Critical Depths Derived for Three Distinct Modes of Coastal Sediment Transport

doi:10.2112/SI85-055.1

	Critical Depths Derived for Three Distinct Modes of Coastal Sediment Transport
	Shi, HongYuan 1; You, Zai-Jin 1,3; Yin, BaoShu 4; Bai, YuChuan 2
刊名	JOURNAL OF COASTAL RESEARCH
	2018-05-01
页码	271-275
关键词	Critical depth depth of closure suspended load beach nourishment
ISSN号	0749-0208
DOI	10.2112/SI85-055.1
英文摘要	A unified criterion is developed for three distinct modes of coastal sediment transport: incipient movement of sediment (only bedload), initiation of bedripple formation (bedloadand suspended load), and inception of bed ripple disappearance or sheet flow (mainly bed load) based on three unique laboratory datasets collected on a horizontal bed of sediment under regular waves. The onset velocity criterion on the three distinct sediment transport modesis derived to be of the same simple form, U-0 = 2 pi C(1 - T-0/T), where U-0 is the maximumonset wave orbital velocity close to the bed, T is the wave period, and C and T-0 are the coefficients dependent of sediment property only. The newly developed criterion is then extended to calculatecritical depths for the distinct modesof sediment transport under coastal waves by replacing regular wave height Hand periodT with statistical wave height H-rms and period T-rms according to the recently developed "zero-crossing and energy balance"wave analysis method and linear wave theory. The critical depth calculated from this unified criterion is shown to be a function of sediment grain size and density,and wave height andperiod, but more sensitiveto wave period. The critical depth estimated forthe initiation of bed sediment ripple formation is found to be much larger than the depth of closure derived for beach-fill designs.
资助项目	Shandong Provincial Natural Science[ZR2017BD023] ; Open Research Fund of the Key Laboratory of Ocean Circulation and Waves, Chinese Academy of Sciences[KLOCW1705] ; Shandong Provincial Natural Science Key Basic Research Program[ZR2017ZA0202] ; Open Research Fund of the State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University[HESS1706]
WOS关键词	SHEET FLOW ; INITIATION ; MOTION ; WAVES
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography ; Geology
语种	英语
出版者	COASTAL EDUCATION & RESEARCH FOUNDATION
WOS记录号	WOS:000441173100055
资助机构	Shandong Provincial Natural Science ; Open Research Fund of the Key Laboratory of Ocean Circulation and Waves, Chinese Academy of Sciences ; Shandong Provincial Natural Science Key Basic Research Program ; Open Research Fund of the State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/12358]
专题	中国科学院青岛生物能源与过程研究所
通讯作者	You, Zai-Jin
作者单位	1.Ludong Univ, Yantai, Shandong, Peoples R China 2.Tianjin Univ, Tianjin, Peoples R China 3.Univ Queensland, St Lucia, Qld, Australia 4.Chinese Acad Sci, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Shi, HongYuan,You, Zai-Jin,Yin, BaoShu,et al. Critical Depths Derived for Three Distinct Modes of Coastal Sediment Transport[J]. JOURNAL OF COASTAL RESEARCH,2018:271-275.
APA	Shi, HongYuan,You, Zai-Jin,Yin, BaoShu,&Bai, YuChuan.(2018).Critical Depths Derived for Three Distinct Modes of Coastal Sediment Transport.JOURNAL OF COASTAL RESEARCH,271-275.
MLA	Shi, HongYuan,et al."Critical Depths Derived for Three Distinct Modes of Coastal Sediment Transport".JOURNAL OF COASTAL RESEARCH (2018):271-275.