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Earthquake risk on the Sunda trench

Nalbant, Suleyman S. and Steacy, Sandy and Sieh, Kerry and Natawidjaja, Danny and McCloskey, John (2005) Earthquake risk on the Sunda trench. Nature, 435 (7043). pp. 756-757. ISSN 0028-0836. doi:10.1038/nature435756a.

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On 28 March 2005 the Sunda megathrust in Indonesia ruptured again, producing another great earthquake three months after the previous one. The rupture was contiguous with that of the December 2004 Sumatra–Andaman earthquake, and is likely to have been sparked by local stress, although the triggering stresses at its hypocentre were very small — of the order of just 0.1 bar. Calculations show that stresses imposed by the second rupture have brought closer to failure the megathrust immediately to the south, under the Batu and Mentawai islands, and have expanded the area of increased stress on the Sumatra fault. Palaeoseismologic studies show that the Mentawai segment of the Sunda megathrust is well advanced in its seismic cycle and is therefore a good candidate for triggered failure.

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Sieh, Kerry0000-0002-7311-2447
Additional Information:© 2005 Nature Publishing Group.
Issue or Number:7043
Record Number:CaltechAUTHORS:20150318-143835538
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55900
Deposited By: Tony Diaz
Deposited On:18 Mar 2015 21:43
Last Modified:10 Nov 2021 20:51

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