AVA Modeling of a BSR Based on Amplitude-Preserving Migration
Abd Haris, Dirk Klaeschen and Ernst Flueh
GEOMAR, Research Center for Marine Geosciences, Germany.
Contacts: aharis@geomar.de (Abd Haris)
Abstract
The Amplitude variation with angle (AVA) modeling of the seafloor and the Bottom Simulating Reflector (BSR) are carried out in order to estimate the possible causes of the seafloor and the BSR responses in a limited area of Hydrate Ridge offshore Oregon. The effects of different elastic properties on the seafloor and the BSR are explored in an attempt to match the synthetic AVA response with the observed seismic data, which are migrated using the Amplitude-Preserving (AP) migration in terms of angle-dependent reflectivity properties. Synthetic AVA responses of the seafloor and the BSR are calculated using Zoeppritz' equations over elastic models, which are varied until an acceptably close match is obtained between computed and observed AVA curves. The resulting models are expected to be able to quantify the amount of gas hydrate in the hydrate bearing sediments.
raeg2003@tansa.kumst.kyoto-u.ac.jp
Last modified: Wed Oct 30 00:59:57 2002