The Bellingshausen Sea earthquake of February 5, 1977: Evidence for ridge-generated compression in the Antarctic plate

Emile A. Okal*

*Corresponding author for this work

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Body- and surface-wave data from a magnitude Ms = 6.4 event in the Bellingshausen Sea are used to infer a thrust fault mechanism, with compressional stress directed parallel to the vector of relative motion between Antarctica and the Pacific plate at the nearby ridge. The solution would not, on the other hand, be compatible with stress fields involving absolute plate motion, such as asthenospheric drag.

Original languageEnglish (US)
Pages (from-to)306-310
Number of pages5
JournalEarth and Planetary Science Letters
Volume46
Issue number2
DOIs
StatePublished - Jan 1980

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

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