Fréchet kernels based on a fractional viscoacoustic wave equation

Guangchi Xing, Tieyuan Zhu

Research output: Contribution to conferencePaperpeer-review

2 Scopus citations

Abstract

Incorporating the seismic attenuation into the waveform inversion framework could not only improve the accuracy of the velocity model but also provide an additional Q model. Recently, we proposed a viscoacoustic wave equation assisted by the fractional Laplacian operators to accurately model the wave propagation in heterogeneous attenuating media with computational efficiency. The explicit presence of Q as a coefficient in this equation suggests the potential to conveniently develop its full waveform inversion scheme. In this study, we utilize the adjoint-state method to formulate the computation of the Fréchet kernels with respect to both velocity and attenuation based on this wave equation. These kernels will play a fundamental role in the viscoacoustic multiparameter waveform inversion.

Original languageEnglish (US)
Pages1455-1459
Number of pages5
DOIs
StatePublished - Jan 1 2020
EventSociety of Exploration Geophysicists International Exposition and Annual Meeting 2019, SEG 2019 - San Antonio, United States
Duration: Sep 15 2019Sep 20 2019

Conference

ConferenceSociety of Exploration Geophysicists International Exposition and Annual Meeting 2019, SEG 2019
CountryUnited States
CitySan Antonio
Period9/15/199/20/19

All Science Journal Classification (ASJC) codes

  • Geophysics

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