dc.date.accessioned | 2023-12-12T17:14:11Z | |
dc.date.available | 2023-12-12T17:14:11Z | |
dc.date.created | 2023-11-29T10:17:25Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | Espenes, Håvard Isachsen, Pål Erik Nøst, Ole Anders . Observations and modeling of tidally generated high-frequency velocity fluctuations downstream of a channel constriction. Ocean Science. 2023, 19(6), 1633-1648 | |
dc.identifier.uri | http://hdl.handle.net/10852/106279 | |
dc.description.abstract | Abstract. We investigate data from an acoustic Doppler current profiler deployed in a constricted ocean channel showing a tidally dominated flow with intermittent velocity extrema during outflow from the constriction but not during inflow. A 2D numerical ocean model forced by tides is used to examine the spatial flow structure and underlying dynamical processes. We find that flow-separation eddies generated near the tightest constriction point form a dipole pair which propagates downstream and drives the observed intermittent flow variability. The eddies, which are generated by an along-channel adverse pressure gradient, spin up for some time near the constriction until they develop local low pressures in their centers that are strong enough to modify the background along-channel pressure gradient significantly. When the dipole has propagated some distance away from the constriction, the conditions for flow separation are recovered, and new eddies are formed. | |
dc.language | EN | |
dc.publisher | Copernicus Publications under license by EGU – European Geosciences Union GmbH | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | Observations and modeling of tidally generated high-frequency velocity fluctuations downstream of a channel constriction | |
dc.title.alternative | ENEngelskEnglishObservations and modeling of tidally generated high-frequency velocity fluctuations downstream of a channel constriction | |
dc.type | Journal article | |
dc.creator.author | Espenes, Håvard | |
dc.creator.author | Isachsen, Pål Erik | |
dc.creator.author | Nøst, Ole Anders | |
cristin.unitcode | 185,15,22,70 | |
cristin.unitname | Meteorologi og oseanografi | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 2204787 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Ocean Science&rft.volume=19&rft.spage=1633&rft.date=2023 | |
dc.identifier.jtitle | Ocean Science | |
dc.identifier.volume | 19 | |
dc.identifier.issue | 6 | |
dc.identifier.startpage | 1633 | |
dc.identifier.endpage | 1648 | |
dc.identifier.doi | https://doi.org/10.5194/os-19-1633-2023 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 1812-0784 | |
dc.type.version | PublishedVersion | |
dc.relation.project | NFR/308796 | |