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The effect of the Siberian tundra on the environment of the shelf seas and the Arctic Ocean

Anderson, Leif G. ; Carlsson, Kjell Åke ; Hall, Per O.J. ; Holm, Elis LU ; Josefsson, Dan LU ; Olsson, Kristina ; Persson, Bertil R.R. LU orcid ; Persson, Tomas ; Roos, Per LU and Tengberg, Anders , et al. (1999) In Ambio 28(3). p.270-280
Abstract

The Tundra Ecology -94 expedition investigated inflow of inorganic and organic carbon to the shelf seas by river runoff, and its transformation by biochemical processes in seawater and sediment. In addition, anthropogenic radionuclides, 137Cs, 90Sr, and 239,240Pu, were studied in water and sediments. The distribution of dissolved inorganic carbon indicates that the majority of the Ob and Yenisey discharges flow into the Laptev Sea before entering the central Arctic Ocean. The sediment study shows that there is a marked difference in benthic oxygen uptake, efflux of dissolved inorganic carbon and nutrients between localities. 137Cs activity from the Chernobyl accident is 30% in the Barents,... (More)

The Tundra Ecology -94 expedition investigated inflow of inorganic and organic carbon to the shelf seas by river runoff, and its transformation by biochemical processes in seawater and sediment. In addition, anthropogenic radionuclides, 137Cs, 90Sr, and 239,240Pu, were studied in water and sediments. The distribution of dissolved inorganic carbon indicates that the majority of the Ob and Yenisey discharges flow into the Laptev Sea before entering the central Arctic Ocean. The sediment study shows that there is a marked difference in benthic oxygen uptake, efflux of dissolved inorganic carbon and nutrients between localities. 137Cs activity from the Chernobyl accident is 30% in the Barents, Kara, and Laptev Seas. 137Cs increased from 5-8 Bq m-3 in Barents Sea, 5-13 Bq m-3 in the Kara Sea to 8-15 Bq m-3 in the Laptev Sea, but with locally low concentrations at the river mouths. Corresponding values for 90Sr were 2.5, 3, and 4 Bq m-3, respectively.

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publishing date
type
Contribution to journal
publication status
published
in
Ambio
volume
28
issue
3
pages
11 pages
publisher
Springer
external identifiers
  • scopus:0033039941
ISSN
0044-7447
language
English
LU publication?
yes
id
8a84c8c9-c95a-429d-97c3-1be1656cb3d4
date added to LUP
2020-05-07 21:02:26
date last changed
2024-04-03 07:27:44
@article{8a84c8c9-c95a-429d-97c3-1be1656cb3d4,
  abstract     = {{<p>The Tundra Ecology -94 expedition investigated inflow of inorganic and organic carbon to the shelf seas by river runoff, and its transformation by biochemical processes in seawater and sediment. In addition, anthropogenic radionuclides, <sup>137</sup>Cs, <sup>90</sup>Sr, and <sup>239,240</sup>Pu, were studied in water and sediments. The distribution of dissolved inorganic carbon indicates that the majority of the Ob and Yenisey discharges flow into the Laptev Sea before entering the central Arctic Ocean. The sediment study shows that there is a marked difference in benthic oxygen uptake, efflux of dissolved inorganic carbon and nutrients between localities. <sup>137</sup>Cs activity from the Chernobyl accident is 30% in the Barents, Kara, and Laptev Seas. <sup>137</sup>Cs increased from 5-8 Bq m<sup>-3</sup> in Barents Sea, 5-13 Bq m<sup>-3</sup> in the Kara Sea to 8-15 Bq m<sup>-3</sup> in the Laptev Sea, but with locally low concentrations at the river mouths. Corresponding values for <sup>90</sup>Sr were 2.5, 3, and 4 Bq m<sup>-3</sup>, respectively.</p>}},
  author       = {{Anderson, Leif G. and Carlsson, Kjell Åke and Hall, Per O.J. and Holm, Elis and Josefsson, Dan and Olsson, Kristina and Persson, Bertil R.R. and Persson, Tomas and Roos, Per and Tengberg, Anders and Wedborg, Margareta}},
  issn         = {{0044-7447}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{3}},
  pages        = {{270--280}},
  publisher    = {{Springer}},
  series       = {{Ambio}},
  title        = {{The effect of the Siberian tundra on the environment of the shelf seas and the Arctic Ocean}},
  volume       = {{28}},
  year         = {{1999}},
}