Seismic design and engineering research at the U.S. Geological Survey
1988, Earthquakes & Volcanoes (USGS) (20) 219-223
The Engineering Seismology Element of the USGS Earthquake Hazards Reduction Program is responsible for the coordination and operation of the National Strong Motion Network to collect, process, and disseminate earthquake strong-motion data; and, the development of improved methodologies to estimate and predict earthquake ground motion. Instrumental observations of strong ground...
Hawaii Volcano Observatory 75th anniversary
Thomas L. Wright, Robert W. Decker
1988, Earthquakes & Volcanoes (USGS) (20) 31-35
The 75th anniversary of the founding of the U.S. Geological Survey (USGS) Hawaiian Volcano Observatory (HVO) was celebrated in January 1987. The festivities began on January 9 with the opening in Hilo of a major exhibit at the Wailoa Center on the current work of HVO, its history, and its...
NCIC state affiliates
Water Resources Division, U.S. Geological Survey
1988, Report
In 1974, the U.S. Geological Survey, Department of the Interior, established the National Cartographic Information Center (NCIC) to serve as the public's primary source for information concerning the availability of cartographic, geographic,and remotely sensed data. As part of its program of providing information to the public, NCIC began in 1976...
Hotshots, hotspots, and female preference in the organization of lek mating systems
B. M. Beehler, Mercedes S. Foster
1988, American Naturalist (131) 203-219
We critically review the female-preference and hotspot models, the two most widely accepted recent explanations of lek organization. On the basis of what we believe are the inadequacies of these models-too great a reliance on the presumed acuity of female discrimination, the assumption that females have full freedom of choice...
A high incidence of brown-headed cowbird parasitism of willow flycatchers
James A. Sedgwick, Fritz L. Knopf
1988, The Condor (90) 253-256
Brown-headed Cowbirds (Molothrus ater) parasitize both Willow (Empidonax traillii) and Alder (E. alnorum) flycatchers (Friedmann et al. 1977, Friedmann and Kiff 1985). These two flycatchers were considered a single species until 1973 (AOU 1973), which has masked information about the frequency with which each is parasitized. Whereas several...
Discussion of "Wind function for a sheltered stream"
R.E. Rathburn
1988, Journal of Environmental Engineering (114) 229-231
No abstract available....
The Fox permafrost tunnel: A late Quaternary geologic record in central Alaska
T. D. Hamilton, J. Craig, P.V. Spellmann
1988, GSA Bulletin (100) 948-969
The Fox permafrost tunnel, which penetrates 110 m into frozen sediments of Gold-stream valley, provides a continuous exposure of fossiliferous silt and alluvium above schistose bedrock. Deposition of fluvial gravel was followed by a long interval of loess accretion and permafrost aggradation that was punctuated by episodes of thaw and...
Stratigraphic evidence of Holocene faulting in the mid-continent: The Meers fault, southwestern Oklahoma
Richard F. Madole
1988, GSA Bulletin (100) 392-401
Stratigraphic relations and ten 14C ages show that movement occurred on the Meers fault in late Holocene time. Movement on the fault postdates the Browns Creek Alluvium, which began to be deposited between 14,000 and 13,000 yr B.P., and predates the East Cache Alluvium, which was deposited between 800 and 100...
Voluminous submarine lava flows from Hawaiian volcanoes
Robin T. Holcomb, James G. Moore, Peter W. Lipman, R.H. Belderson
1988, Geology (16) 400-404
The GLORIA long-range sonar imaging system has revealed fields of large lava flows in the Hawaiian Trough east and south of Hawaii in water as deep as 5.5 km. Flows in the most extensive field (110 km long) have erupted from the deep submarine segment of Kilauea's east rift zone....
Large-scale bedforms in boulder gravel produced by giant waves in Hawaii
G. W. Moore, James G. Moore
1988, GSA Special Papers (229) 101-110
Approximately 105,000 yr ago (based on uranium-series dating), waves in a giant wave train swept up to an elevation of about 375 m on the island of Lanai. The waves deposited the Hulopoe Gravel, which near the present shoreline consists of basalt boulders, coral fragments, and calcareous beachrock slabs, and...
Deformation along the northeast side of Blacktail Mountains salient, southwestern Montana
Russell G. Tysdal
1988, GSA Memoirs (171) 203-215
The Blacktail Mountains salient is a convex-eastward area of stacked Laramide-age thrust faults that trend north and dip west at moderate angles. The thrusts occur in Mississippian to Cretaceous strata above a basement of Archean metamorphic rocks. The northern margin of the salient is delimited by the Jake Canyon fault,...
Friction of ice
M. L. Beeman, W.B. Durham, Stephen H. Kirby
1988, Journal of Geophysical Research B: Solid Earth (93) 7625-7633
The frictional strength of ice seems to be well below that for all other rocks. Triaxial testing of cylinders of pure water ice containing a 45° inclined sawcut, at temperatures of 77 ≤ T ≤ 115 K and confining pressures 0.1 ≤ P ≤ 250 MPa, reveals the frictional laws τ = 0.20 σn +...
A paleomagnetic investigation of rocks from the Ohio Range and the Dry Valleys, Transantarctic Mountains, Antarctica
Karl S. Kellogg
1988, New Zealand Journal of Geology and Geophysics (31) 77-85
Two well-defined virtual geomagnetic poles (VGPs) for East Antarctica were obtained from the Middle Jurassic Ferrar Dolerite, sampled from a thick sill on Mt Schopf in the Ohio Range, and from a horizontal sheet intruding Paleozoic granitic rocks at Mt Cerberus in the Dry Valleys. The VGP from the sill...
Sediment deposition in the Late Holocene abyssal Black Sea with climatic and chronological implications
B.J. Hay, M.A. Arthur, Walter E. Dean, E.D. Neff, S. Honjo
1988, Deep Sea Research Part A, Oceanographic Research Papers (38) 1211-1235
The temporal sedimentary patterns in the Late Holocene central eastern and western Black Sea are very similar. The sedimentary history was most visibly affected by the coccolithophorid species Emiliania huxleyi which briefly invaded the Black Sea for the first time (“First Invasion Period”), nearly disappeared again shortly afterwards (“Transition Sapropel”), but returned...
Pyrite formation in the Lower Cretaceous Mowry Shale: Effect of organic matter type and reactive iron content
Hugh R. Davis, Charles W. Byers, Walter E. Dean
1988, American Journal of Science (288) 873-890
Geochemical analysis of the Lower Cretaceous Mowry Shale in Wyoming and Montana shows that organic matter type and reactive iron content limited pyrite formation during early diagenesis. Consequently, direct interpretation of paleosalinity cannot be made from a carbon/sulfur plot. Mowry Shale samples with hydrogen index (HI) less than 150 (mg...
Direct-current resistivity data from 94 sites in northeastern Palm Beach County, Florida
Cathleen J. Peterson
1988, Open-File Report 88-464
Direct-current resistivity data were collected from 94 vertical electric sounding profiles in northeastern Palm Beach County, Florida. Direct-current resistivity data, which may be used to determine the location and thicknesses of shallow, semipermeable marls or locate zones of high chloride concentration, are presented in this report. The resistivity data consist...
Geologic map of the Yellow Hills West Quadrangle, Washoe County, Nevada
J. A. Ach
1988, Miscellaneous Field Studies Map 2028
This 1988 geologic map of the Yellow Hills West quadrangle, Washoe County, Nevada was produced through mapping work conducted in 1985 and 1986....
Ground-water flow beneath levee 35A from conservation area 2B, Broward County, Florida
Leo J. Swayze
1988, Water-Resources Investigations Report 87-4280
Conservation Area 2B is an area of recharge for the surficial aquifer system in Broward County. Water stored in the conservation area provides the hydraulic potential for downward flow to the high permeability zone of the Biscayne aquifer. A 5.64 ft head differential (average for the period of record) between...
Water withdrawals, use, and trends in Florida, 1985
Richard L. Marella
1988, Water-Resources Investigations Report 88-4103
Total water withdrawn for use in Florida for 1985, in million gal/day, was 17,057 of which 6,259, or nearly 37%, was freshwater and 10,798 was saline. The majority of freshwater withdrawn was groundwater (64%) and the majority of saline water withdrawn was surface water (99%). Thermoelectric power generation accounted for...
Effects of two stormwater management methods on the quality of water in the upper Biscayne aquifer at two commercial areas in Dade County, Florida
Donald J. McKenzie, G. A. Irwin
1988, Water-Resources Investigations Report 88-4069
This study is part of a continued effort to assess the effects of urban stormwater recharge on the water quality of the Biscayne aquifer in southeast Florida. In this report, the water-quality effects on shallow ground water resulting from stormwater disposal by exfiltration trench and grassy swale were investigated at...
Major highways: 1987
Water Resources Division, U.S. Geological Survey
1988, Report, National atlas of the United States
No abstract available....
Assessment of the role of bottomland hardwoods in sediment and erosion control
A. Molinas, Gregor T. Auble, C.A. Segelquist, Lee S. Ischinger
1988, Report
Drainage and clearing of bottomland hardwoods have long been recognized by the U.S. Environmental Protection Agency (EPA) and the U.S. Fish and Wildlife Service (Service) as important impacts of Federal water projects in the lower Mississippi River Valley. More recently, the water quality impacts of such projects (e.g., increases in...
Geologic map of Kentucky
Martin C. Noger
1988, Report
No abstract available....
Numerical analysis of Landsat Thematic Mapper images of Antarctica
Olav Orheim, Baerbel K. Lucchitta
1988, Annals of Glaciology (11) 109-120
Landsat-5 Thematic Mapper (TM) data from Dronning [Queen] Maud Land, Antarctica, have been analysed to provide insights into physical properties of the ice sheet. Brightness (at-satellite) temperatures calculated from digital numbers of the thermal band (TM band 6), using state-of-the-art equations and constants (Markham and Barker 1986), are...
Landslide processes in Utah: observation and theory
1988, Bulletin 1842
No abstract available....
