Accession Number:

ADA248345

Title:

Finite Difference Modelling of Seismic Wave Propagation at the Seafloor

Descriptive Note:

Final rept.

Corporate Author:

RASCON ASSOCIATES WEST FALMOUTH MA

Personal Author(s):

Report Date:

1991-01-01

Pagination or Media Count:

29.0

Abstract:

The Objectives of this study were 1 to implement the WHOI finite difference code on the CONVEX computer at NORDA and 2 to run a suite of models on the effects of lateral heterogeneity on the primary response from the seafloor. Finite difference solutions to the elastic wave equation accurately predict the response of impulsive and continuous waves sources wave types are included reflections, refractions, diffractions, Stoneley and pseudo-Rayleigh waves, evanescent waves and head waves. The primary disadvantage of the method is that it is very computation intensive and it is generally limited to problems with dimensions of only a few tens of wavelengths. This can be partially alleviated by using powerful computers such as the CONVEX at NORDA.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE