气候变化领域集成服务门户(CCPortal): Stalling and Dissipation of a Near-Inertial Wave (NIW) in an Anticyclonic Ocean Eddy: Direct Determination of Group Velocity and Comparison With Theory

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DOI	10.1029/2020JC016742
	Stalling and Dissipation of a Near-Inertial Wave (NIW) in an Anticyclonic Ocean Eddy: Direct Determination of Group Velocity and Comparison With Theory
	Sanford T.B.; Ma B.B.; Alford M.H.
发表日期	2021
ISSN	21699275
卷号	126 期号:5
英文摘要	A near-inertial wave stalling and breaking in a critical layer was observed for a week by a pair of autonomous velocity and density profilers on concentric paths in an ocean mesoscale eddy. Profiler observations provide estimates of the eddy's vertical vorticity and shear, quantities needed to test theories of downward near-inertial wave (NIW) energy flux and loss from inertial wave–eddy interactions. The unique observations of the wave's intrinsic frequency (Formula presented.) and vertical wavenumber m provide a novel estimate of the vertical group velocity Cgz from changes in (Formula presented.) with respect to m. Shear, strain, energy flux convergence, and parameterized turbulence are all elevated near 140 m depth, near the bottom of the strongest eddy velocities. Our observations are consistent with a downgoing NIW's group velocity decreasing owing to wave–eddy interactions, providing important clues on global energetics of NIW mixing. © 2021. The Authors.
英文关键词	critical layer; group velocity; intrinsic frequency; mesoscale eddy; near-inertial; NIW
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/186336
作者单位	Applied Physics Laboratory, University of Washington, Seattle, WA, United States; School of Oceanography, University of Washington, Seattle, WA, United States; Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States
推荐引用方式 GB/T 7714	Sanford T.B.,Ma B.B.,Alford M.H.. Stalling and Dissipation of a Near-Inertial Wave (NIW) in an Anticyclonic Ocean Eddy: Direct Determination of Group Velocity and Comparison With Theory[J],2021,126(5).
APA	Sanford T.B.,Ma B.B.,&Alford M.H..(2021).Stalling and Dissipation of a Near-Inertial Wave (NIW) in an Anticyclonic Ocean Eddy: Direct Determination of Group Velocity and Comparison With Theory.Journal of Geophysical Research: Oceans,126(5).
MLA	Sanford T.B.,et al."Stalling and Dissipation of a Near-Inertial Wave (NIW) in an Anticyclonic Ocean Eddy: Direct Determination of Group Velocity and Comparison With Theory".Journal of Geophysical Research: Oceans 126.5(2021).