GENERAL GEOLOGY

Detailed explanation-1: -When a sudden displacement of a large volume of water occurs, or if the sea floor is suddenly raised or dropped by an earthquake, big tsunami waves can be formed. The waves travel out of the area of origin and can be extremely dangerous and damaging when they reach the shore.

Detailed explanation-2: -Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean, tsunami waves do not dramatically increase in height. But as the waves travel inland, they build up to higher and higher heights as the depth of the ocean decreases.

Detailed explanation-3: -tsunami, (Japanese: “harbour wave”) also called seismic sea wave or tidal wave, catastrophic ocean wave, usually caused by a submarine earthquake, an underwater or coastal landslide, or a volcanic eruption.

Detailed explanation-4: -The phenomenon we call tsunami is a series of large waves of extremely long wavelength and period usually generated by a violent, impulsive undersea disturbance or activity near the coast or in the ocean.

Detailed explanation-5: -Distant tsunami: Are generated from a long way away, such as from across the Pacific in Chile. Regional tsunami: Are generated between one and three hours travel time away from their destination. Local tsunami: Are generated very close to New Zealand.