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| Titel |
A nested-grid Boussinesq-type approach to modelling dispersive propagation and runup of landslide-generated tsunamis |
| VerfasserIn |
H. Zhou, C. W. Moore, Y. Wei, V. V. Titov |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 11, no. 10 ; Nr. 11, no. 10 (2011-10-10), S.2677-2697 |
| Datensatznummer |
250009723
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| Publikation (Nr.) |
 copernicus.org/nhess-11-2677-2011.pdf |
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| Zusammenfassung |
| A tsunami generated by large-volume landslide can propagate across the ocean
and flood communities around the basin. The evolution of landslide-generated
tsunamis is affected by the effects of frequency dispersion and involves
processes of different temporal and spacial scales. In this paper, we develop
a numerical approach employing the weakly nonlinear and fully nonlinear
Boussinesq-type theories and nested computational grids. The propagation in a
large domain is simulated with the weakly nonlinear model in a geographical
reference frame. The nearshore wave evolution and runup are computed with the
fully nonlinear model. Nested grids are employed to zoom simulations from
larger to smaller domains at successively increasing resolutions. The models
and the nesting scheme are validated for theoretical analysis, laboratory
experiments and a historical tsunami event. By applying this approach, we
also investigate the potential tsunami impact on the US east coast due to
the possible landslide on La Palma Island. The scenario employed in this study
represents an event of extremely low probability. |
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