Order events chronologically that can lead to a subduction-related tsunami
Which tectonic plate are responsible for tsunamis?
Below is the order of the things that can lead to a tsunami caused by subduction.
1. The overriding plate “sticks” to the subducting slab
2. The overriding plate deforms, and strain builds
3. Slip occurs and the overriding plate moves back into position, displacing a large amount of the seafloor
4. A bulge of water is created at the sea surface and spreads out as a series of waves
In a subduction zone, an earthquake happens when the leading edge of the plate that is being pushed under breaks free and springs out into the sea, lifting the sea floor and the water above it. A tsunami is caused by this rise. At the same time, the bulge behind the leading edge falls apart. This makes the plate thinner and lowers areas near the coast.