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Frequency-domain least-squares generalized internal multiple imaging with the energy norm

摘要:Recorded seismic data contain various types of scattered energy, including those corresponding to multiples. Traditional imaging techniques are focused on single-scattering events and, thus, may fail to image crucial structures, such as salt flanks and faults that sometimes are illuminated only by the multiple scattered energy. The recently introduced generalized internal multiple imaging (GIMI) method offers an opportunity to image multiples by projecting the recorded data back into the subsurface, followed by an interferometric crosscorrelation of the subsurface wavefield with the recorded data. During this process, the interferometric step converts the first-order scattering to a tomographic component and the double-scattering forms the primary reflectivity. Dealing with a large volume of data consisting of full wavefields over the image space renders the interferometric step computationally expensive in the time domain. To make the implementation of GIMI tractable, we formulate its frequency-domain version. Moreover, we use the energy norm imaging condition to separate the reflectivity portion from the tomographic component. We demonstrate these features with numerical experiments.

ISSN号:0016-8033

卷、期、页:卷: 85期: 4页: S233-S240

发表日期:2020-07-01

影响因子:2.608800

期刊分区(SCI为中科院分区):三区

收录情况:SCI(科学引文索引印刷版),地学领域高质量科技期刊分级目录(国外T1),SCIE(科学引文索引网络版)

发表期刊名称:Geophysics

参与作者:Guo, Qiang,Alkhalifah, Tariq

通讯作者:王官超

第一作者:王尚旭

论文类型:期刊论文

论文概要:王官超,Guo, Qiang,Alkhalifah, Tariq,王尚旭,Frequency-domain least-squares generalized internal multiple imaging with the energy norm,Geophysics,2020,卷: 85期: 4页: S233-S240

论文题目:Frequency-domain least-squares generalized internal multiple imaging with the energy norm

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