Near-field propagation of tsunamis from megathrust earthquakes

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Near-field propagation of tsunamis from megathrust earthquakes

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dc.contributor.author McCloskey, John
dc.contributor.author Antonioli, Andrea
dc.contributor.author Piatanesi, Alessio
dc.contributor.author Sieh, Kerry
dc.contributor.author Steacy, Sandy
dc.contributor.author Nalbant, Suleyman S.
dc.contributor.author Cocco, Massimo
dc.contributor.author Giunchi, Carlo
dc.contributor.author Huang, Jian Dong
dc.contributor.author Dunlop, Paul
dc.date.accessioned 2012-09-27T07:12:26Z
dc.date.available 2012-09-27T07:12:26Z
dc.date.copyright 2007
dc.date.issued 2012-09-27
dc.identifier.citation 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).
dc.identifier.issn 0094-8276
dc.identifier.uri http://hdl.handle.net/10220/8658
dc.description.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.
dc.language.iso en
dc.relation.ispartofseries Geophysical research letters
dc.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.
dc.subject DRNTU::Science::Geology::Volcanoes and earthquakes.
dc.title Near-field propagation of tsunamis from megathrust earthquakes
dc.type Journal Article
dc.identifier.doi http://dx.doi.org/10.1029/2007GL030494
dc.description.version Published version

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