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

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

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

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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 (m_b=4.8) is used to provide Empirical Green's Functions to analyze the rupture directivity of the larger (M_w=5.3) mainshock. These events indicate complexity in the crustal stress environment on the western margin of the Colorado Plateau. -Authors

Original language	English (US)
Pages (from-to)	451-457
Number of pages	7
Journal	Bulletin - Seismological Society of America
Volume	84
Issue number	2
State	Published - 1994

All Science Journal Classification (ASJC) codes

Geophysics
Geochemistry and Petrology

Cite this

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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",

author = "T. Lay and J. Ritsema and Ammon, {C. J.} and T. Wallace",

year = "1994",

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journal = "Bulletin - Seismological Society of America",

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T1 - Rapid source-mechanism analysis of the April 29, 1993 Cataract Creek (Mw=5.3), northern Arizona earthquake

AU - Lay, T.

AU - Ritsema, J.

AU - Ammon, C. J.

AU - Wallace, T.

PY - 1994

Y1 - 1994

N2 - 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

AB - 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

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JO - Bulletin - Seismological Society of America

JF - Bulletin - Seismological Society of America

IS - 2

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

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