Question

Though Japan has the densest seismic network, Indonesia has the most number of earthquakes. Why?

Answer 1

1. The whole of Japan is in a very active seismic area, and it has the densest seismic network in the world.
2. Indonesia is in a very active seismic zone, but by virtue of its larger size than Japan, it has more total earthquakes.
3. It is in extremely active seismic areas along subduction zones.