Originally Posted by KRL

To put this event in perspective, it was the equivalent force of 60 Tilllion Pounds of TNT going off. In comparison a nuclear bomb is only 30 Million Tons.

620 Miles of the earth's sea floor bottom shifted violently upward which caused the enormous displacement of the ocean's water.

A lot of people don't realize that we're all just floating on massive plates of rocks. These plates push against each other in opposing directions and eventually something has to give and crush from the pressure. This is when the big quakes occur.