Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/95545
Title: Near-field propagation of tsunamis from megathrust earthquakes
Authors: McCloskey, John
Antonioli, Andrea
Piatanesi, Alessio
Sieh, Kerry
Steacy, Sandy
Cocco, Massimo
Giunchi, Carlo
Huang, Jian Dong
Dunlop, Paul
Nalbant, Suleyman S.
Keywords: DRNTU::Science::Geology::Volcanoes and earthquakes
Issue Date: 2007
Source: McCloskey, J., Antonioli, A., Piatanesi, A., Sieh, K., Steacy, S., Nalbant, S. S., et al. (2007). Near-field propagation of tsunamis from megathrust earthquakes. Geophysical Research Letters, 34(14).
Series/Report no.: Geophysical research letters
Abstract: We investigate controls on tsunami generation and propagation in the near-field of great megathrust earthquakes using a series of numerical simulations of subduction and tsunamigenesis on the Sumatran forearc. The Sunda megathrust here is advanced in its seismic cycle and may be ready for another great earthquake. We calculate the seafloor displacements and tsunami wave heights for about 100 complex earthquake ruptures whose synthesis was informed by reference to geodetic and stress accumulation studies. Remarkably, results show that, for any near-field location: (1) the timing of tsunami inundation is independent of slipdistribution on the earthquake or even of its magnitude, and (2) the maximum wave height is directly proportional to the vertical coseismic displacement experienced at that location. Both observations are explained by the dominance of long wavelength crustal flexure in near-field tsunamigenesis. The results show, for the first time, that a single estimate of vertical coseismic displacement might provide a reliable short-term forecast of the maximum height of tsunami waves.
URI: https://hdl.handle.net/10356/95545
http://hdl.handle.net/10220/8658
ISSN: 0094-8276
DOI: 10.1029/2007GL030494
Rights: © 2007 the American Geophysical Union. This paper was published in Geophysical Research Letters and is made available as an electronic reprint (preprint) with permission of the American Geophysical Union. The paper can be found at the following official DOI: http://dx.doi.org/10.1029/2007GL030494. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EOS Journal Articles

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