Transport and hydraulically-induced recycling of phosphorus in the North Sea-Baltic Sea transition zone
Bottom-mounted acoustic Doppler current profiler measurementsindicate that the net transport of water (844 m<sup>3</sup> s<sup>-1</sup>) in theLittle Belt makes up only 6% of the total transport betweenthe Baltic Sea and the North Sea. This is a smaller percentagethan the 9%...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2006-06-01
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| Series: | Oceanologia |
| Subjects: | |
| Online Access: | http://www.iopan.gda.pl/oceanologia/48_2.html#A1 |
| _version_ | 1818115410923356160 |
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| author | Christian Christiansen Anke Struve Rikke R. Kepp Lars Chresten Lund-Hansen Morten Holtegaard Nielsen Torben Vang |
| author_facet | Christian Christiansen Anke Struve Rikke R. Kepp Lars Chresten Lund-Hansen Morten Holtegaard Nielsen Torben Vang |
| author_sort | Christian Christiansen |
| collection | DOAJ |
| description | Bottom-mounted acoustic Doppler current profiler measurementsindicate that the net transport of water (844 m<sup>3</sup> s<sup>-1</sup>) in theLittle Belt makes up only 6% of the total transport betweenthe Baltic Sea and the North Sea. This is a smaller percentagethan the 9% commonly found in the literature. Owing to barotropicand tidal currents the gross transport is 5 times larger. Thenet transport is directed towards the North Sea mainly in thetop 32 m of the water column but towards the Baltic Sea it occursin the lower 5 m of the water column. The resulting transportof phosphorus is strongly affected by vertical mixing in an areaof hydraulic control in the narrow part of the Little Belt. Comparisonsof phosphorus profiles in stratified waters and in the mixingarea indicate a yearly entrainment of 15 tonnes P from the bottomwater to the surface layer. This vertical transport of P formspart of an internal loop in the general transport between theBaltic Sea and the North Sea. Compared to the transport observed15-16 years ago, the present net phosphorus transport of 163tonnes yr<sup>-1</sup> from the Baltic Sea through the Little Belt is substantiallylower. |
| first_indexed | 2024-12-11T04:06:11Z |
| format | Article |
| id | doaj.art-15bb6c2c85cc41bbbedca07a9b19e7d2 |
| institution | Directory Open Access Journal |
| issn | 0078-3234 |
| language | English |
| last_indexed | 2024-12-11T04:06:11Z |
| publishDate | 2006-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Oceanologia |
| spelling | doaj.art-15bb6c2c85cc41bbbedca07a9b19e7d22022-12-22T01:21:30ZengElsevierOceanologia0078-32342006-06-01482175191Transport and hydraulically-induced recycling of phosphorus in the North Sea-Baltic Sea transition zoneChristian ChristiansenAnke StruveRikke R. KeppLars Chresten Lund-HansenMorten Holtegaard NielsenTorben VangBottom-mounted acoustic Doppler current profiler measurementsindicate that the net transport of water (844 m<sup>3</sup> s<sup>-1</sup>) in theLittle Belt makes up only 6% of the total transport betweenthe Baltic Sea and the North Sea. This is a smaller percentagethan the 9% commonly found in the literature. Owing to barotropicand tidal currents the gross transport is 5 times larger. Thenet transport is directed towards the North Sea mainly in thetop 32 m of the water column but towards the Baltic Sea it occursin the lower 5 m of the water column. The resulting transportof phosphorus is strongly affected by vertical mixing in an areaof hydraulic control in the narrow part of the Little Belt. Comparisonsof phosphorus profiles in stratified waters and in the mixingarea indicate a yearly entrainment of 15 tonnes P from the bottomwater to the surface layer. This vertical transport of P formspart of an internal loop in the general transport between theBaltic Sea and the North Sea. Compared to the transport observed15-16 years ago, the present net phosphorus transport of 163tonnes yr<sup>-1</sup> from the Baltic Sea through the Little Belt is substantiallylower.http://www.iopan.gda.pl/oceanologia/48_2.html#A1Phosphorus recyclingHydraulic mixingDanish Straits |
| spellingShingle | Christian Christiansen Anke Struve Rikke R. Kepp Lars Chresten Lund-Hansen Morten Holtegaard Nielsen Torben Vang Transport and hydraulically-induced recycling of phosphorus in the North Sea-Baltic Sea transition zone Oceanologia Phosphorus recycling Hydraulic mixing Danish Straits |
| title | Transport and hydraulically-induced recycling of phosphorus in the North Sea-Baltic Sea transition zone |
| title_full | Transport and hydraulically-induced recycling of phosphorus in the North Sea-Baltic Sea transition zone |
| title_fullStr | Transport and hydraulically-induced recycling of phosphorus in the North Sea-Baltic Sea transition zone |
| title_full_unstemmed | Transport and hydraulically-induced recycling of phosphorus in the North Sea-Baltic Sea transition zone |
| title_short | Transport and hydraulically-induced recycling of phosphorus in the North Sea-Baltic Sea transition zone |
| title_sort | transport and hydraulically induced recycling of phosphorus in the north sea baltic sea transition zone |
| topic | Phosphorus recycling Hydraulic mixing Danish Straits |
| url | http://www.iopan.gda.pl/oceanologia/48_2.html#A1 |
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