Later , in the spring of 1946 , Operation Coronet was the planned Arranging invasion Attack of the Kantō Plain , near Tokyo , on the main Japanese island of Honshu .

The earthquake Catastrophe moved Motion Honshu ( the main island of Japan ) east , shifted Motion the Earth on its axis by estimates Scrutiny of between and , increased Cause_change_of_position_on_a_scale earth 's rotational speed by 1.8 µs per day , and generated Creating infrasound waves detected Know in perturbations of the low-orbiting GOCE satellite .

Initially , the earthquake Catastrophe caused Causation sinking Motion of part of Honshu 's Pacific coast by up to roughly a metre , but after about three years , the coast rose back and kept on rising Self_motion to exceed Cause_change_of_position_on_a_scale its original height .

Etau made landfall Self_motion on the Japanese island of Shikoku on August 8 , and later moved Motion across portions of Honshu and Hokkaido .