Simultaneous inversion for hypocenters and lateral velocity variations: an iterative solution with a layered model.

B. W. Hawley, G. Zandt, R. B. Smith

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

An iterative inversion technique has been developed that uses the direct P and S wave arrival times from local earthquakes to compute simultaneously a three-dimensional velocity structure and relocated hypocenters. Crustal structure is modeled by subdividing flat layers into rectangular blocks. An interpolation function is used to smoothly vary velocities between blocks, allowing ray trace calculations of travel times in a three-dimensional medium. Tests using synthetic data from known models show that solutions are reasonably independent of block size and spatial distribution but are sensitive to the choice of layer thicknesses. -Authors

Original languageEnglish (US)
Pages (from-to)7073-7086
Number of pages14
JournalJournal of Geophysical Research
Volume86
Issue numberB8
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
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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