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...
Soviet prediction of a major earthquake
D.W. Simpson
1979, Earthquake Information Bulletin (USGS) (11) 234-235
On November 1, 1978, a magnitude 7 earthquake occurred north of the Pamir Mountains near the Tadjiskistan-Kirghizia border, 150 kilometers east of Garm in Soviet Central Asia. Although the earthquake was felt in Tashkent, Dushanbe, and the Fergana Valley, the epicentral area was uninhabited at that time of year, and...
Records of prehistoric earthquakes in sedimentary deposits in lakes
J. Sims
Henry Spall, editor(s)
1979, Earthquake Information Bulletin (USGS) (11) 228-233
Historic records of earthquakes are too short to allow a true assessment of their recurrence intervals. Methods are needed, therefore, that will enable the seismicity of an area to be evaluated beyond the limit of historic records. One place where a record of ancient seismic activity might be preserved is in...
Immersion vaccination of sockeye salmon (Oncorhynchus nerka) with two pathogenic strains of Vibrio anguillarum
R. W. Gould, R. Antipa, D.F. Amend
1979, Journal of the Fisheries Research Board of Canada (36) 222-225
Sockeye salmon (Oncorhynchus nerka) were immersion-vaccinated in suspensions containing 5 × 107, 5 × 106, 5 × 105, or 5 × 104 bacteria/mL of bivalent or monovalent, formalin-killedVibrio anguillarum, Types I and II. The fish were split into two lots and held for 54 d. At that time one lot was challenged with living, virulent V. anguillarum, Type I, and one with...
Determination of arsenic in geological materials by electrothermal atomic-absorption spectrometry after hydride generation
R. F. Sanzolone, T. T. Chao, E. P. Welsch
1979, Analytica Chimica Acta (108) 357-361
Rock and soil samples are decomposed with HClO4—HNO3; after further treatment, arsine is generated and absorbed in a dilute silver nitrate solution. Aliquots of this solution are injected into a carbon rod atomizer. Down to 1 ppm As in samples can be determined and there are no significant interferences, even...
Mortality of experimentally descaled smolts of coho salmon (Oncorhynchus kisutch) in fresh and salt water
Gerald R. Bouck, Stanley D. Smith
1979, Transactions of the American Fisheries Society (108) 67-69
Removal of slime from 25% of the body caused no deaths among smolts of coho salmon in fresh water or in seawater (28‰). Removal of slime and scales from the same percentage of body area caused no deaths in fresh water, but 75% mortality within 10 days in seawater. The...
New host and geographical records for the leech Acanthobdella peledina Grube 1851 (Hirudinea, Acanthobdellidae)
A. K. Hauck, Michael J. Fallon, Carl V. Burger
1979, Journal of Parasitology (65) 989-989
A total of four leeches (Acanthobdella peledina), parasitizing four specimens of the least cisco (Coregonus sardinella), were found during July and August 1977. The hosts and parasites were collected during a fishery survey by the U.S. Fish and Wildlife Service in the North Slope waters of Naval Petroleum Reserve, Alaska....
Potentials and limits for the use of ozone as a fish disease control agent
Gary A. Wedemeyer, Nancy C. Nelson, T. Yasutake
1979, Ozone: Science and Engineering (1) 295-318
Ozone and chlorine inactivation curves were determined in three types of freshwater at 20 C for the destruction of the fish pathogens Aeromonas salmonicida the etiologic agent of furunculosis, and Yersinia ruckeri the enteric redmouth bacterium (ERM). Ozone and chlorine inactivation curves were also obtained in the same water types at 10 C for...
Earthquakes; January-February, 1979
W. J. Person
1979, Earthquake Information Bulletin (USGS) (11) 143-147
The first major earthquake (magnitude 7.0 to 7.9) of the year struck in southeastern Alaska in a sparsely populated area on February 28. On January 16, Iran experienced the first destructive earthquake of the year causing a number of casualties and considerable damage. Peru was hit by a destructive earthquake...
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...
Random crustal magnetization and its effect on coherence of short-wavelength marine magnetic anomalies
R.J. Blakely
1979, Earth and Planetary Science Letters (46) 43-48
Recent studies of DSDP samples from layer 2A of oceanic basement have found complex magnetic stratigraphies that seem incompatible with the frequent existence of linear short-wavelength anomalies caused by palaeomagnetic field behavior. Statistical models are developed for the lateral variation of...
Correlation of lunar far-side magnetized regions with ringed impact basins
K.A. Anderson, D.E. Wilhelms
1979, Earth and Planetary Science Letters (46) 107-112
By the method of electron reflection, we have identified seven well-defined magnetized regions in the equatorial belt of the lunar far side sampled by the Apollo 16 Particles and Fields subsatellite. Most of these surface magnetic fields lie within one basin...
Coccolith and silicoflagellate stratigraphy, northern mid-Atlantic Ridge and Reykjanes Ridge, Deep Sea Drilling Project Leg 49
David Bukry
1979, Initial reports of the Deep Sea Drilling Project (49) 551-581
Leg 49 of the Deep Sea Drilling Project recovered 192 cores at eight drilling sites, 407 through 414 (Figure 1). Light-microscope techniques were used to study the cocoliths, silicoflagellates, and sponge spicules of 120 samples from these cores. The cocolith zonation of the samples follows Bukry (1975a), and is summarized...
A “natural and legitimate ambition . . . .”
S. J. Pyne
1979, Earthquake Information Bulletin (USGS) (11) 53-57
Grove Karl Gilbert (1843-1918) was Chief Geologist for the U.S Geological Survey from 1889 to 1892. Still working for the Survey, he was in Berkeley when the 1906 earthquake struck San Francisco. Immediately on waking, he began to study the motion of the light fixture hanging from the ceiling, trying...
Lignite drilling during 1978 in western North Dakota: Adams, Billings, Bowman, Burke, Golden Valley, Hettinger, McKenzie, McLean, and Slope Counties
Water Resources Division, U.S. Geological Survey, North Dakota Geological Survey
1979, Open-File Report 79-1051
No abstract available....
Water resources data for Maryland and Delaware, water year 1977
Water Resources Division, U.S. Geological Survey
1978, Water Data Report MD-DE-77-1
No abstract available. ...
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...
Age of the last major scabland flood of the Columbia Plateau in eastern Washington
D. R. Mullineaux, R.E. Wilcox, W.F. Ebaugh, R. Fryxell, M. Rubin
1978, Quaternary Research (10) 171-180
Pumice layers of set S from Mount St. Helens can be correlated with certain ash beds associated with young flood deposits of the channeled scabland. The correlation points to an age of about 13,000 14C yr B.P. for the last major flood to have crossed the scabland. Until recently, the...
Developing a state water plan: Ground-water conditions in Utah, spring of 1978
Joseph S. Gates, W.N. Jibson, L. R. Herbert, R. W. Mower, A. C. Razem, R.M. Cordova, V.L. Jensen, M. D. ReMillard, D. C. Emett, C.T. Sumison, P.A. Carroll, M.J. DeGrand, G. W. Sandberg
1978, Cooperative Investigations Report 17
This report is the fifteenth in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, prepared cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources, provide data to enable interested parties to keep abreast of changing ground-water conditions.This report, like...
New ages on intrusive rocks and altered zones in the Alaska Peninsula: A section in The United States Geological Survey in Alaska: Accomplishments during 1977
Frederic H. Wilson, Robert L. Detterman, Miles L. Silberman
1978, Circular 772-B
Preliminary potassium-argon dating of intrusive rocks and altered zones in the Chignik and Sutwik Island quadrangles of the Alaska Peninsula seems to indicate at least three and possibly four Tertiary ages of alteration and mineralization....
Behavior of different segments of the San Andreas fault
1978, Earthquake Information Bulletin (USGS) (10) 126-130
No abstract available....
Earthquake history of Washington
1978, Earthquake Information Bulletin (USGS) (10) 28-33
No abstract available....
Ground-water resources and geology of Columbia County, Wisconsin
C.A. Harr, L. C. Trotta, Ronald G. Borman
1978, Wisconsin Geological & Natural History Survey Information Circular 37
The increasing need for water of good Quality in Columbia County, caused by a steadily increasing population, can be met from the sand-and-gravel and sandstone aquifers. As much as 15 gallons per minute can be obtained from wells almost everywhere. Yields of more than 1,000 gallons per minute are available...
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...
In situ analysis of coal using a 252CF-Ge(Li) borehole sonde
F. E. Senftle, A.B. Tanner, P. W. Philbin, G. R. Boynton, C.W. Schram
1978, Mining Engineering (30) 666-674
