Coast moved 8 feet, earth's rotation sped up 1.6 microseconds.
It "...caused a rupture 186 miles long and 93 miles wide in the sea floor 80 miles off the eastern coast of Japan. It happened 15 miles beneath the sea floor. The force of the quake was so strong that it moved the island of Honshu 8 feet to the east, said USGS geophysicist Ken Hudnut. It sped up the Earth's rotation by 1.6 microseconds, according to NASA.
