Multicomponent seismic data analysis in the tau-p domain

I develop a number of new methods for performing slant stacking and its variants suitable to the processing of ocean bottom seismograph (OBS) data. I develop two versions of the discrete Radon transform (DRT) pair, a generalization of slant stacking, which can handle data unevenly spaced in both offset (x) and ray parameter (p). The discrete Radon transform matrix consists of two parts: a scaling matrix and a phase shift matrix. The elements in the phase shift matrix determine the amounts of the shift of given frequencies for stacking. I develop an iterative approach to perform velocity stacking, a parabolic variant of slant stacking, in the time domain. Invertibility of the transform is secured by iteration over the residual energy. A better focused version of the velocity profile is achieved. I extend conventional slant stacking of single component data to multicomponent data by performing a "vector" slant stack. The vector slant stack is performed by first transforming each component of the data, then combining the components in the $\tau$-p. This transform produces a vector field in $\tau$ and p. A color scheme using RGB intensity respectively to represent the vertical, radial and transverse components in either the x-t or the $\tau$-p domain is developed for displaying three component seismic data. I develop a technique to separate P-wave and S-waves arriving at the receiver in the vector $\tau$-p domain. I have designed an algorithm to decompose a vector common-p trace into P, SV, and SH traces. The result will be three sections in the $\tau$-p domain which can be inverse transformed to the x-t domain. (Abstract shortened by UMI.)

Name thesis:degree_name

Master of Arts

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Natural Sciences

Grantor

Rice University

Year dc:date.issued

1997

Author dc:creator

• Jiang, Zerong

Advisor dc:contributor.advisor

• Sawyer, Dale S.

• Geophysics

Statement dc:rights

• Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.

Language dc:language.iso

eng

Handle dc:identifier.uri

https://hdl.handle.net/1911/17098

OAI identifier oai:identifier

oai:repository.rice.edu:1911/17098