Seismic Scaling of Explosive Source Functions Using Teleseismic P Waves

Abstract

Short period P waves of four presumed Soviet explosions from Eastern Kazakh are examined at five teleseismic arrays: LASA, YKA, OONW, WRA and GBA. Transfer functions to shape the lower magnitude to the highest magnitude event were computed at each array to eliminate transmission path effects from source to receiver. The transfer functions are locally consistent from sensor to sensor at each array, but show considerable global variations from array to array. This suggests that there are strong azimuthal variations in the source radiation of the events, due to complex scattering of the signals at the test site. At LASA, the observed transfer functions can be explained by using explosion source functions of Blake and Haskell. The assumed source parameters are scaled functions of the yield of each event, which is estimated from an empirical amplitude yield relationship.

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Document Details

Document Type
Technical Report
Publication Date
Apr 14, 1971
Accession Number
AD0723638

Entities

People

  • Clint W. Frasier

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Abstracts
  • Beam Steering
  • Data Analysis
  • Explosions
  • Explosives
  • Far Field
  • Frequency
  • Frequency Domain
  • Massachusetts
  • Nuclear Explosions
  • Radiation
  • Radiation Patterns
  • Seismic Arrays
  • Step Functions
  • Transfer Functions
  • United Kingdom
  • United States

Readers

  • Seismology