Abstract

This paper presents high-order operators for common-azimuth wave equation depth migration by wavefield extrapolation in media with strong velocity variations. The operators are derived from the approximation of the double-square-root (DSR) equation in the wavenumber domain and implemented in hybrid schemes, e.g., Fourier finite-difference (FFD) method, which contains implicit finite-difference (FD) operators in the space domain. To increase the accuracy of the migration we employ high-order approximations for the derivation of the FD operators. We test the second- and fourth-order operators on both synthetic and field datasets. The tests demonstrate that the fourth-order operators improve the image quality.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.