Show simple item record

dc.contributor.authorLøvholt, Finn
dc.contributor.authorPedersen, Geir Kleivstul
dc.contributor.authorBazin, Sara
dc.contributor.authorKühn, Daniela
dc.contributor.authorBredesen, Rolv Erlend
dc.contributor.authorHarbitz, Carl Bonnevie
dc.date.accessioned2018-05-28T08:29:11Z
dc.date.available2018-05-28T08:29:11Z
dc.date.created2012-02-23T15:51:19Z
dc.date.issued2012
dc.identifier.citationJournal of Geophysical Research - Oceans. 2012, 117 .
dc.identifier.issn2169-9275
dc.identifier.urihttp://hdl.handle.net/11250/2499379
dc.description.abstractMost tsunami models apply dislocation models that assume uniform slip over the entire fault plane, followed by standard analytical models based on Volterra's theory of elastic dislocations for the seabed deformation. In contrast, we quantify tsunami runup variability for an earthquake with fixed magnitude but with heterogeneous rupture distribution assuming plane wave propagation (i.e., an infinitely long rupture). A simple stochastic analysis of 500 slip realizations illustrates the expected variability in coseismic slip along a fault plane and the subsequent runup that occurs along a coastline in the near field. Because of the need for systematically analyzing different fault geometries, grid resolutions, and hydrodynamic models, several hundred thousand model runs are required. Thus, simple but efficient linear models for the tsunami generation, propagation, and runup estimation are used. The mean value and variability of the maximum runup is identified for a given coastal slope configuration and is analyzed for different dip angles. On the basis of the ensemble runs, nonhydrostatic effects are discussed with respect to their impact on generation, nearshore propagation, and runup. We conclude that for the geometry and magnitude investigated, nonhydrostatic effects reduce the variability of the runup; that is, hydrostatic models will produce an artificially high variability.
dc.description.abstractStochastic analysis of tsunami runup due to heterogeneous coseismic slip and dispersion
dc.language.isoeng
dc.subjectFlodbølger
dc.subjectFlood waves
dc.subjectTsunami
dc.titleStochastic analysis of tsunami runup due to heterogeneous coseismic slip and dispersion
dc.title.alternativeStochastic analysis of tsunami runup due to heterogeneous coseismic slip and dispersion
dc.typePeer reviewed
dc.typeJournal article
dc.description.versionpublishedVersion
dc.source.pagenumber17
dc.source.volume117
dc.source.journalJournal of Geophysical Research - Oceans
dc.identifier.doi10.1029/2011JC007616
dc.identifier.cristin911506
cristin.unitcode7452,4,2,0
cristin.unitcode7452,3,2,0
cristin.unitcode7452,3,3,0
cristin.unitnameComputational Geomechanics (CGM)
cristin.unitnameGeokartlegging
cristin.unitnameRisiko, Skredgeoteknikk og Klimatilpasning
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record