The world's fifth-largest earthquake of the magnitude of 9.0 on the Richter Scale occurred at 00:58:50 (GMT) on Sunday, December 26, 2004, off western coast of Northern Sumatra, Indonesia.
The earthquake generated a speeding tsunami that crashed into Sri Lanka, India, Thailand, Malaysia and the Maldives, which killied tens of thousands of people.

Links to Information on Asian Earthquake and Tsunami
Information by OCHA ReliefWeb
Situation Map of Asian Earthquake and Tsunami by OCHA ReliefWeb (pdf file)
Preliminary Earthquake Report
by U.S. Geological Survey, National Earthquake Information Center
Information by WHO on South Asia Tsunami & Earthquake
Information Summary by Research Group on The Earthquake Tsunami, Northern Sumatra, Indonesia
Researches on tsunami disaster including recent data and photographs from the Aceh province of Northern Sumatra, as well as news quoting comments by the USC's leading professors on tsunami
by Tsunami Research Group, Department of Civil Engineering at the University of Southern California
Seismic data, maps and surveys
by Tsunami Laboratory, Institute of Computational Mathematics and Mathematical Geophysics
Siberian Division, Russian Academy of Sciences
Satellite Images of Tsunami Sites by Digital Globe
News Search by Google
Reuters AlertNet (South Asia quake and tsunamis)
BBC News (In depth: Asia Quake Disaster)
CNN News (Tsunami Disaster)

Links to Information on Asian Earthquake and Tsunami collected by ADRC
India Maldives
Indonesia Sri Lanka
Malaysia Thailand

Activities of ADRRN (Asian Disaster Reduction and Response Network) NGO Members in the field