As one plate subducts below another (moves underneath), pressure builds for many years resulting in a section of the mega-thrust giving away. As this section gives away, it ruptures the ocean floor, r...
Although the magnitude 9. 0 quake on Mar. 11, 2011, apparently did not collapse high-rise buildings, the ensuing tsunamis flattened vast areas along the northeast coast. The death toll is swelling ste...