Publications
Filter Total Items: 7220
In-situ measurements of seismic velocities in the San Francisco Bay region...Part II
Seismic wave velocities (compressional and shear) are important parameters for determining the seismic response characteristics of various geologic units when subjected to strong earthquake ground shaking.Seismic velocities of various units often show a strong correlation with the amounts of damage following large earthquakes and have been used as a basis for certain types of seismic zonation stud
Authors
James F. Gibbs, Thomas E. Fumal, Roger D. Borcherdt
Map of landslides in coastal plain deposits of the Franconia area, Fairfax County, Virginia
No abstract available.
Authors
Stephen F. Obermeier, Kurt Hollocher
Geomagnetic array control circuit
No abstract available.
Authors
Roger Lescelius, D. H. Rohret, R. A. Sneddon, J.N. Towle, D.V. Fitterman
Landslide problems at West Valley Nuclear Service Center, New York: An assessment and recommendations for study
Problems due to landslides prompted a visit to the West Valley Nuclear Service Center (WVNSC) near Springville, New York, on March 15 and 16, 1976. From this visit a report was prepared and contains the following:
An assessment of the landslide conditions.
An assessment of the immediacy of the landslide problems.
A suggested study program for reducing the landslide hazard to an acceptable level.
Authors
Robert W. Fleming
Analysis of seismograms from a downhole array in sediments near San Francisco Bay
A four-level downhole array of three-component instruments was established on the southwest shore of San Francisco Bay to monitor the effect of the sediments on low-amplitude seismic ground motion. The deepest instrument is at a depth of 186 meters, two meters below the top of the Franciscan bedrock. Earthquake data from regional distances (29 km ≤ Δ ≤ 485 km) over a wide range of azimuths are com
Authors
William B. Joyner, Richard E. Warrick, Adolph A. Oliver
15/16 ips Operation of the Precision Instrument Company Model P15100 tape recorder to record the standard (30 Hz) NCER seismic data multiplex system
In recent months the need has arisen to record special seismic networks consisting of a dozen or more standard NCER seismic systems telemetered to a central collection point on a reliable, portable, low-power tape recorder. Because of its simplicity and the ease with which it can be adapted for the purpose, the PI 5100 field recorder should be considered for such use. In the tests described here,
Authors
Jerry P. Eaton
A preliminary inventory, description, and statistical evaluation of landslides in a region of projected urban development, Sheridan, Wyoming
No abstract available.
Authors
A.F. Chleborad, Thomas C. Nichols, W.F. Ebaugh
Prediction of maximum earthquake intensities for the San Francisco Bay region
No abstract available.
Authors
Roger D. Borcherdt
Crustal movement investigations
Studies of horizontal crustal movement using conventional geodetic methods have been considerably expanded in the quadrennium 1971–1974. The basic fault monitor Geodimeter network now covers most of the major faults in California as well as the zone of faulting that extends into Nevada. Isolated Geodimeter networks in seismic areas of Montana, New Mexico, Utah, and Washington are also monitored. P
Authors
James C. Savage
Influence of rainfall and ancient landslide deposits on recent landslides (1950-71) in urban areas of Contra Costa County, California
No abstract available.
Authors
Tor Helge Nilsen, Barbara L. Turner
Seismic profiles of the offshore Gulf of Alaska Tertiary Province, R/V Thompson, Sept.-Oct. 1974
No abstract available.
Authors
Roland E. von Huene, B. F. Molnia, T. R. Bruns, P. R. Carlson