Charles Darwin and the 1835 earthquake at Concepcion, Chile
H. Spall
1981, Earthquake Information Bulletin (USGS) (13) 13-17
On a stormy night in October 1836, H.M.S Beagle hove to and dropped anchor at Falmouth, a remote harbor in southwest England. Charles Darwin, the ship's naturalist, came ashore to take the mail coach to Shrewsbury. This was inauspicious end to an epic 5-year voyage around the coast of South...
Earthquakes, September-October 1980
W. J. Person
1981, Earthquake Information Bulletin (USGS) (13) 105-106
There were two major (magnitudes 7.0-7.9) earthquakes during this reporting period; a magnitude (M) 7.3 in Algeria where many people were killed or injured and extensive damage occurred, and an M=7.2 in the Loyalty Islands region of the South Pacific. Japan was struck by a damaging earthquake on September 24,...
Earthquakes, November-December 1980
W. J. Person
1981, Earthquake Information Bulletin (USGS) (13) 150-152
The great San Francisco earthquake
R. D. Nason
1981, Earthquake Information Bulletin (USGS) (13) 40-42
Seventy-five years ago on April 18, 1906, the most devastating earthquake in United States history occurred in northern California. This earthquake, which occurred at 5:2 in the morning just as the dawn was breaking, came from rupture of the San Andreas fault from San Juan Bautista (near Hollister) northqard for...
News from the observatories; the Royal Observatory, Hong Kong
G. Bell
1981, Earthquake Information Bulletin (USGS) (13) 145-149
Etna erupts again; a VEST report of the March 1981 eruption of Mount Etna, Sicily
J. E. Guest, C.R.J. Kilburn, R. M. C. Lopes, J.B. Murray, H. Pinkerton, T.J.O Sanderson, S.C. Scott
1981, Earthquake Information Bulletin (USGS) (13) 134-139
A visit to Tangshan, China
J.M. Gere, H.C. Shah
1981, Earthquake Information Bulletin (USGS) (13) 4-11
Earthquakes, January-February 1981
W. J. Person
1981, Earthquake Information Bulletin (USGS) (13) 191-194
The first 2 months of the year were somewhat active, seismically speaking. Two major earthquakes (magnitude 7.0-7.9) occurred during the month of January, a magnitude 7.1 Japan on the 8th and a magntidue 7.1 in the Aleutian Islands on the 30th. Fatalities and damage were experienced in Irian Jaya (formerly...
Seismology program; California Division of Mines and Geology
R. W. Sherburne
1981, Earthquake Information Bulletin (USGS) (13) 65-68
The year 1980 marked the centennial of the California Division of Mines and Geology (CDMG) and a decade of the Division's involvement in seismology. Factors which contributed to the formation of a Seismology Group within CDMG included increased concerns for environmental and earthquake safety, interest in earthquake prediction, the 1971...
The U.S. Earthquake Prediction Program
R. L. Wesson, J.R. Filson
1981, Earthquake Information Bulletin (USGS) (13) 164-174
Following on from the concepts of plate tectonics, the earth sciences are now embarking on a challenging course- the time prediction of geologic phenomena. Earthquake prediction is an outstanding example of this. However, earthquake prediction is not the only scientific goal. The destructive power of a large earthquake requires that...
The eastern front of the Sierra Nevada; prone to earthquakes and volcanic eruption
C.D. Rinehart, W. C. Smith
1981, Earthquake Information Bulletin (USGS) (13) 216-224
On Sunday morning, May 25, 1980, the weather at Mammoth Lakes, Calif., was sunny and brisk. Suddenly, just before 9:33 a.m, the world became a jarring, lurching, unstable place. Along the front of the Sierra Nevada, the muffled thunder of rockfalls and avalanches prolonged the confusion of sound and motion...
Preliminary observations on the Campania-Basilicata, Italy, earthquake of November 23, 1980
J. L. Stratta, L. E. Escalente, E.L. Krinitzsky, U. Morelli
1981, Earthquake Information Bulletin (USGS) (13) 18-22
The authors comprised a field study team sent by the Earthquake Engineering Research Institue (EERI) and the National Research Council (NRC) of the United States to make a reconnaissance study of the earthquake in southern Italy. The team members were selected for their experience and expertise and served the EERI...
Earthquakes, May-June 1981
W. J. Person
1981, Earthquake Information Bulletin (USGS) (13) 225-227
The months of May and June were somewhat quiet, seismically speaking. There was one major earthquake (7.0-7.9) off the west coast of South Island, New Zealand. The most destructive earthquake during this reporting period was in southern Iran on June 11 which caused fatalities and extensive damage. Peru also experienced...
Strains of infectious hematopoietic necrosis (IHN) virus may be identified by structural protein differences
J.C. Leong, Ya Li Hsu, H. Mark Engelking, Daniel M. Mulcahy
D. P. Anderson, editor(s)
1981, Conference Paper, Fish biologics: Serodiagnostics and vaccines (Developments in biological standardization, volume 49)
The development of an effective vaccine to infectious hematopoietic necrosis virus (IHNV) in fish requires a knowledge of the virus serotypes in nature. At least two serotypes were found among three IHNV strains (12). Attempts in our laboratory to extend this study with additional virus strains by classical immunological techniques...
Improved population estimates through the use of auxiliary information
Douglas H. Johnson
C.J. Ralph, J. M. Scott, editor(s)
1981, Book chapter, Estimating numbers of terrestrial birds. Cooper Ornithological Society Studies in Avian Biology
When estimating the size of a population of birds, the investigator may have, in addition to an estimator based on a statistical sample, information on one of several auxiliary variables, such as: (1) estimates of the population made on previous occasions, (2) measures of habitat variables associated with the size...
Reduction of matrix interferences in furnace atomic absorption with the L'vov Platform
M. L. Kaiser, S. R. Koirtyohann, E. J. Hinderberger, Howard E. Taylor
1981, Spectrochimica Acta Part B: Atomic Spectroscopy (36) 773-783
Use of a modified L'vov Platform and ammonium phosphate as a matrix modifier greatly reduced matrix interferences in a commercial Massmann-type atomic absorption furnace. Platforms were readily fabricated from furnace tubes and, once positioned in the furnace, caused no inconvenience in operation. Two volatile elements (Pb, Cd), two of intermediate...
Boulder deposits and the retreat of mountain slopes, or ' gully gravure' revisited
H. H. Mills
1981, Journal of Geology (89) 649-660
Observations on mountains composed chiefly of shale and capped with Tuscarora Sandstone in the Valley and Ridge province of southwest Virginia suggest that slopes retreat by a process similar to but different from Bryan's (1940) "gully gravure." The process appears to operate as follows: Bouldery alluvium protects the floors of...
Cell lines used for the production of viral fish disease agents
B. C. Lidgerding
D. P. Anderson, W. Hennessen, editor(s)
1981, Book chapter, Proceedings of the International Symposium on Fish Biologics: Serodiagnostics and Vaccines, National Fish Health Workshop
No abstract available at this time...
Notes on sedimentation activities calendar year 1980
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1981, Report
This report is a digest of information furnished by Federal agencies conducting sedimentation investigations on work in progress or planned, important findings, new methods, new publications, laboratory and other research activities, and other pertinent information. The material has been organized by major drainage regions in the conterminous United States, Alaska,...
1980 Water resources program in Oregon
U.S. Geological Survey
1981, Report
The Water Resources Division investigates and reports on the occurrence, quantity, quality, distribution, and movement of surface and underground water. Work of the Division is described in detail later in this report....
K-Ar ages on intrusive and altered zones in the Chignik and Sutwik Island quadrangles: A section in The United States Geological Survey in Alaska: Accomplishments during 1979
Frederic H. Wilson
1981, Report, The United States Geological Survey in Alaska: Accomplishments during 1979 (Circular 823-B)
Continued K-Ar dating of intrusive rocks and hydrothermal alteration zones in the Chignik and Sutwik Island quadrangles of the Alaska Peninsula, supplemental to that by Wilson, Detterman, and Silberman (1978) and Wilson (1978), has refined our knowledge of the ages of the igneous rocks and clarified relations between altered zones...
The partitioning of copper among selected phases of geologic media of two porphyry copper districts, Puerto Rico
R. E. Learned, T. T. Chao, R. F. Sanzolone
1981, Journal of Geochemical Exploration (15) 563-581
In experiments designed to determine the manner in which copper is partitioned among selected phases that constitute geologic media, we have applied the five-step sequential extraction procedure of Chao and Theobald to the analysis of drill core, soils, and stream sediments of the Rio Vivi and Rio Tanama porphyry copper...
Simulation model of Skeletonema costatum population dynamics in northern San Francisco Bay, California
J. E. Cloern, R. T. Cheng
1981, Estuarine, Coastal and Shelf Science (12) 83-100
A pseudo-two-dimensional model is developed to simulate population dynamics of one dominant phytoplankton species (Skeletonema costatum) in northern San Francisco Bay. The model is formulated around a conceptualization of this estuary as two distinct but coupled subsystems—a deep (10–20 m)...
Potential for geophysical experiments in large scale tests
James H. Dieterich
1981, Geophysical Research Letters (8) 653-656
Potential research applications for large-specimen geophysical experiments include measurements of scale dependence of physical parameters and examination of interactions with heterogeneities, especially flaws such as cracks. In addition, increased specimen size provides opportunities for improved recording resolution and greater control of experimental variables. Large-scale experiments using...
Some regional costs of a synthetic fuel industry: The case of illinois
E. D. Attanasi, E.K. Green
1981, The Annals of Regional Science (15) 43-52
The Federal Government's efforts to induce development of a coal-based synthetic fuel industry include direct subsidies, tax concessions, and assurances that it will purchase the industry's output, even if above the market price. In this note it is argued that these subsidies will enable this industry to secure a region's...
