Tracer?derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007
Tracer?derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007
We investigate the freshwater composition of the shelf and slope of the Arctic Ocean north of the New Siberian Islands using geochemical tracer data (? 18O, Ba, and PO*4) collected following the extreme summer of 2007. We find that the anomalous wind patterns that partly explained the sea ice minimum at this time also led to significant quantities of Pacific?derived surface water in the westernmost part of the Makarov Basin. We also find larger quantities of meteoric water near Lomonosov Ridge than were found in 1995. Dissolved barium is depleted in the upper layers in one region of our study area, probably as a result of biological activity in open waters. Increasingly ice?free conditions compromise the quantitative use of barium as a tracer of river water in the Arctic Ocean.
L07602
Abrahamsen, E. Povl
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Meredith, Michael P.
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Falkner, Kelly Kenison
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Torres-Valdes, Sinhue
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Leng, Melanie J.
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Alkire, Matthew B.
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Bacon, Sheldon
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Laxon, Seymour W.
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Polyakov, Igor
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Ivanov, Vladimir
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2 April 2009
Abrahamsen, E. Povl
fedecbff-9554-480b-a743-8ecf32fdb2f7
Meredith, Michael P.
25fd5f1c-f3ed-40a2-af59-5a7074a25fcd
Falkner, Kelly Kenison
9811a05b-2ae8-4c34-95ab-158d61533d7a
Torres-Valdes, Sinhue
50398d55-4df9-4b9e-a431-16936300650c
Leng, Melanie J.
71755042-2b5f-44a6-8420-019f13a4a946
Alkire, Matthew B.
029043c4-84bc-4d0d-978d-50af95180e8a
Bacon, Sheldon
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Laxon, Seymour W.
9626beb4-a30c-4159-863a-7cfc745067f6
Polyakov, Igor
22dac305-7537-481c-a4f4-c3368c88f6ff
Ivanov, Vladimir
39517f5f-7b2b-484a-957b-57958e6f0da1
Abrahamsen, E. Povl, Meredith, Michael P., Falkner, Kelly Kenison, Torres-Valdes, Sinhue, Leng, Melanie J., Alkire, Matthew B., Bacon, Sheldon, Laxon, Seymour W., Polyakov, Igor and Ivanov, Vladimir
(2009)
Tracer?derived freshwater composition of the Siberian continental shelf and slope following the extreme Arctic summer of 2007.
Geophysical Research Letters, 36, .
(doi:10.1029/2009GL037341).
Abstract
We investigate the freshwater composition of the shelf and slope of the Arctic Ocean north of the New Siberian Islands using geochemical tracer data (? 18O, Ba, and PO*4) collected following the extreme summer of 2007. We find that the anomalous wind patterns that partly explained the sea ice minimum at this time also led to significant quantities of Pacific?derived surface water in the westernmost part of the Makarov Basin. We also find larger quantities of meteoric water near Lomonosov Ridge than were found in 1995. Dissolved barium is depleted in the upper layers in one region of our study area, probably as a result of biological activity in open waters. Increasingly ice?free conditions compromise the quantitative use of barium as a tracer of river water in the Arctic Ocean.
Text
2009GL037341-pip-with-notice_(Bacon).pdf
- Accepted Manuscript
More information
Published date: 2 April 2009
Organisations:
National Oceanography Centre,Southampton
Identifiers
Local EPrints ID: 66351
URI: http://eprints.soton.ac.uk/id/eprint/66351
ISSN: 0094-8276
PURE UUID: 138b69f0-7777-498c-9a61-06cd98a024ee
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Date deposited: 05 Jun 2009
Last modified: 13 Mar 2024 18:17
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Contributors
Author:
E. Povl Abrahamsen
Author:
Michael P. Meredith
Author:
Kelly Kenison Falkner
Author:
Sinhue Torres-Valdes
Author:
Melanie J. Leng
Author:
Matthew B. Alkire
Author:
Sheldon Bacon
Author:
Seymour W. Laxon
Author:
Igor Polyakov
Author:
Vladimir Ivanov
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