Type
Conference PaperAuthors
Ma, XuxinAlkhalifah, Tariq Ali

KAUST Department
Earth Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
Seismic Wave Analysis Group
Date
2012-10-25Online Publication Date
2012-10-25Print Publication Date
2012-09Permanent link to this record
http://hdl.handle.net/10754/593745
Metadata
Show full item recordAbstract
Normal ray coordinates are conventionally constructed from ray tracing, which inherently requires smooth velocity profiles. To use rays as coordinates, the velocities have to be smoothed further to avoid caustics, which is detrimental to the mapping process. Solving the eikonal equation numerically for a line source at the surface provides a platform to map normal rays in complex unsmoothed velocity models and avoid caustics. We implement reverse-time migration (RTM) and downward continuation in the new ray coordinate system, which allows us to obtain efficient images and avoid some of the dip limitations of downward continuation.Citation
Ma, X., & Alkhalifah, T. (2012). Wavefield extrapolation in caustic-free normal ray coordinates. SEG Technical Program Expanded Abstracts 2012. doi:10.1190/segam2012-0104.1Publisher
Society of Exploration GeophysicistsConference/Event name
SEG Technical Program Expanded Abstracts 2012Additional Links
http://library.seg.org/doi/abs/10.1190/segam2012-0104.1ae974a485f413a2113503eed53cd6c53
10.1190/segam2012-0104.1