A tsunami that hit Okushiri Island, Japan, in 1993 stopped clocks, like the one showed here, thus recording the wave's travel time from the earthquake in Alaska that generated it.

Article: A Deadly Force | Sidebar One: Catching a Tsunami in the Act | Sidebar Two: Remembrance of Waves Past | ANIMATION
Hell's Crust: Our Everchanging Planet  |  The Restless Planet: Earthquakes
Out of the Inferno: Volcanoes  | Waves of Destruction: Tsunamis