title: Seismology: energy radiation from the Sumatra earthquake.
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.
authors.affiliation: School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China. sdni@ustc.edu.cn
authors.forename: Sidao
authors.initials: S
authors.lastname: Ni
authors.forename: Hiroo
authors.initials: H
authors.lastname: Kanamori
authors.forename: Don
authors.initials: D
authors.lastname: Helmberger