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How Far Can A Tsunami Travel On Land. When a tsunami comes ashore, areas less than 25 feet above sea level and within a mile of. Large tsunamis are significant threats to human health, property, infrastructure, resources, and economies.

Japan earthquake and tsunami Aftershocks go on as 10k
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Tsunamis are not tidal waves. Where the ocean is deep, tsunamis can travel unnoticed on the surface at speeds up to 500 miles an hour (800 kilometers an hour), crossing an ocean in a day or less. Tsunamis are categorized as long waves, therefore, tsunami travel times can be computed with water depth as the only variable (murty, t.s., seismic sea waves tsunamis, bulletin 198) long waves are where the distance between wave crests is much greater than the water depth through which the wave is traveling.

Japan earthquake and tsunami Aftershocks go on as 10k

If you find that scary, be thankful you weren't around on the hawaiian island of molokai about 1.5 million years ago. Where the ocean is deep, tsunamis can travel unnoticed on the surface at speeds up to 500 miles an hour (800 kilometers an hour), crossing an ocean in a day or less. Tsunamis can travel as far as 10 miles (16 km) inland, depending on the shape and slope of the shoreline. In the deep ocean, tsunamis are barely noticeable but can move as fast as a jet plane, over 500 mph.