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| Titel |
Advanced Simulation of Coupled Earthquake and Tsunami Events (ASCETE) - Latest Simulation Techniques for Tsunami Process Studies |
| VerfasserIn |
Joern Behrens, Michael Bader, Alexander N. Breuer, Luis A. Dalguer, Alice-A. Gabriel, Percy E. Galvez Barron, Christian Pelties, Kaveh Rahnema, Stefan Vater |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250089620
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| Publikation (Nr.) |
 EGU/EGU2014-3826.pdf |
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| Zusammenfassung |
| The ASCETE project develops a simulation framework for coupled physics-based rupture generation with tsunami propagation and inundation. Recently, several new results could be achieved.
Adaptive mesh tsunami propagation and inundation by discontinuous Galerkin Runge-Kutta methods allows for accurate and conservative inundation schemes. The adaptive mesh refinement allows for efficiency optimization, since computations are only performed in areas of interest and wave activity. A tree-based refinement strategy is utilized to highly optimize the code for high-performance computing architectures.
Rupture simulation is performed by an unstructured tetrahedral discontinuous Galerking ADER discretization, which allows for accurate representation of complex geometries. Advanced meshing methods allow for near-realistic geometrical set-ups. Currently physically consistent state of stress and frictional strength properties inspired from seismo-thermo-mechanical models are implemented, opening the path to cutting edge process studies of earthquakes in megathrust and off-megathrust faulting systems. Code optimizations with automatic code generation tools for vector performance show gains in execution time of a factor of five and more.
First results of coupled simulations with complex time-dependent rupture mechanics and correspondingly triggered tsunami events demonstrate the potential for novel process studies and uncertainty assessment of realistic events. |
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