Validation of tsunami numerical simulation models for an idealized coastal industrial site

Numerous tsunami numerical models have been proposed, but their prediction accuracies have not been directly compared. For quantifying the modeling uncertainties, the authors statistically analyzed the prediction results submitted by participants in the tsunami blind contest held at the 17th World C...

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Bibliographic Details
Published in:Coastal engineering journal 2022-04, Vol.64 (2), p.302-343
Main Authors: Watanabe, Masashi, Arikawa, Taro, Kihara, Naoto, Tsurudome, Chiaki, Hosaka, Koichi, Kimura, Tatsuto, Hashimoto, Takayuki, Ishihara, Fumitaka, Shikata, Takemi, Morikawa, Daniel Shigueo, Makino, Taiga, Asai, Mitsuteru, Chida, Yu, Ohnishi, Yoichi, Marras, Simone, Mukherjee, Abhishek, Cajas, Juan Carlos, Houzeaux, Guillaume, Paolo, B D, Lara, Javier L., Barajas, Gabriel, Losada, Íñigo J., Hasebe, Masanobu, Shigihara, Yoshinori, Asai, Tatsuya, Ikeya, Tsuyoshi, Inoue, Shusaku, Matsutomi, Hideo, Nakano, Yoshiaki, Okuda, Yasuo, Okuno, Shunya, Ooie, Takayuki, Shoji, Gaku, Tateno, Tomokazu
Format: Article
Language:English
Subjects:
Earthquake engineering
Earthquakes
Hydrodynamics
laboratory test
Mathematical models
Model accuracy
Numerical models
numerical simulation
Offshore
Offshore engineering
Pressure distribution
Reproducibility
Seismic activity
Seismic engineering
Shallow water
Shallow water equations
Simulation
Smooth particle hydrodynamics
Solitary waves
Solitons
Three dimensional models
Tsunami
Tsunamis
validation
Vertical distribution
Water levels
Wave forces
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Summary:Numerous tsunami numerical models have been proposed, but their prediction accuracies have not been directly compared. For quantifying the modeling uncertainties, the authors statistically analyzed the prediction results submitted by participants in the tsunami blind contest held at the 17th World Conference on Earthquake Engineering. The reproducibility of offshore water level generated due to the tsunami with soliton fission significantly decreased when the nonlinear shallow water equation models (NSWE) was used compared to three-dimensional (3D) models. The inundation depth was reproduced well in 3D models. However, the reproducibility of wave forces acting on the structure and velocities over land was lower in 3D models than that in NSWE models. For cases where the impulsive tsunami wave pressure generated could not be calculated based on the hydrostatic assumption, the prediction accuracy of the NSWE models was higher than that of the 3D models. The prediction accuracies of both models were not improved at small grid-cell sizes. The NSWE model cannot simulate the short-wave component and vertical pressure distribution. Therefore, further developments in 3D models and smoothed particle hydrodynamics methods (SPH) are needed. The presented results contribute to the future development of tsunami numerical simulation tools.
ISSN:2166-4250
1793-6292
DOI:10.1080/21664250.2022.2072611