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    High-resolution seismic wave propagation using local time stepping

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    Type
    Poster
    Authors
    Peter, Daniel cc
    Rietmann, Max
    Galvez, Percy
    Ampuero, Jean Paul
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Earth Science and Engineering Program
    Extreme Computing Research Center
    Physical Science and Engineering (PSE) Division
    Date
    2017-03-13
    Permanent link to this record
    http://hdl.handle.net/10754/623344
    
    Metadata
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    Abstract
    High-resolution seismic wave simulations often require local refinements in numerical meshes to accurately capture e.g. steep topography or complex fault geometry. Together with explicit time schemes, this dramatically reduces the global time step size for ground-motion simulations due to numerical stability conditions. To alleviate this problem, local time stepping (LTS) algorithms allow an explicit time stepping scheme to adapt the time step to the element size, allowing nearoptimal time steps everywhere in the mesh. This can potentially lead to significantly faster simulation runtimes.
    Conference/Event name
    High Performance Computing Saudi Arabia (HPC Saudi) 2017
    Collections
    Posters; Physical Science and Engineering (PSE) Division; Extreme Computing Research Center; Earth Science and Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division; High Performance Computing Saudi Arabia (HPC Saudi) 2017

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