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Page 4743, results 118551 - 118575

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Not all publications have extents, not all extents are completely accurate
Concentrations and carbon isotopic compositions of CH4 and CO2 in gas from sediments of the Blake Outer Ridge, Deep Sea Drilling Project Leg 76
E.M. Galimov, Keith A. Kvenvolden
1983, Initial Reports of the D.S.D.P. (76) 403-407
The principal gaseous carbon-containing components identified in the first 400 m of sediment at Deep Sea Drilling Project Site 533, Leg 76, are methane (CH4 ) and carbon dioxide (CO2 ). Below a sub-bottom depth of about 25 m, sedi ment cores commonly contained pockets caused by the expansion of...
Wildlife guilds in Arizona desert habitats
Henry L. Short
1983, Report
This report summarizes information produced from Interagency Agreement No. AA-851-IA1-27 between the Bureau of Land Management (BLM), USDI, and the Fish and Wildlife Service (FWS), USDI. The contract was instrumental in the final development of wildlife guilds for the Hualapai-Aquarius planning area of the BLM in westcentral Arizona, reported...
Relation of concealed faults to water quality and the formation of solution features in the Floridan aquifer, northeastern Florida, U.S.A.
G.W. Leve
1983, Journal of Hydrology (61) 251-264
Geological and hydrological information on the Floridan aquifer in northeastern Florida indicates that isolated occurrences of water having relatively high chloride concentration in the upper part of the aquifer may be associated with buried faults. Water having chloride concentrations of more than 700 mg l−1 occurs in the deeper zone of...
A system for measuring bottom profile, waves and currents in the high-energy nearshore environment
Asbury H. Sallenger Jr., P.C. Howard, C.H. Fletcher III, P.A. Howd
1983, Marine Geology (51) 63-76
A new data-acquisition system capable of measuring waves, currents and the nearshore profile in breaking waves as high as 5 m has been developed and successfully field-tested. Components of the mechanical system are a sled carrying a vertical mast, a double-drum winch placed landward of the beach, and a line...
Hydrostratigraphic subdivisions and fault barriers of the Edwards aquifer, south-central Texas, U.S.A.
R.W. Maclay, T. A. Small
1983, Journal of Hydrology (61) 127-146
The karstic Edwards Limestone within the Balcones Fault Zone of south-central Texas forms a productive confined aquifer that consists predominately of dense carbonate rocks and contains several layers of highly permeable and porous honeycombed rocks that have been produced by the leaching of evaporitic, tidal flat or reefal deposits. Fractures...
Experimental deformation of polycrystalline H2O ice at high pressure and low temperature: Preliminary results
W.B. Durham, H. C. Heard, Stephen H. Kirby
1983, Journal of Geophysical Research B: Solid Earth (88) B377-B392
Interest in the mechanical properties of water ice under the conditions in which it exists in the outer solar system has motivated the development and use of a new high‐pressure, low‐temperature triaxial deformation apparatus. Constant displacement rate tests on 70 samples of pure polycrystalline water ice have been performed at...
Geologic evolution of Hess Rise, central North Pacific Ocean
T. L. Vallier, Walter E. Dean, David K. Rea, Jorn Thiede
1983, GSA Bulletin (94) 1289-1307
Cores from four Deep Sea Drilling Project (DSDP) sites (310, 464, 465, and 466) and seismic-reflection profiles provide data that are used to interpret the geological evolution and paleoenvironments of Hess Rise, a prominent oceanic plateau in the central North Pacific Ocean. Hess Rise apparently formed in the Southern Hemisphere...
The chemical composition of lakes in the north‐central United States
Eville Gorham, Walter E. Dean, J.E. Sanger
1983, Limnology and Oceanography (28) 287-301
Lake waters of the north‐central U.S.A. are classified into five groups, based on increasing specific conductivity and changes in ionic composition from east to west, from Wisconsin through Minnesota to North and South Dakota. The most dilute group of waters has specific conductivities <29 µmhos · cm−1 at 25°C; the most concentrated...
Tectonic evolution of Gulf of Anadyr and formation of Anadyr and Navarin basins
Michael S. Marlow, Alan K. Cooper, Jonathan R. Childs
1983, AAPG Bulletin (67) 646-665
New seismic reflectionand refraction data reveal that Anadyr basin is separated from Navarin basin by Anadyr ridge, a southeast-northwest-trending bedrock high that is characterized by high-amplitude, short-wavelength magnetic anomalies. Anadyr ridge may be an offshore extension of the melange belt underlying the Koryak Range. Sonobuoy refraction data indicate that the...
Wandering terranes in southern Alaska: The Aleutia Microplate and implications for the Bering Sea
Michael S. Marlow, Alan K. Cooper
1983, Journal of Geophysical Research B: Solid Earth (88) 3439-3446
Paleomagnetic and geological data suggest that much of southern Alaska is a collage of tectonostratigraphic terranes which originated in Mesozoic time at paleolatitudes far south of their present position. The time of ‘docking’ of the terranes against cratonic Alaska is critical to defining their amalgamated size and extent during their...
The Galilean satellite geological mapping program
Baerbel K. Lucchitta
1983, Conference Paper
The Galilean Satellite Geological Mapping Program was established to illuminate detailed geologic relations on the four large satellites of Jupiter. The program involves about 40 investigators from various universities, reseach institutes, and government offices in the United Sttes, England, Germany, and Italy. A total of 24 researchers have been assigned...
Population biology of yellow perch in southern Lake Michigan, 1971-79
LaRue Wells, Sherrell C. Jorgenson
1983, Technical Paper 109
This study was based mainly on gill-net collections of yellow perch (Perca flavescens) made during July and August 1971-79, in southern Lake Michigan at Grand Haven, Saugatuck, South Haven, Benton Harbor, and New Buffalo, Michigan; Michigan City and Gary, Indiana; Waukegan, Illinois; and Milwaukee, Wisconsin. Abundance of yellow perch was...
Possible relationships between trichinellosis and abnormal behavior in bears
David E. Worley, Kenneth R. Greer, Daniel A. Palmisciano
1983, Book chapter, International Conference on Bear Research and Management
Data compiled from parasite studies of grizzly bears (Ursus arctos) and black bears (U. americanus) in the Yellowstone and Glacier National Park populations and surrounding areas of Montana and Wyoming during 1969-79 are reviewed with reference to the possible influence of infection with the muscleworm Trichinella sp. on bear behavior....
Grizzly bear: habitat relationships in the Yellowstone area
Bonnie M. Blanchard
1983, Bears: Their Biology and Management (5) 118-123
Habitat use by grizzly bears (Ursus arctos) was studied from 1977 through 1979 in a 20,000-km2 area with Yellowstone National Park in the center. Of 1826 aerial radio locations of 46 instrumental grizzlies, 90% were in timber. Three-fourths of the locations were 100 m or less from an edge between...
Lead accumulation and depression of δ-aminolevulinic acid dehydratase (ALAD) in young birds fed automotive waste oil
W. C. Eastin Jr., David J. Hoffman, C. T. O’Leary
1983, Archives of Environmental Contamination and Toxicology (12) 31-35
The effects of a 3-week dietary exposure to automotive waste crankcase oil (WCO) were examined in 1-week-old mallard (Anas platyrhynchos) ducklings and pheasant (Phasianus colchicus) chicks. Treatment groups consisted of birds exposed to 0.5, 1.5, or 4.5% WCO, to 4.5% clean crankcase oil (CCO), or untreated controls. In both species,...
The role of the USFWS geographic information system in coastal decisionmaking
Robert Ader, Floyd O. Stayner
1983, Conference Paper, Auto-Carto 5: Proceedings: Environmental assessment and resource management
Unprecedented demand on coastal resources in the 1980's has generated a need for valid information and analyses to support wise management of the coastal zone. The National Coastal Ecosystems Team of the U.S. Fish and Wildlife Service recently implemented a geographic information system to enhance its ability to analyze and...
Aspects of food finding by wintering Bald Eagles
Susan K. Knight, Richard L. Knight
1983, The Auk (100) 477-484
We examined three aspects of food location by Bald Eagles (Haliaeetus leucocephalus) wintering along the Nooksack River, Washington. First, eagles used intra- and interspecific local enhancement to locate food. Second, the time that eagles spent aerially searching for food, as indicated by the percentage of eagles flying or soaring, was...
Use of pine nuts by grizzly and black bears in the Yellowstone area
Katherine C. Kendall
1983, Bears: Their Biology and Management (5) 166-173
The large seeds (pine nuts) of whitebark pine are commonly eaten in the spring (March-May) and fall (September-November) by grizzly and black bears in Yellowstone National Park and adjacent areas (Craighead and Craighead 1972, Blanchard 1978, Mealey 1980) and western Montana (Tisch 1961; J. Sumner and J. J. Craighead, unpubl....