The most dense layer of the atmosphere is the troposphere is the most dense layer because it is at the bottom of the atmosphere. The troposphere is where all our weather happe â¦ ns. It also has the highest air pressure. But more specifically, the earths atmosphere is most dense at the surface.
Earthquakes on faults like these may cause tsunamis in the Puget Sound region. 'Deep' faults Deep faults can occur where two tectonic plates collide and one of the plates is forced beneath the other.
The Asian tsunami of 2004 was caused by tectonic activity beneath the Indian Ocean. A fault twenty miles below the ocean surface ruptured, forcing one of the plates to be thrust upwards by as much as 40 feet. The ocean above was forced upwards and the displaced water moved out as a series of giant ripples.