Zusammenfassung
The 26 December 2004 Sumatra-Andaman earthquake initiated slowly,
with small slip and a slow rupture speed for the first 40 to 60 seconds.
Then the rupture expanded at a speed of about 2.5 kilometers per
second toward the north northwest, extending 1200 to 1300 kilometers
along the Andaman trough. Peak displacements reached \~15 meters
along a 600-kilometer segment of the plate boundary offshore of northwestern
Sumatra and the southern Nicobar islands. Slip was less in the northern
400 to 500 kilometers of the aftershock zone, and at least some slip
in that region may have occurred on a time scale beyond the seismic
band. 10.1126/science.1112260
Nutzer