J. A. Howell
1989, Report
No abstract available at this time...
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Publication Extents
Not all publications have extents, not all extents are completely accurateM. R. Miller
1989, Report
No abstract available at this time...
A.K. Siwicki, D. P. Anderson, O. W. Dixon
1989, Veterinary Immunology and Immunopathology (23) 195-200
J.E. Lovich
1989, 'Elepaio (49) 86-87
No abstract available....
Roger A. Bergstedt, Robert O’Gorman
1989, Transactions of the American Fisheries Society (118) 687-692
Alewives Alosa pseudoharengus in the Great Lakes are thought to avoid extreme cold in winter by moving to deep water where the temperature is usually highest because of inverse thermal stratification. Information collected in Lake Ontario during autumn and winter 1981–1984 with an echo sounder and bottom and midwater trawls indicated that...
C. L. Douglas, D.L. Jenkins, C.N. Warren
1989, Book chapter, Early human occupation in the arid West: 12,000-7,000 B.P. Anthropological Papers
No abstract available at this time...
M.E. Markiw
1989, Diseases of Aquatic Organisms (6) 7-10
No abstract available. ...
K. A. Miller, J. A. Estes
1989, Botanica Marina (32) 535-538
T. V. V. King, Roger N. Clark
1989, Journal of Geophysical Research: Solid Earth (94) 13997-14008
The present laboratory study using high‐resolution reflectance spectroscopy (0.25–2.7 μm) focuses on two primary phyllosilicate groups, serpentines and chlorites. The results show that it is possible to spectrally distinguish between isochemical end‐members of the Mg‐rich serpentine group (chrysotile, antigorite, and lizardite) and to recognize spectral variations in chlorites as a...
D.F. Goerlitz, B.J. Franks
1989, Ground Water Monitoring Review (9) 122-129
Appraisal of ground water contaminated by organic substances raises problems of difficult sample collection and timely chemical analysis. High-performance liquid chromatography was evaluated for on-site determination of specific organic contaminants in ground water samples and was used at three study sites. Organic solutes were determined directly in water samples, with...
F. D. Hostettler, J. B. Rapp, K.A. Kvenvolden, N L. Samuel
1989, Geochimica et Cosmochimica Acta (53) 1563-1576
Sediment samples from nearshore sites in south San Francisco Bay and from streams flowing into that section of the Bay have been characterized in terms of their content of biogenic and anthropogenic molecular marker compounds. The distributions, input sources, and applicability of these compounds in determining sediment movement are discussed....
Michael J. Kunk, G. A. Izett, R. A. Haugerud, J. F. Sutter
1989, Science (244) 1565-1568
The mineralogy of shocked mineral and lithic grains in the Cretaceous-Tertiary (K-T) boundary claystone worldwide is most consistent with a bolide impact on a continent. Both the concentrations and sizes of these shocked grains are greatest in the western interior of North America. These data suggest that the Manson impact...
H. J. Moore, B. M. Jakosky
1989, Icarus (81) 164-184
Important problems that confront future scientific exploration of Mars include the physical properties of Martian surface materials and the geologic processes that formed the materials. The design of landing spacecraft, roving vehicles, and sampling devices and the selection of landing sites, vehicle traverses, and sample sites will be, in part,...
M.J.S. Johnston
1989, Physics of the Earth and Planetary Interiors (57) 47-63
Synchronized measurements of geomagnetic field have been recorded along 800 km of the San Andreas fault and in the Long Valley caldera since 1974, and during eruptions on Mount St. Helens since 1980. For shorter periods of time, continuous measurements of geoelectric field measurements have been made on Mount St....
R. E. Kayen, W. C. Schwab, H.J. Lee, M.E. Torresan, J.R. Hein, P. J. Quinterno, L.A. Levin
1989, Deep Sea Research Part A, Oceanographic Research Papers (36) 1817-1839
Mass movement and erosion have been identified on the pelagic sediment cap of Horizon Guyot, a seamount in the Mid-Pacific Mountains. Trends in the size, shape and preservation of bedforms and sediment textural trends on the pelagic cap indicate that bottom-current-generated sediment transport direction is upslope. Slumping of the sediment...
N.S. Simon
1989, Estuarine, Coastal and Shelf Science (28) 531-547
During periods of sediment resuspension, desorption of ammonium from sediment solids can be the major pathway for enriching the water column with the ammonium that is produced by bacterial degradation of organic matter in the bottom material. This hyopthesis is based on a three-year study of diffusive flux in the...
G.H. Leavesley
1989, Hydrological Sciences Journal (34) 617-634
Problems include: a) definition of the spatial and temporal distribution of model input; b) measurement or estimation of snow accumulation, snowmelt, and runoff process parameters for a range of applications and scales; and c) development of accurate short term and long term snowmelt runoff forecasts. Procedures being investigated to solve...
M.E. Wood, J. T. Kelley, D. F. Belknap
1989, Estuaries (12) 237-246
One year's measurements of surficial sedimentation rates (1986-1987) for 26 Maine marsh sites were made over marker horizons of brick dust. Observed sediment accumulation rates, from 0 to 13 mm yr-1, were compared with marsh morphology, local relative sea-level rise rate, mean tidal range, and ice rafting activity. Marshes with...
Z. E. Peterman, W. Day
1989, Geology (17) 1089-1092
Late Archean granitic plutons (∼2700 to 2665 Ma; U-Pb zircon) of the Superior structural province are cut by a variety of brittle discontinuities, including joints, fractures, and faults, the latter of which show evidence of cataclasis and meter to tens of meters displacements....
B.E. Cole
1989, Estuarine, Coastal and Shelf Science (28) 103-115
Primary productivity in the water column was measured 14 times between April 1985 and April 1986 at three sites in Tomales Bay, California, USA The conditions at these three stations encompassed the range of hydrographic conditions, phytoplankton biomass, phytoplankton community composition, and turbidity typical of this coastal embayment. Linear regression...
B.L. Gulson, A. L. Meier, S. E. Church, K.J. Mizon
1989, Journal of Geochemical Exploration (32) 311-313
Thermal ionization mass spectrometry (TI-MS) has long been the method of choice for Pb-isotope determinations. More recently, however, inductively coupled plasma mass spectrometry (ICP-MS) has been used to determine Pb-isotope ratios for mineral exploration. The ICP-MS technique, although not as precise...
Diane E. Moore, R. Summers, J.D. Byerlee
1989, Journal of Structural Geology (11) 329-342
The run products of a series of triaxial friction experiments on an illite-rich gouge have been examined petrographically to study the relationship between textural development and sliding mode. The samples show a complete range of textures, from ones in which the...
S. S. Levy, J. R. O’Neil
1989, Chemical Geology (76) 321-326
The locally zeolitized Topopah Spring Member of the Paintbrush Tuff (13 Myr.), Yucca Mountain, Nevada, U.S.A., is part of a thick sequence of zeolitized pyroclastic units. Most of the zeolitized units are nonwelded tuffs that were altered during low-temperature diagenesis, but the distribution and textural setting of zeolite (heulandite-clinoptilolite) and...
John V. Skinner
1989, Conference Paper
Since 1939, the date of the Project's inception, the team has operated under the direction of two lead agencies - the U.S. Geological Survey and U.S. Army Corps of Engineers. The supporting agencies are the Agricultural Research Service, Bureau of Reclamation, U.S. Forest Service, Bureau of Land Management, Federal Highway...
M.E. Jennings, E.N. Cookmeyer
1989, Conference Paper
Work is underway on a planned microcomputer program that will include about 1500 prediction equations for 214 flood regions of the United States and Puerto Rico. The program will include calculation routines for rural and urban flood frequency and hydrograph characteristics and will have links to a detention-pond routing model....