Finite Difference Elastic Wave Modeling Including Surface Topography
Name
AlMuhaidib_FDModeling.pdf
Size
879.75 KB
Format
Adobe PDF
Checksum (MD5)
6c2824c1d63ed9b69b38420dd945ce0a
Author(s)
Al Muhaidib, Abdulaziz
Fehler, Michael
Toksoz, M. Nafi
Zhang, Yang
Date Issued
2011
Publisher
Massachusetts Institute of Technology. Earth Resources Laboratory
Series/Report no.
Earth Resources Laboratory Industry Consortia Annual Report;2011-16
Abstract
Surface topography and the weathered zone (i.e., heterogeneity near the earth’s surface) have great effects on elastic wave propagation. Both surface waves and body waves are contaminated by scattering and conversion by the irregular surface topographic features. In this paper, we present a 2D numerical solver for the elastic wave equation that combines a 4th-order ADER scheme (Arbitrary high-order accuracy using DERivatives) with the characteristic variable method at the free surface boundary. The method is based on the velocity-stress formulation. We demonstrate the method by calculating synthetic seismograms for simple features.
Subjects
Modeling
Scattering
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