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Earth, Planets and Space
Fig. 6. | Earth, Planets and Space

Fig. 6.

From: P-wave velocity structure in the southernmost source region of the 2011 Tohoku earthquakes, off the Boso Peninsula, deduced by an ocean bottom seismographic survey

Fig. 6.

The obtained P-wave velocity structures and the aftershock distribution (Shinohara et al., 2012) along the profile. The aftershocks within a 20-km-wide box on both sides of the profile are projected onto the seismic survey profile. Focal mechanisms determined by Shinohara et al. (2012) are also projected on the profile. Red circles indicate the hypocenters of the aftershocks, and diameters of circles correspond to magnitudes. The red and blue bars show the region which has a co-seismic slip greater than 4 m (Yoshida et al., 2011) and the region of the afterslip greater than 0.8 m as of December 2011 (Ozawa et al., 2011; Geospatial Information Authority of Japan, 2011).

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