Published January 1979
| Published
Journal Article
Open
Near-field waveforms from an arbitrarily expanding, transparent spherical cavity in a prestressed medium
- Creators
- Minster, J. B.
Abstract
A simple, approximate ('transparent') solution is derived for the near-field radiation emitted by a spherical cavity expanding in an initial pure shear prestress field. Near-field terms, their propagation and decay are discussed for a variety of growth histories, and are shown to be rather insensitive to the detailed variations of rupture velocity. The transparency approximation is shown to be adequate in the near field as well as in the far field; the main effect is a slight narrowing of far-field pulses. Time domain moment estimators at close range are more reliable for the S wave than for the P wave since transverse pulses are not as strongly contaminated by near-field effects.
Additional Information
Copyright © 1979 The Royal Astronomical Society. Received 1978 June 28; in original form 1978 January 1. This research was supported by the Advanced Research Projects Agency of the Department of Defense, and was monitored by the Air Force Office of Scientific Research under Contract No. F49620-77-C-0022. Contribution No. 3021, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, USA.Attached Files
Published - Geophys._J._Int.-1979-Minster-81-96.pdf
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Geophys._J._Int.-1979-Minster-81-96.pdf
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Additional details
- Eprint ID
- 51608
- Resolver ID
- CaltechAUTHORS:20141111-152853495
- Advanced Research Projects Agency (ARPA)
- F49620-77-C-0022
- Air Force Office of Scientific Research (AFOSR)
- Created
-
2014-11-11Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 3021