CaltechAUTHORS
  A Caltech Library Service

Teleseismic short-period amplitudes: Source and receiver variations

Butler, Rhett and Ruff, Larry (1980) Teleseismic short-period amplitudes: Source and receiver variations. Bulletin of the Seismological Society of America, 70 (3). pp. 831-850. ISSN 0037-1106. https://resolver.caltech.edu/CaltechAUTHORS:20140819-120213637

[img]
Preview
PDF - Published Version
See Usage Policy.

1MB

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20140819-120213637

Abstract

Short-period P-wave amplitude data from nuclear explosions in the Soviet Union recorded by WWSSN stations in the United States are presented. Thirty-four events in five test sites are analyzed. The consistency and similarity of the initial P waveforms allow a stable amplitude measure. A well-defined amplitude pattern is obtained for each source region. The test sites at northern and southern Novaya Zemlya show a relative amplitude trend of a factor of 3 across the United States in their respective amplitude patterns. This is in contrast to two sites at Semipalatinsk which are in good relative agreement. A pattern of lateral variation of amplitude in the United States is obtained for a northern azimuth of approach. Stations situated on sediments are corrected for amplification effects. In contrast to previous studies, stations in the Western United States do not have systematically lower amplitudes than Eastern United States stations. Lowest amplitudes are found in Golden, Colorado (GOL) and Albuquerque, New Mexico (ALQ), a factor of 4 lower than high amplitude stations. Preliminary amplitude data are presented from earthquakes in the Kuriles and South America. Events are chosen for consistency of waveforms across the United States to minimize earthquake source and directivity effects. These earthquake data indicate that amplitude variations in the United States are azimuthally dependent.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://bssa.geoscienceworld.org/content/70/3/831.abstractPublisherArticle
Additional Information:Manuscript received July 11, 1979. We thank Don Helmberger and L. J. Burdick for many discussions. Florence Helmberger assisted in gathering the earthquake data. Rhett Butler was partially supported by the Fannie and John Hertz Foundation Fellowship. This research was supported by the Advanced Research Projects Agency of the Defense Department and was monitored by the Air Force Office of Scientific Research under Contract F49620-79-C-0012 with Sierra Geophysics, Inc., and by Contract F49620-77-C-022 with the Seismological Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology.
Funders:
Funding AgencyGrant Number
Fannie and John Hertz FoundationUNSPECIFIED
Advanced Research Projects Agency (ARPA)UNSPECIFIED
Air Force Office of Scientific Research (AFOSR)F49620-79-C-0012
Air Force Office of Scientific Research (AFOSR)F49620-77-C-022
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences3431
Issue or Number:3
Record Number:CaltechAUTHORS:20140819-120213637
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140819-120213637
Official Citation:Butler, R., & Ruff, L. (1980). Teleseismic short-period amplitudes: Source and receiver variations. Bulletin of the Seismological Society of America, 70(3), 831-850.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48685
Collection:CaltechAUTHORS
Deposited By:INVALID USER
Deposited On:19 Aug 2014 21:50
Last Modified:03 Oct 2019 07:06

Repository Staff Only: item control page