Small interplate coupling in the Tokai area
Heki, K. and S. Miyazaki, Geophys. Res. Lett., 28, 2313-2316, 2001.
The North American (green part) and the Amurian Plates (red part) collide
with each other in Central Japan (left panel). The northernmost part of the Philippine
Sea Plate behaves separately as the Izu microplate. These two factors
significantly reduce the subduction rate at the easternmost segment of the
Nankai-Suruga Trough, making the recurrence interval of the Tokai segment
rupture longer than other parts (right panel).