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海啸是一种灾难性的海浪，通常由震源在海底下面50km以内、里氏6.5级以上的海底地震引起。海底地震引起的震荡波在海面上可以500km／h～1000km／h的速度传播到很远的地方。当波浪进入大陆架后，由于海水变浅，波浪突然增高，高度可达数十米，形成“奔跑”的“水墙”，这种“水墙”蕴含着极大的能量，可以把巨轮抛向空中，一般的船只在它面前更是不堪一击。凶猛的波浪冲上陆地后所向披靡，会以摧枯拉朽之势
Tsunami is a catastrophic wave that is usually caused by an earthquake on the sea floor within 50 km below the seabed and above 6.5 on the Richter scale. The shock wave caused by the earthquake on the seabed can travel far away from the sea at speeds of 500km/h to 1000km/h. When the wave enters the continental shelf, the shallow seawater increases the height of the waves by up to several tens of meters, creating a “water wall” of “running”. This type of “water wall” contains enormous energy and can be thrown toward the sea. In the air, ordinary ships are even more vulnerable to attack. The fierce waves rush into the land and become irresistible.