A physically-modified spectral model for prediction of sand wave migration

doi:10.1016/j.csr.2021.104573

IMECH-IR > 流固耦合系统力学重点实验室

	A physically-modified spectral model for prediction of sand wave migration
	Cao GH(曹高辉)1 ; Jiang WB(江文滨)1,2 ; Lin M(林缅)1,2
通讯作者	Jiang, Wenbin(jiangwenbin@imech.ac.cn) ; Lin, Mian(linmian@imech.ac.cn)
发表期刊	CONTINENTAL SHELF RESEARCH
	2021-11-15
卷号	230 页码:13
ISSN	0278-4343
摘要	Sand waves are rhythmic bedforms existing in shallow seas and typically induced by the interaction of currents and topography. In this study, a physically-modified spectral model for simulating small-scale sand wave migration is proposed by integrating non-linear spectral analysis, typhoon wind field and sediment transport theory. We introduce a power-average velocity to modify the spectral analysis, which gives explicit physical meanings to the morphological method and improves its stability and reliability. Then, the effects of typical and extreme weather are decoupled and the short-term migration caused by typhoons is removed from the total migration. Results show that a single typhoon will cause large sand wave migration, but the migration caused by multiple typhoons in a long period of time will cancel each other out in the measured data. Moreover, the bilateral reverse migration trend of one-group sand waves in a small scale (~3 km) is captured, which is consistent with field data and previous researches. Compared with existing researches, the proposed model is able to identify the influences of extreme conditions on sand wave migration and provide a feasible and high efficiency way to predict sand wave migration when the available hydrodynamic data is limited.
关键词	Sand wave Spectral model Typhoon Shallow shelf sea
DOI	10.1016/j.csr.2021.104573
收录类别	SCI
语种	英语
WOS记录号	WOS:000709789700001
关键词[WOS]	GULF
WOS研究方向	Oceanography
WOS类目	Oceanography
论文分区	二类
力学所作者排名	1
RpAuthor	Jiang, Wenbin ; Lin, Mian
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/87763
专题	流固耦合系统力学重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cao GH,Jiang WB,Lin M. A physically-modified spectral model for prediction of sand wave migration[J]. CONTINENTAL SHELF RESEARCH,2021,230:13.
APA	曹高辉,江文滨,&林缅.(2021).A physically-modified spectral model for prediction of sand wave migration.CONTINENTAL SHELF RESEARCH,230,13.
MLA	曹高辉,et al."A physically-modified spectral model for prediction of sand wave migration".CONTINENTAL SHELF RESEARCH 230(2021):13.

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