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Page 5269, results 131701 - 131725

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Amplitude of foreshocks as a possible seismic precursor to earthquakes
A.G. Lindh
1978, Earthquake Information Bulletin (USGS) (10) 162-164
In recent years, we have made significant progress in being able to recognize the long-range pattern of events that precede large earthquakes. For example, in a recent issue of the Earthquake Information Bulletin, we saw how the pioneering work of S.A. Fedotov of the U.S.S.R in the Kamchatka-Kurile Islands region has...
Quakes; U. S. plans ways to cope
W. Sullivan
1978, Earthquake Information Bulletin (USGS) (10) 160-161
To minimize damage and loss of life when, as is believed inevitable, a major earthquake strikes the United States, plans have been prepared for the creation of new Federal agencies, widespread reinforcement of structures and extensive research on earthquake prediction, control, and hazard reduction. ...
Water-level monitoring in the area of the Palmdale Uplift, Southern California
D.L. Lamar, P.M. Merifield
1978, Earthquake Information Bulletin (USGS) (10) 144-147
Abnormal behavior of water levels in wells has been observed prior to a number of earthquakes. For instance, water-level minima have been noted in the Cienega Winery well before earthquakes on the San Andreas fault. Abnormal water-level fluctuations were used in conjunctions with other precursors to predict the February 4,...
Earthquakes; November-December, 1978
W. J. Person
1978, Earthquake Information Bulletin (USGS) (11) 110-112
Seismically speaking, the last 2 months were the most active of the year. There were six major earthuakes having magnitudes (M) ranging from 7.0 to 7.9 throughout the world: the Solomon Islands, Mexico (the largest of the year, M=7.9), the Kuril Islands, Taiwan, the Philippine Islands, and western Iran. THe...
Radon emanation on the San Andreas Fault
C. Y. King
1978, Earthquake Information Bulletin (USGS) (10) 136-138
Radon is a radioactive gas with a half-life of 3.8 days. (Half-life is the time required for the substance to lose half of its radioactivity by decay.) It is itself produced by the decay of uranium. Radon is constantly emanated from the Earth into the atmosphere. Many cases are known...
Geodimeter measurements and the Southern California uplift
W.H. Prescott, J.C. Savage
1978, Earthquake Information Bulletin (USGS) (10) 131-135
Modern surveying instruments, such as geodimeters, are capable of measuring distances in the range of 1 to 30 kilometers with remarkable precision. Indeed, the present limitation upon the precision of measurement is not the resolution of the instruments themselves but rather the uncertainty introduced by variations in the velocity of...
Sea-level changes before large earthquakes
M. Wyss
1978, Earthquake Information Bulletin (USGS) (10) 165-168
Changes in sea level have long been used as a measure of local uplift and subsidence associated with large earthquakes. For instance, in 1835, the British naturalist Charles Darwin observed that sea level dropped by 2.7 meters during the large earthquake in Concepcion, CHile. From this piece of evidence and...
Prediction monitoring and evaluation program; a progress report
R.N. Hunter, J.S. Derr
1978, Earthquake Information Bulletin (USGS) (10) 93-96
Can your friend's relative really predict earthquakes? Or how about that fellow in the mountains who has always liked geology, does he have the answer to the "when" of earthquakes? And if these people do actually predict an earthquake, is it a lucky guess or are they tuned in to...
Clarence Allen talks about the responsibilities in earthquake prediction
H. Spall
1978, Earthquake Information Bulletin (USGS) (10) 116-119
Dr. Clarence R. Allen is professor of geology and geophysics at the California Institute of Technology. He has been a member of advisory panels to the Executive Office of the President, National Academy of Sciences, National Science Foundation, U.S Geological Survey, UNESCO, California State Mining and Geology Board, and the...
Tiltmeter studies in earthquake prediction
M. Johnston
1978, Earthquake Information Bulletin (USGS) (10) 182-186
Our knowledge is still very limited as to the way in which the Earth's surface deforms around active faults and why it does so. By far the easiest method of providing clues to the mechanisms involved is to record the associated pattern of tilt of the Earth's surface.  tilt measurements give...
Earthquakes, November-December 1977
W. J. Person
1978, Earthquake Information Bulletin (USGS) (10) 97-99
Two major earthquakes occurred in the last 2 months of the year. A magnitude 7.0 earthquake struck San Juan Province, Argentina, on November 23, causing fatalities and damage. The second major earthquake was a magnitude 7.0 in the Bonin Islands region, an unpopulated area. On December 19, Iran experienced a...
Earthquakes, March-April 1978
W. J. Person
1978, Earthquake Information Bulletin (USGS) (10) 192-194
Earthquakes caused fatalities in Mexico and Sicily; injuries and damage were sustained in eastern Kazakh SSR and Yugoslavia. There were four major earthquakes; one south of Honshu, Japan, two in the Kuril Islands region, and one in the Soviet Union. The United States experienced a number of earthquakes, but only...
Earthquakes; July-August 1977
W. J. Person
1978, Earthquake Information Bulletin (USGS) (10) 26-27
July and August were somewhat active seismically speaking, compared to previous months of this year. There were seven earthquakes having magnitudes of 6.5 or greater. The largest was a magnitudes of 6.5 or greater. The largest was a magnitude 8.0 earthquake south of Sumbawa Island on August 19 that killed...
Continuous strain measurements near the San Andreas Fault
M. Johnston
1978, Earthquake Information Bulletin (USGS) (10) 187-191
Changes in the state of stress in the Earth's crust produces corresponding changes in the state of strain and may result, as a consequence, in damaging earthquakes. Monitoring ground strain can, therefore, help us in understanding how stress changes occur and when they are likely to lead to this kind...
Gilbert White talks about natural hazards
H. Spall
1978, Earthquake Information Bulletin (USGS) (10) 16-19
Dr. Gilbert White is Director of the Institute of Behavioral Science at the University of Colorado, Boulder, where he is responsible for natural Hazards Research and Applications Information Center supported by the National Science Foundation. He served in the Executive Office of the president in 1941-42, on the Federal Flood...
Coccidia of whooping cranes
Donald J. Forrester, J. W. Carpenter, D.R. Blankinship
1978, Journal of Wildlife Diseases (14) 24-27
Coccidial oocysts were observed in 6 of 19 fecal samples from free-ranging whooping cranes (Grus americana) and 4 of 16 samples from captive whooping cranes. Eimeria gruis occurred in four free-ranging whooping cranes and E. reichenowi in two free-ranging and two captive whooping cranes. Fecal samples from two captive cranes contained oocysts of lsospora lacazei which...