Accession Number:

ADA025239

Title:

Short-Period P Wave Attenuation along Various Paths in North America as Determined from P Wave Spectra of the SALMON Nuclear Explosion

Descriptive Note:

Technical rept. 1 Jul 1975-30 Jun 1976

Corporate Author:

TELEDYNE GEOTECH ALEXANDRIA VA SEISMIC DATA ANALYSIS CENTER

Personal Author(s):

Report Date:

1975-09-15

Pagination or Media Count:

68.0

Abstract:

Average Q values were determined for ray paths to various LRSM stations from the SALMON nuclear explosion, which was located in a salt dome in Mississippi, by taking ratios of observed P wave spectra to that of the estimated source spectrum. Most average Q values for the SALMON P wavepaths throughout eastern North America are close to 2000 while those with the last half of their path in the western United States are typically around 400-500. These differences in Q seem to be sufficient to explain the .3-.4 magnitude differences in the teleseismic event magnitude observed in the western vs. eastern United States.

Subject Categories:

  • Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE