气候变化领域集成服务门户(CCPortal): Solutions for Subtidal Flow in Channels and Estuaries Under Different Integral Constraints

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DOI	10.1029/2020JC016076
	Solutions for Subtidal Flow in Channels and Estuaries Under Different Integral Constraints
	Whitney M.M.; Jia Y.
发表日期	2020
ISSN	21699275
卷号	125 期号:9
英文摘要	This study builds on Huntley and Ryan (2018, https://doi.org/10.1002/2017JC012748) and related prior works on channels and estuaries by considering solutions for the same subtidal dynamics but with alternative integral flow constraints. Prior solutions do not have a truly two-dimensional (2-D) flow field, as axial changes in the axial flow are implied. Three constraint types are considered: the Constant case with spatially constant density gradients constrained with section-integrated flow (as in prior works), Semi-Variable case with a constant axial density gradient and laterally variable lateral density gradient constrained with depth-integrated lateral flow, and Variable case with spatially variable density gradients in both directions constrained with depth-integrated axial and lateral flows. The Semi-Variable and Variable cases can produce solutions with truly 2-D flow if the depth-integrated lateral flow is set to zero everywhere. Differences among solutions are illustrated with idealized and realistic applications from Huntley and Ryan (2018, https://doi.org/10.1002/2017JC012748). For the idealized application, the Constant case and the Semi-Variable case with 2-D flow have clear differences in axial velocity and stark contrasts in lateral flow (and density gradients). For the Nares Strait application, the Variable case with observed depth-averaged axial and lateral velocities is best able to represent the fastest observed down-channel velocities, the weak reversed flow on one side of the channel, and the observed lateral flow structure. Overall, selecting different integral constraints on flow conspicuously changes the subtidal flow, opens up new possibilities for truly 2-D flow solutions, and provides additional flexibility for representing observed conditions in realistic situations. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	channel; density-driven; estuary; exchange; subtidal; wind-driven
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/186693
作者单位	Department of Marine Sciences, University of Connecticut, Groton, CT, United States
推荐引用方式 GB/T 7714	Whitney M.M.,Jia Y.. Solutions for Subtidal Flow in Channels and Estuaries Under Different Integral Constraints[J],2020,125(9).
APA	Whitney M.M.,&Jia Y..(2020).Solutions for Subtidal Flow in Channels and Estuaries Under Different Integral Constraints.Journal of Geophysical Research: Oceans,125(9).
MLA	Whitney M.M.,et al."Solutions for Subtidal Flow in Channels and Estuaries Under Different Integral Constraints".Journal of Geophysical Research: Oceans 125.9(2020).