|Map of Indonesia; the red square near Jakarta shows the|
location of the 2012 M8.2 aftershock
From this site.
Today's M6.1 quake was at about 1:00 to the NE of the
epicenter of the 2004 quake (shown as the big
bull's eye on the left) in the center of the tip of
The 2004 event was located about 100 miles off the western coast of northern Sumatra at a depth of 19 miles below sea level (today's event was, in contrast, only about 6 miles deep and was centered below land; see map and caption). A huge section of length 810 miles ruptured during this quake. The main rupture was followed by secondary faulting (dubbed "pop up faults" on Wiki" that acted in concert with the main rupture to produce the massive tsunami that caused so much destruction around the Asian Pacific Rim. The total length of all of the faulting, which took place over several minutes, was about 1000 miles.