A Brief Note On The Largest Tsunami Wave Essay

1266 Words Dec 8th, 2014 null Page
Sidebar: The largest tsunami wave ever recorded happened in 1958. An earthquake triggered a massive rockslide on the shore of Lituya Bay in southeast Alaska. Almost forty million tons of rocks splashed into bay. The sudden impact generated a tsunami that crashed against the other shoreline, flooding the area. The local tsunami traveled down the length of the bay and into the Gulf of Alaska, taking millions of trees as it blasted through the water. The wave reached a run-up height of 1,720 feet. A run-up height is the most height a wave reaches onshore before it starts to recede, or go back. This kind of tsunami is sometimes called a splash wave. Splash waves are caused by objects splashing into the sea and displacing the water.
All waves are caused by a release of energy. An ocean wave is driven by wind energy. A windstorm can create devastating ocean waves and storm surges. A tidal wave is a wave that is caused by the pull of gravity from the Sun and Moon. But a tsunami wave is not the same as a normal ocean wave or a tidal wave. They are both confined to the surface water. A tsunami wave gets its energy from the entire column of water, from the seafloor up. This gives a tsunami wave a huge amount of energy compared to a normal wave. A tsunami wave also has a greater wavelength, giving it the strength to reach farther ashore. Playing in a five-foot normal wave can be fun. But a five-foot tsunami wave can be so powerful it can knock people right off their feet. Then it can…

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