Rapid source-mechanism analysis of the April 29, 1993 Cataract Creek (Mw=5.3), northern Arizona earthquake

T. Lay, J. Ritsema, C. J. Ammon, T. Wallace

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

The source mechanism of two moderate-size normal-faulting earthquakes located slightly south of the Grand Canyon in Arizona are studied, using several near real-time seismic-wave analysis procedures. The events are found to have source depths near 10 to 15km, and the smaller of the two events (mb=4.8) is used to provide Empirical Green's Functions to analyze the rupture directivity of the larger (Mw=5.3) mainshock. These events indicate complexity in the crustal stress environment on the western margin of the Colorado Plateau. -Authors

Original languageEnglish (US)
Pages (from-to)451-457
Number of pages7
JournalBulletin - Seismological Society of America
Volume84
Issue number2
StatePublished - Jan 1 1994

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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