Question

When the Tohoku earthquake occurred, as much as 30 meters of the Pacific plate was subducted westward under the Okhotsk plate, upon which sits the island nation of Japan. The crust of the Okhotsk plate directly west of the plate boundary bulged upward. In light of this, what is a possible explanation for the uplift indicated in red just west of the plate boundary?

Answer 1

Refer below.

Step-by-step explanation:

DURING the quake, a huge piece of the Pacific plate was pushed under the Okhotsk plate. This both lifted and distorted the edge of the Okhotsk plate.