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. 2017 Jul 10;7:4945. doi: 10.1038/s41598-017-04992-z

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Source parameter inversion for the mainshock. (a) Waveform fitting in the CAP inversion. The black and red traces are observed and synthetic velocity seismograms, respectively. (b) Waveform misfit versus centroid depth. The number above the small beach ball is the moment magnitude. Stations used in the inversion are indicated as dots on the large beach ball. Red line in the beachball indicates the preferred nodal plane, and the arrow indicates preferred rupture direction. (c) Observed (dots) and best-fitting (lines) azimuthal variation of the time shifts for Rayleigh wave (top) and Love wave (bottom). Blue and red dots indicate observed time shift without and with calibrations of a reference event, respectively. The curves show the predicted time shifts with rupture along the nodal plane with a strike of 107°. The figures are generated from GMT, which is an open source software available at: http://gmt.soest.hawaii.edu.