Variability of tsunami inundation footprints considering stochastic scenarios based on a single rupture model: Application to the 2011 Tohoku earthquake

Handle URI:
http://hdl.handle.net/10754/558711
Title:
Variability of tsunami inundation footprints considering stochastic scenarios based on a single rupture model: Application to the 2011 Tohoku earthquake
Authors:
Goda, Katsuichiro; Yasuda, Tomohiro; Mori, Nobuhito; Mai, Paul Martin ( 0000-0002-9744-4964 )
Abstract:
The sensitivity and variability of spatial tsunami inundation footprints in coastal cities and towns due to a megathrust subduction earthquake in the Tohoku region of Japan are investigated by considering different fault geometry and slip distributions. Stochastic tsunami scenarios are generated based on the spectral analysis and synthesis method with regards to an inverted source model. To assess spatial inundation processes accurately, tsunami modeling is conducted using bathymetry and elevation data with 50 m grid resolutions. Using the developed methodology for assessing variability of tsunami hazard estimates, stochastic inundation depth maps can be generated for local coastal communities. These maps are important for improving disaster preparedness by understanding the consequences of different situations/conditions, and by communicating uncertainty associated with hazard predictions. The analysis indicates that the sensitivity of inundation areas to the geometrical parameters (i.e., top-edge depth, strike, and dip) depends on the tsunami source characteristics and the site location, and is therefore complex and highly nonlinear. The variability assessment of inundation footprints indicates significant influence of slip distributions. In particular, topographical features of the region, such as ria coast and near-shore plain, have major influence on the tsunami inundation footprints.
KAUST Department:
Earth Science and Engineering Program
Citation:
Variability of tsunami inundation footprints considering stochastic scenarios based on a single rupture model: Application to the 2011 Tohoku earthquake 2015:n/a Journal of Geophysical Research: Oceans
Publisher:
Wiley-Blackwell
Journal:
Journal of Geophysical Research: Oceans
Issue Date:
30-Jun-2015
DOI:
10.1002/2014JC010626
Type:
Article
ISSN:
21699275
Additional Links:
http://doi.wiley.com/10.1002/2014JC010626
Appears in Collections:
Articles; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorGoda, Katsuichiroen
dc.contributor.authorYasuda, Tomohiroen
dc.contributor.authorMori, Nobuhitoen
dc.contributor.authorMai, Paul Martinen
dc.date.accessioned2015-07-01T06:02:29Zen
dc.date.available2015-07-01T06:02:29Zen
dc.date.issued2015-06-30en
dc.identifier.citationVariability of tsunami inundation footprints considering stochastic scenarios based on a single rupture model: Application to the 2011 Tohoku earthquake 2015:n/a Journal of Geophysical Research: Oceansen
dc.identifier.issn21699275en
dc.identifier.doi10.1002/2014JC010626en
dc.identifier.urihttp://hdl.handle.net/10754/558711en
dc.description.abstractThe sensitivity and variability of spatial tsunami inundation footprints in coastal cities and towns due to a megathrust subduction earthquake in the Tohoku region of Japan are investigated by considering different fault geometry and slip distributions. Stochastic tsunami scenarios are generated based on the spectral analysis and synthesis method with regards to an inverted source model. To assess spatial inundation processes accurately, tsunami modeling is conducted using bathymetry and elevation data with 50 m grid resolutions. Using the developed methodology for assessing variability of tsunami hazard estimates, stochastic inundation depth maps can be generated for local coastal communities. These maps are important for improving disaster preparedness by understanding the consequences of different situations/conditions, and by communicating uncertainty associated with hazard predictions. The analysis indicates that the sensitivity of inundation areas to the geometrical parameters (i.e., top-edge depth, strike, and dip) depends on the tsunami source characteristics and the site location, and is therefore complex and highly nonlinear. The variability assessment of inundation footprints indicates significant influence of slip distributions. In particular, topographical features of the region, such as ria coast and near-shore plain, have major influence on the tsunami inundation footprints.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1002/2014JC010626en
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en
dc.subjecttsunami simulationen
dc.subject2011 Tohoku tsunamien
dc.subjectinundation footprintsen
dc.subjectstochastic earthquake slipen
dc.subjectsensitivity analysisen
dc.subjecttsunami hazard variabilityen
dc.titleVariability of tsunami inundation footprints considering stochastic scenarios based on a single rupture model: Application to the 2011 Tohoku earthquakeen
dc.typeArticleen
dc.contributor.departmentEarth Science and Engineering Programen
dc.identifier.journalJournal of Geophysical Research: Oceansen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionCivil Engineering, University of Bristol; Bristol UKen
dc.contributor.institutionDisaster Prevention Research Institute, Kyoto University; Kyoto Japanen
dc.contributor.institutionDisaster Prevention Research Institute, Kyoto University; Kyoto Japanen
kaust.authorMai, Paul Martinen
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