|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >
Recovery of Love wave overtone waveforms and dispersion curves from single-station seismograms using time-warping
| Title: | Recovery of Love wave overtone waveforms and dispersion curves from single-station seismograms using time-warping |
| Authors: | Brown, M. G. Browse this author | | Lin, G. Browse this author | | Matsuzawa, H. Browse this author | | Yoshizawa, K. Browse this author |
| Keywords: | Time-series analysis | | Guided waves | | Surface waves and free oscillations |
| Issue Date: | Jul-2022 |
| Publisher: | Oxford University Press |
| Journal Title: | Geophysical journal international |
| Volume: | 230 |
| Issue: | 1 |
| Start Page: | 70 |
| End Page: | 83 |
| Publisher DOI: | 10.1093/gji/ggac048 |
| Abstract: | 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. |
| Rights: | 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. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86182 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 吉澤 和範
|
