Abstract

The results of interpretation of seismological, geological, geophysical, geodetic, and macroseis� mic data on the source zone of the catastrophic Tohoku earthquake with M = 8.8-9.0 (from different esti� mates), which occurred March 11, 2011 off the eastern coast of Honshu Island, are reported. Consideration of the seismotectonic features of the Western Pacific; the distribution of epicenters and hypocenters of the main shock, foreand aftershocks; the solution of foca l mechanisms of the strongest shocks; and the data on directions of lateral and vertical displacement of the island surface makes it possible to contour the source region, reconstruct the structure of the source in the subsurface, and estimate the deformation of the lithos� phere resulted from this great seismic event.

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