Seismic modeling using the frozen Gaussian approximation


Conference Paper

© 2013 SEG SEG Houston 2013 Annual Meeting. We adopt the frozen Gaussian approximation (FGA) for modeling seismic waves. The FGA method belongs to the category of ray-based beam methods. It decomposes the seismic wavefield into a set of Gaussian functions and propagates these functions along appropriate ray paths. As opposed to the classic Gaussian-beam method, FGA keeps the Gaussians frozen (at a fixed width) during the propagation process and adjusts their amplitudes in order to produce an accurate approximation after summation. We perform the initial decomposition of seismic data using a fast version of the FBI (Fourier-Bros-Iagolnitzer) transform and propagate the frozen Gaussian beams numerically using ray tracing. A test using a smoothed Marmousi model confirms the validity of FGA for accurate modeling of seismic wavefields.

Full Text

Duke Authors

Cited Authors

  • Yang, X; Lu, J

Published Date

  • January 1, 2013

Published In

  • Society of Exploration Geophysicists International Exposition and 83rd Annual Meeting, Seg 2013: Expanding Geophysical Frontiers

Start / End Page

  • 4677 - 4682

International Standard Book Number 13 (ISBN-13)

  • 9781629931883

Digital Object Identifier (DOI)

  • 10.1190/segam2013-1225.1

Citation Source

  • Scopus