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.
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Acknowledgements
The authors are grateful to the financial support from cooperation projects between Chongqing University, Chinese Academy of Sciences and other institutes (HZ2021001), the Science and Technology Research Program of Chongqing Municipal Education Commission (KJCXZD2020002), High-end Foreign Expert Introduction program (G20200022005), and Graduate Research and Innovation Foundation of Chongqing, China (CYS22054).
Funding
The financial support from cooperation projects between Chongqing university, Chinese Academy of Sciences and other institutes, HZ2021001, Wengang Zhang, Science and Technology Research Program of Chongqing Municipal Education Commission, KJCXZD2020002, Wengang Zhang, High-end Foreign Expert Introduction program, G20200022005, Wengang Zhang, Graduate Research and Innovation Foundation of Chongqing, China, CYS22054, Wengang Zhang.
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Zhang, W., Lu, W., Wang, L. et al. Landslide-induced tsunami simulation based on progressive landslide-shallow water equation coupling model: 1946 Aleutian tsunami case. Landslides (2024). https://doi.org/10.1007/s10346-024-02241-9
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DOI: https://doi.org/10.1007/s10346-024-02241-9