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The saturation of calcite and aragonite in the Arctic Ocean
Responsible organisation
2005 (English)In: Marine Chemistry, ISSN 0304-4203, E-ISSN 1872-7581, Vol. 94, no 1-4, 101-110 p.Article in journal (Refereed) Published
Abstract [en]

We report on the chemical saturation of CaCO(3) in the waters of the Arctic Ocean calculated from total alkalinity (AT) and total dissolved inorganic carbon (C(T)) Data based on four different expeditions are presented: International Arctic Ocean Expedition (IAOE-91), Arctic Ocean Section 94 (AOS94), Polarstern Arctic ‘96 expedition (ACSYS 96), and Joint Ocean Ice Study 97 (JOIS 97). The results show a lysocline at around 3500 in for aragonite and that most of the Arctic Ocean sea floor lies above the lysocline for calcite. The only anomaly is the low degree of saturation at the shelf break depth in the Canadian Basin seen in the sections of the AOS94 and JOIS 97 cruises, correlated with nutrient maxima and very low 0, concentration, suggesting decomposition of organic matter. The insignificant variability in degree of saturation between the deep waters of the different basins in the Arctic Ocean indicates a very low sedimentation/remineralisation of organic soft matter. (c) 2004 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2005. Vol. 94, no 1-4, 101-110 p.
Keyword [en]
Arctic Ocean; Canadian Basin; Eurasian Basin; CaCO(3); alkalinity; inorganic carbon
National Category
Natural Sciences
Research subject
SWEDARCTIC 1991, Arctic Ocean 1991; SWEDARCTIC 1996, Arctic Ocean 1996
Identifiers
URN: urn:nbn:se:polar:diva-3218DOI: 10.1016/j.marchem.2004.08.010OAI: oai:DiVA.org:polar-3218DiVA: diva2:1050206
Available from: 2016-11-28 Created: 2016-11-21 Last updated: 2016-11-28

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