Source characterization of selected North Caspian events from the relative excitation of regional phases. Final report

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Description

Seismograms of seven recent events (presumed underground nuclear explosions) which occurred during 1976-1979 in the North Caspian Sea region of the western Soviet Kazakh are compared at regional distances for their relative source excitation characteristics. The body wave magnitude estimates of these events range from 5.1 to 6.0. The data consist of analog and digital records collected at stations ranging in instrumental sophistication from temporary sites with single component smoke drum capability to those of SRO, ASRO and array (ILPA) configurations with digitally recorded down-hole observations. The amplitude and frequency measurements of the analog seismograms for the first arrival and ... continued below

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Pages: 147

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Niazi, M. November 1, 1981.

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Description

Seismograms of seven recent events (presumed underground nuclear explosions) which occurred during 1976-1979 in the North Caspian Sea region of the western Soviet Kazakh are compared at regional distances for their relative source excitation characteristics. The body wave magnitude estimates of these events range from 5.1 to 6.0. The data consist of analog and digital records collected at stations ranging in instrumental sophistication from temporary sites with single component smoke drum capability to those of SRO, ASRO and array (ILPA) configurations with digitally recorded down-hole observations. The amplitude and frequency measurements of the analog seismograms for the first arrival and the peak amplitude of P coda as well as for the clear S wave signals recorded for different events at the same station are compared.

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Pages: 147

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NTIS, PC A07/MF A01.

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  • Other: DE82006858
  • Report No.: UCRL-15428
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/5730190 | External Link
  • Office of Scientific & Technical Information Report Number: 5730190
  • Archival Resource Key: ark:/67531/metadc1092443

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • November 1, 1981

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

Description Last Updated

  • March 23, 2018, 1:09 p.m.

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Niazi, M. Source characterization of selected North Caspian events from the relative excitation of regional phases. Final report, report, November 1, 1981; United States. (digital.library.unt.edu/ark:/67531/metadc1092443/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.