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Opgelost silicaat en aluminium in de Groenlandzee, Noorse Zee en Ijslandzee
van Beusekom, J.E.E. (1983). Opgelost silicaat en aluminium in de Groenlandzee, Noorse Zee en Ijslandzee. Interne verslagen Nederlands Instituut voor Onderzoek der Zee, 1983(8). NIOZ: Texel. 45 pp.
Deel van: Interne verslagen Nederlands Instituut voor Onderzoek der Zee. Nederlands Insituut voor Onderzoek der Zee: Texel.
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| Abstract |
During the Meteor cruise 61 Al- and Si-data have been gathered. Results show that two processes influence the Al- and Si concentration. Due to diatom growth the Al- and Si-concentration decreases. In the Deep Water the Al- and Si concentration increases due to the flux from the sediment. A flux calculation shows that not Atlantic Water but a different watermass with higher Si-concentration is the major direct source for Greenland Sea Deep Water. It is suggested that this watermass is part of the Polar Ocean Deep Water. This part of the Polar Ocean Deep Water moves southward along the east of Greenland at depth of 1000-2000 meter. Al/Si- plots show the existence of a surface watermass, an intermediate watermass with a core depth of 1000-2000 meters and a bottom watermass and suggest that Polar Ocean Deep Water is the source of not only the intermediate water in the west of the Greenland Sea but of all the intermediate water in the Greenland Sea, Iceland Sea and Norwegian Sea. Bottom water is formed in the south of the Greenland Sea as a mixture of an Arctic Water type that can be found in the winter at the surface of the Greenland Sea and of Polar Ocean Deep Water. Part of this new-formed Greenland Sea Deep Water mixes in the north of the Greenland Sea with the Intermediate Water and is thus transformed to Norwegian Sea Deep Water. It fills the Lofoten basin from the north. Another part of the Greenland Sea Deep Water enters the south of the Lofoten basin through gaps in the Mohn-ridge. The Norwegian basin and Lofoten basin exchange Norwegian Sea Deep Water through gaps in the east - Jan Mayen fracture zone. |
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