Path-specific velocity structure of Western China from surface-wave dispersion

Brett S. Ketter, Aaron A. Velasco, Charles James Ammon, George E. Randall

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We develop one-dimensional (1-D) path-specific velocity models in western China using new Rayleigh and Love wave group and phase velocity dispersion measurements for 20 events in the region. The earthquakes were grouped into three geographic clusters from which we compute the average phase and group velocity dispersion. We invert the average dispersion curves simultaneously for 1-D shear-velocity models appropriate for the three central Asian paths, using three previous shear-velocity models as initial models. The models are validated by forward modeling waveforms of recent events. The crustal thickness beneath western China in the vicinity of the Lop Nor test site is 50-60 km and our velocity models are consistent with major geologic features (e.g., basins and mountain ranges) and previous structural models for this region.

Original languageEnglish (US)
Pages (from-to)1235-1255
Number of pages21
JournalPure and Applied Geophysics
Volume163
Issue number7
DOIs
StatePublished - Jul 1 2006

Fingerprint

wave dispersion
velocity structure
Surface waves
surface wave
surface waves
China
phase velocity
group velocity
shear
Love waves
wave group
Love wave
Group velocity dispersion
Rayleigh waves
Rayleigh wave
forward modeling
crustal thickness
Phase velocity
mountains
waveforms

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

Cite this

Ketter, Brett S. ; Velasco, Aaron A. ; Ammon, Charles James ; Randall, George E. / Path-specific velocity structure of Western China from surface-wave dispersion. In: Pure and Applied Geophysics. 2006 ; Vol. 163, No. 7. pp. 1235-1255.
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Path-specific velocity structure of Western China from surface-wave dispersion. / Ketter, Brett S.; Velasco, Aaron A.; Ammon, Charles James; Randall, George E.

In: Pure and Applied Geophysics, Vol. 163, No. 7, 01.07.2006, p. 1235-1255.

Research output: Contribution to journalArticle

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