Abstract/Details

Seismic waveform tomography with multicomponent data at a groundwater contamination site


2009 2009

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Abstract (summary)

This thesis develops an SH-wave version of frequency-domain, full waveform tomography, and applies it, together with traditional acoustic waveform tomography, to a multicomponent seismic data set acquired over a shallow contaminated aquifer at Hill Air Force Base, Utah. The study combines the high resolution provided by waveform tomography with inherent advantages of SH-wave imaging, such as reduced seismic velocity and independence of pore fluid content. Presented are synthetic tests of the method, its application to the field data, and interpretation of the resulting P- and S-wave velocity models.

Synthetic tests reveal fundamental differences between acoustic and SH waveform tomography, and demonstrate, together with the field data inversions, improved resolution for SH-wave imaging due to smaller velocities. High-resolution velocity models from inversion of the field data are interpreted in terms of lithology and water saturation, which are better constrained by the availability of both P- and S-wave velocity.

Indexing (details)


Subject
Geology;
Geophysics
Classification
0372: Geology
0373: Geophysics
Identifier / keyword
Earth sciences
Title
Seismic waveform tomography with multicomponent data at a groundwater contamination site
Author
Chambers, Geoffrey
Number of pages
71
Publication year
2009
Degree date
2009
School code
0187
Source
MAI 47/06M, Masters Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9781109211863
Advisor
Levander, Alan
University/institution
Rice University
University location
United States -- Texas
Degree
M.S.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
1466765
ProQuest document ID
304987567
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304987567
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