Acknowledgments
We thank the editor Rachel Abercrombie, Giuliana Rossi, and an anonymous reviewer for their constructive comments, which improved the manuscript. KY thanks Dapeng Zhao for the information of seismic velocity structure in Kyushu. In this study, hypocenter and P- and S-wave data reported in the unified catalog of the JMA (https://www.data.jma.go.jp/svd/eqev/data/bulletin/index_e.html) were used. The seismograms were collected and stored by the JMA, National Universities, and National Research Institute for Earth Science and Disaster Resilience (http://www.hinet.bosai.go.jp/?LANG=en). The figures in this paper were created using GMT (Wessel & Smith, 1998). This research was supported by JSPS KAKENHI Grant Number JP 17K1437. The results obtained for the hypocenters, focal mechanisms, and coseismic slip distribution are available at http://www.aob.gp.tohoku.ac.jp/~yoshida/pub/JGR2020b/.