2-D reflectivity method and synthetic seismograms for irregularly layered structures - II. Invariant embedding approach

K. Koketsu, B. L N Kennett, Hiroshi Takenaka

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Laterally varying interfaces cause coupling between wavenumbers so that seismograms in two-dimensionally layered media can be synthesized by means of "supermatrices', which include the coupled contributions of all the wavenumbers. Reflection and transmission "supermatrices' are introduced here in order to eliminate numerical problems arising from loss of precision for evanescent waves in the seismogram synthesis. The computational demands of this method can be kept to a minimum by exploiting propagation invariants in the coupled wavenumber domain. The superior performance of this "invariant embedding' approach when compared to propagator or finite difference schemes is illustrated by application to the response of sedimentary basins to excitation by an incident plane wave or a line force. -from Authors

Original languageEnglish
Pages (from-to)119-130
Number of pages12
JournalGeophysical Journal International
Volume105
Issue number1
Publication statusPublished - 1991
Externally publishedYes

Fingerprint

synthetic seismogram
seismograms
seismogram
reflectivity
embedding
reflectance
layered medium
propagation
evanescent waves
sedimentary basin
plane waves
causes
synthesis
excitation
method
demand
loss

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

2-D reflectivity method and synthetic seismograms for irregularly layered structures - II. Invariant embedding approach. / Koketsu, K.; Kennett, B. L N; Takenaka, Hiroshi.

In: Geophysical Journal International, Vol. 105, No. 1, 1991, p. 119-130.

Research output: Contribution to journalArticle

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