Higher modes of surface waves in microtremor analysis

Tatsunori Ikeda, Toshifumi Matsuoka, Takeshi Tsuji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We usually analyzed microtremors using a fundamental mode only. However, recent studies demonstrated that higher modes should be considered in SPAC method. In order to investigate this theoretically, we simulate microtremors numerically and applied the proposed method using higher modes. Also we applied this method to field data. In this method, we calculated apparent phase velocity from phase velocity and amplitude of higher modes, and compare the apparent velocity with the observed phase velocity. Since the phase velocity obtained from simulated data and field microtremor data is well consistent with the apparent phase velocity, the analysis method using the apparent velocity works well in S-wave velocity estimation.

Original languageEnglish
Title of host publicationSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010
PublisherSociety of Exploration Geophysicists
Pages2034-2038
Number of pages5
ISBN (Print)9781617389801
Publication statusPublished - Jan 1 2010
Externally publishedYes
EventSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010 - Denver, United States
Duration: Oct 17 2010Oct 22 2010

Publication series

NameSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010

Other

OtherSociety of Exploration Geophysicists International Exposition and 80th Annual Meeting 2010, SEG 2010
CountryUnited States
CityDenver
Period10/17/1010/22/10

All Science Journal Classification (ASJC) codes

  • Geophysics

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