I read that there is a displacement between 2 (oceanic) tectonic plate and this drop cause a big potential energy on the wave directly above, I don't buy it because obviously many video footages showed the amplitude of the tsunami gradually becomes bigger as it moves towards the shore? What's going on where do the energy come from?
Asked
Active
Viewed 276 times
1 Answers
3
Why amplitude of tsunami increases as it travels ashore?
The energy for the tsunami is given by "a displacement between 2 (oceanic) tectonic plates", this happens at depth and the energy is carried by the whole column of water, from surface to bottom of the sea at the point of the displacement.
As the distortion travels to shallower waters, that energy is expressed with a higher amplitude of the tsunami wave. See this for example :
It is conservation of energy and fluid dynamics after all.
anna v
- 236,935