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

doi:10.1016/j.csr.2021.104573

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	A physically-modified spectral model for prediction of sand wave migration
	Cao GH(曹高辉)2; Jiang WB(江文滨)1,2; Lin M(林缅)1,2
刊名	CONTINENTAL SHELF RESEARCH
	2021-11-15
卷号	230 页码:13
关键词	Sand wave Spectral model Typhoon Shallow shelf sea
ISSN号	0278-4343
DOI	10.1016/j.csr.2021.104573
通讯作者	Jiang, Wenbin(jiangwenbin@imech.ac.cn) ; Lin, Mian(linmian@imech.ac.cn)
英文摘要	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.
分类号	二类
WOS关键词	GULF
WOS研究方向	Oceanography
语种	英语
WOS记录号	WOS:000709789700001
其他责任者	Jiang, Wenbin ; Lin, Mian
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87762]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, 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.