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学科主题: Limnology; Oceanography
题名: Numerical simulations of the coastal effects of tsunami waves caused by the 1993 Hokkaido-Nansei-Oki earthquake
作者: Pan, WL ; Wang, SA ; Cai, SQ
通讯作者: venleonpan@scsio.ac.cn
关键词: tsunami ; coastal effects ; runup ; inundation ; numerical modeling
刊名: CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
发表日期: 2010
卷: 28, 期:5, 页:1029-1039
收录类别: sci
部门归属: [Pan Wenliang; Wang Sheng'an; Cai Shuqun] Chinese Acad Sci, Lab Trop Environm Dynam LED, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Pan Wenliang; Wang Sheng'an] Chinese Acad Sci, MORL, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Pan Wenliang] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
项目归属: LED
摘要: Generally, tsunami waves become hazardous only when approaching the coast. Studying the runup and inundation of tsunami waves is important for understanding the tsunami evolution and for tsunami hazard assessment. Here, we simulated the 1993 Hokkaido-Nansei-Oki (HNO) tsunami using a finite-difference model based on nonlinear shallow-water equations. We focused on the runup and inundation of tsunami wave propagation onto coastal area of Okushiri Island near Hokkaido, Japan, and investigate the relationship of different runup heights with the morphology and bathymetry of the seashore. In the simulation, a nested 4-layer grid system and moving boundary technique are adopted to study runup and inundation. The calculated tsunami heights and inundations in the region agreed well with field measurements. The local bathymetric and topographic characteristics had a first-order effect on the runup. Numerical experiments show that the focusing of certain local bathymetric features would amplify both wave height and current velocity remarkably. The results show that computation on dense grids is necessary to reproduce the observed runup heights, and inundation velocity is an important factor preventing tsunami devastation. In addition, we discussed the potential capability of sediment transport to illustrate the impact of tsunami waves on coastal geomorphology.
原文出处: 查看原文
WOS记录号: WOS:000281711600011
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/6239
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Recommended Citation:
Pan, WL; Wang, SA; Cai, SQ.Numerical simulations of the coastal effects of tsunami waves caused by the 1993 Hokkaido-Nansei-Oki earthquake,CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2010,28(5):1029-1039
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