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Brief Communications
Nature 434, 582 (31 March 2005) | doi:10.1038/434582a; Published online 30 March 2005
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Seismology: Energy radiation from the Sumatra earthquake
Sidao Ni1,2, Hiroo Kanamori2 & Don Helmberger2
Abstract
We determined the duration of high-frequency energy radiation from Indonesia's great Sumatra–Andaman earthquake (26 December 2004) to be about 500 seconds. This duration can be translated into a rupture length of about 1,200 km, which is more than twice as long as that inferred from body-wave analyses performed soon after the event. Our analysis was able rapidly to define the extent of rupture, thereby aiding the assessment of seismic hazard in the immediate future.
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
- Tectonics Observatory, California Institute of Technology, Pasadena, California 91125, USA
Correspondence to: Sidao Ni1,2 Email: sdni@ustc.edu.cn
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