Question

What do you notice about the distribution of earthquakes

Answer 1

Almost all earthquakes occur in very narrow bands along oceanic ridges and transform faults, along continental transcurrent faults, or in broader zones below and behind island arcs. The depth distribution of earthquakes is also very limited. Almost all seismic energy is released in the crust2.

Answer 2

Earthquakes are not randomly distributed around the earth, rather they are located in distinct zones which can be related to the margins of tectonic plates on the Earth's surface.