气候变化领域集成服务门户(CCPortal): Unsteady Ekman-Stokes Dynamics: Implications for Surface Wave-Induced Drift of Floating Marine Litter

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DOI	10.1029/2020GL089189
	Unsteady Ekman-Stokes Dynamics: Implications for Surface Wave-Induced Drift of Floating Marine Litter
	Higgins C.; Vanneste J.; van den Bremer T.S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:18
英文摘要	We examine Stokes drift and wave-induced transport of floating marine litter on the surface of a rotating ocean with a turbulent mixed layer. Due to Coriolis-Stokes forcing and surface wave stress, a second-order Eulerian-mean flow forms, which must be added to the Stokes drift to obtain the correct wave-induced Lagrangian velocity. We show that this wave-driven Eulerian-mean flow can be expressed as a convolution between the unsteady Stokes drift and an “Ekman-Stokes kernel.” Using this convolution, we calculate the unsteady wave-driven contribution to particle transport. We report significant differences in both direction and magnitude of transport when the Eulerian-mean Ekman-Stokes velocity is included. ©2020. The Authors.
英文关键词	Convolution; Lagrangian velocity; Marine litter; Mean flow; Mixed layer; Particle transport; Second orders; Unsteady stokes; Unsteady waves; Surface waves; Ekman transport; Eulerian analysis; litter; marine environment; mixed layer; Stokes formula; surface wave; unsteady flow
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169734
作者单位	Department of Engineering Science, University of Oxford, Oxford, United Kingdom; School of Mathematics and Maxwell Institute for Mathematical Sciences, University of Edinburgh, Edinburgh, United Kingdom
推荐引用方式 GB/T 7714	Higgins C.,Vanneste J.,van den Bremer T.S.. Unsteady Ekman-Stokes Dynamics: Implications for Surface Wave-Induced Drift of Floating Marine Litter[J],2020,47(18).
APA	Higgins C.,Vanneste J.,&van den Bremer T.S..(2020).Unsteady Ekman-Stokes Dynamics: Implications for Surface Wave-Induced Drift of Floating Marine Litter.Geophysical Research Letters,47(18).
MLA	Higgins C.,et al."Unsteady Ekman-Stokes Dynamics: Implications for Surface Wave-Induced Drift of Floating Marine Litter".Geophysical Research Letters 47.18(2020).