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The Tohoku earthquake mistake is a complex mosaic , with patches that stick and patch up that slide smoothly . Though the entire fracture ruptured , or broke aside , during the earthquake , some parts moved in different ways . The deeper part of the error careen cursorily , while the shallow part , very near the surface , slide slowly .
The Japan Trench is the result of the Pacific Ocean plate press down under the continental plate carrying the islands of Japan . The downward movement is call subduction .
Huge stresses beneath the surface moved plates of the Earth’s crust hundreds of feet horizontally and dozens of feet vertically.
When tension due to subduction is all of a sudden released , an quake occurs .
Along the fault , the two plates of Earth ’s crust slide past each other up to 260 feet ( 80 meters ) , according to some study .
The Tohoku quake revoke the seafloor by 30 feet ( 10 m ) over an area the sizing of Connecticut .
The erect displacement of seawater was the campaign of the tsunami that expanded away from the earthquake site .
The magnitude 9.0 Tohoku - Oki earthquake was the most powerful seism known to hit Japan and the fifth - most powerful temblor ever recorded . The earthquake triggered a tsunami that kill thousands of people . The Fukushima Daiichi atomic power works was damaged by tsunami implosion therapy , induce multiple meltdown and a monumental acquittance of radioactivity .
