Elastic Wave Equation traveltime and waveform inversion of crosshole seismic data: Theory

Changxi Zhou*, Gerard T. Schuster, Sia Hassanzadeh

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

An acoustic Wave Equation Travel Time and Wave Form (acoustic WTW) Inversion method was presented by Zhou et al. (1993) to invert the P-wave velocity distribution from crosshole seismic data. The acoustic WTW tomograms showed about 6 times greater spatial resolution than the corresponding travel time tomograms. In this paper we present the elastic wave equation travel time and waveform (elastic WTW) inversion method which inverts for both the P-wave and S-wave velocity distributions from crosshole seismic data. Comparison of the elastic WTW tomograms with the acoustic WTW tomograms shows that both methods can invert for a high resolution P-wave velocity structure when the S-wave energy is very weak in the recorded seismograms. Elastic WTW inversion is superior to acoustic WTW inversion when there are significant S-waves in the recorded seismograms. The disadvantage of elastic WTW inversion is that it can be more than 5 times computationally expensive than the acoustic waveform inversion.

Original languageEnglish (US)
Pages743-746
Number of pages4
StatePublished - Jan 1 2018
Event1994 Society of Exploration Geophysicists Annual Meeting, SEG 1994 - Los Angeles, United States
Duration: Oct 23 1994Oct 28 1994

Conference

Conference1994 Society of Exploration Geophysicists Annual Meeting, SEG 1994
CountryUnited States
CityLos Angeles
Period10/23/9410/28/94

ASJC Scopus subject areas

  • Geophysics

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