GEOLOGY

Detailed explanation-1: -An earthquake along a subduction zone happens when the leading edge of the overriding plate breaks free and springs seaward, raising the sea floor and the water above it. This uplift starts a tsunami.

Detailed explanation-2: -Most tsunamis are caused by earthquakes on converging tectonic plate boundaries.

Detailed explanation-3: -Tsunamis can be generated when a landslide displaces the water from above (subaerial) or below (submarine). Tsunami generation depends on the amount of landslide material that displaces the water, the speed it is moving, and the depth it moves to.

Detailed explanation-4: -Most tsunami are caused by large earthquakes on the sea floor when slabs of rock move past each other suddenly, causing the overlying water to move. The resulting waves move away from the source of the earthquake event.