Question

why earthquake occurs generally in japan many times

Answer 1

Answer:-

Yes right earthquake occurs generally in japan many times but in the Tokyo

Reason :-

Japan is located right on an active subduction zone of the coast. Subduction zones cause major earthquakes all the time. The 2011 earthquake was from the subduction zone. And if your wondering why the subduction zone is so active, well one there has been many earthqaukes in the past 20 years due to crustal movement and that could be a big cause of the cluster of earthquakes lately in Japan. Also Japan is still having aftershocks from the 2011 earthqauke. So you can definitly expect more earthquakes from that area.

Best of luck

Answer 2

Because Japan is located along the Pacific Ring Of Fire which is the most active earthquake belt in the world.