Mw 9.3 earthquake in Sumatra on December 26th, 2004 at 00:58 UTC

Spatial and temporal aftershocks distribution
from 26/12/2004 to 28/03/2005

A change in the pattern of distribution of the aftershocks is observed since January 26th. A cluster centered on Nicobar Islands appears.

Aftershocks Statistics

• Source Rupture Process of Sumatra earthquake
• Rupture during 8 minutes propagating to the NNW for the Sumatra-Andaman Islands Earthquake
• Understanding Giant Thrust of West coast of N. Sumatra Earthquake
• Aceh Tsunami
• Tsunami characteristisc and simulation
• Satellite pictures before and after the tsunami (pps)
• International Chater "Space and major disasters"
• Satellite pictures acquired and processed by CRISP, National University of Singapore
• Recording of the Sumatra earthquake with the superconducting gravimeter from the station Walferdange, Luxembourg
• Animated aftershocks sequences on GFZ web site

Main shock location

Moment Tensors of the main shock

Harvard Moment Tensors

USGS Moment Tensors

Donation to aid victims of Asia's tsunami

• Red Cross
• International Federation of Red Crescent
• UNICEF
• UN launches unprecedented multiple effort to aid victims of Asia's devastating tsunami

More information on

• USGS
• West Coast & Alaska Tsunami Warning Center - Latest Tsunami Bulletin
• Pacific Tsunami Warning Center - Latest Tsunami Bulletin
• Waveform data available at ORFEUS