Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ18O and alkalinity (1929–2002 A.D.)
The long-term data sets of total alkalinity (TA) (1929–2002 A.D.) and δ18O (1966–2002 A.D.) are used to investigate freshwater and brine distributions in the Arctic Ocean. Fractions of sea ice meltwater and other freshwaters (OF) (precipitation, river runoff, and freshwater carried by Pacific water...
Published in: | Journal of Geophysical Research |
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Language: | English |
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AGU (American Geophysical Union)
2005
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Online Access: | https://oceanrep.geomar.de/id/eprint/31675/ https://oceanrep.geomar.de/id/eprint/31675/1/Yamamoto-Kawai_et_al-2005-Journal_of_Geophysical_Research__Solid_Earth_%281978-2012%29.pdf https://doi.org/10.1029/2004JC002793 |
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ftoceanrep:oai:oceanrep.geomar.de:31675 2023-05-15T14:26:50+02:00 Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ18O and alkalinity (1929–2002 A.D.) Yamamoto-Kawai, Michiyo Tanaka, Noriyuki Pivovarov, S. 2005 text https://oceanrep.geomar.de/id/eprint/31675/ https://oceanrep.geomar.de/id/eprint/31675/1/Yamamoto-Kawai_et_al-2005-Journal_of_Geophysical_Research__Solid_Earth_%281978-2012%29.pdf https://doi.org/10.1029/2004JC002793 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/31675/1/Yamamoto-Kawai_et_al-2005-Journal_of_Geophysical_Research__Solid_Earth_%281978-2012%29.pdf Yamamoto-Kawai, M., Tanaka, N. and Pivovarov, S. (2005) Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ18O and alkalinity (1929–2002 A.D.). Journal of Geophysical Research - Oceans, 110 (C10). pp. 1978-2012. DOI 10.1029/2004JC002793 <https://doi.org/10.1029/2004JC002793>. doi:10.1029/2004JC002793 Article PeerReviewed 2005 ftoceanrep https://doi.org/10.1029/2004JC002793 2023-04-07T15:24:10Z The long-term data sets of total alkalinity (TA) (1929–2002 A.D.) and δ18O (1966–2002 A.D.) are used to investigate freshwater and brine distributions in the Arctic Ocean. Fractions of sea ice meltwater and other freshwaters (OF) (precipitation, river runoff, and freshwater carried by Pacific water implied as salinity deficit) are calculated on the basis of salinity-TA and salinity-δ18O relationships. Rejected brine during sea ice growth resides in surface water in the central Arctic Ocean, while net melting is found along the surface flow of water from the Pacific and Atlantic oceans. Distribution of OF at 10 m water depth suggests that Russian runoff leaves the shelf mainly west of the Mendeleyev Ridge, enters into the deep basin, and exits from the ocean through the western part of Fram Strait. The influence of Mackenzie River water is limited in the region and in depth. Accumulation of freshwater in the Canadian Basin is caused by deep penetration of OF with brine, indicating the transport of freshwater by shelf-derived water. The major origin of shelf-derived water entering into the upper halocline layer in the Canadian Basin should be the Chukchi and East Siberian Sea shelves, and the main freshwater sources are the salinity deficit of Pacific water and/or Russian runoff. An increase in OF inventory accompanied by an increase in brine content may suggest an increase of the shelf-derived water supply into the western Canadian Basin in anticyclonic years. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Chukchi East Siberian Sea Fram Strait Mackenzie river Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Mackenzie River Mendeleyev ENVELOPE(14.517,14.517,-71.900,-71.900) Mendeleyev Ridge ENVELOPE(-178.000,-178.000,80.000,80.000) Pacific Journal of Geophysical Research 110 C10 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The long-term data sets of total alkalinity (TA) (1929–2002 A.D.) and δ18O (1966–2002 A.D.) are used to investigate freshwater and brine distributions in the Arctic Ocean. Fractions of sea ice meltwater and other freshwaters (OF) (precipitation, river runoff, and freshwater carried by Pacific water implied as salinity deficit) are calculated on the basis of salinity-TA and salinity-δ18O relationships. Rejected brine during sea ice growth resides in surface water in the central Arctic Ocean, while net melting is found along the surface flow of water from the Pacific and Atlantic oceans. Distribution of OF at 10 m water depth suggests that Russian runoff leaves the shelf mainly west of the Mendeleyev Ridge, enters into the deep basin, and exits from the ocean through the western part of Fram Strait. The influence of Mackenzie River water is limited in the region and in depth. Accumulation of freshwater in the Canadian Basin is caused by deep penetration of OF with brine, indicating the transport of freshwater by shelf-derived water. The major origin of shelf-derived water entering into the upper halocline layer in the Canadian Basin should be the Chukchi and East Siberian Sea shelves, and the main freshwater sources are the salinity deficit of Pacific water and/or Russian runoff. An increase in OF inventory accompanied by an increase in brine content may suggest an increase of the shelf-derived water supply into the western Canadian Basin in anticyclonic years. |
format |
Article in Journal/Newspaper |
author |
Yamamoto-Kawai, Michiyo Tanaka, Noriyuki Pivovarov, S. |
spellingShingle |
Yamamoto-Kawai, Michiyo Tanaka, Noriyuki Pivovarov, S. Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ18O and alkalinity (1929–2002 A.D.) |
author_facet |
Yamamoto-Kawai, Michiyo Tanaka, Noriyuki Pivovarov, S. |
author_sort |
Yamamoto-Kawai, Michiyo |
title |
Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ18O and alkalinity (1929–2002 A.D.) |
title_short |
Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ18O and alkalinity (1929–2002 A.D.) |
title_full |
Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ18O and alkalinity (1929–2002 A.D.) |
title_fullStr |
Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ18O and alkalinity (1929–2002 A.D.) |
title_full_unstemmed |
Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ18O and alkalinity (1929–2002 A.D.) |
title_sort |
freshwater and brine behaviors in the arctic ocean deduced from historical data of δ18o and alkalinity (1929–2002 a.d.) |
publisher |
AGU (American Geophysical Union) |
publishDate |
2005 |
url |
https://oceanrep.geomar.de/id/eprint/31675/ https://oceanrep.geomar.de/id/eprint/31675/1/Yamamoto-Kawai_et_al-2005-Journal_of_Geophysical_Research__Solid_Earth_%281978-2012%29.pdf https://doi.org/10.1029/2004JC002793 |
long_lat |
ENVELOPE(166.000,166.000,74.000,74.000) ENVELOPE(14.517,14.517,-71.900,-71.900) ENVELOPE(-178.000,-178.000,80.000,80.000) |
geographic |
Arctic Arctic Ocean East Siberian Sea Mackenzie River Mendeleyev Mendeleyev Ridge Pacific |
geographic_facet |
Arctic Arctic Ocean East Siberian Sea Mackenzie River Mendeleyev Mendeleyev Ridge Pacific |
genre |
Arctic Arctic Arctic Ocean Chukchi East Siberian Sea Fram Strait Mackenzie river Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Chukchi East Siberian Sea Fram Strait Mackenzie river Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/31675/1/Yamamoto-Kawai_et_al-2005-Journal_of_Geophysical_Research__Solid_Earth_%281978-2012%29.pdf Yamamoto-Kawai, M., Tanaka, N. and Pivovarov, S. (2005) Freshwater and brine behaviors in the Arctic Ocean deduced from historical data of δ18O and alkalinity (1929–2002 A.D.). Journal of Geophysical Research - Oceans, 110 (C10). pp. 1978-2012. DOI 10.1029/2004JC002793 <https://doi.org/10.1029/2004JC002793>. doi:10.1029/2004JC002793 |
op_doi |
https://doi.org/10.1029/2004JC002793 |
container_title |
Journal of Geophysical Research |
container_volume |
110 |
container_issue |
C10 |
_version_ |
1766300290431057920 |