(Sorry, I didn’t get this info up earlier, but better late than never.)
Here’s a link to the NY Times interactive website that explains the geology behind the Japan Earthquake.
Check here to see the satellite footage of the terrible devastation left behind by the tsunami that followed.
Check out the time-lapse of the Japan quake which shows all the after shocks as well.
If you’d like to help with donations for relief efforts, check out the Japanese Cultural and Community Center of Northern California. 100% of your donations will go to local non-profit and community service organizations in Japan for citizen to citizen relief efforts reaching those most in need in the most affected areas.