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https://hdl.handle.net/10356/94599
Title: | Frictional afterslip following the 2005 Nias-Simeulue earthquake, Sumatra | Authors: | Hsu, Ya-Ju Simons, Mark Avouac, Jean-Philippe Galetzka, John Sieh, Kerry Chlieh, Mohamed Natawidjaja, Danny H. Prawirodirdjo, Linette Bock, Yehuda |
Keywords: | DRNTU::Science::Geology::Volcanoes and earthquakes | Issue Date: | 2006 | Source: | Hsu, Y. J., Simons, M., Avouac, J. P., Galetzka, J., Sieh, K., Chlieh, M., et al. (2006). Frictional afterslip following the 2005 Nias-Simeulue earthquake, Sumatra. Science, 312(5782), 1921-1926. | Series/Report no.: | Science | Abstract: | Continuously recording Global Positioning System stations near the 28 March 2005 rupture of the Sunda megathrust [moment magnitude (Mw) 8.7] show that the earthquake triggered aseismic frictional afterslip on the subduction megathrust, with a major fraction of this slip in the up-dip direction from the main rupture. Eleven months after the main shock, afterslip continues at rates several times the average interseismic rate, resulting in deformation equivalent to at least a Mw 8.2 earthquake. In general, along-strike variations in frictional behavior appear to persist over multiple earthquake cycles. Aftershocks cluster along the boundary between the region of coseismic slip and the up-dip creeping zone. We observe that the cumulative number of aftershocks increases linearly with postseismic displacements; this finding suggests that the temporal evolution of aftershocks is governed by afterslip. | URI: | https://hdl.handle.net/10356/94599 http://hdl.handle.net/10220/8671 |
DOI: | 10.1126/science.1126960 | Rights: | © 2006 American Association for the Advancement of Science. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | EOS Journal Articles |
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45. Frictional Afterslip Following the 2005 Nias-Simeulue Earthquake, Sumatra.pdf | 581.44 kB | Adobe PDF | View/Open |
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