A tsunami is like a shallow water wave, but in the whole water column, with gravity as the restoring force, not pressure.I feels the water depth, even in water several kilometres deep where it can move up to 900 km/hr yet be only a few centimetres high.The waves speed and wavelength decrease or increase as it reaches shallow water?

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The Answer of A tsunami is like a shallow water wave, but in the whole water column, with gravity as the restoring force, not pressure.I feels the water depth, even in water several kilometres deep where it can move up to 900 km/hr yet be only a few centimetres high.The waves speed and wavelength decrease or increase as it reaches shallow water?

A Tsunami Is Like a Shallow Water Wave, but in the Whole