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| Titel |
Simulation of landslide-generated tsunamis with the HySEA platform: Application to the the Lituya Bay 1958 tsunami |
| VerfasserIn |
J. M. González-Vida, M. J. Castro, C. Sánchez-Linares, M. de la Asunción |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250068036
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| Zusammenfassung |
| We present a PVM-IFCP finite volume scheme for two-layer Savage-Hutter type model to study submarine avalanches (and generated tsunamis) where a layer composed of fluidized granular material is assumed to flow within an upper layer of an inviscid fluid (e. g. water).
A coupled hyperbolic PDE system is considered where the fluid layer is modelled by Shallow-Water equations and the sediment layer is modelled by a Savage-Hutter type model where buoyancy effects has been considered. The system is discretized using a PVM (Polynomial Viscosity Matrix) finite volume scheme. In particular we use a first order PVM scheme called IFCP (Intermediate Field Capturing Parabola) by using a suitable decomposition of a Roe matrix by means of a parabolic viscosity matrix that captures information of the intermediate fields. This scheme has been implemented on GPUs for structured and non-structured grids obtaining large speed-ups in comparison with CPUs implementations.
We will show how the HySEA web platform is used as interface for real applications of this model. A realistic experiment based on the 1958 Lituya Bay mega-tsunami will be shown and the results compared with real data. |
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