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Volume 23, Issue 1
A New Earthquake Location Method Based on the Waveform Inversion

Hao Wu, Jing Chen, Xueyuan Huang & Dinghui Yang

DOI: 10.4208/cicp.OA-2016-0203

Commun. Comput. Phys., 23 (2018), pp. 118-141.

Published online: 2018-01

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  • Abstract

In this paper, a new earthquake location method based on the waveform inversion is proposed. As is known to all, the waveform misfit function under the L2 measure is suffering from the cycle skipping problem. This leads to a very small convergence domain of the conventional waveform based earthquake location methods. In present study, by introducing and solving two simple sub-optimization problems, we greatly expand the convergence domain of the waveform based earthquake location method. According to a large number of numerical experiments, the new method expands the range of convergence by several tens of times. This allows us to locate the earthquake accurately even from some relatively bad initial values.

  • Keywords

Computational seismology, inverse theory, waveform inversion, earthquake location.

  • AMS Subject Headings

49N45, 65K10, 86-08, 86A15

  • Copyright

COPYRIGHT: © Global Science Press

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  • TXT
@Article{CiCP-23-118, author = {Hao Wu, Jing Chen, Xueyuan Huang and Dinghui Yang}, title = {A New Earthquake Location Method Based on the Waveform Inversion}, journal = {Communications in Computational Physics}, year = {2018}, volume = {23}, number = {1}, pages = {118--141}, abstract = {

In this paper, a new earthquake location method based on the waveform inversion is proposed. As is known to all, the waveform misfit function under the L2 measure is suffering from the cycle skipping problem. This leads to a very small convergence domain of the conventional waveform based earthquake location methods. In present study, by introducing and solving two simple sub-optimization problems, we greatly expand the convergence domain of the waveform based earthquake location method. According to a large number of numerical experiments, the new method expands the range of convergence by several tens of times. This allows us to locate the earthquake accurately even from some relatively bad initial values.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2016-0203}, url = {http://global-sci.org/intro/article_detail/cicp/10522.html} }
TY - JOUR T1 - A New Earthquake Location Method Based on the Waveform Inversion AU - Hao Wu, Jing Chen, Xueyuan Huang & Dinghui Yang JO - Communications in Computational Physics VL - 1 SP - 118 EP - 141 PY - 2018 DA - 2018/01 SN - 23 DO - http://doi.org/10.4208/cicp.OA-2016-0203 UR - https://global-sci.org/intro/article_detail/cicp/10522.html KW - Computational seismology, inverse theory, waveform inversion, earthquake location. AB -

In this paper, a new earthquake location method based on the waveform inversion is proposed. As is known to all, the waveform misfit function under the L2 measure is suffering from the cycle skipping problem. This leads to a very small convergence domain of the conventional waveform based earthquake location methods. In present study, by introducing and solving two simple sub-optimization problems, we greatly expand the convergence domain of the waveform based earthquake location method. According to a large number of numerical experiments, the new method expands the range of convergence by several tens of times. This allows us to locate the earthquake accurately even from some relatively bad initial values.

Hao Wu, Jing Chen, Xueyuan Huang and Dinghui Yang. (2018). A New Earthquake Location Method Based on the Waveform Inversion. Communications in Computational Physics. 23 (1). 118-141. doi:10.4208/cicp.OA-2016-0203
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