Not 1, but 2 great earthquakes caused 2009 Samoa-Tonga tsunami disaster
Thursday, August 19, 2010 - 05:28
in Earth & Climate
Scientists studying the massive earthquake that struck the South Pacific on September 29, 2009, have found that it actually involved two great earthquakes: an initial one with magnitude 8.1, which then triggered another magnitude 8 earthquake seconds later on a different fault. The details of this rare event, called a 'triggered doublet,' are unlike anything seismologists have seen before...