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Earth, Planets and Space
Fig. 1 | Earth, Planets and Space

Fig. 1

From: FDM simulation of earthquakes off western Kyushu, Japan, using a land–ocean unified 3D structure model

Fig. 1

Map of the Ryukyu Arc. The Okinawa Trough is a back-arc basin accompanying the Ryukyu Trench where the Philippine Sea (PS) plate is subducting beneath the Yangtze (YZ) plate. White arrows denote the motion of the PS plate relative to the YZ plate (DeMets et al. 2010). Red circles indicate the seismic activity studied in the northern Okinawa Trough from 11/14/2016 to 06/30/2016 (JST), with M JMA ≥2 and depths ≤30 km. The unified focal parameters determined by JMA are used. “N.I.” denotes Nakanoshima Island

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