[…] when water is moving at 30 or 40 miles an hour, like the tsunami that inundated northern Japan on Friday, the heaviness of water turns deadly. Imagine 1,700 pounds hitting you at that speed, and each cubic yard of water as another 1,700 pounds bearing down on you. The destructiveness of a tsunami is not just one runaway car, but a fleet of them. […]
Japan Earthquake - Q&A with USGS on USTREAM: Open discussion with USGS scientists on the 8.9 Japan earthquake.
Very good Q&A. Worth to watch.