Equivalent strike-slip earthquake cycles in half-space and lithosphere-asthenosphere earth models
J.C. Savage
1990, Journal of Geophysical Research (95) 4873-4879
By virtue of the images used in the dislocation solution, the deformation at the free surface produced throughout the earthquake cycle by slippage on a long strike-slip fault in an Earth model consisting of an elastic plate (lithosphere) overlying a viscoelastic half-space (asthenosphere) can be duplicated by prescribed slip on...
Sediment movement along the U.S. east coast continental shelf-II. Modelling suspended sediment concentration and transport rate during storms
V.D. Lyne, B. Butman, W.D. Grant
1990, Continental Shelf Research (10) 429-460
Long-term near-bottom wave and current observations and a one-dimensional sediment transport model are used to calculate the concentration and transport of sediment during winter storms at 60-80 m water depth along the southern flank of Georges Bank and in the Mid-Atlantic Bight. Calculations are presented for five stations, separated by...
Kinetically influenced terms for solute transport affected by heterogeneous and homogeneous classical reactions
Jean M. Bahr
1990, Water Resources Research (26) 21-34
Simulation of transport affected by heterogeneous or homogeneous reversible reactions requires a choice between local equilibrium-based and kinetics-based models. The error associated with the use of equilibrium-based models is equivalent to the error of neglecting certain mathematical terms in the governing kinetics-based transport equations. Identification and evaluation of these kinetically...
Variations of electric resistance and H2 and Rn emissions of concrete blocks under increasing uniaxial compression
C.-Y. King, G. Luo
1990, Pure and Applied Geophysics PAGEOPH (134) 45-56
Electric resistance and emissions of hydrogen and radon isotopes of concrete (which is somewhat similar to fault-zone materials) under increasing uniaxial compression were continuously monitored to check whether they show any pre- and post-failure changes that may correspond to similar changes reported for earthquakes. The results show that all these...
Geochemical evidence of Saharan dust parent material for soils developed on Quaternary limestones of Caribbean and western Atlantic islands
D.R. Muhs, C. A. Bush, K. C. Stewart, T.R. Rowland, R.C. Crittenden
1990, Quaternary Research (33) 157-177
Most previous workers have regarded the insoluble residues of high-purity Quaternary limestones (coral reefs and oolites) as the most important parent material for well-developed, clay-rich soils on Caribbean and western Atlantic islands, but this genetic mechanism requires unreasonable amounts of limestone solution in Quaternary time. Other possible parent materials from...
Vapor-pressure osmometric study of the molecular weight and aggregation tendency of a reference-soil fulvic acid
J.A. Marinsky, M.M. Reddy
1990, Analytica Chimica Acta (232) 123-130
The molecular weight and aggregation tendency of a reference-soil fulvic acid in Armadale horizon Bh were determined by vapor-pressure osmometry using tetrahydrofuran and water as solvents. With tetrahydrofuran, number-average molecular weight values of 767 ?? 34 and 699 ?? 8 daltons were obtained from two separate sets of measurements. Two...
Where to send samples for analysis
R. A. Schnick
Fred P. Meyer, Lee A. Barclay, editor(s)
1990, Resource Publication 177-8
No abstract available....
Producing ducks using wire and electricity
J. T. Lokemoen
1990, South Carolina Waterfowl and Wetlands (4) 8-9
Abstract has not been submitted...
Assessing the visual quality of small islands and shoals in the Thousand Islands Region
M. G. Knutson, D.J. Leopold, R.C. Smardon
J. Kusler, R. Smardon, editor(s)
1990, Book chapter, Wetlands of the Great Lakes: protection and restoration policies; status of the science
Abstract not submitted to date...
Preliminary geologic [map] and section of part of the Canador Peak 15' quadrangle, Grant and Hidalgo Counties, New Mexico
David Carl Hedlund, Tommy L. Finnell
1990, Open-File Report 90-505
No abstract available....
Tracking wildlife by satellite: Current systems and performance
Richard B. Harris, Steven G. Fancy, David C. Douglas, Gerald W. Garner, Steven C. Amstrup, Thomas R. McCabe, Larry F. Pank
1990, Fish and Wildlife Technical Report 30
Since 1984, the U.S. Fish and Wildlife Service has used the Argos Data Collection and Location System (DCLS) and Tiros-N series satellites to monitor movements and activities of 10 species of large mammals in Alaska and the Rocky Mountain region. Reliability of the entire system was generally high. Data were...
Breeding seasons of oceanic birds in a subarctic colony
Scott A. Hatch, Martha A. Hatch
1990, Canadian Journal of Zoology (68) 1664-1679
We studied the breeding seasons of marine birds on the Semidi Islands, western Gulf of Alaska, from 1976 to 1983. Distributions of laying or hatching observed in 11 species during 1–7 years are presented; less detailed information is available on the breeding schedules of three species. The combined laying period...
Components of breeding productivity in a marine bird community: key factors and concordance
Scott A. Hatch, Martha A. Hatch
1990, Canadian Journal of Zoology (68) 1680-1690
We estimated components of annual breeding productivity for eight species of marine birds on the Semidi Islands in the western Gulf of Alaska. Mortality of eggs and young, caused primarily by avian predators, accounted for most of the annual variation in productivity. Failure to produce eggs, clutch size variation, and...
Florida manatees: distribution, geographically referenced data sets, and ecological and behavioral aspects of habitat use
T. J. O'Shea, H. I. Kochman
1990, Florida Marine Research Publications (49) 1-57
Abstract not supplied at this time...
Distribution of annual fishes (Pisces-Rivulidae) in the Rio Unare basin, Venezuela
J.E. Thomerson, D.C. Taphorn, L.G. Nico
1990, BioLlania (7) 33-38
Abstract not supplied at this time...
Mass-marking of otoliths of lake trout sac fry by temperature manipulation
R.A. Bergstedt, R.L. Eshenroder, C. Bowen, J.G. Seelye, J.C. Locke
N. C. Parker, A.E. Giorgi, R.C. Heidenger, D. B. Jester Jr., E.D. Prince, G.A. Winans, editor(s)
1990, Book chapter, Fish-marking techniques
The otoliths of 676,000 sac fry of lake trout Salvelinus namaycush in 1986, and of 1,100,000 in 1987, were marked by daily manipulation of water temperature. The fish were stocked into Lake Huron in the spring. Otolith marks consisted of groups of daily growth rings accentuated into recognizable patterns...
An expert system for prediction of aquatic toxicity of contaminants
James P. Hickey, Andrew J. Aldridge, Dora R. May Passino, Anthony M. Frank
Judith M. Hushon, editor(s)
1990, Book chapter, Expert systems for environmental applications
The National Fisheries Research Center-Great Lakes has developed an interactive computer program in muLISP that runs on an IBM-compatible microcomputer and uses a linear solvation energy relationship (LSER) to predict acute toxicity to four representative aquatic species from the detailed structure of an organic molecule. Using the SMILES formalism for...
Effects of visiting black brant nests on egg and nest survival
James S. Sedinger
1990, Journal of Wildlife Management (54) 437-443
I used 2 methods to evaluate the effect of visiting black brant (Branta bernicla nigricans) nests on survival of whole nests and eggs in a single colony on the Yukon-Kuskokwim Delta, Alaska. The first technique regressed survival of nests or eggs during a time interval against interval length. Departure of...
Conditioning of sandhill cranes during fall migration
Gary L. Krapu, Douglas H. Johnson
1990, Journal of Wildlife Management (54) 234-238
Body mass of adult female and male sandhill cranes (Grus canadensis) increased an average of 17 and 20%, respectively, from early September to late October on staging areas in central North Dakota and varied by year. Increases in body mass averaged 550 and 681 g among female and male G....
Chemical results for bottom material for Department of the Interior irrigation drainage task group studies 1988-1989
T. F. Harms
1990, Open-File Report 90-50
No abstract available....
Preliminary geologic map of the Mohave Mountains area, Mohave County, western Arizona
K. A. Howard, J. E. Nielson, H. G. Wilshire, J. K. Nakata, J. W. Goodge, Steven L. Reneau, Barbara E. John, V. L. Hansen
1990, Open-File Report 90-684
No abstract available....
Sago pondweed (Potamogeton pectinatus L.): A literature review
Harold A. Kantrud
1990, Resource Publication 176
Sago pondweed (Potamogeton pectinatus L.) is a submersed macrophyte of nearly cosmopolitan distribution. The plant is of worldwide importance as a waterfowl food but also can be a nuisance in irrigation canals and recreational areas. The plant reproduces by many different means, depending on habitat and environmental stress. Several genetic...
Survival of Mallard broods in Benton Lake National Wildlife Refuge in north central Montana
Dennis L Orthmeyer, I.J. Ball
1990, Journal of Wildlife Management (54) 62-66
We estimated duckling survival in broods of 31 radio-marked female mallards (Anas platyrhynchos) on Benton Lake National Wildlife Refuge (NWR) in northcentral Montana in 1985 and 1986. Overall survival for the 60-day prefledging period was 0.3951, and 87% of all duckling losses occurred within the first 18 days. Survival through...
Status of exotic fish in the United States
Dawn P. Jennings, J.D. Williams
1990, Research Information Bulletin 90-50
Abstract not supplied at this time...
Use of feather meal in lake trout diets
S. G. Hughes
1990, Research Information Bulletin 26
No abstract available at this time...
