to metamorphosis: Razor clams, butter clams, gaper clams, cockle clams, native oysters...

F. D. Phibbs

1970-01-01

271

78 FR 61844 - North Atlantic Coast Comprehensive Study  

Federal Register 2010, 2011, 2012, 2013

...of the North Atlantic Coast Comprehensive Study (Hurricane Sandy). The USACE is preparing a report that will be submitted...Congressional response to the devastation in the wake of Hurricane Sandy included a mandate to address as a regional...

2013-10-04

272

Polyhalogenated Monoterpenes from 'Plocamium cartilagineum' from the British Coast.  

National Technical Information Service (NTIS)

Plocamium cartilagineum collected at several locations along the British coast contained polyhalogenated monocyclic monoterpenes, five of which have been fully characterized. The halogenated monoterpenes from the British samples are closely related to tho...

M. D. Higgs D. J. Vanderah D. J. Faulkner

1977-01-01

273

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 ...

274

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. An; evaluation was conducted on four different cleane...

275

Coast Guard's Boat Crew Communications System Is Unreliable.  

National Technical Information Service (NTIS)

This report addresses the effectiveness of the Coast Guard's boat crew communications system to support maritime operations. We conducted this work as part of our audit to determine whether the current Maritime Safety and Security Team (MSST) program and ...

2010-01-01

276

Individual Papers from Proceedings of coast redwood forests in a ...  

Treesearch

The impact of timber harvest using an individual tree selection silvicultural system ... Summer water use by mixed-age and young forest stands, Mattole River, northern ... in naturally recovering coast redwood (Sequoia sempervirens) forests .

277

Individual Papers from Proceedings of coast redwood forests in a ...  

Treesearch

Jan 12, 2010 ... Sediment yield response to sediment reduction strategies implemented for 10 years in watersheds managed for ... Diller, Lowell; Hamm, Keith; Lamphear, David; McDonald, Trent. ... California's coast redwood in New Zealand.

278

Preliminary meteorological results for 1992 West Coast Scotland Experiment.  

National Technical Information Service (NTIS)

This memo documents preliminary meteorological results from the 1992 West Coast Scotland Experiment, a joint US/UK radar ocean imaging experiment. Measurements of wind speed and direction are reported for both phases of the experiment covering the periods...

H. F. Robey

1993-01-01

279

Coast Community College: The Learning Society, California Style  

ERIC Educational Resources Information Center

|Community colleges in the California Coast Community College district have capitalized on a burgeoning adult education clientele and the public television boom to acquire one of the fasting growing and most venturesome education systems in the world. (Author/LBH)|

Real, James

1978-01-01

280

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

281

Aquatic Survey of the Kona Coast Ponds, Hawaii Island.  

National Technical Information Service (NTIS)

During a 17-month period beginning July 1972, 318 shoreline ponds were located and surveyed in the five land districts of Hawaii Island's leeward coast. The survey concerned an inventory of environmental and biological characteristics for the purpose of a...

J. A. Maciolek R. E. Brock

1974-01-01

282

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...

283

REAR AND SIDE OF PACIFIC COAST GARRISON MONUMENT, SECTION ES ...  

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

REAR AND SIDE OF PACIFIC COAST GARRISON MONUMENT, SECTION ES (EAST SIDE), WITH ADMINISTRATION BUILDING AT RIGHT IN BACKGROUND. VIEW TO NORTH. - San Francisco National Cemetery, 1 Lincoln Boulevard, San Francisco, San Francisco County, CA

284

INTERIOR LIBRARY, LOOKING NORTHWEST. Oregon Inlet Coast Guard Station, ...  

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

INTERIOR LIBRARY, LOOKING NORTHWEST. - 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

285

INTERIOR TOWER ROOM LOOKING NORTHEAST. Oregon Inlet Coast Guard ...  

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

INTERIOR TOWER 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

286

Probing the Extrasolar Planet Diversity with SEE-COAST  

NASA Astrophysics Data System (ADS)

SEE-COAST is a space mission concept designed for the study of physical and chemical characteristics of exoplanets. The science driver of SEE-COAST is the exploration of the planetary diversity, which has been unveiled in the past 15 years. Both spectral and polarimetric properties of the parent starlight reflected by the planets are analyzed to better constraint the atmosphere of planets. The SEE-COAST concept relies on a series of high contrast imaging techniques like coronagraphy, differential imaging and possibly wavefront control. The science objectives as well as the wavelength range (0.4-1.25 microns) are complementary to the future near-infrared ground-based coronagraphic instruments and to the exoplanet imaging capability of the JWST. We propose SEE-COAST as a relatively secure step to prepare the more ambitious characterization mission of Earth-like planets. The strategy of the mission is presented and the instrumental concept is briefly introduced.

Baudoz, P.; Boccaletti, A.; Schneider, J.; Galicher, R.; Tinetti, G.

2010-10-01

287

33 CFR 1.20-1 - Testimony by Coast Guard personnel and production of records.  

Code of Federal Regulations, 2010 CFR

...by Coast Guard Personnel and Production of Records in Legal Proceedings...Coast Guard personnel and production of records. (a) The...of Coast Guard personnel, production of Coast Guard records...Officer of each Maintenance and Logistics Command, each District...

2009-07-01

288

33 CFR 1.20-1 - Testimony by Coast Guard personnel and production of records.  

Code of Federal Regulations, 2013 CFR

...by Coast Guard Personnel and Production of Records in Legal Proceedings...Coast Guard personnel and production of records. (a) The...of Coast Guard personnel, production of Coast Guard records...Officer of each Maintenance and Logistics Command, each District...

2013-07-01

289

33 CFR 1.20-1 - Testimony by Coast Guard personnel and production of records.  

Code of Federal Regulations, 2010 CFR

...by Coast Guard Personnel and Production of Records in Legal Proceedings...Coast Guard personnel and production of records. (a) The...of Coast Guard personnel, production of Coast Guard records...Officer of each Maintenance and Logistics Command, each District...

2010-07-01

290

The Conflicts Between Tourist & Industrial Activities Along The Suez Gulf N-West Coast  

Microsoft Academic Search

Tourism development along Coast is mainly dependent on the natural environment as resource base. Coasts are endowed with special beauty, abundance of natural Resources and rich heritage. Suez Gulf west coast is one of the coasts that have special economic importance. It provides potential for establishing multiple activities: industry, harbor and tourism. According to the economic situation and the major

Ghada Farouk Hassan

291

60. Photocopy of Upper Deck Extension, White Heath. U.S. Coast ...  

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

60. Photocopy of Upper Deck Extension, White Heath. U.S. Coast Guard Yard, Industrial Department, Curtis Bay, Maryland. Coast Guard Headquarters Drawing No. 540-WAGL-1106-7, dated February 1948. Original drawing property of the U.S. Coast Guard. - U.S. Coast Guard Cutter WHITE HEATH, USGS Integrated Support Command Boston, 427 Commercial Street, Boston, Suffolk County, MA

292

BURST-ANC-COAST SWIMMING IN SCHOOLING FISH  

Microsoft Academic Search

The burst-and-coast behavior and tail beat frequency were analysed to determine if an energetic saving was realized for fish when swimming in formation. 2. Individual Notemigonus crysofeucas were compared as they swam singly or in a school of five at 0.15 m\\/sec in a flow tank. 3. No significant difference was found in time intervals of bursting and coasting between

FRANK E. FISH; JENNIFER F. FEGELY; CINDY J. XANTHOPOULOS

1991-01-01

293

Booklist for Educators: Native Americans of the Northwest Coast  

NSDL National Science Digital Library

This booklist for educators has seven books that are recommended for learning more about Native Americans of the Northwest Coast. A short description is given for each title, along with author name and publisher. The list includes illustrated looks at design motifs and artistic styles, profiles of artists working in a variety of media, guides to myths and legends, including examinations of cosmology portraits and interviews with Northwest Coast chiefs and elders.

294

Ethnobotany of caiçaras of the Atlantic Forest coast (Brazil)  

Microsoft Academic Search

Caiçaras are inhabitants of the Atlantic Forest coast in SE Brazil. We studied the uses of plants by five Caiçara communities\\u000a and compared medicinal plant citations by informants in coastal and island communities. We use diversity indices to evaluate\\u000a the use of plants and to compare communities. There is a high diversity of plants used in the Atlantic Forest coasts:

Silvia C. Rossato; HermóGenes F. De LeitãO-Filho; Alpina Begossi

1999-01-01

295

Overgrazing of kelp beds along the coast of Norway  

Microsoft Academic Search

The aim of this study was to better understand the down-grazing of kelp beds by sea urchins (Strongylocentrotus droebachiensis) along the coast of Norway. Barren grounds were first observed in sheltered areas along the coast of the counties of Trøndelag,\\u000a Nordland and Troms in 1974. In the 1980s, the barren grounds spread to areas more heavily exposed to waves. In

Knut Sivertsen

296

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

297

Existing and potential NGL (natural gas liquids) import terminals, U. S. East Coast and Gulf Coast harbors  

Microsoft Academic Search

A survey covers existing and proposed gulf and east coast terminals; available storage capacities in the gulf and the east coasts; traffic volume as reported to the U.S. Department of Energy for 12 mo ending Nov. 1977 vs. that reported in the U.S. Department of Commerce ''Waterborne Commerce U.S.A. for 1975 and 1976''; rock characteristics of available space for new

1978-01-01

298

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

299

Le point sur les fistules urogénitales en Côte d’Ivoire à la fin du XX e siècle. Résultats de 70 cas  

Microsoft Academic Search

The urogenital fistulas (UGF), mostly in Africa and particularly in Ivory Coast, still represent a great flail nowadays.However, the authors notice, through a study of 70 cases done in Ivory Coast over (ten) 10 years, that a relative decrease of the impact of the urogenital fistulas troubles still remains a serious affection of young women who can give birth.They are

H. A Dekou; P. G Konan; K Manzan; G. A Ouegnin; A Djedje-Mady; C Yao Dje

2002-01-01

300

Engineering geomorphology on the coast: lessons from west Dorset  

NASA Astrophysics Data System (ADS)

The central aim of this paper is to describe the general context in which an applied geomorphological investigation for a management project on a Heritage coast will be set. We attempt to show how the decisions may be affected by historical legacies and public or administrative attitudes. Modern attitudes to the coast in Great Britain are summarized in the light of recent studies by the Department of the Environment and the Ministry of Agriculture, Fisheries and Food. The Dorset coast in southwest England is used to illustrate the main points. The paper describes the coastal features, explains the historical legacy of use, and examines problems of contemporary coastal management. The paper concludes with a consideration of the natural geomorphological principles of landscape design which might be employed as part of the guiding concepts.

Brunsden, Denys; Moore, Roger

1999-12-01

301

Identification of geopressured occurrences outside of the Gulf Coast  

SciTech Connect

Methane dissolved in saline formation waters under abnormally high pressure (geopressure) is one of several unconventional gas sources that is under intensive investigation by the Department of Energy. The most well-known and studied region of geopressures in the US is the Gulf Coast geosyncline. Recent studies, however, indicate that this phenomenon is displayed in many other sedimentary basins encompassing lithologies and sedimentary environments unlike those of the Gulf Coast. These include various Rocky Mountain and Mid-Continent basins, onshore and offshore Californian, Alaskan and Pacific Coast basins, and other isolated occurrences. Of this group, two prime target areas, based on the indicated methane content of geopressured formation waters, would include the Cambrian sands of the Rome trough in West Virginia and selected Miocene sediments along the west side of the San Joaquin Valley in California.

Strongin, O.

1981-01-01

302

Gulf Coast Association of Geological Societies: Transactions. Volume 44  

SciTech Connect

This document describes the transactions of the 44th Annual Convention of the Gulf Coast Association of Geological Societies, the American Association of Petroleum Geologists Regional Meeting, and the Forty-First Annual Convention of the Gulf Coast Section of the Society of Economic Paleontologists and Mineralogists in Austin, Texas. This document describes the proceedings of the business meetings, presents award announcements, keynote addresses, and presents technical papers and abstracts. The technical papers and abstracts are about topics including petroleum geology, environmental geology, and resource management.

Major, R.P. [ed.

1994-12-31

303

Large California Tsunamis From Central Coast Historians And Central Coast Newspaper Records  

NASA Astrophysics Data System (ADS)

Approximately, 1996, Unocal historian Darwin Sainz mentioned the newly built Union Oil “Oilport” refinery in what is now Shell Beach (between Pismo & Avila Beaches and at 50 to 100 feet elevation) was destroyed by a tsunami in the early 1900’s. July 2009, George Plafker reported, “a bigger earthquake and a more destructive tsunami than the 1964 event are possible in the future”. The 1812 Santa Barbara Channel earthquake produced 5 tsunami waves approximately 50 feet in height to the front of the Santa Barbara Presidio based on a Franciscan Father’s journal. A book on “Shipwrecks, Smugglers, and Maritime Mysteries” by Wheeler & Kallman reports the largest wave was 48-50 feet estimated by the USGS west of Santa Barbara near Goleta. The “History of San Luis Obispo County, California” by Thompson & West (1883) reports 12 feet tsunamis occurred on August 13, 1868 (Peruvian earthquake) and April 16, 1877. On November 22, 1878, turbulent water in the absence of wind produced tsunamis that broke over the Morro Bay sand spit (current quad sheet high elevations 66 to 97 feet N to S), destroyed Avila & Pt. Sal piers, damaging Cayucos pier. A Japanese earthquake resulted in a tsunami at 12:40 PM December 9, 1907, near high tide and in already heavy seas, that stood out from the rest of the storm due to its’ enormous height. It wrecked the Ventura pier (12-13-1907, SLO Tribune) and the Oilport pier (12-13-1907, SLO Tribune & 12-6-1976 also 12-14-1907, Santa Maria Times & 12-10-1907 SLO Telegram) at Shell beach and destroyed the Oilport refinery (Darwin Sainz, personal communication). Before 7 AM on November 26, 1913, tsunamis wrecked the Monterey area including waves 10 to15 feet above the Del Monte wharf. At Seaside, “Immense domes of water and foam shot up above the general height” … “appearing from here to be higher than the highest sandhills along the shore.”(12-2-1913, SLO Tribune) Current quad sheet high elevations are 120 feet. These reports of historic tsunamis represent wave elevations significantly higher than the 1964 Alaska earthquake tsunami that is typically used for emergency planning for tsunami inundation in California. Since it appears 4 much larger tsunamis occurred in the Central Coast area in 1812, 1878, 1907 and 1913; it appears we may have become complacent during this recent period of tsunami quiescence. Emergency planning for Central Coast tsunamis should be anticipating tsunami waves in the 50 to 100 feet elevation range.

Blanck, E. L.

2009-12-01

304

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

Code of Federal Regulations, 2010 CFR

...description of the Pacific Coast hand-shucked oyster processing subcategory. 408.250...CATEGORY Pacific Coast Hand-Shucked Oyster Processing Subcategory § 408.250...description of the Pacific Coast hand-shucked oyster processing subcategory. The...

2009-07-01

305

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

Code of Federal Regulations, 2010 CFR

...description of the Pacific Coast hand-shucked oyster processing subcategory. 408.250...CATEGORY Pacific Coast Hand-Shucked Oyster Processing Subcategory § 408.250...description of the Pacific Coast hand-shucked oyster processing subcategory. The...

2010-07-01

306

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

Code of Federal Regulations, 2010 CFR

...Atlantic and Gulf Coast hand-shucked oyster processing subcategory. 408.260...Atlantic and Gulf Coast Hand-Shucked Oyster Processing Subcategory § 408.260...Atlantic and Gulf Coast hand-shucked oyster processing subcategory. The...

2009-07-01

307

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

Code of Federal Regulations, 2010 CFR

...Atlantic and Gulf Coast hand-shucked oyster processing subcategory. 408.260...Atlantic and Gulf Coast Hand-Shucked Oyster Processing Subcategory § 408.260...Atlantic and Gulf Coast hand-shucked oyster processing subcategory. The...

2010-07-01

308

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

Code of Federal Regulations, 2012 CFR

...Atlantic and Gulf Coast hand-shucked oyster processing subcategory. 408.260...Atlantic and Gulf Coast Hand-Shucked Oyster Processing Subcategory § 408.260...Atlantic and Gulf Coast hand-shucked oyster processing subcategory. The...

2012-07-01

309

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

Code of Federal Regulations, 2012 CFR

...description of the Pacific Coast hand-shucked oyster processing subcategory. 408.250...CATEGORY Pacific Coast Hand-Shucked Oyster Processing Subcategory § 408.250...description of the Pacific Coast hand-shucked oyster processing subcategory. The...

2012-07-01

310

76 FR 49666 - Safety Zone; East Coast Drag Boat Bucksport Blowout Boat Race, Waccamaw River, Bucksport, SC  

Federal Register 2010, 2011, 2012, 2013

...b) Definition. The term ``designated representative'' means Coast Guard Patrol Commanders, including Coast Guard coxswains, petty officers, and other officers operating Coast Guard vessels, and Federal, state, and local officers...

2011-08-11

311

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

312

76 FR 50128 - 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...

2011-08-12

313

46 CFR 4.40-30 - Procedures for Coast Guard investigation.  

Code of Federal Regulations, 2012 CFR

... Procedures for Coast Guard investigation. 4.40-30 Section 4...PUBLIC MARINE CASUALTIES AND INVESTIGATIONS Coast Guard-National Transportation...Safety Board Marine Casualty Investigations § 4.40-30...

2012-10-01

314

49 CFR 850.10 - Preliminary investigation by the Coast Guard.  

Code of Federal Regulations, 2011 CFR

... 2011-10-01 false Preliminary investigation by the Coast Guard. 850.10 Section...TRANSPORTATION SAFETY BOARD MARINE CASUALTY INVESTIGATIONS § 850.10 Preliminary investigation by the Coast Guard. (a) The...

2011-10-01

315

46 CFR 4.40-3 - Relationship to Coast Guard marine investigation regulations and procedures.  

Code of Federal Regulations, 2011 CFR

...Relationship to Coast Guard marine investigation regulations and procedures...PUBLIC MARINE CASUALTIES AND INVESTIGATIONS Coast Guard-National Transportation...Safety Board Marine Casualty Investigations § 4.40-3...

2011-10-01

316

46 CFR 4.40-10 - Preliminary investigation by the Coast Guard.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Preliminary investigation by the Coast Guard. 4...PUBLIC MARINE CASUALTIES AND INVESTIGATIONS Coast Guard-National Transportation...Safety Board Marine Casualty Investigations § 4.40-10...

2011-10-01

317

46 CFR 4.07-45 - Foreign units of Coast Guard, investigation by.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Foreign units of Coast Guard, investigation by. 4.07-45 Section 4.07-45 ...APPLICABLE TO THE PUBLIC MARINE CASUALTIES AND INVESTIGATIONS Investigations § 4.07-45 Foreign units of Coast...

2011-10-01

318

49 CFR 850.3 - Relationship to Coast Guard marine investigation regulations and procedures.  

Code of Federal Regulations, 2012 CFR

...Relationship to Coast Guard marine investigation regulations and procedures. 850...TRANSPORTATION SAFETY BOARD MARINE CASUALTY INVESTIGATIONS § 850.3 Relationship to Coast Guard marine investigation regulations and procedures....

2012-10-01

319

49 CFR 850.3 - Relationship to Coast Guard marine investigation regulations and procedures.  

Code of Federal Regulations, 2011 CFR

...Relationship to Coast Guard marine investigation regulations and procedures. 850...TRANSPORTATION SAFETY BOARD MARINE CASUALTY INVESTIGATIONS § 850.3 Relationship to Coast Guard marine investigation regulations and procedures....

2011-10-01

320

49 CFR 850.25 - Coast Guard marine casualty investigation for the Board.  

Code of Federal Regulations, 2011 CFR

...false Coast Guard marine casualty investigation for the Board. 850.25 Section...TRANSPORTATION SAFETY BOARD MARINE CASUALTY INVESTIGATIONS § 850.25 Coast Guard marine casualty investigation for the Board. (a) If the...

2011-10-01

321

46 CFR 4.40-30 - Procedures for Coast Guard investigation.  

Code of Federal Regulations, 2011 CFR

... Procedures for Coast Guard investigation. 4.40-30 Section 4...PUBLIC MARINE CASUALTIES AND INVESTIGATIONS Coast Guard-National Transportation...Safety Board Marine Casualty Investigations § 4.40-30...

2011-10-01

322

46 CFR 4.07-45 - Foreign units of Coast Guard, investigation by.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Foreign units of Coast Guard, investigation by. 4.07-45 Section 4.07-45 ...APPLICABLE TO THE PUBLIC MARINE CASUALTIES AND INVESTIGATIONS Investigations § 4.07-45 Foreign units of Coast...

2012-10-01

323

46 CFR 4.40-10 - Preliminary investigation by the Coast Guard.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Preliminary investigation by the Coast Guard. 4...PUBLIC MARINE CASUALTIES AND INVESTIGATIONS Coast Guard-National Transportation...Safety Board Marine Casualty Investigations § 4.40-10...

2012-10-01

324

49 CFR 850.25 - Coast Guard marine casualty investigation for the Board.  

Code of Federal Regulations, 2012 CFR

...false Coast Guard marine casualty investigation for the Board. 850.25 Section...TRANSPORTATION SAFETY BOARD MARINE CASUALTY INVESTIGATIONS § 850.25 Coast Guard marine casualty investigation for the Board. (a) If the...

2012-10-01

325

46 CFR 4.40-3 - Relationship to Coast Guard marine investigation regulations and procedures.  

Code of Federal Regulations, 2012 CFR

...Relationship to Coast Guard marine investigation regulations and procedures...PUBLIC MARINE CASUALTIES AND INVESTIGATIONS Coast Guard-National Transportation...Safety Board Marine Casualty Investigations § 4.40-3...

2012-10-01

326

49 CFR 850.10 - Preliminary investigation by the Coast Guard.  

Code of Federal Regulations, 2012 CFR

... 2012-10-01 false Preliminary investigation by the Coast Guard. 850.10 Section...TRANSPORTATION SAFETY BOARD MARINE CASUALTY INVESTIGATIONS § 850.10 Preliminary investigation by the Coast Guard. (a) The...

2012-10-01

327

46 CFR 9.1 - Extra compensation; Coast Guard civilian personnel.  

Code of Federal Regulations, 2010 CFR

... 2010-10-01 2010-10-01 false Extra compensation; Coast Guard civilian personnel...SECURITY PROCEDURES APPLICABLE TO THE PUBLIC EXTRA COMPENSATION FOR OVERTIME SERVICES § 9.1 Extra compensation; Coast Guard civilian...

2010-10-01

328

46 CFR 9.1 - Extra compensation; Coast Guard civilian personnel.  

Code of Federal Regulations, 2010 CFR

... 2009-10-01 2009-10-01 false Extra compensation; Coast Guard civilian personnel...SECURITY PROCEDURES APPLICABLE TO THE PUBLIC EXTRA COMPENSATION FOR OVERTIME SERVICES § 9.1 Extra compensation; Coast Guard civilian...

2009-10-01

329

33 CFR 165.506 - Safety Zones; Fifth Coast Guard District Fireworks Displays.  

Code of Federal Regulations, 2010 CFR

...3 feet above ground level when on land immediately adjacent...Coast Guard Sector North CarolinaâCaptain of the Port Zone, Atlantic Beach, North Carolina: (252) 247-4545...Coast Guard Sector North CarolinaâCOTP Zone 1...

2010-07-01

330

33 CFR 165.506 - Safety Zones; Fifth Coast Guard District Fireworks Displays.  

Code of Federal Regulations, 2010 CFR

...3 feet above ground level when on land immediately adjacent...Coast Guard Sector North CarolinaâCaptain of the Port Zone, Atlantic Beach, North Carolina: (252) 247-4545...Coast Guard Sector North CarolinaâCOTP Zone 1...

2009-07-01

331

33 CFR 165.506 - Safety Zones; Fireworks Displays in the Fifth Coast Guard District.  

Code of Federal Regulations, 2013 CFR

...3 feet above ground level when on land immediately adjacent...Coast Guard Sector North CarolinaâCaptain of the Port Zone, Wilmington, North Carolina: (877) 229-0770...Coast Guard Sector North CarolinaâCOTP Zone 1....

2013-07-01

332

75 FR 71187 - Atlantic Coast Financial Corporation, Waycross, GA; Approval of Conversion Application  

Federal Register 2010, 2011, 2012, 2013

...Corporation, Waycross, GA; Approval of Conversion Application Notice is hereby given that...application of Atlantic Coast Federal, MHC and Atlantic Coast Bank, Waycross, Georgia...Street, NW., Washington, DC 20552, and the OTS Southeast Regional Office,...

2010-11-22

333

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

334

33 CFR 125.11 - Form of Coast Guard Port Security Card.  

Code of Federal Regulations, 2010 CFR

The Coast Guard Port Security Card issued by the Coast Guard under the provisions of this subchapter shall be a laminated card bearing photograph, signature, fingerprint, and personal description of the holder, and other pertinent...

2012-07-01

335

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

Code of Federal Regulations, 2010 CFR

...resilient, and sustainable oceans, coasts, and Great Lakes...future generations. Yet, the oceans, coasts, and Great Lakes...Challenges include water pollution and degraded coastal water...disease, rising sea levels, and ocean acidification. Oceans...

2010-01-01

336

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

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 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...

2013-04-01

337

77 FR 27156 - Safety Zone, Temporary Change for Recurring Fifth Coast Guard District Fireworks Displays...  

Federal Register 2010, 2011, 2012, 2013

...Recurring Fifth Coast Guard District Fireworks Displays, Cavalier Golf & Yacht Club Independence Day Fireworks Display, Broad Bay Virginia Beach...safety zone regulation for one recurring firework display within the Fifth Coast...

2012-05-09

338

77 FR 39174 - Safety Zone, Temporary Change for Recurring Fifth Coast Guard District Fireworks Displays...  

Federal Register 2010, 2011, 2012, 2013

...Recurring Fifth Coast Guard District Fireworks Displays, Cavalier Golf & Yacht Club Independence Day Fireworks Display, Broad Bay; Virginia Beach...safety zone regulation for one recurring fireworks display within the Fifth Coast...

2012-07-02

339

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

Federal Register 2010, 2011, 2012, 2013

...Zone, Temporary Change for Recurring Fireworks Display Within the Fifth Coast Guard...safety zone regulations for a recurring fireworks display within the Fifth Coast Guard...This regulation applies to two recurring fireworks display events that take place at...

2012-03-13

340

Stewardship: The Virginia Coast Reserve Study. Volume IV.  

National Technical Information Service (NTIS)

The marshes and islands of the Virginia Coast Reserve are a precious resource. They are the least disturbed remant of the thin green line of wetlands which once cloaked the Eastern Seaboard. They include beaches, maritime forests and thickets, sand dunes,...

G. J. Hennessey J. W. Humke M. S. Lukowski R. E. Jenkins R. M. Culter

1976-01-01

341

Gulf Coast Shrimp Data, January 1958 - December 1976.  

National Technical Information Service (NTIS)

Gulf Coast Shrimp Data is published monthly and includes an annual summary reported by depth and area of capture, species, size, number of trips, and days fished. The monthly issues contain two tables on the commercial shrimp landings by U.S. craft at U.S...

1978-01-01

342

Coast Guard Law Enforcement Detachments in the War on Terror.  

National Technical Information Service (NTIS)

This monograph explores the role of Coast Guard law enforcement detachments (LEDETs) abroad in the post-Cold War, post-9/11 strategic security environment. Drawing on the work of National Defense University and Thomas Barnett, the author finds that the gl...

G. R. Bowen

2006-01-01

343

Beach Nourishment Along the Southeast Atlantic and Gulf Coasts.  

National Technical Information Service (NTIS)

A short history of some of the monitored beach fills along the southeast Atlantic and Gulf Coasts is given and some of the methods which have been used in nourishment projects are discussed in an effort to help resolve this often unanswered question -- wi...

T. L. Walton J. A. Purpura

1977-01-01

344

Maritime homeland security modeling: Coast Guard issues and perspective  

Microsoft Academic Search

Under the Department of Homeland Security (DHS), the U.S. Coast Guard (USCG) is the lead agency for maritime homeland security and, as such, is the primary guardian of America's waterways and coastlines. Maritime homeland security presents unique challenges for the USCG operational community and researchers tasked with finding improved technologies, tactics, and procedures that can enhance mission success. USCG \\

Timothy R. Girton; Kevin Downer

2004-01-01

345

State of the Arctic Coast 2010: Scientific Review and Outlook  

Microsoft Academic Search

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

V. Rachold; D. L. Forbes; H. Kremer; H. Lantuit

2010-01-01

346

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

347

An Observing System Experiment with the West Coast Picket Fence  

Microsoft Academic Search

Analyses and forecasts from a modern data assimilation and modeling system are used to evaluate the impact of a special rawinsonde dataset of 3-h soundings at seven sites interspersed with the seven regular sites along the West Coast (to form a so-called picket fence to intercept all transiting circulations) plus special 6-h rawin- sondes over the National Weather Service Western

Paul A. Hirschberg; Perry C. Shafran; Russell L. Elsberry; Elizabeth A. Ritchie

2001-01-01

348

Florida East Coast Thanksgiving Holiday Storm of 1984.  

National Technical Information Service (NTIS)

During the period November 21 through 24, 1984, a low pressure system formed over the Atlantic Ocean near the southeast Florida coast and developed into an intense storm, unusually strong and well defined for this area and season. The storm produced exten...

B. Sylvern C. Brock F. Gonzales R. Biedinger

1985-01-01

349

Research Spotlight: Mapping U.S. West Coast surface circulation  

Microsoft Academic Search

A network of high-frequency radar systems designed for mapping ocean surface currents now provides unprecedented detail of coastal ocean dynamics along the U.S. West Coast, according to Kim et al. The network has grown over the past decade from a few radars to what is now considered the largest network of its kind in the world, providing nearly complete coverage

Ernie Tretkoff

2011-01-01

350

Diet of brown hyaenas (Parahyaena brunnea) on the Namibian coast  

Microsoft Academic Search

The diet of brown hyaenas on the southern Namibian coast was determined via direct observation, scat analysis and by examining the faunal remains at nine dens consisting of 16 135 bones and bone fragments. All remains were identified to species and element where possible. Movements of four individual hyaenas from three different coastal clans were tracked via satellite collar. Range

Brian F. Kuhn; Ingrid Wiesel; John D. Skinner

2008-01-01

351

Information System for U.S. Coast Guard Medical Support.  

National Technical Information Service (NTIS)

A management information system was developed and tested for collecting and presenting information on the amount and type of services provided by the U.S. Coast Guard Medical Program. The system consists of a visit form to be completed for each visit, a s...

M. D. Koontz B. L. Norton

1976-01-01

352

FISH LARVAE OF THE ESTUARIES AND COAST OF CENTRAL MAINE  

Microsoft Academic Search

Seasonal sampling of fish larvae in the central Maine coast took 22 kinds of larvae; 17 were identified to species, 3 to family, and 2 were not identified. Larvae of a few highly abundant species were present in the winter and early spring. These hatched from demersal eggs and were concentrated in the upper estuaries. The remaining species were less

STANLEY B. CHENOWETH

1973-01-01

353

Gulf Coast Sea Turtle Hatchlings Released at KSC  

NASA Video Gallery

The first group of hatchlings from endangered sea turtle eggs brought from beaches along the northern U.S. Gulf Coast was released into the Atlantic Ocean off NASA's Kennedy Space Center in Florida on July 11. Twenty-two Kemp's ridley turtles were set free on a Kennedy Space Center/Canaveral National Seashore beach.

Jim Wilson

2010-07-14

354

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.

355

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...

356

Socioeconomic Conditions Along the World's Tropical Coasts: 2008.  

National Technical Information Service (NTIS)

The worlds tropical coasts are home to over two billion people, many of whom live in poverty and depend on coastal resources such as coral reef fish for their livelihood, sustenance, and cultural traditions. This report synthesizes data from individual so...

2008-01-01

357

Quaternary phosphorites off the southeast coast of India  

Microsoft Academic Search

Detailed petrological, mineralogical, geochemical and radiogenic (U, Sr, Nd) and stable isotope (C, O, S) studies have been carried out on the Quaternary phosphorites of the continental margin off Chennai, southeast coast of India. These phosphorites are formed as a result of trapping and binding of sediments by microbial mats and are similar to phosphate stratiform stromatolites. Detrital and biogenic

V. Purnachandra Rao; A Michard; S. W. A Naqvi; M. E Böttcher; Rama Krishnaswamy; M Thamban; R Natarajan; D. V Borole

2002-01-01

358

Gaining more access is focus on West Coast  

Microsoft Academic Search

A Beaufort Sea wildcat off the tantalizing Arctic National Wildlife Refuge highlights U.S. West Coast exploration\\/development action this year. Targeting the same structure tapped by the only wildcat drilled on ANWR's coastal Plain, the Tenneco Oil Exploration and Production offshore well may give more clues as to the potential of North America's most prospective and most controversial untapped petroleum province.

1988-01-01

359

Coast Terminal Radar Approach Control Facility (TRACON) Refurbishment.  

National Technical Information Service (NTIS)

This study was conducted as a result of the Western Region's decision to change the Coast Terminal Radar Approach Control Facility (TRACON) layout from a horizontal radar island-type operation to a vertical radar perimeter-type operation. This change was ...

D. Bottomley F. F. Hierbaum

1982-01-01

360

URBANIZATION OF SLOVENIAN COAST AND PRESERVING CULTURAL HERITAGE  

Microsoft Academic Search

The terrain of the Slovenian coast has a characteristic Eocene flysch base. The relief, shaped by the geolitologic base and tectonic and erosive process gives a special morphologic character to the lanscape (Stritar ,1990). Together with the Mediterranean climate and vegetation, it gives a characteristic image to the landscapes. The bay of Koper is the largest on the northwestern Istrian

STOKIN MARKO

361

The coast effect response in geomagnetic field measurements  

NASA Astrophysics Data System (ADS)

Two-dimensional (2D) numerical models of electromagnetic (EM) induction for anomalous conductors in continental and island coastal regions are studied to determine constraints on ocean-conductor separation distances that would permit, to within an acceptable approximation, a simple vector subtraction of the coast effect response. The anomalous conductors are in the form of an upwelling or a depression in the asthenospheric conductive substratum at depth. The coast effect response range ( YR) is arbitrarily taken to be the distance from the ocean at which the | B z/B y n| coast effect response is reduced to a value of 0.2. The response ranges are determined and presented empirically as a function of period for a range of conductive substratum depths, island widths, and ocean depths. The response ranges are tested in 2D numerical models that include an anomalous conductor in the form of either an upwelling or a depression in the conductive substratum under the ocean and host Earth. The induction arrows for the anomalous conductor are shown to be in good agreement with the difference arrows obtained by subtracting the responses of a model without the anomalous conductor from the responses of the model that includes the anomalous conductor. As an application, difference arrows, obtained by subtracting three-dimensional laboratory analogue model coast effect responses from field site responses, are employed in the interpretation of induction arrow responses available for a number of sites in the Bohai Bay region of China and the Kii Peninsula region of Japan.

Dosso, H. W.; Meng, Z. W.

1992-02-01

362

Identification of geopressured occurrences outside of the Gulf Coast  

Microsoft Academic Search

Methane dissolved in saline formation waters under abnormally high pressure (geopressure) is one of several unconventional gas sources that is under intensive investigation by the Department of Energy. The most well-known and studied region of geopressures in the US is the Gulf Coast geosyncline. Recent studies, however, indicate that this phenomenon is displayed in many other sedimentary basins encompassing lithologies

Strongin

1981-01-01

363

A qualitative analysis of reintroducing cabotage onto New Zealand's coasts  

Microsoft Academic Search

This paper provides a qualitative analysis of the proposal to ‘reintroduce cabotage’ onto New Zealand's coasts. New Zealand's coastal shipping trade was opened up to international competition in 1995. The analysis is principally based on a stakeholder analysis of the 83 submissions received by the Shipping Industry Review team, as part of the Government's study to identify ways to increase

Robert Y. Cavana

2004-01-01

364

An Oceanographic Section off the California Coast February 1966.  

National Technical Information Service (NTIS)

Physical oceanographic data obtained during February 1966 at 11 sites along 39 degrees N from 135 degrees W.eastward to the 100-fathom curve off the California coast are presented. Variations in properties, geostrophic flow and volume transport from data ...

R. K. Reed N. P. Laird

1966-01-01

365

MEASUREMENTS OF IONOSPHERIC CURRENTS OFF THE COAST OF PERU  

Microsoft Academic Search

Four Nike-Apache sounding rockets were launched off the coast of Peru, two near the magnetic dip equator and two to the north of the dip equator. Measurements were made of the magnetic field (for current density determination) with a proton magnetometer and of electron number density (proportional to conductivity) with a DC Langmuir probe. One of the dip equator flights

Nelson C. Maynard

1967-01-01

366

Regional seismotectonic model for the southern Coast Ranges  

SciTech Connect

On the basis of seismicity in the southern Coast Ranges for the 11 years before the May 2 earthquake and on focal mechanisms of selected moderate recent earthquakes in the region, the authors propose a model for the generation of reverse- and thrust-fault earthquakes, such as the May 2 earthquake, along both the east and west flanks of the Coast Ranges. These earthquakes appear to result from a component of apparent convergent displacement across the San Andreas transform system in the southern Coast Ranges. Earthquakes with reverse and thrust focal mechanisms occur in regions with a distinctive pattern of seismicity characterized by detached clusters of epicenters. These regions lie along the flanks of the southern Coast Ranges and are separated from the San Andreas fault by other regions of relative quiescence. In this model, the reverse- and thrust-fault earthquakes occur where detachment zones within a ductile lower crust beneath the center of the transform system pass upward into the brittle upper crust along its margins. Convergence across the transform system, together with regions of unusually strong materials in the brittle upper crust flanking the San Andreas fault southeast of Cholame, may also play an important role in producing great earthquakes in that region.

Eaton, J.P.; Rymer, M.J.

1990-01-01

367

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

368

Mangrove Structure on the Eastern Coast of Samar Island, Philippines  

Microsoft Academic Search

The mangrove forest in the Eastern Coast of Samar Island plays an important role in the protection of the coastline with the coconut plantation. No information is available that will guide land managers and policy makers on the status of this coastal resource. In 1997 an assessment was conducted to determine the tree density, canopy height, basal area, and density

Antonio B. Mendoza; Danilo P. Alura

369

Accelerated drowning of the Delaware Bay coast 1800 years ago  

Microsoft Academic Search

Paleontological, geochemical, and lithological indicators of former marine and nonmarine conditions are correlated between 13 cores from a tidal wetland (Wolfe Glade) on the southeastern coast of Delaware Bay. The cores reveal at least 5 marsh-wide transgressive episodes which the authors interpret as representing periods of marsh drowning. One of the most significant of these episodes occurred 1,800 [+-] 200

C. H. Fletcher; J. E. Pizzuto; S. John; J. Van Pelt

1992-01-01

370

Organochlorines in codfish from harbours along the Norwegian Coast  

Microsoft Academic Search

Conclusions Levels of PCBs, HCB and sum-DDT found in codfish liver obtained near the harbours of several towns located along the coast of Norway, are generally low. The degree of contamination appeared to be somewhat higher in the Oslo fjord area than at the other sampling sites. Exceptions to this general picture were Bergen (high levels of sum-DDT and PCBs)

E. M. Brevik; J. E. Bjerk; N. J. Kveseth

1978-01-01

371

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

372

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

373

Definition of Homogeneous Environmental Management Units for the Catalan Coast  

NASA Astrophysics Data System (ADS)

Geographical areas constitute the basic implementation locus for integrated coastal zone management strategies and activities. Because the definition of territorial planning objectives may be affected by socioeconomic and environmental characteristics, one of the main steps in the process involves dividing the coast into homogeneous environmental management units (HEMUs). This article presents a general and simple method for regionalizing the landside of a coastal zone into HEMUs and illustrates it through application to the Catalan coast. Socioeconomic and natural (biophysical) subsystems were selected as the most appropriate dimensions of the regionalization process. Dimensions were described using 11 spatial themes, which were managed in a geographic information system environment that proved to be an adequate tool for the purpose. A final coastal zone map of four classes of HEMUs connected to local administrative units was obtained, and because it reflects the current natural and socioeconomic dynamics, it can be considered as an initial step in the planning process for the Catalan coast. Although the proposed method was developed based on the characteristics of the Catalan coast, it is general enough to be adapted and applied to most developed or developing coastal areas.

Brenner, Jorge; Jimenez, José A.; Sardá, Rafael

2006-12-01

374

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

375

Saving California's Coast: The Coastal Zone Initiative and Its Aftermath  

Microsoft Academic Search

In 1972 California's voters gave control over nearly all construction along the state's 1,000?mile coastline to powerful state and regional boards. These boards will administer a permit system for three years, then submit a plan to the Legislature for the future preservation and development of the coast. The permit zone includes a wide variety of natural environments and possible uses,

Robert G. Healy

1974-01-01

376

What is seen and unseen on the Gulf coast  

Microsoft Academic Search

Purpose – The purpose of this paper is to analyze the rebuilding of the Gulf coast post-Hurricane Katrina. Design\\/methodology\\/approach – The paper posits that though Frédéric Bastiat passed away in 1850, the beauty of his sound economic reasoning is that it does not change over time and that his essay, “That which is seen, and that which is not seen,”

Max Raskin; Scott A. Kjar; Robert Rahm

2008-01-01

377

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

378

Combating piracy off the coast of Somalia: current legal challenges  

Microsoft Academic Search

The ongoing maritime operations against piracy off the coast of Somalia have not only put naval enforcement against piracy at sea in the spotlight, but also the legal aftermath of what to do with pirates after their capture. While warships at sea within the current legal framework of UNCLOS and the UN Security Council amplifications specifically adopted for the case

M. D. Fink; R. J. Galvin

2009-01-01

379

Study of waste fluid injection on the Texas Gulf Coast  

Microsoft Academic Search

Two hundred seventy injection wells for the disposal of industrial fluid wastes are currently in operation in the US; one-half of these are located in the Gulf Coast region. The number of operating wells in the US will increase by at least 20 each year in the next few years. Volumes of fluids that may be injected are limited by

Georges

1978-01-01

380

Problem of secondary porosity: Frio Formation (Oligocene), Texas Gulf Coast  

Microsoft Academic Search

Secondary porosity, formed by the dissolution of both carbonate and silicate minerals, especially K-feldspars, is widely developed in sandstones of the Frio Formation (Oligocene) in the Texas Gulf Coast. CO2 produced by decarboxylation of organic matter is commonly suggested as the acid required for dissolution. Material balance calculations indicate that CO2 produced by decarboxylation of organic matter in Frio Formation

Paul D. Lundegard; Lynton S. Land; William E. Galloway

1984-01-01

381

Regional stratigraphy and petroleum potential of Gulf Coast Lower Cretaceous  

Microsoft Academic Search

Lower Cretaceous sediments were deposited throughout the Gulf Coast during the Neocomian, Aptian, Albian, and early Cenomanian epochs. Basal sandstones extend across the entire region, onlapping Upper Jurassic terrigeneous strata. Following the initial stage of detrital rock deposition, a shallow epicontinental sea covered the W. coastal plain and regions on the south and west. In this area, and also in

Rainwater

1970-01-01

382

Potential for production of geopressured geothermal energy, Texas Gulf Coast  

Microsoft Academic Search

Tertiary strata of the Texas Gulf Coast include several terrigenous depositional wedges, some of which thicken abruptly at their downdip ends as a result of contemporaneous movement of growth faults and underlying salt. The Frio Formation is one of these wedges. Broad regional studies, followed by detailed local investigations, were pursued in order to delineate prospective areas for production of

D. G. Bebout; A. R. Gregory; R. G. Loucks

1979-01-01

383

Complexities of China's Coast in Response to Climate Change  

Microsoft Academic Search

Global warming and rising sea level have been observed to exert great impacts on China's coast in the past century, including increased coastal erosion, degraded coastal ecosystems, exacerbated saltwater intrusion, and enhanced storm surges. The impacts of climate change and the adjustments of coastal systems are significantly site specific, resulting from local differences in climate change, coastal physiographic and ecological

Fan Daidu; Li Congxian

384

70. Photocopy of 4' 10 x 3'10 Propeller, U.S. Coast ...  

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

70. Photocopy of 4' 10 x 3'10 Propeller, U.S. Coast Guard 133 Ft. Tender. Columbian Bronze Corporation, Freeport, Long Island, New York, Coast Guard Headquarters Drawing No. 540-WAGL-4400-4, dated July 1953. Original drawing property of the U.S. Coast Guard. - U.S. Coast Guard Cutter WHITE HEATH, USGS Integrated Support Command Boston, 427 Commercial Street, Boston, Suffolk County, MA

385

78 FR 18849 - Disapproval of Implementation Plan Revisions; State of California; South Coast VMT Emissions...  

Federal Register 2010, 2011, 2012, 2013

...Plan Revisions; State of California; South Coast VMT Emissions Offset Demonstrations...the Clean Air Act for the Los Angeles-South Coast Air Basin 1-hour and 8-hour ozone...1-hour and 8-hour ozone standard in the South Coast nonattainment area. EPA is...

2013-03-28

386

40 CFR 52.243 - Interim approval of the Carbon Monoxide plan for the South Coast.  

Code of Federal Regulations, 2013 CFR

...approval of the Carbon Monoxide plan for the South Coast. 52.243 Section 52.243 ...approval of the Carbon Monoxide plan for the South Coast. The Carbon Monoxide plan for the Los Angeles-South Coast Air Basin is approved...

2013-07-01

387

33 CFR 166.400 - Areas along the coast of Alaska.  

Code of Federal Regulations, 2012 CFR

...2013-07-01 false Areas along the coast of Alaska. 166.400 Section 166.400 Navigation...166.400 Areas along the coast of Alaska. (a) Purpose. Fairways, as...provide safe vessel routes along the coast of Alaska. (b) Designated Areas...

2013-07-01

388

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

389

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

390

77 FR 26699 - Safety Zone; Coast Guard Exercise, Hood Canal, WA  

Federal Register 2010, 2011, 2012, 2013

...1625-AA00 Safety Zone; Coast Guard Exercise, Hood Canal, WA AGENCY: Coast Guard...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...

2012-05-07

391

46 CFR 30.10-19 - Coast Guard District Commander-TB/ALL.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Coast Guard District Commander-TB/ALL. 30...Section 30.10-19 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK... Definitions § 30.10-19 Coast Guard District CommanderâTB/ALL. The...

2012-10-01

392

46 CFR 30.10-19 - Coast Guard District Commander-TB/ALL.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Coast Guard District Commander-TB/ALL. 30...Section 30.10-19 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY TANK... Definitions § 30.10-19 Coast Guard District CommanderâTB/ALL. The...

2011-10-01

393

46 CFR 11.309 - Coast Guard-accepted training other than approved courses.  

Code of Federal Regulations, 2010 CFR

...2009-10-01 2009-10-01 false Coast Guard-accepted training other than approved...309 Section 11.309 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY MERCHANT...with Approved Courses § 11.309 Coast Guard-accepted training other than...

2009-10-01

394

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

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Period of validity of Coast Guard Port Security Cards. 125.12 Section...Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED...125.12 Period of validity of Coast Guard Port Security Cards. (a) The...

2010-07-01

395

46 CFR 12.03-1 - Coast Guard-accepted training other than approved courses.  

Code of Federal Regulations, 2010 CFR

...2009-10-01 2009-10-01 false Coast Guard-accepted training other than approved... Section 12.03-1 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY MERCHANT...Accepted Training § 12.03-1 Coast Guard-accepted training other than...

2009-10-01

396

33 CFR 166.300 - Areas along the coast of California.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Areas along the coast of California. 166.300 Section 166.300 ...166.300 Areas along the coast of California. (a) Purpose. Fairways as...safe vessel routes along the coast of California. (b) Designated Areasâ...

2013-07-01

397

The Oil Spill Process: The Effect of Coast Guard Monitoring on Oil Spills  

Microsoft Academic Search

In this paper we evaluate the effectiveness of Coast Guard enforcement efforts in reducing oil spills. We consider how vessel owners’ behavior changes with increases in the probability of being monitored. We also study the effectiveness of the performance standards adopted by the Coast Guard in 1984. We conclude that: (i) Coast Guard enforcement effort works to decrease both the

Montserrat Viladrich Grau; Theodore Groves

1997-01-01

398

47 CFR 80.133 - Private coast stations using facsimile in Alaska.  

Code of Federal Regulations, 2012 CFR

...Private coast stations using facsimile in Alaska. 80.133 Section 80.133 Telecommunication...Private coast stations using facsimile in Alaska. Facsimile techniques may be implemented...paragraphs. (a) Private coast stations in Alaska are eligible to use facsimile...

2012-10-01

399

47 CFR 80.133 - Private coast stations using facsimile in Alaska.  

Code of Federal Regulations, 2011 CFR

...Private coast stations using facsimile in Alaska. 80.133 Section 80.133 Telecommunication...Private coast stations using facsimile in Alaska. Facsimile techniques may be implemented...paragraphs. (a) Private coast stations in Alaska are eligible to use facsimile...

2011-10-01

400

Gulf Coast-East Coast magnetic anomaly I: Root of the main crustal decollement for the Appalachian-Ouachita orogen  

SciTech Connect

The Gulf Coast-East Coast magnetic anomaly extends for at least 4000 km from south-central Texas to offshore Newfoundland as one of the longest continuous tectonic features in North America and a major crustal element of the entire North Atlantic-Gulf Coast region. Analysis of 28 profiles spaced at 100km intervals and four computed models demonstrate that the anomaly may be explained by a thick zone of mafic and ultramafic rocks averaging 13-15 km in depth. The trend of the anomaly closely follows the trend of main Appalachian features: in the Gulf Coast of Louisiana, the anomaly is as far south of the Ouachita front as it is east of the western limit of deformation through the central Appalachians. Because the anomaly continues across well-known continental crust in northern Florida and onshore Texas, it cannot plausibly be ascribed to an edge effect at the boundary of oceanic with continental crustal compositions. The northwest-verging, deep-crustal events discovered in COCORP data from the Ouachitas and Appalachians suggest an analogy with the main suture of the Himalayan orogen in the Tibetan Plateau. In this paper the anomaly is identified with the late Paleozoic Alleghenian megasuture, in which the northwest-verging crustal-detachment surfaces ultimately root.

Hall, D.J. (Total Minatome Corporation, Houston, TX (USA))

1990-09-01

401

Variations in nearshore waves along Karnataka, west coast of India  

NASA Astrophysics Data System (ADS)

Wind wave spectra were recorded simultaneously at three shallow (water depth 7-9 m) locations (Malpe, Honnavar and Karwar) along the 200 km stretch of the state of Karnataka in 2009 during 27 April-24 May (representing conditions prior to onset of the Indian summer monsoon), 12 June-8 July (monsoon), and 1-31 October (post-monsoon). Each spectrum was based on data recorded for half an hour using a waverider buoy. The paper describes characteristics of the spectra and the wave parameters derived from the spectra. Both reveal the dramatic changes that occur in the wave field due to the summer monsoon. The changes were virtually identical at all the three locations suggesting that the wave characteristics described here are representative of the conditions that exist along the coast of Karnataka State, west coast of India.

Sanil Kumar, V.; Johnson, Glejin; Udhaba Dora, G.; Chempalayil, Sajiv Philip; Singh, Jai; Pednekar, P.

2012-04-01

402

Geologist argues for renewed, deeper look at US Gulf Coast  

SciTech Connect

Over 10 bbo (billion barrels of oil) and about 130 Tcf of gas have been reported as proved reserves discovered in the offshore U.S. continental shelf (OCS or outer continental shelf) along the northern Gulf Coast. Of these reserves, only 2.5 bbo and 36,146 Bcf of gas remain, which seem small in comparison to a U.S. consumption rate of over 5 bbo/yr. Reserves, new additions and production levels in the Gulf Coast region have fallen for the last decade and more. Rig and crew boat counts are down, employment is down, and it is difficult for most to remain optimistic. This paper reports that there is good reason for optimism---A major new exploration play for oil and gas exists on the Texas/Louisiana shelf. Modern geological, geophysical (mainly seismic) and geochemical data, when combined, offer a sound base for a major renewed exploration campaign.

Pratsch, J.C.

1992-09-01

403

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

404

East Coast storm surges provide unique climate record  

NASA Astrophysics Data System (ADS)

Coastal storms repeatedly hit the U.S. East Coast, costing many billions of dollars in losses. In 1992 Hurricane Andrew alone caused about $35-40 billion in damage. In addition to property damage, coastal storms are the major contributors to beach and dune erosion, overwash processes, and the opening of tidal inlets on barrier islands. What changes, if any, can we expect in coastal storm activity and intensity as global temperatures rise?

Zhang, Keqi; Douglas, Bruce C.; Leatherman, Stephen P.

405

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

406

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

407

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

408

Prehistoric Native American Fisheries of the Central California Coast  

Microsoft Academic Search

Over 77,000 fish remains from 51 archaeological sites on the central California coast between San Mateo and San Luis Obispo counties, deposited between 6200 B.C. and A.D. 1830, were studied to assess prehistoric species distribution, diversity, and Native American fisheries. Remains were obtained from exposed rocky coastal sites, lagoon-estuaries at Elkhorn Slough and Morro Bay, and the freshwater drainages of

Kenneth W. Gobalet; Terry L. Jones

1995-01-01

409

Prehistoric Native American Fisheries of the Central California Coast  

Microsoft Academic Search

Over 77,000 fish remains from 51 archaeological sites on the central California coast between San Mateo and San Luis Obispo counties, deposited between 6200 B.c. and A.D. 1830, were studied to assess prehistoric species distribution, diversity, and Native American fisheries. Remains were obtained from exposed rocky coastal sites, lagoon–estuaries at Elkhorn Slough and Morro Bay, and the freshwater drainages of

Kenneth W. Gobalet; Terry L. Jones

1995-01-01

410

Preliminary meteorological results for 1992 West Coast Scotland Experiment  

Microsoft Academic Search

This memo documents preliminary meteorological results from the 1992 West Coast Scotland Experiment, a joint US\\/UK radar ocean imaging experiment. Measurements of wind speed and direction are reported for both phases of the experiment covering the periods from June 7--13 and from June 19--25. The measurements were obtained using a Campbell Scientific CR10 Datalogger and R. M. Young model 03001-5

Robey

1993-01-01

411

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

412

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

413

Air Quality Study over the Atlantic Coast of Iberian Peninsula  

Microsoft Academic Search

The west coast of Iberian Peninsula, surrounded by the Atlantic Ocean, is characterized by complex topography and some favourable\\u000a synoptical situations, which imply the appearance of mesoscale circulations strongly influencing the transport of pollutants.\\u000a On the other hand, the regions of Galicia (NW Spain), and the North of Portugal, have important air pollutants sources (power\\u000a plants, chemical industries, traffic and

Ana C. Carvalho; Anabela Carvalho; Alexandra Monteiro; Carlos Borrego; Ana I. Miranda; Ivan R. Gelpi; Vicent Pérez-Muñuzuri; Maria R. Méndez; José A. Souto

414

Topographic and location map of Bonita Point Coast Guard and ...  

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

Topographic and location map of Bonita Point Coast Guard and lighthouse station, June 1940, this drawing shows the Bonita Ridge access road retaining wall and general conditions at Fort Barry and Bonita Ridge (upper left) before the construction of Signal Corps Radar (S.C.R.) 296 Station 5 - Fort Barry, Signal Corps Radar 296, Station 5, Transmitter Building Foundation, Point Bonita, Marin Headlands, Sausalito, Marin County, CA

415

Confronting Climate Change in the Gulf Coast Region Curriculum Guide  

NSDL National Science Digital Library

Curriculum guide offers ten lesson plans introducing climate change and global warming issues, indicators and measurements of change, predictions and impacts on Gulf Coast climate, ecosystems, and human communities, and means to reduce human contributions. Activities identify common misconceptions about the topic, provide definitions and content to clarify, promote student research, provide links to additional resources, compare Gulf ecosystems to other regions globally. Concept mapping explained as an assessment tool.

416

Heat flow through the West Coast, South Island, New Zealand  

Microsoft Academic Search

Bottom?hole temperature data collected from 24 petroleum exploration wells have been used to calculate conductive heat flow through the West Coast, South Island. Steady?state modelling suggests a mean heat flow of 76 ± 15 mW\\/m (20%, 1 SD), a figure higher than those obtained previously by Funnell et al. and Funnell & Allis for the southern Taranaki and southwest South

John Townend

1999-01-01

417

Echinoderm (Echinodermata) diversity in the Pacific coast of Central America  

Microsoft Academic Search

We present a systematic list of the echinoderms of Central America Pacific coast and offshore island, based on specimens of\\u000a the National Museum of Natural History, Smithsonian Institution, Washington D.C., the Invertebrate Zoology and Geology collections\\u000a of the California Academy of Sciences, San Francisco, the Museo de Zoología, Universidad de Costa Rica, San José and published\\u000a accounts. A total of

Juan José Alvarado; Francisco A. Solís-Marín; Cynthia G. Ahearn

2010-01-01

418

Geologist argues for renewed, deeper look at US Gulf Coast  

Microsoft Academic Search

Over 10 bbo (billion barrels of oil) and about 130 Tcf of gas have been reported as proved reserves discovered in the offshore U.S. continental shelf (OCS or outer continental shelf) along the northern Gulf Coast. Of these reserves, only 2.5 bbo and 36,146 Bcf of gas remain, which seem small in comparison to a U.S. consumption rate of over

Pratsch

1992-01-01

419

Gulf of Mexico and Atlantic coast sea level change  

NASA Astrophysics Data System (ADS)

Twentieth-century relative sea level rise shows considerable variability along the U.S. East and Gulf coasts. Local rates of rise lie in the range of about 1.5 to more than 4 mm per year for records from Key West, Florida, to New York City. Rates of sea level rise in the Gulf of Mexico can be much higher. In Texas and Louisiana, long-term water levels are rising up to about 10 mm per year. This is having disastrous consequences in the form of wetlands loss in the region, estimated to be as much as 65 km2 per year in the Mississippi Delta area of Louisiana alone. Beach erosion is also significant along both the Gulf and Atlantic coasts, resulting in ever-increasing exposure of fixed structures to the damaging impacts of storms. The especially high rates of sea level rise in Louisiana and Texas are a result of their particular geomorphology, and anthropogenic alterations in the form of sediment diversion and withdrawal of underground fluids. The average long-term local rate of sea level rise on the rest of the U.S. East and Gulf coasts when corrected for glacial isostatic adjustment is about 2 mm per year, in conformity with 20th century global sea level rise. U.S. East and Gulf coast tide gauge records also have regionally coherent low frequency (decadal and longer) variations that need to be understood because of their impact on wetlands loss, and to enable accurate determination of long-term trends of sea level rise.

Douglas, Bruce C.

420

Mercury content in some marine fish from the Alexandria coast.  

PubMed

The total Hg of 6 marine fish species, caught from the 3 main fishing grounds along the coast of Alexandria, was determined and the distribution among the different organs was studied. It was found that the total Hg levels in fish differed according to species, size, and organs of fish as well as fishing ground. The highest value was found in large size especially in the viscera of Mullus barbatus obtained from El-Mex fishing ground. PMID:3431578

Moharram, Y G; Moustafa, E K; el-Sokkary, A; Attia, M A

1987-01-01

421

A new photon-counting spectrometer for the COAST  

Microsoft Academic Search

Electron multiplying CCDs, e.g. as delivered by E2V Technologies and Texas Instruments, have the potential to become the detectors of choice for all future optical interferometers, replacing expensive fibre-fed arrays of APDs. We report here on the development of a new 500-channel spectroscopic back end for the COAST interferometer that exploits such a device. An E2V Technologies CCD97 (back illuminated)

Alastair G. Basden; Christopher A. Haniff; Craig D. Mackay; Mick T. Bridgeland; Donald M. Wilson; John S. Young; David F. Buscher

2004-01-01

422

Changing morphology of Ghana’s Accra coast  

Microsoft Academic Search

Coastal features in Ghana's Accra coast reflect both past and present processes that have been undergoing changes. These changes\\u000a are influenced by a range of morphogenic factors such as geology and climatic conditions. These regimes have shaped the coastal\\u000a geomorphic features through weathering processes that decompose and disintegrate the coastal rock. Sea level rise due to climate\\u000a change is expected

Kwasi Appeaning Addo

423

Chemical composition of cloudwater collected along the California coast  

SciTech Connect

Nocturnal fogs and low-lying clouds are frequent seasonal occurences along the California coast. During the summer, their frequency may exceed 50% at coastal sites. These clouds form at the base of the Pacific High inversion. Ventilation along the coast is further reduced by land/sea breeze systems, which recirculate the same air parcels several times across the coastline. During the past four years the authors have collected fog water at both urban and nonurban coastal sites. The locations and collection procedures are described. With the exception of one fog event in Morro Bay, all the fog-water sampled has been acidic. The highly acid samples were associated with large concentrations of SO/sub 4//sup 2 -/ and NO/sub 3//sup -/. Ammonia concentrations were comparatively low in the most acidic samples. The marine, continental, and anthropogenic contributions to the loading of solutes in fogwater were estimated using a step-wise fitting method. The sites in and around Los Angeles were most affected by anthropogenic sources. On an equivalent basis, NO/sub 3//sup -/ derived from secondary aerosol, was 2 to 3 times higher than SO/sub 4//sup 2 -/ in the Los Angeles basin. Substantial influences from continental and anthropogenic sources were observed even at the remote coastal sites. Because emissions of NH/sub 3/ and calcareous dust are slight along the coast, acid-neutralizing capacities in coastal air are insufficient to neutralize even small acid inputs.

Hoffmann, M.R.; Collett, J.; Daube, B.; Munger, J.W.

1986-04-01

424

Littoral processes: US Coast Guard Station, Fort Point, San Francisco  

SciTech Connect

The US Coast Guard Station, Fort Point is located three-quarters of a nautical mile southeast of the Golden Gate Strait, the entrance to San Francisco Bay. The existing storm wave conditions at Fort Point Station pier make it extremely dangerous for the SAR crews to get on and off the Motor Life Boats at times requiring the vessels to be moored at the San Francisco Yacht Harbor about 1.5 miles east of the Fort Point Station. To mitigate these harsh working conditions the US Coast Guard is considering the feasibility of constructing suitable all-weather moorings for the three Motor Life Boats at the Fort Point Station to enable unimpeded SAR operations, to provide safe working conditions for Coast Guard small boat crews, and to improve small boat maintenance conditions at Fort Point Station. The purpose of this report is to identify, analyze and evaluate physical environmental factors that could affect all-weather moorings siting, configuration and entrance location, as well as potential post construction alterations to littoral conditions and processes. This report includes a description of the site, description of pertinent littoral processes, evaluation of how these processes could affect construction of all-weather moorings, and discussion of design considerations, as well as mitigation measures to minimize potential adverse effects to the physical environment. 19 references, 27 figures, 26 tables.

Ecker, R.M.; Whelan, G.

1983-10-01

425

Anomalous Cold Water Detected along Mid-Atlantic Coast  

NASA Astrophysics Data System (ADS)

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 that the increasing westerly and southerly winds that resulted from approaching cold fronts may have induced upwelling away from and along the mid-Atlantic coast. This, combined with the southward advection of cold sea water from the North Atlantic Ocean, might have caused the anomalous cold water along the coast. The sea surface temperature (SST) observations made by buoy 44014 (0.6 m below sea level) (http://www.ndbc.noaa.gov/) near Virginia Beach (36.61°N, 74.84° W) for the month of July 2003 show a 4°C decrease in SST from 3 to 5 July 2003. A smaller drop of 2-3°C is also found for 24-25 July 2003 (Figure 1a). The east-west (u) and south-north (v) wind components (Figure 1a) observed by buoy 44014 shows a relationship with the observed SST. In general, wind speeds during July 2003 were found to be stronger than those of July 2002.

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

2004-04-01

426

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

427

Near-inertial currents off the east coast of India  

NASA Astrophysics Data System (ADS)

We use data from moorings equipped with Acoustic Doppler Current Profilers (ADCPs) and deployed in the Bay of Bengal off the east coast of India from May 2009 to February 2012 to study the near-inertial currents (NICs) on the continental shelf and slope. The data show that the NICs are much weaker at the shelf break than on the slope. Inertial energy is weak all along the east coast during January-April. It is high during the summer monsoon (May-September) in the northern Bay of Bengal and early during the winter monsoon (October-December) in the southern bay; at locations in the central bay, the inertial energy does not show this seasonality. This difference between the northern and southern bay is due to the seasonality in the occurrence of storms, which tend to occur in the north (south) during the summer (winter) monsoon. Variability across years is evident in the three-year record, with the NICs being weaker during 2010-2011 compared to 2009. Upward phase propagation is evident in the data, indicating downward propagation of energy. During severe cyclones, the data suggest that the strong NICs extend below the thin surface mixed layer in the bay. A comparison of the NICs amplitude with that of the detided (residual) current shows that the NICs make a significant contribution to the observed current on the east-coast slope: the magnitude of the NICs exceeds that of the residual current on the slope in the northern and southern Bay of Bengal on over 10 days in a year.

Mukherjee, A.; Shankar, D.; G Aparna, S.; Amol, P.; Fernando, V.; Fernandes, R.; Khalap, S.; Narayan, S.; Agarvadekar, Y.; Gaonkar, M.; Tari, P.; Kankonkar, A.; Vernekar, S.

2013-03-01

428

History of petroleum exploration in California and the West Coast  

SciTech Connect

California's main oil and gas basins consist of the inland Sacramento and San Joaquin and the Los Angeles, Ventura, and Santa Maria basins adjacent to the coast and extending offshore. The state's total oil production to 1991 is approximately 22.8 billion bbls. Producing formations range in age from basement Jurassic to Pleistocene, but production is mainly from thick multiple sand zones of Miocene and Pliocene age. The first oil discovery was in the eastern Ventura basin in 1875. By the turn of the century, 22 fields, including several giants in the San Joaquin Valley, had been discovered by drilling near oil seepages. The most important event of the 1920s was the discovery of several giant oil fields in the Los Angeles basin, drilled on topographic highs suggestive of underlying anticlines. State production rapidly increased to 850,000 BOPD, or 40% of all US production. The 1930s saw the advent of the reflection seismograph, responsible for the state's largest oil field (Wilmington) in the Lost Angeles basin and the state's largest gas field (Rio Vista) in the Sacramento basin. A number of important fields were found under the San Joaquin Valley floor. Geological thinking in the late 1930s and 1940s resulted in the discovery of large stratigraphic traps in the San Joaquin Valley (e.g., East Coalinga) and at Santa Maria from fractured shale, plus two new small producing basins, the Cuyama and the Salinas. Offshore exploration, consisting of seismic work, ocean-bottom sampling, and coreholing, revealed the presence of a number of anticlines in the Ventura basin, paralleling the Santa Barbara coast. The first offshore discovery was made in 1959 on state lands followed by several major fields on federal lands in the late 1960s. Elsewhere along the West Coast, exploration in Oregon and Washington has yielded only minor gas.

Kilkenny, J.E.

1991-03-01

429

Photocopy of plan (in collection of U.S. Coast Guard Civil ...  

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

Photocopy of plan (in collection of U.S. Coast Guard Civil Engineering Unit Providence, Warwick, RI), U.S. Coast Guard Civil Engineering, third district, Sandy Hook L/B Station, Fort Hancock, NJ, boathouse, plot plan, floor plan, elevation. & section., November 8, 1963 Proposed boathouse wharf B, L.A.S. building shown on wharf A - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

430

Photocopy of plan (in collection of U.S. Coast Guard Civil ...  

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

Photocopy of plan (in collection of U.S. Coast Guard Civil Engineering Unit Providence, Warwick, RI), U.S. Coast Guard Civil Engineering, third district, Sandy Hook L/B Station showing boat basin plan, circa 1945 Detail of western docking structure - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

431

Photocopy of plan (in collection of U.S. Coast Guard Civil ...  

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

Photocopy of plan (in collection of U.S. Coast Guard Civil Engineering Unit Providence, Warwick, RI) U.S. Coast Guard, shore maintenance detachment, New York, mooring facilities for 110 WPB's Station Sandy Hook, Middletown Township, New Jersey, civil demolition of wharf & pier E December 22, 1988 detail of framing and decking wharf B - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

432

Photocopy of plan (in collection of U.S. Coast Guard Civil ...  

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

Photocopy of plan (in collection of U.S. Coast Guard Civil Engineering Unit Providence, Warwick, RI), U.S. Coast Guard Civil Engineering, third district, Sandy Hook L/B Station, Sandy Hook N.J., buoy hoist installation and bldg alterations, January 3, 1952 Details of 4 ton hoist and building, wharf B - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

433

Photocopy of plan (in collection of U.S. Coast Guard Civil ...  

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

Photocopy of plan (in collection of U.S. Coast Guard Civil Engineering Unit Providence, Warwick, RI), U.S. Coast Guard Civil Engineering, third district, marine railway, Sandy Hook Station, Ft. Hancock, Sandy Hook, NJ, repairs, plan sections & framing details, wharf B - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

434

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

435

Salinity observations in a subtropical estuarine system on the Gold Coast, Australia  

Microsoft Academic Search

BENFER, N.P., KING, B.A. and LEMCKERT, C.J., 2007. Salinity observations in a subtropical estuarine system on the Gold Coast, Australia. Journal of Coastal Research, SI 50 (Proceedings of the 9th International Coastal Symposium), 646 - 651. Gold Coast, Australia, ISSN 0749.0208 Saltwater Creek and Coombabah Creek are branches of the Coomera River estuary situated within the subtropical Gold Coast City

N. P. Benfer; B. A. King; C. J. Lemckert

2007-01-01

436

Coastline Direction, Interannual Flow, and the Strong El Nino Currents along Australia's Nearly Zonal Southern Coast  

Microsoft Academic Search

The western equatorial Pacific Ocean El Nino signal leaks through the gappy western equatorial Pacific Ocean boundary to the western and southern coasts of Australia. Ocean Topography Experiment (TOPEX)\\/Poseidon sea level data and coastal tide gauge measurements show that off the northwest coast the low-frequency signal propagates westward as large-scale Rossby waves. However, along the nearly zonal southern coast, particle

JIANKE L IA; NDALLAN J. CLARKE

2004-01-01

437

Crude imports to U. S. Gulf Coast refineries to accelerate  

SciTech Connect

The largest crude oil commodity market in the world--the US Gulf Coast--has experienced an important change in recent years. The decline in domestic production and the increase in imports appear destined to accelerate in the coming decades. Latin American countries will continue to be a major source of US imports, and that the shortfall will have to be made up using Middle Eastern crudes, primarily those from Saudi Arabia and Kuwait. The paper discusses economics, US production, imports, and future trends.

Not Available

1995-02-27

438

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

439

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

440

78 FR 26277 - Magnuson-Stevens Act Provisions; Fisheries Off West Coast States; Biennial Specifications and...  

Federal Register 2010, 2011, 2012, 2013

...Biennial Specifications and Management Measures; Inseason Adjustments AGENCY: National...adjustments to biennial groundfish management measures...announces inseason changes to management measures in the Pacific Coast groundfish...

2013-05-06

441

77 FR 63758 - Magnuson-Stevens Act Provisions; Fisheries Off West Coast States; Biennial Specifications and...  

Federal Register 2010, 2011, 2012, 2013

...Biennial Specifications and Management Measures; Inseason Adjustments AGENCY: National...adjustments to biennial groundfish management measures...announces inseason changes to management measures in the Pacific Coast groundfish...

2012-10-17

442

Detection of enteric viruses in shellfish from the Norwegian coast.  

PubMed

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. PMID:15128518

Myrmel, M; Berg, E M M; Rimstad, E; Grinde, B

2004-05-01

443

3D simulation of tidal creek in Jiangsu coast  

NASA Astrophysics Data System (ADS)

Three-dimensional shape of tidal creek widely distributed in the tidal flat of Jiangsu coast was simulated in this paper. Water lines of tidal creek were extracted from high spatial resolution remotely sensed data and used to derive the centerlines of tidal creek by the method of Thiessen polygon. From downstream to upstream, the profile shape of centerlines presents piecewise linear increase based on the intersect points of tidal branch in one tidal basin. So on basis of known elevation of intersect points, we calculated to gain 3D shape of centerline. And last, using step by step expansion simulated the whole 3D shape of tidal creek. The error analysis showed that the 95% error was between +/- 0.3m. This study realized the 3D simulation of tidal creek. The result demonstrated that from point to line to body (2D- 3D) conversion was realized during this modeling process and 3D simulation method is effective. Due to complex natural condition and the lack of bathymetry data, terrain of tidal creek is difficult to obtain. So through this method we can only use a small number of measure points to easily obtain the 3D shape of tidal creek. It is very useful in topographic survey especially in Jiangsu coast where bathymetry is hard to carry out.

Kang, Yanyan; Ding, Xianrong

444

Dynamics of seagrass meadows on the Swedish Skagerrak coast.  

PubMed

Seagrasses have declined in many places around the world, and the Swedish Skagerrak coast is no exception. Between the 1980s and 2000, the cover of eelgrass (Zostera marina L.) on the Swedish Skagerrak coast decreased about 60%. In the present study, the sites that were investigated in the 1980s and 2000 were revisited (1655 ha) in 2003 and 2004 to investigate long and short term temporal and spatial differences in eelgrass coverage. The distribution of eelgrass was mapped from a small boat using an aquascope and a GPS receiver. No variation in total (about 150 km) or regional (about 20 km) eelgrass cover was found between 2000 and 2004, but there were substantial changes (both losses and gains) in meadow size on a local (less than about 2 km) scale. The results have implications for management of shallow soft bottoms, particularly because it was shown that even though no eelgrass is found in a single survey in a specific area, there could be eelgrass growing there in the following years. PMID:19431937

Nyqvist, Anna; André, Carl; Gullström, Martin; Baden, Susanne Pihl; Aberg, Per

2009-03-01

445

Visible spectroscopy of terrestrial exoplanets with SEE-COAST  

NASA Astrophysics Data System (ADS)

While more than 450 exoplanets have been discovered, mid-infrared photometry and near-infrared (NIR) low-resolution spectroscopy were obtained for a few transiting gazeous planets. Nevertheless, the transit method is limited to close-in planets (?0.1 AU). To study the chemical composition and structure of the atmosphere of wide-separated planets (?1 AU), direct imaging is requested. To date, 12 planet candidates were detected by this method. In a near future (2011-2014), ground-based instruments (SPHERE, GPI, HiCIAO) and the James Webb Space Telescope (JWST) will survey a large sample of gazeous planets around young and M-dwarf stars in the solar neighborhood. To characterize terrestrial planets, extremely good and stable conditions as in space are required. Our team propose the SEE-COAST mission, a 1.5-m space telescope, that aims at visible spectro-polarimetry of mature giant and massive terrestrial planets. Here we briefly recall the principle of this mission and its objectives. We detailed the image analysis used to retrieve the planet spectra and we present the performance of SEE-COAST obtained by numerical simulations.

Maire, A.-L.; Galicher, R.; Boccaletti, A.; Schneider, J.; Baudoz, P.

2010-12-01

446

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

447

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

448

Photocopy of photograph (original in collection of U.S. Coast Guard ...  

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

Photocopy of photograph (original in collection of U.S. Coast Guard Sandy Hook Station, Sandy Hook, NJ), photographer unknown, 1977 detail of ordnance wharf decking - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

449

Photocopy of photograph (original in collection of U.S. Coast Guard ...  

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

Photocopy of photograph (original in collection of U.S. Coast Guard Sandy Hook Station, Sandy Hook, NJ), photographer unknown, 1977 north elevation, ordance wharf deck house - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

450

Photocopy of photograph (original in collection of U.S. Coast Guard ...  

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

Photocopy of photograph (original in collection of U.S. Coast Guard Sandy Hook Station, Sandy Hook, NJ), photographer unknown, 1975 Aerial view looking northeast - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

451

Photocopy of photograph (original in collection of U.S. Coast Guard ...  

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

Photocopy of photograph (original in collection of U.S. Coast Guard Civil Engineering Unit Providence, Warwick, RI) photographer unknown, 1975 Aerial view directly above - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

452

Photocopy of photograph (original in collection of the U.S. Coast ...  

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

Photocopy of photograph (original in collection of the U.S. Coast Guard Sandy Hook Station, Sandy Hook, NJ), photographer unknown, circa 1970 Aerial view looking northeast - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

453

Photocopy of photograph (original in collection of U.S. Coast Guard ...  

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

Photocopy of photograph (original in collection of U.S. Coast Guard Civil Engineering Unit Providence, Warwich, RI), photographer unknown, 1977 view south, showing western docking structure and ordnance wharf - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

454

Photocopy of photograph (original in collection of U.S. Coast Guard ...  

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

Photocopy of photograph (original in collection of U.S. Coast Guard Sandy Hook Station, Sandy Hook, NJ), photographer unknown, circa 1977 aerial view looking north, detail of eastern docking structure travel lift, boat house and station - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

455

Photocopy of photograph (original in collection of U.S. Coast Guard ...  

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

Photocopy of photograph (original in collection of U.S. Coast Guard Sandy Hook Station, Sandy Hook, NJ), photographer unknown, circa 1977 Aerial view looking southeast - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

456

Photocopy of photograph (original in collection of U.S. Coast Guard ...  

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

Photocopy of photograph (original in collection of U.S. Coast Guard Civil Engineering Unit Providence, Warwick, RI) photographer unknown, 1977 Aerial view looking northeast - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

457

Photocopy of photograph (original in collection of U.S. Coast Guard ...  

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

Photocopy of photograph (original in collection of U.S. Coast Guard Sandy Hook Station, Sandy Hook, NJ), photographer unknown, after 1978 aerial view looking northeast - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

458

Photocopy of photograph (original in collection of U.S. Coast Guard ...  

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

Photocopy of photograph (original in collection of U.S. Coast Guard Sandy Hook Station, Sandy Hook, NJ), photographer unknown, 1977 detail of ordnance wharf framing - U.S. Coast Guard Sandy Hook Station, Western Docking Structure, West of intersection of Canfield Road & Hartshorne Drive, Highlands, Monmouth County, NJ

459

Biological basis of biological diversity: physiological adaptations of plants to heterogeneous habitats along a sea coast  

Microsoft Academic Search

To understand the mechanisms of adaptations to heterogeneous habitats along a sea coast, information is needed on the causal character of phenomena in the sequence: environmental factors » adaptive plant features » endogenous control mechanism. Abiotic conditions on the sea coast form a unique environment: sand burial, high temperature, soil salinity, soil fl ooding. Th e responses of coastal plants

Gederts Ievinsh

460

Sea level trend reversal: Land uplift outpaced by sea level rise on Scotland's coast  

Microsoft Academic Search

A widely held belief persists that rising land levels since the latter part of the last glaciation will help safeguard much of the Scottish coast from the impact of global sea level rise. Although the landforms of much of Scotland's coast reflect long-term land uplift, recent investigations show that uplift rates are now modest and are less than rising sea

A. F. Rennie; J. D. Hansom

2011-01-01

461

Paleomagnetism, paleogeographic origins, and uplift history of the Coast Range ophiolite at Mount Diablo, California  

Microsoft Academic Search

Divergent paleogeographic origins have been proposed for the Coast Range ophiolite of western California which are testable using paleomagnetic methods. Paleomagnetic data for Middle Jurassic pillow lavas and diabase sills of the Coast Range ophiolite at Mount Diablo, northern California, indicate that they contain two components of remanent magnetization. The characteristic directions have normal and reversed polarities and apparently are

Jonathan T. Hagstrum; David L. Jones

1998-01-01

462

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

463

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

464

Redescription of Argulus multipocula Barnard, 1955 (Crustacea: Branchiura) collected on the west coast of South Africa.  

PubMed

Argulus multipocula Barnard, 1955 was originally described from a single female found in a littoral sample from the east coast of South Africa. We present a redescription of this species based on light and scanning electron microscope studies of 25 females collected from the southern mullet Liza richardsonii (Smith) on the west coast of South Africa. PMID:15791403

Smit, Nico J; Van As, Liesl L; Van As, Jo G

2005-01-01

465

49 CFR 1520.15 - SSI disclosed by TSA or the Coast Guard.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false SSI disclosed by TSA or the Coast Guard. ...SENSITIVE SECURITY INFORMATION § 1520.15 SSI disclosed by TSA or the Coast Guard. ...552a), and other laws, records containing SSI are not available for public...

2010-10-01

466

49 CFR 1520.15 - SSI disclosed by TSA or the Coast Guard.  

Code of Federal Regulations, 2010 CFR

...2009-10-01 2009-10-01 false SSI disclosed by TSA or the Coast Guard. ...SENSITIVE SECURITY INFORMATION § 1520.15 SSI disclosed by TSA or the Coast Guard. ...552a), and other laws, records containing SSI are not available for public...

2009-10-01

467

EVALUATION OF THE U.S. COAST GUARD'S TANKER INSPECTION PROGRAM: TANKER INSPECTION IMPACTS1  

Microsoft Academic Search

A study mandated by the Oil Pollution Act of 1990 assessed the effectiveness and adequacy of the U.S. Coast Guard's inspection program for oil tankers. The inspection standards study was conducted in two parts. The first part surveyed the range of inspection programs of the Coast Guard, International Maritime Organization, classification societies, and industry to identify significant gaps and\\/or duplicate

Christine S. Meers; Paul Ameer

468

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

Code of Federal Regulations, 2013 CFR

...Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. 100.906 Section 100.906 Navigation and Navigable Waters...Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. (a) Regulated Area. All waters of the Grand River at Waterfront...

2013-07-01

469

Evaluation of a Coast Guard Marine Portable Inspection Unit (MPlU). Phase 3.  

National Technical Information Service (NTIS)

This report presents the results of the third and final phase of an RD project that investigated the use of portable computers as a means to streamline data capture by Coast Guard inspectors in the field. A technology demonstration took place at the Coast...

B. Macesker J. Hannon E. Bernholz

1996-01-01

470

33 CFR 100.114 - Fireworks displays within the First Coast Guard District.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Fireworks displays within the First Coast Guard...LIFE ON NAVIGABLE WATERS § 100.114 Fireworks displays within the First Coast Guard...radius of the launch platform for each fireworks display listed in the following...

2013-07-01

471

U.S. Coast Guard Arctic pollution response research and development  

Microsoft Academic Search

The discovery of oil and gas along the Alaskan coast has led to development and exploration on shore; offshore drilling on the continental shelf is certain to increase rapidly in the near future. The Coast Guard has the legislated responsibility for insuring effective oil spill response in these waters which may be ice-infested during all or part of the year.

M. Fitzpatrick

1985-01-01

472

Changes in Soils and Permafrost as a Function of Distance to the Beaufort Sea Coast, Alaska  

Microsoft Academic Search

Observed increases in the rate of coastal erosion have raised concerns about long term effects along the Beaufort Sea coast, Alaska. The objective of this study is to examine changes in soil and permafrost along three transects from the coastal bluff to 100 meters inland along the Beaufort Sea coast at three sites. The specific objectives are to determine site

L. A. Lynn; C. Ping; T. Jorgenson; D. Fortier; F. Dou

2006-01-01

473

75 FR 38802 - Copano Pipelines/Upper Gulf Coast, L.P.; Notice of Baseline Filing  

Federal Register 2010, 2011, 2012, 2013

...Copano Pipelines/Upper Gulf Coast, L.P.; Notice of Baseline Filing June 28, 2010. Take notice that on June 24...Copano Pipelines/Upper Gulf Coast, L.P. submitted a baseline filing of its Statement of Operating Conditions for...

2010-07-06

474

Shallow gas charged sediments off the Indian west coast: Genesis and distribution  

Microsoft Academic Search

Geophysical and geochemical surveys were carried out off Goa, central west coast of India, to understand the genesis and distribution of shallow gases in marine sediments. Shallow gas charged sediments within the water depths of ?15 to 40m are reported all along the west coast and are characterized by gas masking, high amplitude and reverse polarity reflections in high resolution

A. Mazumdar; A. Peketi; P. Dewangan; F. Badesab; T. Ramprasad; M. V. Ramana; D. J. Patil; A. Dayal

2009-01-01

475

Coast Guard: Legacy Vessels' Declining Conditions Reinforce Need for More Realistic Operational Targets.  

National Technical Information Service (NTIS)

The Coast Guards legacy vessels are either approaching or have exceeded their designed life expectancies. The Coast Guard is replacing these vessels with a more capable fleet; however, cost and management problems have led to delays in the delivery of new...

2012-01-01

476

Human impact on the dynamics of the Russian Northern and Far East Coasts  

Microsoft Academic Search

The northern coasts of Russia, which are composed of dispersive deposits, have poor erosion resistance qualities. In natural conditions such coasts may retreat with a rate of 1 to 5 m a year. Under the influence of human activities this rate can double and even triple. Over the last twenty years the human impact on the natural coastal geosystems has

V. Arkhipov; N. Belova; D. Kuznetsov; S. Ogorodov

2009-01-01

477

Source rock characterization and petroleum systems of Eocene Tyee basin, southern Oregon Coast Range, USA  

Microsoft Academic Search

The hydrocarbon source rock potential of the Eocene units in the southern Oregon Coast Range was evaluated using Rock-Eval pyrolysis. Most Eocene units in southern Oregon Coast Range are thermally immature and contain lean, gas prone Type III kerogen. However, some beds (coals) are sufficiently organic rich to be sources of biogenic and thermogenic methane discovered in numerous seeps. The

In-Chang Ryu

2008-01-01

478

Rock Type and Channel Gradient Structure Salmonid Populations in the Oregon Coast Range  

Microsoft Academic Search

The study objective was to investigate the response of salmonid populations to disturbance in Oregon Coast Range streams in two rock types, basalt and sandstone. Salmonid abundance was estimated in a total of 30 km of channel in 10 Oregon Coast Range streams with similar basin areas (14–20 km). These basins had a range of disturbance caused by timber harvest,

Brendan J. Hicks; James D. Hall

2003-01-01

479

Christine Wilson and the West Coast Nutritional Anthropologists, 1978–1989  

Microsoft Academic Search

This contribution to the Christine Wilson memorial volume is based upon personal recollections of the author and West Coast Nutritional Anthropologist Society documents in his files dated between the period of 1976 through 1989. Christine Wilson was the leading anthropologist on the West Coast who established the WCNA society and helped it flourish. Records of annual meetings and symposia sponsored

Louis Grivetti

2007-01-01

480

46 CFR 42.05-25 - Coast Guard District Commander or District Commander.  

Code of Federal Regulations, 2011 CFR

These terms mean an officer of the Coast Guard designated as such by the Commandant to command all Coast Guard activities within his district. This includes enforcement of load line requirements as described in this subchapter. [CGFR 68-60, 33 FR 10051, July 12,...

2011-10-01

481

Rise of the Ellsworth mountains and parts of the East Antarctic coast observed with GPS  

Microsoft Academic Search

The Ellsworth mountains are rising at 5 mm\\/yr ice loss occurred before 4 kaThere Antarctica is losing ice less quickly than previously estimatedThree places along coast East Antarctica coast are rising at 3–4 +\\/?2 mm\\/yr

Donald F. Argus; Geoffrey Blewitt; W. Richard Peltier; Corné Kreemer

2011-01-01

482

Coast Guard: Observations on the Preparation, Response, and Recovery Missions Related to Hurricane Katrina.  

National Technical Information Service (NTIS)

Hurricane Katrina was one of the largest natural disasters in our nation's history. Significant federal, state, and local resources were mobilized to respond to the Hurricane Katrina disaster, including those of the U.S. Coast Guard. The Coast Guard playe...

2006-01-01

483

Stratigraphic evidence for multiple Holocene advances of Lillooet Glacier, southern Coast Mountains, British Columbia  

Microsoft Academic Search

Holocene lateral moraines in the Coast Mountains of British Columbia are commonly composed of multiple drift units related to several glacier advances. In this paper, we document lateral moraine stratigraphy at Lillooet Glacier in the southern Coast Mountains. Five tills, separated by laterally extensive paleosols and layers of large woody debris, were found in three cross-sectional exposures through the northeast

Alberto V. Reyes; John J. Clague

2004-01-01

484

Seasonal prediction of hurricane activity reaching the coast of the United States  

Microsoft Academic Search

Much of the property damage from natural hazards in the United States is caused by landfalling hurricanes-strong tropical cyclones that reach the coast. For the southeastern Atlantic coast of the US, a statistical method for forecasting the occurrence of landfalling hurricanes for the season ahead has been reported, but the physical mechanisms linking the predictor variables to the frequency of

Mark A. Saunders; Adam S. Lea

2005-01-01

485

DOES VEGETATION STRUCTURE LIMIT THE DISTRIBUTION OF NORTHERN GOSHAWKS IN THE OREGON COAST RANGES?  

Microsoft Academic Search

Aos~mtn.-Northern Goshawks (Arcipitn genfilis) breed in a variet). of forested areas throughout the Pacific Northwest. Nevertheless, they were only first found breeding in the Coast Ranges of Oregon in 1995, despite apparently suitable hahitat and abundant prey. We clocument the rarity of goshawks in the Coast Ranges by reviewing previous and current survey results for nests of goshawks and other

STEPHEN DESTEFANO; JON MCCLOSKEY

486

Wind Power Plants off the Swedish Coasts. Estimate of Generation Costs.  

National Technical Information Service (NTIS)

Two alternative sites for the location of wind power plants are discussed. The first one is off the southern part of the island of Oeland at the east coast of Sweden and the second one off the west coast around 50 km south of Goeteborg. Both these areas a...

R. Hardell

1984-01-01

487

Analysis of U.S. Coast Guard HU-25A Visual and Radar Detection Performance.  

National Technical Information Service (NTIS)

During February 1983, the U.S. Coast Guard R/D Center conducted an experiment in Fort Pierce, FL, to evaluate the visual and forward-looking airborne radar (FLAR) detection performance of a new Coast Guard medium-range surveillance aircraft, the HU-25A. V...

H. G. Ketchen L. Nash G. L. Hover

1983-01-01

488

Vital population statistics of the exploited eel stock on the Swedish west coast  

Microsoft Academic Search

The population dynamics and exploitation of the yellow eel (Anguilla anguilla (L.)) stock on the Swedish west coast were studied. In contrast to a generally observed reduction in the recruitment of glass eels in Europe, including in Swedish waters, there was no indication of a decline in the total eel fishery yields along the Swedish west coast. Long-term records of

H. Svedäng

1999-01-01

489

The macrobenthos in Spartina alterniflora salt marshes of the Wanggang tidal-flat, Jiangsu coast, China  

Microsoft Academic Search

On the Jiangsu coast, eastern China, Spartina alterniflora, which was introduced artificially into the region, is becoming a dominant plant species in the inter-tidal salt marshes. In order to evaluate the environmental and ecological impact of the colonization of S. alterniflora, we carried out investigations into the benthic macrofauna of the Spartina marshes of the Wanggang area, central Jiangsu coast,

Wen-jing Xie; Shu Gao

2009-01-01

490

Hydrographic conditions associated with the relaxation of an upwelling event off the Galician coast (NW Spain)  

Microsoft Academic Search

During the GALICIA-XI cruise from May 10 to May 14, 1991, the relaxation of a previous strong upwelling event took place along the Galician coast caused by a shift in the position of the Azores High. The coldest temperatures and highest nitrate levels were found near the coast corresponding to the advection of subsurface waters, particularly of Eastern North Atlantic

C. G. Castro; F. F. Pérez; X. A. Alvarez-Salgado; G. Rosón; A. F. Ríos

1994-01-01

491

47 CFR 80.108 - Transmission of traffic lists by coast stations.  

Code of Federal Regulations, 2012 CFR

...Telecommunication 5 2012-10-01 2012-10-01 false Transmission of traffic lists by coast stations. 80.108 Section...Procedures Operating Procedures-Land Stations § 80.108 Transmission of traffic lists by coast stations. (a) Each...

2012-10-01

492

47 CFR 80.108 - Transmission of traffic lists by coast stations.  

Code of Federal Regulations, 2011 CFR

...Telecommunication 5 2011-10-01 2011-10-01 false Transmission of traffic lists by coast stations. 80.108 Section...Procedures Operating Procedures-Land Stations § 80.108 Transmission of traffic lists by coast stations. (a) Each...

2011-10-01

493

Gulf Coast High Intensity Drug Trafficking Area. Drug Market Analysis, 2011.  

National Technical Information Service (NTIS)

This is the Gulf Coast High Intensity Drug Trafficking Area (HIDTA) Drug Market Analysis for 2011. The overall drug threat in the Gulf Coast HIDTA region remained fairly consistent from 2009 through 2010. Cocaine distribution and abuse are the principal d...

2011-01-01

494

Taxonomy, natural history and zoogeography of sand beach isopods from the coast of Southern Chile  

Microsoft Academic Search

Seven species of marine isopods were collected on sandy beaches of Southern Chile (from about 37° S until 42° S). From these, Excirolana hirsuticauda Menzies, Excirolana monodi Carvacho, Chaetilia paucidens Menzies, Macrochiridothea setifer Menzies and M. mehuinensis Jaramillo are known only from the Chilean coasts. Another species, Excirolana braziliensis Richardson, is known from other areas of American coasts. One species

E. Jaramillo

1982-01-01

495

Response of benthic foraminifera to heavy metal contamination in marine sediments (Sicilian coasts, Mediterranean Sea)  

Microsoft Academic Search

To examine the suitability of benthic foraminifera and their test deformations as bioindicators of pollution in coastal marine environments, we studied foraminifera and metal concentrations in 72 marine sediment samples, collected from the inner shelf along the Sicilian coast (Gulfs of Palermo and Termini) and on the south-eastern coast of Lampedusa Island. These areas are characterised by different environmental conditions.

Antonio Caruso; Claudia Cosentino; Luigi Tranchina; Maria Brai

2011-01-01

496

Medical Exchange on the Gold Coast during the Seventeenth and Eighteenth Centuries  

Microsoft Academic Search

Historians of the Atlantic slave trade have argued that the inhabitants of the Gold Coast of West Africa participated in a system of cultural and material exchange during the seventeenth and eighteenth centuries that resulted in the diffusion and syncretism of ideas and practices. This position presumes that the cultures of the Gold Coast were transformed by centuries of contact

Jonathan Roberts

2011-01-01

497

Culture contact, continuity, and change on the Gold Coast, AD 1400–1900  

Microsoft Academic Search

This article briefly examines the consequences of the European presence on the Gold Coast, focusing on archaeological, ethnographic, and historical data from the African settlement of Elmina, Ghana. Documentary sources indicate that there was extensive change in sociopolitical institutions, economic relations, and other aspects of Gold Coast society in the centuries following the advent of European trade in the late

Christopher R. Decorse

1992-01-01

498

Quality and freezing qualities of first and second ejaculates collected from endangered Gulf Coast Native rams  

Microsoft Academic Search

The Gulf Coast Native sheep, or Louisiana Native sheep, is an endangered previously feral domestic sheep population of European origin that has been under natural selection pressure for reproductive survival in their transplanted range while roaming in the southern Gulf Coast Region of the United States. This sheep population has an increased natural resistance to internal parasites, breeds year-around and

L. Nel-Themaat; G. D. Harding; J. E. Chandler; J. F. Chenevert; P. Damiani; J. M. Fernandez; P. E. Humes; C. E. Pope; R. A. Godke

2006-01-01

499

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

500

78 FR 40399 - Safety Zone; Fifth Coast Guard District Fireworks Displays, Delaware River; Philadelphia, PA.  

Federal Register 2010, 2011, 2012, 2013

...Safety Zone; Fifth Coast Guard District Fireworks Displays, Delaware River; Philadelphia...date of a safety zone for one recurring fireworks display in the Fifth Coast Guard District...regulation applies to only one recurring fireworks event held in Delaware River in...

2013-07-05