Articles | Volume 13, issue 6
https://doi.org/10.5194/os-13-1061-2017
https://doi.org/10.5194/os-13-1061-2017
Research article
 | 
18 Dec 2017
Research article |  | 18 Dec 2017

Internal hydraulic control in the Little Belt, Denmark – observations of flow configurations and water mass formation

Morten Holtegaard Nielsen, Torben Vang, and Lars Chresten Lund-Hansen

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Morten Holtegaard Nielsen on behalf of the Authors (30 Aug 2017)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (17 Sep 2017) by Markus Meier
RR by Anonymous Referee #1 (03 Oct 2017)
ED: Publish subject to minor revisions (Editor review) (09 Oct 2017) by Markus Meier
AR by Morten Holtegaard Nielsen on behalf of the Authors (19 Oct 2017)  Manuscript 
ED: Publish as is (06 Nov 2017) by Markus Meier
AR by Morten Holtegaard Nielsen on behalf of the Authors (12 Nov 2017)
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Short summary
Using field observations we studied the effects that the narrow contraction in the Little Belt, one of the three straits connecting the Baltic Sea and the North Sea, has on currents and water masses. We found the existence of internal hydraulic control, a phenomenon well-known from theoretical and laboratory studies, but surprisingly rarely observed in nature. This phenomenon plays an enormous role due to intense mixing between the water masses, which may drive a highly productive ecosystem.