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Published December 12, 2008 | public
Journal Article

Earthquake Supercycles Inferred from Sea-Level Changes Recorded in the Corals of West Sumatra

Abstract

Records of relative sea-level change extracted from corals of the Mentawai islands, Sumatra, imply that this 700-kilometer-long section of the Sunda megathrust has generated broadly similar sequences of great earthquakes about every two centuries for at least the past 700 years. The moment magnitude 8.4 earthquake of September 2007 represents the first in a series of large partial failures of the Mentawai section that will probably be completed within the next several decades.

Additional Information

© 2009 American Association for the Advancement of Science. 22 July 2008; accepted 8 October 2008. This work has been supported by NSF grants EAR-9628301, 9804732, 9903301, 0208508, 0530899, 0538333, and 0809223 (to K.S.) and EAR-0207686 and 0537973 (to R.L.E.); by National Science Council grants 94-2116-M002-012 and 95&96-2752-M002-012-PAE (to C.-C.S.); by LIPI (Indonesian Institute of Science) and RUTI (International Joint Research Program of the Indonesian Ministry of Research and Technology); and by the Gordon and Betty Moore Foundation. This is Caltech Tectonics Observatory contribution number 86 and Earth Observatory of Singapore contribution number 1.

Additional details

Created:
August 20, 2023
Modified:
October 18, 2023