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

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.

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Document Details

Document Type
Technical Report
Publication Date
Sep 15, 1975
Accession Number
ADA025239

Entities

People

  • Thomas W. Mcelfresh
  • Zoltan A. Der

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Computations
  • Computer Programs
  • Continents
  • Data Analysis
  • Detection
  • Earthquakes
  • Frequency
  • Measurement
  • North America
  • Nuclear Explosions
  • Observation
  • Power Spectra
  • Rocky Mountains
  • Travel Time
  • United States
  • Waves

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  • Seismology