PBS
Wnet: Thirteen: Savage Earth: Waves of Destruction: Tsunami
This series of three articles (links) give basic information, describe the different causes of tsunamis, warning systems, past tsunamis and the evidence and destruction left by these waves. Animations are provided that illustrate...
US Geological Survey
Usgs: Tsunami & Earthquake Research
The USGS provides an extensive section of information about tsunamis. The items presented are the basics of tsunamis regarding the Great San Francisco earthquake of April 18, 1906, tsunamis in the U.S. Pacific Northwest, and the 1998...