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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: Electrical resistivity modeling around the Hidaka collision zone, northern Japan: regional structural background of the 2018 Hokkaido Eastern Iburi earthquake (Mw 6.6)

Fig. 4

Interpreted 3-D resistivity model. a Horizontal section of the inverted resistivity model at 14 km depth. Dashed lines show areas of sensitivity tests (where resistivity values were replaced). b Vertical cross-section beneath an east–west line around MT stations assembled from short east–west profiles shown as solid lines in a. Dotted line marks the horizontal position of a. c Interpreted seismic velocity section (from Iwasaki et al. 2004). The location of the seismic survey line corresponds closely to that of the MT survey line of this study. d Interpretations superimposed on the vertical cross-section of b. The red star denotes the hypocenter of the 2018 Hokkaido Eastern Iburi earthquake (Mw 6.6). The small circles denote hypocenters of earthquakes between 2001 and 2019. The red circles indicate hypocenters occurred after the 2018 Hokkaido Eastern Iburi earthquake. All hypocenters were determined by the Japan Meteorological Agency (2019). The C-2 is masked because of the low sensitivity

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