People think of quakes as being relatively uncommon events. They're not. Even if you restrict yourself to quakes of magnitude 2.5 and greater, there's less than an hour between quakes.
Typically, there will be a strong quake, and then a series of six to twenty lesser quakes over the next couple of days. In Japan, though the news media is saying little about it, they are still experiencing very strong quakes, really frequently. A few days ago, they were mostly in the magnitude 5-7 range, and they have finally dropped to the point where many of them are in the 4-5 range, although there are as many in the 5-6 range.
And instead of Japan's quakes amounting to 80% of the world's quakes, the percentage has finally dropped. In this listing of recent quakes, you'll see "east of Honshu" given as a location; that's where the Big One hit. The date/time stamp is Lancaster PA time.
When will it all end? Never....
Other Bloggers On Related Topics:
earthquakes - Honshu - Japan - USGS