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Promoting Disaster-resilient Communities: The Great Sumatra–Andaman Earthquake of 26 December 2004 and the Resulting Indian Ocean Tsunami

The human casualties and socio-economic damage associated with the Great Sumatra–Andaman Earthquake of 26 December 2004 and the resulting Indian Ocean tsunami are discussed. The Sumatra–Andaman earthquake was the largest earthquake to occur since the advent of global digital seismometry and it produced the most devastating tsunami in recorded history (and the largest humanitarian response). A reliable Indian Ocean Tsunami Warning and Mitigation System is shown to require an improved seismographic network, a real-time sea-level observing network covering the entire Indian Ocean basin, and the deployment of deep-ocean pressure sensors. It is concluded that Indian Ocean governments can achieve more tsunami-resilient communities by addressing poverty, promoting education, harnessing technological advances, investing in emergency medical and rescue services, and empowering stakeholders.