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Some estimates of the Baltic deep-water transport through the Stolpe trench
Stockholm University, Faculty of Science, Department of Meteorology. Fysisk Oceanografi.
2007 (English)In: Tellus: A, Vol. 59, no 2, 238-248 p.Article in journal (Refereed) Published
Abstract [en]

The subsurface flow of high-saline water masses from the Bornholm Basin through the Stolpe Channel plays an important role for the renewal of the Baltic Central Basin deep waters. In order to determine whether rotating 1½-layer hydraulic theory is an appropriate tool for describing this process, maximal-transport estimates based on climatological data from the Bornholm and Gdansk Basins have been established. These were found to deviate considerably from observational realities, and hence similar hydraulic considerations were also applied to more-or-less synoptic field data from a Finnish field campaign carried through in the mid-1980s. Also in this case significant differences were found between calculated transport capacity and observations. Since it furthermore was demonstrated that the characteristics of the observed cross-channel hydrographic structure could be explained using a frictional-balance model of the deep-water flow, it has been concluded that a hydraulic framework, although providing an upper bound of the transport, is of limited use when dealing with the Stolpe-Channel overflow. Although it cannot be excluded that the inflow is inviscid, but submaximal, it is more likely that the transport is governed by the combined effects of friction and wind forcing.

Place, publisher, year, edition, pages
2007. Vol. 59, no 2, 238-248 p.
Keyword [en]
rotating fluids, hydraulics, deep-water flow, Baltic Sea
URN: urn:nbn:se:su:diva-20469DOI: doi:10.1111/j.1600-0870.2006.00221.xISI: 000244520900007OAI: diva2:186995
Available from: 2007-12-19 Created: 2007-12-19 Last updated: 2011-01-11Bibliographically approved

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Lundberg, Peter
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