气候变化领域集成服务门户(CCPortal): Breaking of Internal Kelvin Waves Shoaling on a Slope

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DOI	10.1029/2020JC016120
	Breaking of Internal Kelvin Waves Shoaling on a Slope
	Nakayama K.; Sato T.; Tani K.; Boegman L.; Fujita I.; Shintani T.
发表日期	2020
ISSN	21699275
卷号	125 期号:10
英文摘要	In stratified flow, breaking of internal waves over slopes induces resuspension of bottom sediments and transport of mass. When internal waves shoal and break, flow dynamics and mass transport differ significantly according to whether the Coriolis force is included or neglected. Despite its importance, the currents generated by breaking internal Kelvin waves remain uninvestigated. Therefore, this study considers breaking of internal waves over a uniform slope under Coriolis with equivalent upper- and lower-layer depths. Laboratory experiments, using a 6.0-m rotating tank, were undertaken to visualize currents using particle image velocimetry. Experimental data validated a three-dimensional fluid dynamics model, in which a phase-averaged velocity (residual jet) was simulated to occur at the lateral wall (to the right) of the progressive internal Kelvin waves in the breaking zone, with the generation of an oblique downslope return flow (downdraft) under Coriolis. The geostrophic balance drove the residual jet, and the equation for estimating the residual current, due to the jet, was formulated and was discussed by referring a coastal jet in Lake Erie. The results provide insight on mass transport in lakeshore and coastal zones. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	coastal jet; Coriolis; geostrophic balance; laboratory experiment; oblique downdraft; residual current
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186608
作者单位	Graduate School of Engineering, Kobe University, Kobe, Japan; Energy System and Plant Engineering Company, Kawasaki Heavy Industries, Ltd., Kobe, Japan; Department of Civil Engineering, Queen's University at Kingston, Kingston, ON, Canada; Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, Hachioji, Japan
推荐引用方式 GB/T 7714	Nakayama K.,Sato T.,Tani K.,et al. Breaking of Internal Kelvin Waves Shoaling on a Slope[J],2020,125(10).
APA	Nakayama K.,Sato T.,Tani K.,Boegman L.,Fujita I.,&Shintani T..(2020).Breaking of Internal Kelvin Waves Shoaling on a Slope.Journal of Geophysical Research: Oceans,125(10).
MLA	Nakayama K.,et al."Breaking of Internal Kelvin Waves Shoaling on a Slope".Journal of Geophysical Research: Oceans 125.10(2020).