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What are the factors , causes , mitigation stategies and mitigation value to society of earthquake , cyclone , floods and tsunami?



• A tsunami is a series of waves with a long wavelength and period (time between crests). Time between crests of the wave can vary from a few minutes to over an hour. • Tsunamis are often incorrectly called tidal waves; they have no relation to the daily ocean tides. • Tsunami (soo-NAH-mee) is a Japanese word meaning harbour wave. • Tsunamis can occur at any time of day or night.
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