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Page 4166, results 104126 - 104150

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Disappearance of the cascades frog Rana cascadae at the southern end of its range, California, USA
Gary M. Fellers, Charles A. Drost
1993, Biological Conservation (65) 177-181
It has recently become evident that amphibian species in many areas of the world have suffered serious declines. Healthy, seemingly well-protected populations have disappeared for no obvious reason. Data from historic accounts and museum records indicate that the Cascades frog, Rana cascadae, was once abundant at the southern end of its...
Large-scale deformation associated with ridge subduction
E.L. Geist, M. A. Fisher, D.W. Scholl
1993, Geophysical Journal International (115) 344-366
Continuum models are used to investigate the large-scale deformation associated with the subduction of aseismic ridges. Formulated in the horizontal plane using thin viscous sheet theory, these models measure the horizontal transmission of stress through the arc lithosphere accompanying ridge subduction. Modelling was used to compare the Tonga arc...
Observations on sexing and aging ducks using wings
Samuel M. Carney
1993, Report
This report presents information on the development, testing, and limitations of procedures described in the report titled: "Species, age and sex identification of ducks using wing plumage" (Carney 1992). Studies of duck wings begin in 1958 led to the development of most of these procedures (Carney and Geis 1960, Carney...
Cytonuclear genetic architecture in mosquitofish populations and the possible roles of introgressive hybridization
Kim T. Scribner, John C. Avise
1993, Molecular Ecology (2) 139-149
Spatial genetic structure in populations of mosquitofish (Gambusia) sampled throughout the south-eastern United States was characterized using mitochondrial (mt) DNA and allozyme markers. Both sets of data revealed a pronounced genetic discontinuity (along a broad path extending from south-eastern Mississippi to north-eastern Georgia) that corresponds to a recently recognized distinction...
Evaluation of subsurface exploration, sampling, and water-quality-analysis methods at an abandoned wood-preserving plant site at Jackson, Tennessee
W. S. Parks, J. K. Carmichael, J. E. Mirecki
1993, Water-Resources Investigations Report 93-4108
Direct Push Technology (DPT) and a modified-auger method of sampling were used at an abandoned wood-preserving plant site at Jackson, Tennessee, to collect lithologic data and ground-water samples in an area known to be affected by a subsurface creosote plume. The groundwater samples were analyzed using (1) gas chromatography with...
The use of a vegetation index for assessment of the urban heat island effect
K. P. Gallo, A. L. McNab, Thomas R. Karl, Jesslyn F. Brown, J. J. Hood, J.D. Tarpley
1993, International Journal of Remote Sensing (14) 2223-2230
A vegetation index and radiative surface temperature were derived from NOAA-11 Advanced Very High Resolution Radiometer (AVHRR) data for the Seattle, WA region from 28 June through 4 July 1991. The vegetation index and surface temperature values were computed for locations of weather observation stations within the region and compared...
Adult survival of Black-legged Kittiwakes Rissa tridactyla in a Pacific colony
Scott A. Hatch, Bay D. Roberts, Brian S. Fadely
1993, Ibis (135) 247-254
Breeding Black-legged Kittiwakes Rissa tridactyla survived at a mean annual rate of 0.926 in four years at a colony in Alaska. Survival rates observed in sexed males (0.930) and females (0.937) did not differ significantly. The rate of return among nonbreeding Kittiwakes (0.839) was lower than that of known breeders,...
1:100,000-scale Counties of the United States
U.S. Dept of Commerce Bureau of Census
1993, Report
This is a coverage of the county boundaries of the conterminous United States (AK, HI and Puerto Rico are available separately). The lines were extracted from U.S. Census TIGER/line files using an AML program (see 4.), written by Doug Nebert and Mark Negri, running on two Data General 6220 servers....
Response of a 42-storey steel-frame building to the Ms = 7.1 Loma Prieta earthquake
E. Safak
1993, Engineering Structures (15) 403-421
A set of 14 acceleration records was obtained from a 42-storey steel-frame building, the Chevron Building, in San Francisco during the Ms= 7.1">Ms= 7.1 Loma Prieta earthquake of 17 October 1989. Data were analysed using a system identification method based on the discretetime linear filtering, and...
Least tern and piping plover nesting at sand pits in Nebraska
John G. Sidle, E.M. Kirsch
1993, Colonial Waterbirds (16) 139-148
Endangered Least Terns (Sterna antillarum) and threatened Piping Plovers (Charadrius melodus) nest at commercial sand and gravel mining operations (sand pits) along the Platte River system in Nebraska. Sandbar habitat has been disappearing since the early 1900's along the Platte River system, but numbers of sand pits have increased. We...
U.S.-Soviet Collaborative Geological and Geophysical Survey of the Mid-Atlantic Ridge near 31 degrees N, the Petrov Fracture Zone
Kim D. Klitgord, Leonard V. Dmitriev, John F. Casey, Sergei Silantiev, Kevin Johnson
1993, Open-File Report 1994-007
IntroductionIn February 1989, the first formal U.S.-Soviet joint marine geologic-geophysical study in 10 years was undertaken along the Mid-Atlantic Ridge near 31°N on the 12th Cruise of the RN Akademik Boris Petrov of the Vernadsky Institute of Geochemistry (USSR Academy of Sciences, Moscow). This survey was initiated as part of...
Factors influencing the distribution of blackchin tilapia Sarotherodon melanotherodon (Osteichthyes: Cichlidae) in the Indian River system, Florida
Dawn P. Jennings, J.D. Williams
1993, Northeast Gulf Science (12) 111-117
The blackchin tilapia, Sarotherodon melanotheron, was first collected from the Indian River system, in Brevard County, Florida, in 1980. Since its introduction, this species has expanded its range northward along the coast approximately 37 km, to just north of Whites Point, Brevard County, and southward about 68 km to Vero...
Modeling the response of native steelhead to hatchery supplementation programs in an Idaho River
Alan Byrne, T.C. Bjornn, J.D. McIntyre
1993, North American Journal of Fisheries Management (12) 62-78
A life history model was used to predict the response of native steelhead Oncorhynchus mykiss in the Lochsa River, Idaho, to long-term supplementation with hatchery fry and smolts. The four key factors affecting the response of the native fish to a stocking program were (1) the number of native spawners,...
Deep hydraulic fracturing stress measurements in the KTB (Germany) and Cajon Pass (USA) Scientific Drilling Projects: A summary
J. Baumgartner, J. H. Healy, F. H. Rummel, Mark D. Zoback
1993, Conference Paper, 7th ISRM Congress
The determination of in situ stresses along deep vertical profiles was declared a key issue for two scientific deep drilling projects:the German Continental Deep Drilling Project (KTB) situated in northeast Bavaria in an area of complex variscian thrust tectonics andthe CAJON PASS Project, located only about 4 km from...
Precipitation-chemistry measurements from the California Acid Deposition Monitoring Program, 1985-1990
Charles L. Blanchard, Kathy A. Tonnessen
1993, Atmospheric Environment (27) 1755-1763
The configuration of the California Acid Deposition Monitoring Program (CADMP) precipitation network is described and quality assurance results summarized. Comparison of CADMP and the National Acid Deposition Program/National Trends Network (NADP/NTN) data at four parallel sites indicated that mean depth-weighted differences were less than 3 μeq ℓ−1 for all ions,...
Hydrogeology and Migration of Septic-Tank Effluent in the Surficial Aquifer System in the Northern Midlands Area, Palm Beach County, Florida
Wesley L. Miller
1992, Water-Resources Investigations Report 91-4175
The northern Midlands area in Palm Beach County is an area of expected residential growth, but its flat topography, poor drainage, and near-surface marl layers retard rainfall infiltration and cause frequent flooding. Public water supplies and sewer services are not planned for the area, thus, residents must rely on domestic...