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Title: Earthquake risk on the Sunda trench
Authors: Nalbant, Suleyman S.
Steacy, Sandy
Sieh, Kerry
Natawidjaja, Danny H.
McCloskey, John
Keywords: DRNTU::Science::Geology::Volcanoes and earthquakes
Issue Date: 2005
Source: Nalbant, S. S., Steacy, S., Sieh, K., Natawidjaja, D., & McCloskey, J. (2005). Earthquake risk on the Sunda trench. Nature, 435, 756-757.
Series/Report no.: Nature
Abstract: 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.
Rights: © 2005 Nature Publishing Group.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EOS Journal Articles

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