When you hear the news of an ‘approaching tsunami,’ you might have a slight shiver as to wondering whether it would hit the area where you live, if it is a coastal area. We all have an idea of how disastrous tsunamis can be because the picture the tsunami of 2004 that wreaked havoc on coastal populations and landscapes is still clear as a fear factor in our mind. The December 26, 2004, tsunami in the Indian Ocean claimed some 150,000 lives and cleared the landscape on millions of acres of oceanfront terrain. This article gives a clear picture of the various features of Tsunami.
Tsunami is a term from the Japanese and means ‘big wave in the port.’ It was coined by fishermen who returned to their ports in the evening after their villages and cities had been devastated by giant waves though they had not seen any waves on the open sea.
Tsunamis arise from the sudden displacement of gigantic water masses due to earthquakes on the seabed, volcanic eruption above and under water, and landslides or meteorite impacts. About 86 % of all tsunamis result from the so-called seaquakes. Tsunamis are a series of very long waves generated by any rapid, large-scale disturbance of the sea.
(Read the full part of this article in the March issue of Safety Messenger Magazine 2015)