Time-domain full waveform inversion using the gradient preconditioning based on seismic wave energy: Application to the South China Sea

Zhong Mengxuan, Tan Jun, Song Peng, Zhang Xiao-bo, Xie Chuang, Liu Zhao-lun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The gradient preconditioning algorithms based on Hessian matrices in time-domain full waveform inversion (FWI) are widely used now, but consume a lot of memory and do not fit the FWI of large models or actual seismic data well. To avoid the huge storage consumption, the gradient preconditioning approach based on seismic wave energy has been proposed it simulates the “approximated wave field” with the acoustic wave equation and uses the energy of the simulated wavefield to precondition the gradient. The method does not require computing and storing the Hessian matrix or its inverse and can effectively eliminate the effect caused by geometric diffusion and uneven illumination on gradient. The result of experiments in this article with field data from South China Sea confirms that the time-domain FWI using the gradient preconditioning based on seismic wave energy (GPWE) can achieve higher inversion accuracy for the deep high-velocity model and its underlying strata.
Original languageEnglish (US)
Title of host publicationInternational Geophysical Conference, Qingdao, China, 17-20 April 2017
PublisherSociety of Exploration Geophysicists
DOIs
StatePublished - May 31 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01

Fingerprint Dive into the research topics of 'Time-domain full waveform inversion using the gradient preconditioning based on seismic wave energy: Application to the South China Sea'. Together they form a unique fingerprint.

Cite this