Distribution of 210Pb and 210Po in the Arctic water column during the 2007 sea-ice minimum

210Pb and 210Po are naturally occurring radionuclides that are commonly used as a proxy for particle and carbon export. In this study, the distribution of the 210Po/210Pb pair was investigated in the water column of the Barents, Kara and Laptev Seas and the Nansen, Amundsen and Makarov Basins in ord...

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Bibliographic Details
Authors: Roca-Martí, Montserrat|||0000-0002-4719-9358, Puigcorbé, Viena|||0000-0001-5892-2305, Friedrich, Jana, van der Loeff, Michiel Rutgers, Rabe, Benjamin, Korhonen, Meri, Cámara Mor, Patricia, García Orellana, Jordi|||0000-0002-0543-2641, Masqué Barri, Pere|||0000-0002-1789-320X
Format: article
Publication Date:2018
Country:España
Institution:Universitat Autònoma de Barcelona
Repository:Dipòsit Digital de Documents de la UAB
Language:English
OAI Identifier:oai:ddd.uab.cat:311509
Online Access:https://ddd.uab.cat/record/311509
https://dx.doi.org/urn:doi:10.1016/j.dsr.2018.09.011
Access Level:Open access
Keyword:210 Po/210 Pb
2007 sea-ice minimum
Annual new primary production
Arctic Ocean
Particle export
Scavenging
Description
Summary:210Pb and 210Po are naturally occurring radionuclides that are commonly used as a proxy for particle and carbon export. In this study, the distribution of the 210Po/210Pb pair was investigated in the water column of the Barents, Kara and Laptev Seas and the Nansen, Amundsen and Makarov Basins in order to understand the particle dynamics in the Arctic Ocean during the 2007 sea-ice minimum (August-September). Minimum activities of total 210Pb and 210Po were found in the upper and lower haloclines (approx. 60-130 m), which are partly attributed to particle scavenging over the shelves, boundary current transport and subsequent advection of the water with low 210Pb and 210Po activities into the central Arctic. Widespread and substantial (.

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