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Earth, Planets and Space
Fig. 7 | Earth, Planets and Space

Fig. 7

From: Precise aftershock distribution of the 2019 Yamagata-oki earthquake using newly developed simple anchored-buoy ocean bottom seismometers and land seismic stations

Fig. 7

Final hypocenter distribution (July 5–July 13, 2019) obtained using the DD method with bathymetry. The inverted triangles indicate the position of the anchored-buoy OBSs and the land seismic stations close to the source region. The circles filled with color represent hypocenters. The depth of events is color-coded. The diameter of the circles is proportional to magnitude. A star indicates the position of the mainshock estimated by the NIED. Contours indicate iso-depth of the seafloor. A plane view is rotated counterclockwise by 23°. In the vertical section, the concentration of aftershocks at depth of 2.5 km to 10 km is clearly recognized. From the NNW–SSE vertical cross section, the aftershocks become deeper to the northwest

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