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Tsunami inundation modeling for western Sumatra

Borrero, José C. and Sieh, Kerry and Chlieh, Mohamed and Synolakis, Costas E. (2006) Tsunami inundation modeling for western Sumatra. Proceedings of the National Academy of Sciences of the United States of America, 103 (52). pp. 19673-19677. ISSN 0027-8424. http://resolver.caltech.edu/CaltechAUTHORS:BORpnas06

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[img] Video (QuickTime) (Movie 2. Simulation of the 1833 tsunami throughout Sumatra.) - Supplemental Material
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[img] Video (QuickTime) (Movie 3. Simulation of the tsunami from scenario 2 (Mw = 8.9) throughout Sumatra.) - Published Version
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[img] Video (QuickTime) (Movie 5. Close-up view of tsunami inundation at Padang from the 1797 earthquake.) - Supplemental Material
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[img] Video (QuickTime) (Movie 6. Close-up view of tsunami inundation at Bengkulu from the 1833 earthquake.) - Supplemental Material
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[img] Video (QuickTime) (Movie 8. Close-up view of tsunami inundation at Bengkulu from scenario 1 (Mw = 9.0).) - Supplemental Material
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[img] Video (QuickTime) (Movie 9. Close-up view of tsunami inundation at Padang from scenario 3 (Mw = 9.3).) - Supplemental Material
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[img] Video (QuickTime) (Movie 10. Close-up view of tsunami inundation at Bengkulu from scenario 3 (Mw = 9.3).) - Supplemental Material
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Abstract

A long section of the Sunda megathrust south of the great tsunamigenic earthquakes of 2004 and 2005 is well advanced in its seismic cycle and a plausible candidate for rupture in the next few decades. Our computations of tsunami propagation and inundation yield model flow depths and inundations consistent with sparse historical accounts for the last great earthquakes there, in 1797 and 1833. Numerical model results from plausible future ruptures produce flow depths of several meters and inundation up to several kilometers inland near the most populous coastal cities. Our models of historical and future tsunamis confirm a substantial exposure of coastal Sumatran communities to tsunami surges. Potential losses could be as great as those that occurred in Aceh in 2004.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1073/pnas.0604069103DOIUNSPECIFIED
http://www.pnas.org/content/103/52/19673.abstractPublisherUNSPECIFIED
Additional Information:© 2006 by The National Academy of Sciences of the USA. Edited by Barbara A. Romanowicz, University of California, Berkeley, CA, and approved October 24, 2006 (received for review May 17, 2006). Published online before print December 14, 2006, doi: 10.1073/pnas.0604069103. This article is a PNAS direct submission. Aubrey Dugger and GreenInfo Networks (San Francisco, CA) provided invaluable geographic information system service and expertise in creating the computational grids. The National Oceanic and Atmospheric Administration's Pacific Marine Environmental Laboratory supported the costs of digitizing the bathymetric charts, through a contract with the United States Agency for International Development. K.S. and M.C. were supported by the Gordon and Betty Moore Foundation through the California Institute of Technology's Tectonics Observatory. National Science Foundation grants to the University of Southern California Tsunami Research Center partially supported the numerical modeling effort. This is Tectonics Observatory contribution number 37. Author contributions: J.C.B., K.S., M.C., and C.E.S. designed research; J.C.B., K.S., and M.C. performed research; J.C.B., K.S., and M.C. analyzed data; and J.C.B., K.S., and C.E.S. wrote the paper. The authors declare no conflict of interest. This article contains supporting information online at www.pnas.org/cgi/content/full/0604069103/DC1. Nautical charts of 1:250,000 scale from the Indonesian hydrographic service were scanned and geo-referenced to latitude/longitude coordinates by using the appropriate datum (UTM48-S, Batavia) and spheroid (Bessel 1841), as specified on the charts. All contours, soundings, and land elevations on the charts were then digitized by hand. These data were then combined with the SRTM30_PLUS data set (http://topex.ucsd.edu) to generate a combined map containing near and offshore bathymetry and coastal topography. The combined data set was then interpolated to a 200-m grid in latitude/longitude coordinates in the WGS84 projection.
Group:Caltech Tectonics Observatory, Caltech Tectonics Observatory. Sumatran Plate Boundary
Funders:
Funding AgencyGrant Number
NOAA, Pacific Marine Environmental LaboratoryUNSPECIFIED
U.S. Agency for International DevelopmentUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
National Science FoundationUNSPECIFIED
Subject Keywords:coastal engineering; earthquake; geophysics; natural disasters
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Tectonics Observatory37
Record Number:CaltechAUTHORS:BORpnas06
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BORpnas06
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11236
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:26 Jul 2008 05:15
Last Modified:26 Dec 2012 10:11

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