Full text loading...
-
Multiscale Semi-analytical SH-wave Modeling of Rough Surface Responses
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
As there are several approximation methods available to rough surface scattering, we should have a clear understanding of their shortcomings and merits. Fu (2005) modified a number of approximation methods for analytically describing rough surface scattering in irregular crustal wave guides, and carried detailed comparisons of the SH-wave field results with the harmonic plane wave incidence. In this study, we present further study on the limitations and accuracies of several semi-analytical methods, including the Kirchhoff approximation method, the Taylor expansion-based perturbation method, the Rytov phase approximation method, and the Born series method. Different from Fu (2005) , we will focus on the modeling with a point source both in frequency domain and time domain. At last, we present a combined multiscale semi-analytical method consisting of three approximations.