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

Fig. 4

From: A 3D electrical resistivity model around the focal zone of the 2017 southern Nagano Prefecture earthquake (MJMA 5.6): implications for relationship between seismicity and crustal heterogeneity

Fig. 4

a Topographic map with surface geology based on (Geological Survey of Japan 2015) b Horizontal cross section of the inverted 3D resistivity model. Magenta diamonds denote MT sites. Circles denote hypocenter locations of earthquakes that occurred between 2012 and 2017, manually estimated by Nagoya University (2017). Red and white circles indicate epicenters before and after the MJMA5.6 earthquake on June 25, 2017, respectively. Area enclosed by white dashed lines shows the uniformly filled area with 300 Ω-m in the sensitivity tests. Note that only model blocks with resistivity less than 300 Ω-m are filled in the tests. Elevations are defined relative to sea level

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