Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item:

Authors: McCloskey, J.*
Antonioli, A.*
Piatanesi, A.*
Sieh, K.*
Steacy, S.*
Nalbant, S.*
Cocco, M.*
Giunchi, C.*
Huang, J. D.*
Dunlop, P.*
Title: Near-field propagation of tsunamis from megathrust earthquakes
Title of journal: Geophysical Research Letters
Series/Report no.: /34(2007)
Publisher: AGU
Issue Date: 27-Jul-2007
DOI: 10.1029/2007GL030494
Keywords: Sumatra
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.
Appears in Collections:04.06.03. Earthquake source and dynamics
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
2007GL030494.pdfmain article408.24 kBAdobe PDFView/Open
article_text_and_figure.pdfunformatted final version868.92 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Share this record




Stumble it!



Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA