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dc.contributor.authorWang, Tao  Concept link
dc.contributor.authorGeyer, W. Rockwell  Concept link
dc.contributor.authorEngel, Patricia A.  Concept link
dc.contributor.authorJiang, Wensheng  Concept link
dc.contributor.authorFeng, Shizuo  Concept link
dc.date.accessioned2015-12-11T20:01:11Z
dc.date.available2016-05-01T07:55:56Z
dc.date.issued2015-11
dc.identifier.citationJournal of Physical Oceanography 45 (2015): 2773–2789en_US
dc.identifier.urihttps://hdl.handle.net/1912/7685
dc.descriptionAuthor Posting. © American Meteorological Society, 2015. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 45 (2015): 2773–2789, doi:10.1175/JPO-D-15-0031.1.en_US
dc.description.abstractTidal oscillatory salt transport, induced by the correlation between tidal variations in salinity and velocity, is an important term for the subtidal salt balance under the commonly used Eulerian method of salt transport decomposition. In this paper, its mechanisms in a partially stratified estuary are investigated with a numerical model of the Hudson estuary. During neap tides, when the estuary is strongly stratified, the tidal oscillatory salt transport is mainly due to the hydraulic response of the halocline to the longitudinal variation of topography. This mechanism does not involve vertical mixing, so it should not be regarded as oscillatory shear dispersion, but instead it should be regarded as advective transport of salt, which results from the vertical distortion of exchange flow obtained in the Eulerian decomposition by vertical fluctuations of the halocline. During spring tides, the estuary is weakly stratified, and vertical mixing plays a significant role in the tidal variation of salinity. In the spring tide regime, the tidal oscillatory salt transport is mainly due to oscillatory shear dispersion. In addition, the transient lateral circulation near large channel curvature causes the transverse tilt of the halocline. This mechanism has little effect on the cross-sectionally integrated tidal oscillatory salt transport, but it results in an apparent left–right cross-channel asymmetry of tidal oscillatory salt transport. With the isohaline framework, tidal oscillatory salt transport can be regarded as a part of the net estuarine salt transport, and the Lagrangian advective mechanism and dispersive mechanism can be distinguished.en_US
dc.description.sponsorshipTao Wang was supported by the Open Research Fund of State Key Laboratory of Estuarine and Coastal Research (Grant SKLEC-KF201509) and Chinese Scholarship Council. Geyer was supported by by NSF Grant OCE 0926427. Wensheng Jiang was supported by NSFC-Shandong Joint Fund for Marine Science Research Centers (Grant U1406401).en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Meteorological Societyen_US
dc.relation.urihttps://doi.org/10.1175/JPO-D-15-0031.1
dc.subjectGeographic location/entityen_US
dc.subjectEstuariesen_US
dc.subjectCirculation/ Dynamicsen_US
dc.subjectBaroclinic flowsen_US
dc.subjectDispersionen_US
dc.subjectShear structure/flowsen_US
dc.subjectAtm/Ocean Structure/ Phenomenaen_US
dc.subjectDiapycnal mixingen_US
dc.subjectModels and modelingen_US
dc.subjectRegional modelsen_US
dc.titleMechanisms of tidal oscillatory salt transport in a partially stratified estuaryen_US
dc.typeArticleen_US
dc.description.embargo2016-05-01en_US
dc.identifier.doi10.1175/JPO-D-15-0031.1


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