The Size Difference of Tsunamis

The Size Difference of Tsunamis

A tsunami is a catastrophic ocean wave, usually caused by a submarine earthquake, an underwater or coastal landslide, or a volcanic eruption. Waves radiate outward from the generating impulse at speeds of up to 500 miles (800 km) per hour, reaching maximum heights of 100 feet (30 metres) near coastal areas. Although often called tidal waves, the occurrence of tsunamis have no connection with tides. The word tsunami is Japanese for “harbour wave.”

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