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A comparative study of earthquake source models in high-order accurate tsunami simulations

Hajihassanpour, M ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ocemod.2019.101429
  3. Publisher: Elsevier Ltd , 2019
  4. Abstract:
  5. The discontinuous Galerkin method is used to solve the non-linear spherical shallow water equations with Coriolis force. The numerical method is well-balanced and takes wetting/drying into account. The two fold goal of this work is a comparative study of dynamic and static tsunami generation by seabed displacement and the careful validation of these source models. The numerical results show that the impact of the choice of seabed displacement model can be significant and that using a static approach may result in inaccurate results. For the validation of the studies, we consider measurements from satellites and buoy networks for the 2011 Tohoku event and the 2004 Sumatra–Andaman tsunami. The results confirm that the method is appropriate for large-scale tsunami simulations and early warning systems. © 2019 Elsevier Ltd
  6. Keywords:
  7. Discontinuous Galerkin method ; Shallow water equations ; Tsunami modeling ; Well-balanced scheme ; Wetting and drying ; Equations of motion ; Numerical methods ; Tsunamis ; Wetting ; Discontinuous Galerkin methods ; Static and dynamic seabed displacement ; Tsunami models ; Well- balanced schemes ; WETTING AND DRYING ; Galerkin methods ; Comparative study ; Computer simulation ; displacement ; Galerkin method ; Seafloor ; Seismic source ; Shallow-water equation ; Sumatra earthquake 2004 ; Tohoku earthquake 2011 ; Tsunami ; Wetting-drying cycle ; Andamans ; Andamans and Nicobars ; Greater Sunda Islands ; Honshu ; Japan ; Sumatra ; Sunda Isles ; Tohoku
  8. Source: Ocean Modelling ; Volume 141 , 2019 ; 14635003 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S1463500318302658