Laplace-domain crosstalk-free source-encoded elastic full-waveform inversion using time-domain solvers

Author:

Liu Zhaolun1ORCID,Hoffmann Jürgen2,Bachmann Etienne3ORCID,Cui Congyue3ORCID,Simons Frederik J.3ORCID,Tromp Jeroen4ORCID

Affiliation:

1. Formerly Princeton University, Department of Geosciences, Princeton, New Jersey, USA; presently Saudi Aramco, Dhahran, Saudi Arabia. (corresponding author)

2. DNO ASA, Oslo, Norway.

3. Princeton University, Department of Geosciences, Princeton, New Jersey, USA.

4. Princeton University, Department of Geosciences, Princeton, New Jersey, USA and Princeton University, Program in Applied and Computational Mathematics, Princeton, New Jersey, USA.

Abstract

Crosstalk-free source-encoded elastic full-waveform inversion (FWI) using time-domain solvers demonstrates skill and efficiency at conducting seismic inversions involving multiple sources and receivers with limited computational resources. A drawback of common formulations of the procedure is that, by sweeping through the frequency domain randomly at a rate of one or a few sparsely sampled frequencies per shot, it is difficult to simultaneously incorporate time-selective data windows, as necessary for the targeting of arrivals or wave packets during the various stages of the inversion. Here, we solve this problem by using the Laplace transform of the data. Using complex-valued frequencies allows for damping the records with flexible decay rates and temporal offsets that target specific traveltimes. We present the theory of crosstalk-free source-encoded FWI in the Laplace domain, develop the details of its implementation, and illustrate the procedure with numerical examples relevant to exploration-scale scenarios.

Publisher

Society of Exploration Geophysicists

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Waveform modelling of hydroacoustic teleseismic earthquake records from autonomous Mermaid floats;Geophysical Journal International;2024-07-16

2. Seismic Tomography 2024;Bulletin of the Seismological Society of America;2024-05-03

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