Recovery of Love wave overtone waveforms and dispersion curves from single-station seismograms using time-warping

Brown, M. G.; Lin, G.; Matsuzawa, H.; Yoshizawa, K.

Recovery of Love wave overtone waveforms and dispersion curves from single-station seismograms using time-warping

Brown, M. G.; Lin, G.; Matsuzawa, H. et al.

Geophysical journal international, 2022, 230(1), 70-83

Permalink : https://hdl.handle.net/2115/86182

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アクセス権	open access
URI	https://hdl.handle.net/2115/86182
タイトル	Recovery of Love wave overtone waveforms and dispersion curves from single-station seismograms using time-warping
著者	Brown, M. G. ; Lin, G. ; Matsuzawa, H. ; Yoshizawa, K.
著者名 Brown, M. G.
著者名 Lin, G.
著者名 Matsuzawa, H.
著者名 Yoshizawa, K.
言語	英語
キーワード	Time-series analysis
	Guided waves
	Surface waves and free oscillations
発行日	2022-07
出版者	Oxford University Press
収録物名	Geophysical journal international
巻(号)	230(1)
ページ	70-83
抄録	Time-warping is a signal processing technique that, when applied to an isolated measurement of a transient signal that propagates in a waveguide, allows contributions to that signal from individual mode numbers to be isolated and extracted. Dispersion curves for individual mode numbers can, in turn, be recovered. Isolation of contributions associated with individual mode numbers is possible because after time-warping-a special environmentally dependent non-uniform sampling-is applied, the signal energy corresponding to each mode number is isolated in the frequency spectrum of the time-warped signal. Here we derive the time-warping transform for teleseismic Love waves, assuming the Earth structure is approximately known, and we illustrate the utility of time-warping using both synthetic and measured seismograms.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	This article has been accepted for publication in Geophysical Journal International ©: 2022 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
PISSN	0956-540X
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1093/gji/ggac048