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

Fig. 4

From: Large intraslab earthquake (2011 April 7, M 7.1) after the 2011 off the Pacific coast of Tohoku Earthquake (M 9.0): Coseismic fault model based on the dense GPS network data

Fig. 4

Location of the estimated fault plane and aftershocks of the M 9.0 and M 7.1 earthquakes. Along the cross-section is shown by line A-A′ in Fig. 3 (a). Small black circles and blue circles represent the aftershocks determined by the JMA between 11 March and 10 April, 2011, and between the 7 April earthquake and 10 April, 2011, respectively. The red thick line denotes the location of the estimated fault plane of the M 7.1 event. The black and gray thick lines along the Pacific plate surface denote portions of the fault plane having 10-m- and 5-m-fault slips (Iinuma et al., 2011), respectively. The blue and red arrows denote the slip directions of the M 9 earthquake and the M 7.1, April 7, event, respectively. The gray arrows illustrate the background stress field in the subducting plate. The gray dashed line indicates the neutral stress plane by Kita et al. (2010). The protractor indicates the angle from the subducting plate interface.

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