Gaussian beam prestack depth migration in heterogeneous transversely isotropic media
Jianguang Han 1 2 Yun Wang 3 4
+ Author Affiliations
- Author Affiliations
1 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China.
2 University of Chinese Academy of Sciences, Beijing 100049, China.
3 Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China.
4 Corresponding author. Email: yunwang@mail.iggcas.ac.cn
Exploration Geophysics 46(2) 153-158 https://doi.org/10.1071/EG13061
Submitted: 23 June 2013 Accepted: 17 February 2014 Published: 18 March 2014
Abstract
The transversely isotropic (TI) media approximation is commonly applied to assist in the processing of seismic data acquired in sedimentary environments. Based on anisotropic kinematic and dynamic ray tracing systems, a P-wave Gaussian beam prestack depth migration (GB-PSDM) method for TI media is introduced in this paper. The imaging principle of anisotropic GB-PSDM and the corresponding migration parameters are presented on the basis of the GB-PSDM method in isotropic media. Tests of synthetic and field seismic data show that the method is an accurate and efficient anisotropic prestack depth migration method in TI media.
Key words: anisotropy, Gaussian beam prestack depth migration, ray tracing, transversely isotropy media.
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