Tufted Puffins nesting in estuarine habitat
Robert E. Gill Jr., Gerald A. Sanger
1979, The Auk (96) 792-794
The Tufted Puffin (Lunda cirrhata) apparently has the most extensive breeding distribution of any North Pacific seabird, extending in the western North Pacific from Hokkaido to the north Chukotsk Peninsula on the Chukchi Sea, and in North America from Cape Lisburne on the Chukchi Sea, south to the Farallon Islands...
Modeling of rock friction 2. Simulation of preseismic slip
James H. Dieterich
1979, Conference Paper, Journal of Geophysical Research B: Solid Earth
The constitutive relations developed in the companion paper are used to model detailed observations of preseismic slip and the onset of unstable slip in biaxial laboratory experiments. The simulations employ a deterministic plane strain finite element model to represent the interactions both within the sliding blocks and between the blocks...
Modeling of rock friction 1. Experimental results and constitutive equations
James H. Dieterich
1979, Conference Paper, Journal of Geophysical Research B: Solid Earth
Direct shear experiments on ground surfaces of a granodiorite from Raymond, California, at normal stresses of ??6 MPa demonstrate that competing time, displacement, and velocity effects control rock friction. It is proposed that the strength of the population of points of contacts between sliding surfaces determines frictional strength and that...
Computers at the Albuquerque Seismological Laboratory
J. Hoffman
1979, Earthquake Information Bulletin (USGS) (11) 138-140
The Worldwide Standardized Seismograph Network (WWSSN) is managed by the U.S Geological Survey in Albuquerque, N. Mex. It consists of a global network of seismographs housed in seismic observatories throughout the world. An important recent addition to this network are the Seismic Research Observatories (SRO) which combine a borehole seismometer...
Medication inhibits tolerance to seawater in coho salmon smolts
Gerald R. Bouck, David A. Johnson
1979, Transactions of the American Fisheries Society (108) 63-66
Applications of 10 therapeutic and two anesthetic agents to healthy smolts of coho salmon (Oncorhynchus kisutch) by conventional methods were followed by two different posttreatment circumstances. In condition I, fish were treated and then transferred directly to 28‰ seawater for 10 days; in condition II, fish were treated and held...
Earthquake predictions using seismic velocity ratios
R. W. Sherburne
1979, Earthquake Information Bulletin (USGS) (11) 18-21
Since the beginning of modern seismology, seismologists have contemplated predicting earthquakes. The usefulness of earthquake predictions to the reduction of human and economic losses and the value of long-range earthquake prediction to planning is obvious. Not as clear are the long-range economic and social impacts of earthquake prediction to a...
Earthquakes; March-April, 1979
W. J. Person
1979, Earthquake Information Bulletin (USGS) (11) 183-186
This was a moderately active period, seismically speaking. Three major earthquakes having magnitudes (M) ranging from 7.0 to 7.9 to only one major quake during the first 2 months of the year. Major earthquakes struck in Mexico, Indonesia, and Yugoslavia. The Yugoslavian earthquake caused considerable damage and loss of life. In...
The Parkfield prediction experiment
A. Lindh, P. Evans, P. Harsh, G. Buhr
1979, Earthquake Information Bulletin (USGS) (11) 209-213
The San Andreas fault is part of the boundary between the Pacific and North American crustal plates. In California, movements of about 3 centimeters per year are currently taking place along the fault, although plat tectonic models suggest a faster rate of 5 cm/yr may be the average over a...
Numerical simulation of steady state three-dimensional groundwater flow near lakes
Thomas C. Winter
1978, Water Resources Research (14) 245-254
Numerical simulation of three-dimensional groundwater flow near lakes shows that the continuity of the boundary encompassing the local groundwater flow system associated with a lake is the key to understanding the interaction of a lake with the groundwater system. The continuity of the boundary can be determined by the presence...
Geologic framework of lower Cook Inlet, Alaska
Michael A. Fisher, Leslie B. Magoon
1978, American Association of Petroleum Geologists Bulletin (62) 373-402
Three seismic reflectors are present throughout the lower Cook Inlet basin and can be correlated with onshore geologic features. The reflections come from unconformities at the base of the Tertiary sequence, at the base of Upper Cretaceous rocks, and near the base of Upper Jurassic strata.A contour map of the...
Morphology of chasma walls, Mars
Baerbel K. Lucchitta
1978, Journal of Research of the U.S. Geological Survey (6) 651-662
The landforms developed on the walls of the Valles Marineris system of chasmas are of three major types, which are locally transitional. The most common type is composed of steep spurs and gullies. The dominant process in the formation or modification of this type appears to be the downslope movement...
Water resources inventory of Connecticut Part 8: Quinnipiac River basin
David L. Mazzaferro, Elinor H. Handman, Mendall P. Thomas
1978, Connecticut Water Resources Bulletin 27
The Quinnipiac River basin area in southcentral Connecticut covers 363 square miles, and includes all drainage basins that enter Long Island Sound from the Branford to the Wepawaug Rivers. Its population in 1970 was estimated at 535,000. Precipitation averages 47 inches per year and provides an abundant supply of water....
Workshop on Deposit Modeling
M.V. Hansen, J.M. Botbol, O.R. Eckstrand, G. Gaal, M. Maignan, Th. Pantazis, R. Sinding-Larsen
1978, Journal of the International Association for Mathematical Geology (10) 519-531
[No abstract available]...
Howling at two Minnesota wolf pack summer homesites
F.H. Harrington, L.D. Mech
1978, Canadian Journal of Zoology (56) 2024-2028
Howling sessions were monitored at two Minnesota wolf pack homesites for 2255 h between 29 April and 3 August 1973. All sessions recorded occurred from dusk through early morning, with an evening peak for one pack. Within a night, multiple sessions were grouped temporally, most occurring within an hour of...
Histopathologic effects of dietary cadmium on kidneys and testes of mallard ducks
Donald H. White, M. T. Finley, J. F. Ferrell
1978, Journal of Toxicology and Environmental Health (4) 551-558
Mallard ducks fed 2, 20, or 200 ppm cadmium chloride were sacrificed at 30, 60, and 90 d. No mortality occurred during the study and body weights remained unchanged. Kidney weights of the 200-ppm group were significantly greater after 60 and 90 d than those of controls; also, testis weights...
Artificial insemination for breeding non-domestic birds
G.F. Gee, S.A. Temple
P.F. Watson, editor(s)
1978, Book chapter, Artificial Breeding of Non-Domestic Animals.
Captive breeding of non-domestic birds has increased dramatically in this century, and production of young often exceeds that of the same number of birds in their native habitat. However, when infertility is a problem, artificial insemination can be a useful method to improve production. Artificial insemination programs with non-domestic birds...
Significance of age relations above and below upper jurassic ophiolite in the Geysers-Clear Lake region, California
R. J. McLaughlin, E.A. Pessagno Jr.
1978, Journal of Research of the U.S. Geological Survey (6) 715-726
In The Geysers-Clear Lake area of northern California, a fragmented Upper Jurassic ophiolite overlain depositionally by the Great Valley sequence is juxtaposed over deformed and metomorphosed rocks of the Franciscan assemblage along the Coast Range thrust. The basal strata of the Great Valley sequence consist of thick breccias of mafic...
A reexamination of the Pennsylvanian trace fossil Olivellites
Ellis L. Yochelson, David E. Schindel
1978, Journal of Research of the U.S. Geological Survey (6) 789-796
The original interpretation of Olivellites plummeri Fenton and Fenton as the trace of an infaunal gastropod, is reconsidered and rejected. The original slab bearing several examples of O. plummeri has been reexamined and reillustrated. The slab came from the type-locality of O. plummeri in Eastland County, Tex., and is a shallow...
Application of four input-output models for nutrients in Lake Okeechobee, Florida
Ronald L. Miller
1978, Journal of Research of the U.S. Geological Survey (6) 821-828
R. A. Vollenweider's (1975) nonconservative model described concentrations of nitrogen and phosphorus for 1969-70 in Lake Okeechobee, Fla., better than the models of F. Biffi in 1963, R. H. Rainey in 1967, and R. Piontelli and V. Tonolli in 1964. Vollenweider's model predicted concentrations of 1.4 milligrams per liter of...
Conductive heat flows in research drill holes in thermal areas of Yellowstone National Park, Wyoming
Donald E. White
1978, Journal of Research of the U.S. Geological Survey (6) 765-774
In convection systems with boiling springs, geysers, fumaroles, and other thermal features, the modes of heat flow become increasingly complex as a single liquid phase at depth rises into the near-surface environment where heat flows by convection of liquid and vapor and by conduction in high thermal gradients. This paper...
Solubility of highly soluble salts in aqueous media - Part 1, NaCl, KCl, CaCl2, Na2SO4, and K2SO4 solubilities to 100°C
Robert W. Potter II, Michael A. Clynne
1978, Journal of Research of the U.S. Geological Survey (6) 701-705
A modified visual method for determining the solubility of highly soluble salts in aqueous media up to 100° C is presented. The solubilities of NaCl, KCl, CaCl2, Na2SO4, and K2SO4 were determined up to 100° C. The tabulated experimental data and the fitted equations describing the data indicate that the...
Upper Devonian radiolarians separated from chert of the Ford Lake Shale, Alaska
Brian K. Holdsworth, D. L. Jones, C. Allison
1978, Journal of Research of the U.S. Geological Survey (6) 775-788
Leaching of black bedded chert from the Ford Lake Shale, Kandik Basin, Alaska, with dilute hydrofluoric acid resulted in the complete separation of moderately well preserved radiolarians. Preliminary study of an assemblage obtained from the lower half of the formation revealed six to eight forms apparently identical to specimens previously...
The geochemical nature of the Archean Ancient Gneiss Complex and Granodiorite Suite, Swaziland: A preliminary study
D.R. Hunter, F. Barker, Hugh T. Millard Jr.
1978, Precambrian Research (7) 105-127
The Ancient Gneiss Complex (AGC) of Swaziland, an Archean gray gneiss complex, lies southeast and south of the Barberton greenstone belt and includes the most structurally complex and highly metamorphosed portions of the eastern Kaapvaal craton. The AGC is not precisely dated but apparently is older than 3.4 Ga. The...
A sediment-dispersal model for the South Texas continental shelf, northwest Gulf of Mexico
G. L. Shideler
1978, Marine Geology (26) 289-313
Textural-distribution patterns of sea-floor sediments on the South Texas continental shelf between Matagorda Bay and the U.S.-Mexico international boundary were evaluated as part of a regional environmental-studies program. Sediment textural gradients support a conceptual model for the regional sediment-dispersal system, which is characterized by both net offshore transport and net...
Distribution and character of upper Mesozoic subduction complexes along the west coast of North America
D. L. Jones, M.C. Blake Jr., E. H. Bailey, R. J. McLaughlin
1978, Tectonophysics (47) 207-222
Structurally complex sequences of sedimentary, volcanic, and intrusive igneous rocks characterize a nearly continuous narrow band along the Pacific coast of North America from Baja California, Mexico to southern Alaska. They occur in two modes: (1) as complexly folded but coherent sequences of graywacke and argillite that locally exhibit blueschist-grade...
