期刊
APPLIED OCEAN RESEARCH
卷 32, 期 3, 页码 343-350出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apor.2009.12.002
关键词
Tsunamis; Submerged landslide; Mild-slope equation; Wave frequency dispersion; Internal wave generation; Elliptic model
资金
- Italian Ministry of Research (MIUR)
We present a depth integrated numerical model for the simulation of the generation and the propagation of tsunamis generated by submerged landslides. The model is able to reproduce at low computational costs the full frequency dispersion of the waves and uses an ad hoc treatment for the incorporation of the effects of the moving seafloor to reproduce the generation of the waves. We also compare the present approach with some simplified techniques used in the past for the generation of these waves in depth integrated models, and we highlight the different behavior of frequency-dispersive and non-dispersive model equations. Reference solutions for comparison and discussion are obtained from the application of a three dimensional solver of the Laplace equation. All the numerical models used in this research are based on linearized model equations and boundary conditions and are therefore expected to provide reliable results for problems involving small amplitude waves and small thickness landslides. The model seems to be useful for rapid and accurate estimation of the properties of landslide generated waves, and can be used to support a tsunami early warning system. (C) 2009 Elsevier Ltd. All rights reserved.
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