Assessment of gray whale feeding grounds and sea floor interaction in the northeastern Bering Sea
C.H. Nelson, K.R. Johnson, John H. Barber
1983, Open-File Report 83-727
A dense ampeliscid amphipod community in Chirikov Basin and around St. Lawrence Island in the northeastern Bering Sea has been outlined by summarizing biological studies, analyzing bioturbation in sediment samples, and examining sea floor photos and videotapes. The amphipod population is associated with a homogeneous, relict fine-grained sand body 0.10-1.5...
Mineral deposit grade-tonnage models
Dan L. Mosier
Donald A. Singer, editor(s)
1983, Open-File Report 83-623
Hydrogeologic evaluation of selected stratified-drift deposits in Connecticut
S. J. Grady, E. H. Handman
1983, Water-Resources Investigations Report 83-4010
Test borings at 28 sites and seismic-refraction profiles at 16 sites provide data on the saturated thickness and grain-size characteristics of stratified-drift deposits in five areas of Connecticut. These data, together with information on the areal extent of the deposits and their proximity to sources of induced recharge, can be...
A Flood model for the Tug Fork basin, Kentucky, Virginia, and West Virginia
W.H. Doyle, P.B. Curwick, K.M. Flynn
1983, Water-Resources Investigations Report 83-4014
Summary of workshops concerning regional seismic source zones of parts of the conterminous United States, convened by the U.S. Geological Survey, 1979-1980, Golden, Colorado
P.C. Thenhaus, F. A. McKeown, R.C. Bucknam, D. C. Ross, R.E. Anderson, W. P. Irwin, D. P. Russ, W.H. Diment
Paul C. Thenhaus, editor(s)
1983, Circular 898
Workshops were convened by the U.S. Geological Survey to obtain the latest information and concepts relative to defining seismic source zones for five regions of the United States. The zones, with some modifications, have been used in preparation of new national probabilistic ground motion hazard maps by the U.S. Geological...
Ground-water resources in the Hood Basin, Oregon
Stephen J. Grady
1983, Water-Resources Investigations Report 81-1108
The Hood Basin, an area of 1,035 square miles in north-central Oregon, includes the drainage basins of all tributaries of the Columbia River between Eagle Creek and Fifteenmile Creek. The physical characteristics and climate of the basin are diverse. The Wasco subarea, in the eastern half of the basin, has...
Petroleum and mineral resources of Antarctica
Karel Kovar
John Charles Behrendt, editor(s)
1983, Circular 909
No known petroleum or mineral resources occur in Antarctica. The data on these subjects have been collected, mainly since the IGY (International Geophysical Year), 1957-58, as a part of other research carried out by geologists and geophysicists from a number of countries. Specific resource-related studies have not been made. Wright...
Estimation of nonpoint sources of phosphorus for lakes in the Puget Sound region, Washington
Robert J. Gilliom
1983, Open-File Report 82-161
Control of eutrophication of lakes in watersheds undergoing development is facilitated by estimates of the amounts of phosphorus (P) that reach the lakes from areas under various types of land use. Using a mass-balance model, the writer calculated P loadings from present-day P concentrations measured in lake water and from...
Front-tracking model for convective transport in flowing ground water
S. P. Garabedian, Leonard F. Konikow
1983, Water-Resources Investigations Report 83-4034
A finite-difference numerical model that simulates the convective transport of water or tracer particles through porous media is described. It can be applied to one- or two-dimensional problems involving either steady-state or transient flow. The model tracks representative water or tracer particles, initially located along specified lines, as they move...
A simple Bouguer gravity anomaly map of southwestern Saudi Arabia and an initial interpretation
M. E. Gettings
1983, Open-File Report 83-789
Approximately 2,200 gravity stations on a 10-km2 grid were used to construct a simple Bouguer gravity anomaly map at 1:2,000,000 scale along a 150-km-wide by 850-km-long strip of the Arabian Peninsula from Sanam, southwest of Ar Riyad, through the Farasan Islands and including offshore islands, the coastal plain, and the...
Water-level changes in the high plains regional aquifer, northwestern Oklahoma, predevelopment to 1980
J.S. Havens
1983, Water-Resources Investigations Report 83-4073
During 1978, the U.S. Geological Survey began a 5-year study of the High Plains regional aquifer system to provide hydrologic information for evaluation of the effects of long-term development of the aquifer and to develop computer models for prediction of aquifer response to alternative changes in ground-water management (Weeks, 1978)....
Hydrologic evaluation of proposed ground-water withdrawals in Muleshoe Flat near Wheatland, southeastern Wyoming
D.T. Hoxie
1983, Water-Resources Investigations Report 83-4150
The hydrologic effects of proposed irrigation with groundwater of 8,320 acres of land in Muleshoe Flat, a 34 sq mi area in west-central Platte County, Wyoming, were assessed. Results generated by a digital groundwater flow model indicate that, at the end of a 40-yr period, groundwater level declines of more...
Reservoir-development impacts on surface-water quantity and quality in the Yampa River basin, Colorado and Wyoming
D. Briane Adams, Daniel P. Bauer, Robert H. Dale, Timothy Doak Steele
1983, Water-Resources Investigations Report 81-30
Development of coal resources and associated economy is accelerating in the Yampa River basin in northwestern Colorado and south-central Wyoming. Increased use of the water resources of the area will have a direct impact on their quantity and quality. As part of 18 surface-water projects, 35 reservoirs have been proposed...
Preliminary map of limonitic hydrothermal alteration for portions of the Needles 1° x 2° quadrangle, Arizona and California
Gary L. Raines
1983, Open-File Report 83-421
Portions of the Needles quadrangle have been designated by the Bureau of Land Management as potential wilderness areas and are being evaluated by a multidisciplinary team to determine the mineral-resource potential. As a part of this study Landsat images are being used to map the generalized distribution of limonitic materials...
Magnitude and frequency of flooding on small urban watersheds in the Tampa Bay area, west-central Florida
M. A. Lopez, W. M. Woodham
1983, Water-Resources Investigations Report 82-42
Hydrologic data collected on nine small urban watersheds in the Tampa Bay area of west-central Florida and a method for estimating peak discharges in the study area are described. The watersheds have mixed land use and range in size from 0.34 to 3.45 square miles. Watershed soils, land use, and...
Habitat Suitability Index Models: Longnose dace
Elizabeth A. Edwards, Hiram Li, Carl B. Schreck
1983, FWS/OBS 82/10.33
A review and synthesis of existing information were used to develop riverine and lacustrine habitat models for longnose dace (Rhinichthys cataractae), a freshwater fish. The models are scaled to produce an index of habitat suitability between 0 (unsuitable habitat) to 1 (optimally suitable habitat) for freshwater, marine and estuarine areas...
Reconnaissance geochemical survey of Al Jurdhawiyah and Wadi al Jarir quadrangles, sheets 25/42 D and 25/42 C, Kingdom of Saudia Arabia
Rashid M. Samater
1983, Open-File Report 83-299
A reconnaissance wadi-sediment geochemical survey was conducted in the Al Jurdhawiyah (sheet 28/42 D) and Wadi al Jarir (sheet 2G/42 C) quadrangles in order to identify anomalies potentially related to mineralized rock. Sieved bulk-sediment fractions and pan concentrates were created from the original samples collected from wadis in the two...
Habitat Suitability Index Models: Bigmouth buffalo
Elizabeth A. Edwards
1983, FWS/OBS 82/10.34
A review and synthesis of existing information were used to develop riverine and lacustrine habitat models for Bigmouth buffalo (Ictiobus cyprinellus), a freshwater fish. The models are scaled to produce an indices of habitat suitability between 0 (unsuitable habitat) and 1 (optimally suitable habitat) for freshwater areas of the...
Habitat Suitability Index Models: Black-capped chickadee
Richard L. Schroeder
1983, FWS/OBS 82/10.37
A review and synthesis of existing information was used to develop a habitat model for the black-capped chickadee (Parus atricapillus). The model is scaled to produce an index of habitat suitability between 0 (unsuitable habitat) and 1 (optimally suitable habitat) for areas of the continental United States. Habitat suitability indexes...
Gravity survey of Dixie Valley, west-central Nevada
Donald H. Schaefer
1983, Open-File Report 82-111
Dixie Valley, a northeast-trending structural trough typical of valleys in the Basin and Range Province, is filled with a maximum of about 10,000 feet of alluvial and lacustrine deposits , as estimated from residual-gravity measurements obtained in this study. On the basis of gravity measurements at 300 stations on nine...
Habitat Suitability Index Models: Downy woodpecker
Richard L. Schroeder
1983, FWS/OBS 82/10.38
A review and synthesis of existing information was used to develop a habitat model for the downy woodpecker (Picoides eubescens). The model is scaled to produce an index of habitat suitability between 0 (unsuitable habitat) and 1 (optimally suitable habitat) for areas of the continental United States. Habitat suitability indexes...
Habitat Suitability Index Models: Southern red-backed vole (western United States)
Arthur W. Allen
1983, FWS/OBS 82/10.42
Habitat preferences of the southern red-backed vole (Clethrionomys gapperi) are described in this publication, which is one of a series of Habitat Suitability Index (HSI) models. A review and synthesis of the literature is followed by development of a model of the species-habitat requirements of the southern red-backed vole. Habitat suitability...
Habitat Suitability Index Models: Baird's sparrow
Patrick J. Sousa, W. Neil McDonal
1983, FWS/OBS 82/10.44
A review and synthesis of existing information were used to develop a habitat model for Baird's sparrow. The model is scaled to produce an index of suitability between 0 (unsuitable habitat) to 1 (optimally suitable habitat) for Baird's sparrow habitat in the Northern Great Plains. Habitat suitability indices are designed...
Habitat Suitability Index Models: Williamson's sapsucker
Patrick J. Sousa
1983, FWS/OBS 82/10.47
The Williamson's sapsucker (Sphyrapicus thyroideus) " ... inhabits middle elevation pine forests and high elevation spruce-fir forests" (Crockett 1975:111) as well as aspen stands (Hansley 1977; Hansley, pers. comm.) throughout its range in the western Uni ted States. The Rocky Mounta in subspecies (S. t. nataliae) exhibits altitudinal and latitudinal...
Mineral resource potential map of the Sugarloaf Roadless Area, San Bernardino County, California
Robert E. Powell, Jonathan C. Matti, Brett F. Cox, Howard W. Oliver, Alexander Wagini, Harry W. Campbell
1983, Miscellaneous Field Studies Map 1606-A
Geologic, geochemical, and geophysical investigations and a survey of mines and prospects indicate that the Sugaloaf Roadless Area contains subeconomic graphite and magnesian marble resources. Parts of the area have a low potential for the occurrence of additional low-grade graphite resources, but there is no potential for additional magnesian marble...
