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J. Ocean Eng. Technol. 2007;21(5):1-8.    

On Long Wave Induced by a Sub-sea Landslide Using a 2D Numerical Wave Tank
Koo Weon-Cheol,Kim Moo-Hyun
Dept. of Civil Engineering Texas A&M University College Station,Dept. of Civil Engineering Texas A&M University College Station
© 2007 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Landslide, Tsunami, Boundary element, Run-up, Fully nonlinear, Numerical wave tank, Wave characteristics
Abstract
A long wave induced by a Gaussian-shape submarine landslide is simulated by a 2D fully nonlinear numerical wave tank (NWT). The NWT is based on the boundary element method and the mixed Eulerian/Lagrangian approach. Using the NWT, physical characteristics of land-slide tsunami, including wave generation, propagation, particle kinematics, hydrodynamic pressure, run-up and depression, are simulated for the early stage of long wave generation and propagation. Various sliding mass heights are applied to the developed model for a systematic sensitivity analysis. In particular, the fully nonlinear NWT results are compared with linear results (exact body-boundary conditions with linear free-surface conditions) to identify the nonlinear effects in the respective cases.


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