| Title: |
Landslide-induced tsunami simulation based on progressive landslide-shallow water equation coupling model: 1946 Aleutian tsunami case. |
| Authors: |
Zhang, Wengang1,2,3 (AUTHOR), Lu, Wang1 (AUTHOR), Wang, Luqi1,2,3 (AUTHOR) wlq93@cqu.edu.cn, Ma, Yanbin1,2 (AUTHOR), Tan, Qinwen4 (AUTHOR), Meng, Xuanyu1 (AUTHOR), Liu, Songlin1 (AUTHOR) |
| Source: |
Landslides. Jul2024, Vol. 21 Issue 7, p1719-1733. 15p. |
| Subject Terms: |
*LANDSLIDES, *TSUNAMIS, *TSUNAMI warning systems, *SHALLOW-water equations, *CONSORTIA |
| Abstract: |
Impulse waves result from submarine or subaerial landslides colliding with water. To model this multiphase disaster, it is imperative to gain a comprehensive understanding of the complex processes and interactions involved. Achieving accurate simulations over a wide area is computationally demanding and presents a significant challenge. In this paper, we analyze the 1946 Aleutian tsunami to assess the effectiveness of various models: SNAKE (rigid landslide model), Ls-Rapid (progressive landslide model advocated by the International Consortium on Landslides), and the Cornell Multi-grid Coupled Tsunami model. We integrate these models using Fortran, presenting two approaches: RL-SWE (rigid landslide-shallow water equations) and PL-SWE (progressive landslide-shallow water equations). The RL-SWE model assumes a rigid semi-ellipsoid sliding mass, while the PL-SWE model considers progressive failure. We conducted computational simulations and validated the results using observed data. Significantly, the PL-SWE model outperformed LS-Tsunami (linked to Ls-Rapid) in simulating submarine landslide-generated waves. This demonstrates the practicality of using the PL-SWE model for large-scale landslide-generated impulse wave simulations. [ABSTRACT FROM AUTHOR] |
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