Bulletin of the Seismological Society of America
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Bulletin of the Seismological Society of America; February 1973; v. 63; no. 1; p. 211-225
© 1973 Seismological Society of America
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A multipole representation of earthquake source mechanisms

F. RICHARD YEATTS

COLORADO SCHOOL OF MINES, GOLDEN, COLORADO 80401

Abstract

The static displacement field in an elastic half-space caused by a general, finite disturbance is derived in the form of an infinite series (multipole) expansion. The relationship between this theory and dislocation theory is discussed with the aid of examples. A multipole source model is derived for the strain-step field associated with the nuclear blast HANDLEY set off at the Nevada Test Site on March 26, 1970. The results suggest that there was significant fault movement associated with the detonation.






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