Fig. 6.

The source model composed of four SMGAs shown in the map. The large and small solid stars indicate the epicenters of the mainshock and EGF events, both determined by JMA, respectively. The blue open stars represent the rupture starting points of SMGAs. Solid triangles indicate the strong motion stations used in the grid search. The broken rectangle indicates the source fault plane of the 2011 Tohoku earthquake, from Suzuki et al. (2011). The broken contour lines represent the depth of plate interface from Nakajima and Hasegawa (2006) and Nakajima et al. (2009) with an interval of 10 km.