Robert D. Jarrett, John E. Costa
1986, Professional Paper 1369
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Publication Extents
Not all publications have extents, not all extents are completely accurateA. J. Crone, S.T. Harding, D. P. Russ, K. M. Shedlock
1986, Miscellaneous Field Studies Map 1863
The tectonic setting and the earthquake hazards of the New Madrid seismic zone in the northern Mississippi embayment have been the subject of intensive study the past several years as part of the Earthquake Hazard Reduction Program of the USGS (U.S. Geological Survey). These efforts have improved our knowledge of...
C. W. Stover, B.G. Reagor, S. T. Algermissen
1986, Miscellaneous Field Studies Map 1852
This map is one of a series of seismicity maps produced by the U. S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000. This map shows only those earthquakes with epicenters located within the boundaries of Arizona, even though earthquakes...
Brian S. Cade
1986, FWS/OBS 82/10.118
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the brown thrasher (Toxostoma rufum). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0 (optimum...
Jack T. Dugan
1986, Hydrologic Atlas 678
Certain physical characteristics of soils, including permeability, available water capacity, thickness, and topographic position, have a definite effect on the hydrology of an area. They control the rate at which precipitation infiltrates or is transmitted through the soil, and thus they have a significant role in determining the rates both...
Floyd Gray, Robert C. Jachens, Robert J. Miller, Robert L. Turner, Daniel H. Knepper, James A. Pitkin, William J. Keith, John Mariano, Stephanie L. Jones, Stanley L. Korzeb
1986, Bulletin 1737-F
At the request of the U.S. Bureau of Land Management, approximately 113,500 acres of the Warm Springs Wilderness Study Area (AZ-020-028/029) were evaluated for mineral resources and mineral resource potential. In this report, the area studied is referred to as the 'wilderness study area' or 'study area'; any reference to...
A.J. Heinitz
1986, Open-File Report 85-151
Record flood-peak discharges occurred in June and July, 1982, in southwestern, south-central, and east-central Iowa. The record flood peaks resulted from rainfalls of 6 to 8 inches on soil saturated from persistent moderate to heavy rainfalls that began in May and continued through mid July. May was the wettest across Iowa...
J.S. Pallister
1986, Open-File Report 86-565
A newly recognized Tertiary dike complex and comagmatic volcanic rocks exposed on the central Saudi Arabian coastal plain record early stages of magmatism related to Red Sea rifting. Intrusive and stratigraphic relationships, and new potassium-argon dating indicate episodic magmatism from about 30 Ma to the present. Additional stratigraphic and radiometric...
Jayne Fifield Knott, Julio C. Olimpio
1986, Water Supply Paper 2297
Estimation of the average annual rate of ground-water recharge to sand and gravel aquifers using elevated tritium concentrations in ground water is an alternative to traditional steady-state and water-balance recharge-rate methods. The concept of the tritium tracer method is that the average annual rate of ground-water recharge over a period...
Robert E. Kidd, C. R. Bossong
1986, Open-File Report 85-678
No abstract available....
M.R. Krasnow
1986, Open-File Report 87-6
Fred Liscum
1986, Open-File Report 86-487
Hydro!ogic investigations of urban watersheds in Texas were begun by the U.S. Geological Survey in 1954. Studies are now in progress in the Austin and Houston areas, and have been completed in the Dallas-Fort Worth and San Antonio areas. The U.S. Geological Survey, in cooperation with the city of Houston, began...
G.K. Miller
1986, Open-File Report 86-269
Stephen P. Garabedian
1986, Water Supply Paper 2278
A nonlinear, least-squares regression technique for the estimation of ground-water flow model parameters was applied to the regional aquifer underlying the eastern Snake River Plain, Idaho. The technique uses a computer program to simulate two-dimensional, steady-state ground-water flow. Hydrologic data for the 1980 water year were used to calculate recharge...
Simon M. Cargill, Steven B. Green, editor(s)
1986, Circular 980
Modern geological surveys pursue a wide spectrum of research activities in the earth sciences. From the beginning, however, one of the core tasks of any national geological survey has been the assessment and evaluation of its nation's mineral and fuel resources. The methods by which such assessments are carried out...
A.H. Lachenbruch
1986, Open-File Report 86-508
J. R. Herring, P.J. Modreski
1986, Open-File Report 87-22
Arthur Grantz, Dennis M. Mann, Steven D. May
1986, Open-File Report 86-405
The U.S. Geological Survey (USGS) collected approximately 2,652 km of 24-channel seismic-reflection data in early September, 1980, over the continental shelf in the eastern Chukchi Sea (Fig. 1). The profiles were collected on the USGS Research Vessel S.P. Lee. The seismic energy source consisted of a tuned array of five...
R. M. Bloyd, P. B. Daddow, P.R. Jordon, H. W. Lowham
1986, Water-Resources Investigations Report 86-4329
The effects of surface coal mining on the surface- and groundwater systems in a 5,400 sq mi area in the Powder River Basin, Wyoming, that includes 20 major coal mines were evaluated using three approaches: A surface water model, a landscape-stability analysis, and a groundwater model. A surface water model...
L. D. Arihood
1986, Open-File Report 86-309
Hydrologic data were collected by the U.S. Geological Survey from 20 small watersheds in the surface-mining areas of the eastern United States from 1980 through 1984 as part of the Survey1 s coal-hydrology program. Each data set includes sediment-concentration, streamflow, and precipitation data collected at 5- or 15-minute intervals. One...
Freeman L. Andrews, Terry L. Schertz
1986, Water-Resources Investigations Report 85-4181
Significant upward trends in dissolved-solids concentrations were detected with the Seasonal Kendall Test for trends at three stations in the upper basin during the study period. The increases exceeded 270 milligrams per liter per year at two stations and 165 milligrams per liter per year at the third station. The composition...
G.W. Day, E. P. Welsch, K. C. Watts Jr., J. C. Gray
1986, Open-File Report 86-422
No abstract available....
James E. Elliott, Jeffrey S. Loen, K. K. Wise, Michael J. Blaskowski
1986, Open-File Report 86-632
The Butte quadrangle, in the Northern Rocky Mountains of southwestern Montana, has had a long, productive, and colorful mining history. Butte, the city from which the quadrangle takes its name, is located in the most famous mining district of the quadrangle. This district, the Butte or Summit Valley district, has...
R. D. Borcherdt, editor(s)
1986, Open-File Report 86-181
A ten-station array of broad-band digital instrumentation (GEOS) was deployed by the U. S. Geological Survey with partial support provided by Electric Power Research Institute to record the aftershock sequence of the moderate (mb ~ 4.9) earthquake that occurred on January 31, 1986 (16:46:43 UTC) near Painesville, Ohio. The occurrence...
Water Resources Division, U.S. Geological Survey
1986, Open-File Report 86-4
No abstract available. ...