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Earth, Planets and Space
Fig. 8. | Earth, Planets and Space

Fig. 8.

From: Deep structure of the Ou mountain range strain concentration zone and the focal area of the 2008 Iwate-Miyagi Nairiku earthquake, NE Japan—seismogenesis related with magma and crustal fluid

Fig. 8.

(a) V s perturbation at a depth of 24 km. Small crosses denote the hypocenters. White star and small circles denote the mainshock and the aftershocks of the 2008 earthquake, respectively. Triangles and bold red lines denote Quaternary volcanoes and active faults, respectively. Brackets marked with W and E show the locations of low-velocity zones (and seismic belt in upper crust) beneath the volcanic front and the forearc region, respectively. (b), (c), (d), and (e) East-west vertical cross sections are shown. The location of each cross section is shown on the left of (a). Small crosses denote the hypocenters within 0.05 degrees from each cross section. Triangles and red boxes denote Quaternary volcanoes and active faults, respectively. The thin broken line denotes the Moho discontinuity (Zhao et al., 1990).

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