气候变化领域集成服务门户(CCPortal): Tsunamis Generated by Submerged Landslides: Numerical Analysis of the Near-Field Wave Characteristics

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DOI	10.1029/2020JC016157
	Tsunamis Generated by Submerged Landslides: Numerical Analysis of the Near-Field Wave Characteristics
	Romano A.; Lara J.L.; Barajas G.; Di Paolo B.; Bellotti G.; Di Risio M.; Losada I.J.; De Girolamo P.
发表日期	2020
ISSN	21699275
卷号	125 期号:7
英文摘要	The accurate modeling of the landslide-generated tsunami characteristics in the so-called near-field is crucial for many practical applications. In this paper, we present a new full-3-D numerical method for modeling tsunamis generated by rigid and impermeable landslides in OpenFOAM® based on the overset mesh technique. The approach has been successfully validated through the numerical reproduction of past experiments for landslide-generated tsunamis triggered by a rigid and impermeable wedge at a sloping coast. The method has been applied to perform a detailed numerical study of the near-field wave features induced by submerged landslides. A parametric analysis has been carried out to explore the importance of the landslide's initial acceleration, directly related to the landslide-triggering mechanisms, on the tsunami generation process and on the related wave properties. Near-field analysis of the numerical results confirms that the influence of the initial acceleration on the tsunami wave properties is significant, affecting wave height, wave period, and wave celerity. Furthermore, it is found that the tsunami generation mechanism experiences a saturation effect for increasing landslide's initial acceleration, confirming and extending previous studies. Moreover, the resulting extended database, composed of previous experimental data and new numerical ones, spanning a wider range of governing parameters, has been represented in the form of a “nondimensional wavemaker curve,” and a new relationship for predicting the wave properties in the near-field as a function of the Hammack number is proposed. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Numerical modeling; Physical modeling; Tsunamis; Water waves
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186777
作者单位	DICEA, Sapienza University of Rome, Rome, Italy; IHCantabria - Instituto de Hidráulica Ambiental, Universidad de Cantabria, Santander, Spain; Engineering Department, Roma Tre University, Rome, Italy; Department of Civil, Construction-Architectural and Environmental Engineering (DICEAA), Environmental and Maritime Hydraulic Laboratory (LIam), L'Aquila University, L'Aquila, Italy
推荐引用方式 GB/T 7714	Romano A.,Lara J.L.,Barajas G.,et al. Tsunamis Generated by Submerged Landslides: Numerical Analysis of the Near-Field Wave Characteristics[J],2020,125(7).
APA	Romano A..,Lara J.L..,Barajas G..,Di Paolo B..,Bellotti G..,...&De Girolamo P..(2020).Tsunamis Generated by Submerged Landslides: Numerical Analysis of the Near-Field Wave Characteristics.Journal of Geophysical Research: Oceans,125(7).
MLA	Romano A.,et al."Tsunamis Generated by Submerged Landslides: Numerical Analysis of the Near-Field Wave Characteristics".Journal of Geophysical Research: Oceans 125.7(2020).