Near-field surface motions excited by radiation from a slip zone of arbitrary shape.

J. G. Harris, J. D. Achenbach

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

A ray method is used to calculate the near-field ground acceleration excited by sliding on a fault plane. The sliding action is modeled by a propagating mode II crack. The crack is planar and it has an edge of arbitrary but smooth curvature. Attention is focused upon the case in which the expanding crack abruptly changes its rate of growth to a slower one. This change in propagation speed causes a burst of wave motion to be emitted. The interaction of the high-frequency (or wave front) part of the emitted acceleration pulse with the free surface is studied. The near field, where body waves dominate the wave motion at the surface, is considered in some detail. -Authors

Original languageEnglish (US)
Pages (from-to)9352-9356
Number of pages5
JournalJournal of Geophysical Research
Volume86
Issue numberB10
DOIs
StatePublished - Jan 1 1981

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)
  • Palaeontology

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