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Page 4157, results 103901 - 103925

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Not all publications have extents, not all extents are completely accurate
Regional crustal structure and tectonics of the Pacific Coastal States: California, Oregon, and Washington
Walter D. Mooney, Craig S. Weaver
1989, GSA Memoirs (172) 129-161
The Pacific Coastal States form a complex geologic environment in which the crust and lithosphere have been continuously reworked. We divide the region tectonically into the southern transform regime of the San Andreas fault and the northern subduction regime, and summarize the geophysical framework with contour maps of crustal thickness,...
Seismic methods for determining earthquake source parameters and lithospheric structure
Walter D. Mooney
1989, GSA Memoirs (172) 11-34
The seismologic methods most commonly used in studies of earthquakes and the structure of the continental lithosphere are reviewed in three main sections: earthquake source parameter determinations, the determination of earth structure using natural sources, and controlled-source seismology. The emphasis in each section is on a description of data, the...
Annotated bibliography of economic literature on wetlands
Aaron J. Douglas
1989, Report
This bibliography is intended for the use of wetlands scientists, policy analysts, and natural resource professionals who have little acquaintance with natural resource economics, and natural resource professionals who have some background in economic analysis and wish to sharpen their appreciation of the specialized methods used to value the nonmarket...
Tectonic features
Philip Burke King, Water Resources Division, U.S. Geological Survey
1989, Report, National atlas of the United States
No abstract available...
Coastal hazards, 1985
Suzette Kimball, Fred J. Anders, Robert Dolan
1989, Report, National Atlas of the United States
No abstract available....
Changes in fish communities following concrete lining of the Coachella Canal, southeastern California
Gordon Mueller, Gary Bryant, Tom Burke
1989, Journal of the Arizona-Nevada Academy of Science (23) 1-6
The fish community of a 3.4-km section of the concrete-lined Coachella Canal, Imperial County, California, was comprised of six species, with an absolute density of 0.039 fish/m2 and estimated biomass of 4.367 g/m2. When compared to studies conducted in the canal prior to lining, or in other unlined areas,...
Risk perceptions and behavioral context: U.S. Forest Service fire management professionals
Jonathan G. Taylor, Edwin H. Carpenter, Hanna J. Cortner, David A. Cleaves
1989, Society & Natural Resources: An International Journal (1) 253-268
Fire managers from the U.S. Forest Service were surveyed to determine which decision factors most strongly influenced their fire‐risk decisions. Safety, the resources at risk, public opinion, and the reliability of information were important influences on these decisions. This research allowed direct comparison between fire managers’ perceptions of factor importance...
Foods and dietary strategies of prairie-nesting ruddy ducks and redheads
Marc C. Woodin, George A. Swanson
1989, The Condor (91) 280-287
Actively feeding Ruddy Ducks (Oxyura jamaicensis) and Redheads (Aythya americana) were collected from North Dakota wetlands during the 1979-1981 breeding seasons. Foods found within esophagi were analyzed on a wet-weight aggregate percent basis. Male and prelaying and laying female Ruddy Ducks consumed >90% invertebrates, primarily chironomids....
Thermal and cementation histories of Permian shelf-edge carbonate rocks in the Nanpanjiang Basin, South China
Robert B. Halley, Judith T. Parrish, Xie Zahn, Hu Wenhai, Peter A. Scholle, Su Zhongrui, Zhang Yirong, Huang Yunming, Li Guangxuan
1989, Book chapter, Petroleum resources of China and related subjects
As of 1984, the Nanpanjiang Basin of South China has had almost no exploration by drilling although oil seeps exist among its margins and producing wells occur in adjacent basins.  however, cooperative studies by petroleum geologists and geochemists of the United States and the People's Republic of China (1982-1984) show...
Erosion and deterioration of the Isles Dernieres Barrier Island Arc, Louisiana, U.S.A.: 1853 to 1988
Randolph A. McBride, Shea Penland, Bruce E. Jaffe, S. Jeffress Williams, Asbury H. Sallenger Jr., Karen A. Westphal
1989, Gulf Coast Association of Geological Societies Transactions (39) 431-444
Using cartographic and aerial photography data from the years 1853, 1890, 1934, 1956, 1978, 1984, and 1988, shoreline change maps of the Isles Dernieres barrier island arc were constructed. These data were accurately superimposed, using a computer mapping system, which removed projection, datum, scale, and other cartographic inconsistencies. Linear, areal,...
Gazetteer of the Antarctic
U.S. Board on Geographic Names, Defense Mapping Agency, Water Resources Division, U.S. Geological Survey, National Science Foundation
1989, Report 89-98
This gazetteer lists antarctic names approved by the United States Board on Geographic Names and by the Secretary of the Interior. The Board is the interagency body created by law to standardize and promulgate geographic names for official purposes. As the official standard for names in Antarctica, the gazetteer assures...
Premigrational movements and behavior of young mallards and wood ducks in north-central Minnesota
R.E. Kirby, L.M. Cowardin, J.R. Tester
1989, Fish and Wildlife Research 5
Movements and behavior of 89 young mallards (Anas platyrhynchos) and 48 young wood ducks (Aix sponsa) were monitored on a 932-km2 study area in north-central Minnesota in late summer and fall, 1972-74, with telemetry, visual observation, and aerial surveys. Initial flights of both species were confined to the natal (brood)...
A comparison of aquatic macrophyte communities in regulated and non-regulated lakes, Voyageurs National Park and Boundary Waters Canoe Area, Minnesota
James E. Meeker, Douglas A. Wilcox
1989, Research/Resources Management MWR-16
The effects of water-level regulation on aquatic macrophyte communities, individual plant species, and potential faunal habitat were investigated in a study of two regulated lakes and an unregulated lake in northern Minnesota. Water levels in Rainy Lake and Namakan Reservoir in Voyageurs National Park are regulated by dams. Natural annual...
An approach to the field study of hydraulic gradients in variable-salinity ground water
J.J. Hickey
1989, Ground Water (27) 531-539
A field study approach is proposed for reliably estimating hydraulic gradients in subregions within a region of variable-salinity ground water. It is based upon Hubbert's concept about the kind of density distributions that are required for ground water to have a potential. The approach consists of dividing a region of...
Water content dependence of trapped air in two soils
David A. Stonestrom, Jacob Rubin
1989, Water Resources Research (25) 1947-1958
An improved air pycnometer method was used to examine the water content dependence of trapped-air volumes in two repacked, nonswelling soils. Trapped-air volumes were determined at a series of hydrostatic equilibrium stages which were attained during water pressure-controlled wetting and drying cycles over a range of 0 to −10 kPa...
Hydrologic effects on water level changes associated with episodic fault creep near Parkfield, California
E.A. Roeloffs, S.S. Burford, F. S. Riley, A.W. Records
1989, Journal of Geophysical Research Solid Earth (94) 12387-12402
As part of the Parkfield, California, earthquake prediction experiment, water level is monitored in a well 460 m from the main trace of the San Andreas fault on Middle Mountain, in the preparation zone of the anticipated Parkfield earthquake. The well configuration allows water level to be monitored in two...
Requirement for a microbial consortium to completely oxidize glucose in Fe(III)- reducing sediments
Derek R. Lovley, Elizabeth J.P. Phillips
1989, Applied and Environmental Microbiology (55) 3234-3236
In various sediments in which Fe(III) reduction was the terminal electron-accepting process, [14C]glucose was fermented to 14C-fatty acids in a manner similar to that observed in methanogenic sediments. These results are consistent with the hypothesis that, in Fe(III)-reducing sediments, fermentable substrates are oxidized to carbon dioxide by the combined activity of...
Arsenic in ground-water under oxidizing conditions, south-west United States
F. N. Robertson
1989, Environmental Geochemistry and Health (11) 171-185
Concentrations of dissolved arsenic in ground-water in alluvial basins of Arizona commonly exceed 50 μg L−1 and reach values as large as 1,300 μg L−1. Arsenic speciation analyses show that arsenic occurs in the fully oxidized state of plus 5 (As+5), most likely in the form of...