Doctoral Dissertations

Author

Fansheng Kong

Abstract

"Over the past several decades, shear wave splitting analyses have been increasingly utilized to delineate mantle structure and probe mantle dynamics. However, the reported splitting parameters (fast polarization orientations and splitting times) are frequently inconsistent among different studies, partially due to the different techniques used to estimate the splitting parameters. Here the study conduct research on methodology investigations for shear wave splitting analysis, which are composed of two sub-topics, i.e., a systematic comparison of the transverse minimization (TM) and the splitting intensity (SI) techniques and applicability of the multiple-event stacking technique (MES). Numerical experiments are conducted using both synthetic and observed data.

In addition, crustal anisotropy beneath 71 broadband seismic stations situated at the eastern Tibetan Plateau and adjacent areas is investigated based on the sinusoidal moveout of P-to-S conversions from the Moho and an intra-crustal discontinuity with an average splitting time of 0.39 ± 0.19 s and dominantly fracture-parallel fast orientations. The crustal anisotropy measurements support the existences of mid/lower crustal flow in the southern Songpan-Ganzi Terrane and crustal shortening deformation beneath the Longmenshan fault zone"--Abstract, page iv.

Advisor(s)

Gao, Stephen S.
Liu, Kelly H.

Committee Member(s)

Wei, Mingzhen
Gertsch, Leslie S.
Song, Jianguo

Department(s)

Geosciences and Geological and Petroleum Engineering

Degree Name

Ph. D. in Geology and Geophysics

Sponsor(s)

National Science Foundation (U.S.)
Missouri University of Science and Technology

Publisher

Missouri University of Science and Technology

Publication Date

Summer 2016

Journal article titles appearing in thesis/dissertation

  • A systematic comparison of the transverse energy minimization and splitting intensity techniques for measuring shear-wave splitting parameters
  • Applicability of the multiple-event stacking technique for shear-wave splitting analysis
  • Crustal anisotropy and ductile flow beneath the eastern Tibetan Plateau and adjacent areas

Pagination

xii, 89 pages

Note about bibliography

Includes bibliographic references.

Geographic Coverage

Tibet

Rights

© 2016 Fansheng Kong, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Library of Congress Subject Headings

Shear waves -- Measurement
Anisotropy -- Analysis

Thesis Number

T 10961

Electronic OCLC #

958280829

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