there have been many recents because the earth's plates are shifting, it is a good thing to have little earthquakes now and then to let us know that the earth is shifting, when we have a big one, that lets us know that the earths crust are pushing up against each other causing the earth to shake.
Tsunami's always come to Japan because of Earthquakes there. Most recent tsunami on March 11, 2011
California
7.0
no
they're just natural
their has been 6 earthquakes
Tsunamis do not have epicentres. Earthquakes do. Sometimes, as in the case of Japan, earthquakes cause tsunamis.
I can't really say in detail .....but it is most likely that its because there is a default in that area ....like in California ..there are several defaults there and thousands of earthquakes occur each day there. BECAUSE its a active earthquake zone." :D Earthquakes also occur in Alaska and also; off the coast of Mexico....
If you answer your own question, no one will ever know it hasn't been answered -.- No, earthquakes come from the tectonic plates underneath the earth's surface. They rub, grind, and collide. This allows for volcanoes, mountains, and earthquakes.
The Arabian plate is colliding with the Eurasian plate and pushing up the mountains and plateaus of Turkey and Iran. These same movements often result in earthquakes.
Iceland regularly has small earthquakes. There has been no significant earthquake reported for Iceland in last 30 days. You can list of earthquakes in Iceland during the last 48 hours in related link below. The largest most recent earthquakes in Iceland occurred on June 17 and 21, 2000.
they necessarily don't