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|Title:||Frictional afterslip following the 2005 Nias-Simeulue earthquake, Sumatra||Authors:||Hsu, Ya-Ju
Natawidjaja, Danny H.
|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
|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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