Numerical simulations of the coastal effects of tsunami waves caused by the 1993 Hokkaido-Nansei-Oki earthquake
Pan, WL; Wang, SA; Cai, SQ; venleonpan@scsio.ac.cn
2010
发表期刊CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN0254-4059
卷号28期号:5页码:1029-1039
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.
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
关键词Tsunami Coastal Effects Runup Inundation Numerical Modeling
学科领域Limnology ; Oceanography
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收录类别sci
资助项目LED
WOS记录号WOS:000281711600011
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文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/6239
专题热带海洋环境国家重点实验室(LTO)
通讯作者venleonpan@scsio.ac.cn
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GB/T 7714
Pan, WL,Wang, SA,Cai, SQ,et al. Numerical simulations of the coastal effects of tsunami waves caused by the 1993 Hokkaido-Nansei-Oki earthquake[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2010,28(5):1029-1039.
APA Pan, WL,Wang, SA,Cai, SQ,&venleonpan@scsio.ac.cn.(2010).Numerical simulations of the coastal effects of tsunami waves caused by the 1993 Hokkaido-Nansei-Oki earthquake.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,28(5),1029-1039.
MLA Pan, WL,et al."Numerical simulations of the coastal effects of tsunami waves caused by the 1993 Hokkaido-Nansei-Oki earthquake".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 28.5(2010):1029-1039.
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