Bulletin of the Seismological Society of America
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Bulletin of the Seismological Society of America; June 1971; v. 61; no. 3; p. 707-721
© 1971 Seismological Society of America
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A theory for pressure radiation from ocean-bottom earthquakes

PAUL G. RICHARDS

INSTITUTE OF GEOPHYSICS AND PLANETARY PHYSICS UNIVERSITY OF CALIFORNIA, SAN DIEGO LA JOLLA, CALIFORNIA 92037

Abstract

An ocean-bottom earthquake is modelled as motion of a rigid boundary adjacent to a fluid half-space. The resulting water pressure, for a wide class of source motions, is obtained exactly as a convolution integral. The kernel has a physical interpretation as a fundamental solution, and may be obtained explicitly by a Cagniard method. A worked example is given, in which the convolution is carried out, and steps in pressure are found which are approximately equivalent to an extra 200 m in the water column.






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