Combined Inversion of Early Arrival P-wave and Rayleigh Wave with Cross-gradient Constraint

DOI

10.2991/iceeg-16.2016.83How to use a DOI?

Keywords

combined inversion, rayleigh wave

Abstract

We present a combined early arrival P-wave and Rayleigh wave inversion strategy that uses the cross-gradient between the P-velocity and S-velocity as a regularization term. First, the P-velocity model is inverted by the early arrival full wave inversion (FWI) method. Then the magnitude spectra of the surface waves in the frequency-wavenumber domain are inverted for the S-velocity model with a cross-gradient constraint. This constraint regularization insists that the S-velocity gradient is closely parallel to that of the P-velocity gradient. Results show that cross-gradient regularization provides a significant reduction in artifacts in the S-velocity tomogram.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Lei Fu
AU  - Sixin Liu
PY  - 2016/06
DA  - 2016/06
TI  - Combined Inversion of Early Arrival P-wave and Rayleigh Wave with Cross-gradient Constraint
BT  - Proceedings of the 7th International Conference on Environment and Engineering Geophysics & Summit Forum of Chinese Academy of Engineering on Engineering Science and Technology
PB  - Atlantis Press
SP  - 308
EP  - 311
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceeg-16.2016.83
DO  - 10.2991/iceeg-16.2016.83
ID  - Fu2016/06
ER  -