HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >

A reappraisal of regional surface wave tomography

Files in This Item:
j.1365-246X.2002.01682.x.pdf270.61 kBPDFView/Open
Please use this identifier to cite or link to this item:

Title: A reappraisal of regional surface wave tomography
Authors: Kennett, B. L. N. Browse this author
Yoshizawa, K. Browse this author →KAKEN DB
Keywords: dispersion
multimode analysis
surface wave tomography
waveform inversion
Issue Date: 2002
Publisher: wiley
Journal Title: Geophysical Journal International
Volume: 150
Issue: 1
Start Page: 37
End Page: 44
Publisher DOI: 10.1046/j.1365-246X.2002.01682.x
Abstract: A three-stage inversion scheme for surface wave tomography working with multimode phase dispersion as a function of frequency provides a means of combining a wide range of data in a common framework. The phase average approximation is applied directly to phase slowness and there is no need to invoke perturbation arguments for the interpretation of path-averaged velocity models derived from waveform inversion of surface waves. By treating such wave speed profiles as summaries of path specific dispersion behaviour it is possible not only to combine results from different style of inversion but also to provide maximum exploitation of Love and Rayleigh wave information. Inversions of all suitable waveforms can be undertaken in terms of isotropic models. Dispersion information from all paths is combined to form multimode phase speed distributions as a function of frequency in linearized inversion which takes account of path bending and finite frequency effects. The final inversion for 3-D wave speed structure is based on a cellular inversion of the multimode frequency dispersion including angular effects in terms of a local stratified model including anisotropy. The smoothing from inclusion of finite frequency effects and damping of the linearized inversion for the phase speed distributions will control the smoothness of the 3-D shear wave speed model.
Type: article
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

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University