Practical modified scheme of linear shallow-water equations for distant propagation of tsunamis

被引：43
|
作者：
Cho, Yong-Sik [1 ]
Sohn, Dae-Hee [1 ]
Lee, Seung Oh [1 ]
机构：
[1] Hanyang Univ, Dept Civil Engn, Seoul 133791, South Korea
来源：
OCEAN ENGINEERING | 2007年 / 34卷 / 11-12期
关键词：
tsunami; linear shallow-water equations; linear Bossinesq equations; frequency dispersion effects; leap-frog scheme; Gaussian hump;
D O I：
10.1016/j.oceaneng.2006.08.014
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
A simple but practical numerical model describing a distant propagation of tsunamis is newly proposed by introducing an additional term to the existing modified scheme. The numerical dispersion of the proposed model is manipulated to replace the physical dispersion of the linear Boussinesq equations without any limitation. The new model developed in this study is applied to propagation of a Gaussian hump over a constant water depth and the predicted free surface displacements are compared with available analytical solutions. A very reasonable agreement is observed. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1769 / 1777
页数：9
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