PKP Travel Times and B Factors

Abstract

Using Jordan and Anderson's earth model B1, we calculated theoretical travel times, depth allowance tables, branch interval times, and B factors for all PKP phases; the results are in tabular form. Travel times are calculated with polynomial approximations, and those coefficients are also computed. New additions to those tables are the data for the CD branch, which are the PKiKP arrivals in the distance range of 109 to 158 deg. Although travel times of the CD branch fall within a few seconds of the travel times of the DF branch, amplitudes of the CD branch signals are larger than those of the DF branch signals in most of the covering range. Discrepancies of theoretical travel times from the table based on Bolt's observations are calculated to show that tables presented here are adequate for practical use.

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Document Details

Document Type
Technical Report
Publication Date
Oct 24, 1978
Accession Number
ADA074014

Entities

People

  • Andre C. Chang
  • John W. Lambert

Tags

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  • Counter IED

DTIC Thesaurus Topics

  • Amplitude
  • Boundaries
  • Coefficients
  • Computations
  • Computer Programs
  • Computers
  • Data Analysis
  • Earth Models
  • Earthquakes
  • Epicenters
  • Models
  • New York
  • Observation
  • Plastic Explosives
  • Seismic Waves
  • Travel Time
  • Waves

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  • Government and Public Administration Law.
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  • Seismology