Persistent elastic behavior above a megathrust rupture patch : Nias island, West Sumatra

• Main Authors: Sieh, Kerry, Galetzka, John, Prayudi, Dudi, Suprihanto, Imam, Sastra, Nugraha, Briggs, Richard W., Amidon, William H., Suwargadi, Bambang W., Natawidjaja, Danny H., Farr, Thomas G.
• Format: Article
• Language: English
• Published: 2012
• Subjects: DRNTU::Science::Geology::Volcanoes and earthquakes
• Online Access: https://hdl.handle.net/10356/98362; http://hdl.handle.net/10220/8481
• Institution: Nanyang Technological University

We quantify fore-arc deformation using fossil reefs to test the assumption commonly made in seismic cycle models that anelastic deformation of the fore arc is negligible. Elevated coral microatolls, paleoreef flats, and chenier plains show that the Sumatran outer arc island of Nias has experienced a...