2011年3月12日土曜日

Earthquake! (3)

From a scientific viewpoint, this is interesting. Usually, after a tsunami, the floodwaters flow back to the sea. This is when the big damage occurs. This time, a day later, the seawater that flowed in from the tsunami is still covering huge swaths of land.

Why?

Apparently, ground level subsided about 70 centimeters. That's close to shoulder height, using an adult as a measuring stick. Ground level hasn't rebounded. If the sun dries up the water, and all that weight is removed, will it rebound? If the earth's natural elasticity kicks in, will it rebound?

It would be nicer if this were a lab experiment, not something being experienced in real time by real people for the first time in Japan's recorded geological history.