The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean
©2020. American Geophysical Union. A major surface circulation feature of the Arctic Ocean is the Transpolar Drift (TPD), a current that transports river‐influenced shelf water from the Laptev and East Siberian Seas toward the center of the basin and Fram Strait. In 2015, the international GEOTRACES...
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ftsouthmissispun:oai:aquila.usm.edu:fac_pubs-19582 2023-07-30T04:00:35+02:00 The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean Charette, Matthew A. Kipp, Lauren E. Jensen, Laramie T. Dabrowski, Jessica S. Whitmore, Laura M. Fitzsimmons, Jessica N. Williford, Tatiana Ulfsbo, Adam Jones, Elizabeth Bundy, Randelle M. Vivancos, Sebastian M. Pahnke, Katharina John, Seth G. Xiang, Yang Hatta, Mariko Petrova, Mariia V. Heimbürger-Boavida, Lars Eric Bauch, Dorothea Newton, Robert Pasqualini, Angelica Agather, Alison M. Amon, Rainer M.W. Anderson, Robert F. Andersson, Per S. Benner, Ronald Bowman, Katlin L. Edwards, R. Lawrence Gdaniec, Sandra Gerringa, Loes J.A. González, Aridane G. Granskog, Mats Haley, Brian Hammerschmidt, Chad R. 2020-05-01T07:00:00Z https://aquila.usm.edu/fac_pubs/18268 https://doi-org.lynx.lib.usm.edu/10.1029/2019JC015920 unknown The Aquila Digital Community https://aquila.usm.edu/fac_pubs/18268 https://doi-org.lynx.lib.usm.edu/10.1029/2019JC015920 Faculty Publications Arctic Ocean carbon GEOTRACES] nutrients trace elements Transpolar Drift Oceanography and Atmospheric Sciences and Meteorology Physical Sciences and Mathematics text 2020 ftsouthmissispun 2023-07-15T18:54:44Z ©2020. American Geophysical Union. A major surface circulation feature of the Arctic Ocean is the Transpolar Drift (TPD), a current that transports river‐influenced shelf water from the Laptev and East Siberian Seas toward the center of the basin and Fram Strait. In 2015, the international GEOTRACES program included a high‐resolution pan‐Arctic survey of carbon, nutrients, and a suite of trace elements and isotopes (TEIs). The cruises bisected the TPD at two locations in the central basin, which were defined by maxima in meteoric water and dissolved organic carbon concentrations that spanned 600 km horizontally and ~25–50 m vertically. Dissolved TEIs such as Fe, Co, Ni, Cu, Hg, Nd, and Th, which are generally particle‐reactive but can be complexed by organic matter, were observed at concentrations much higher than expected for the open ocean setting. Other trace element concentrations such as Al, V, Ga, and Pb were lower than expected due to scavenging over the productive East Siberian and Laptev shelf seas. Using a combination of radionuclide tracers and ice drift modeling, the transport rate for the core of the TPD was estimated at 0.9 ± 0.4 Sv (106 m3 s−1). This rate was used to derive the mass flux for TEIs that were enriched in the TPD, revealing the importance of lateral transport in supplying materials beneath the ice to the central Arctic Ocean and potentially to the North Atlantic Ocean via Fram Strait. Continued intensification of the Arctic hydrologic cycle and permafrost degradation will likely lead to an increase in the flux of TEIs into the Arctic Ocean. Text Arctic Arctic Ocean Fram Strait Ice laptev North Atlantic permafrost The University of Southern Mississippi: The Aquila Digital Community Arctic Arctic Ocean Central Basin ENVELOPE(43.000,43.000,73.500,73.500) |
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Open Polar |
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The University of Southern Mississippi: The Aquila Digital Community |
op_collection_id |
ftsouthmissispun |
language |
unknown |
topic |
Arctic Ocean carbon GEOTRACES] nutrients trace elements Transpolar Drift Oceanography and Atmospheric Sciences and Meteorology Physical Sciences and Mathematics |
spellingShingle |
Arctic Ocean carbon GEOTRACES] nutrients trace elements Transpolar Drift Oceanography and Atmospheric Sciences and Meteorology Physical Sciences and Mathematics Charette, Matthew A. Kipp, Lauren E. Jensen, Laramie T. Dabrowski, Jessica S. Whitmore, Laura M. Fitzsimmons, Jessica N. Williford, Tatiana Ulfsbo, Adam Jones, Elizabeth Bundy, Randelle M. Vivancos, Sebastian M. Pahnke, Katharina John, Seth G. Xiang, Yang Hatta, Mariko Petrova, Mariia V. Heimbürger-Boavida, Lars Eric Bauch, Dorothea Newton, Robert Pasqualini, Angelica Agather, Alison M. Amon, Rainer M.W. Anderson, Robert F. Andersson, Per S. Benner, Ronald Bowman, Katlin L. Edwards, R. Lawrence Gdaniec, Sandra Gerringa, Loes J.A. González, Aridane G. Granskog, Mats Haley, Brian Hammerschmidt, Chad R. The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean |
topic_facet |
Arctic Ocean carbon GEOTRACES] nutrients trace elements Transpolar Drift Oceanography and Atmospheric Sciences and Meteorology Physical Sciences and Mathematics |
description |
©2020. American Geophysical Union. A major surface circulation feature of the Arctic Ocean is the Transpolar Drift (TPD), a current that transports river‐influenced shelf water from the Laptev and East Siberian Seas toward the center of the basin and Fram Strait. In 2015, the international GEOTRACES program included a high‐resolution pan‐Arctic survey of carbon, nutrients, and a suite of trace elements and isotopes (TEIs). The cruises bisected the TPD at two locations in the central basin, which were defined by maxima in meteoric water and dissolved organic carbon concentrations that spanned 600 km horizontally and ~25–50 m vertically. Dissolved TEIs such as Fe, Co, Ni, Cu, Hg, Nd, and Th, which are generally particle‐reactive but can be complexed by organic matter, were observed at concentrations much higher than expected for the open ocean setting. Other trace element concentrations such as Al, V, Ga, and Pb were lower than expected due to scavenging over the productive East Siberian and Laptev shelf seas. Using a combination of radionuclide tracers and ice drift modeling, the transport rate for the core of the TPD was estimated at 0.9 ± 0.4 Sv (106 m3 s−1). This rate was used to derive the mass flux for TEIs that were enriched in the TPD, revealing the importance of lateral transport in supplying materials beneath the ice to the central Arctic Ocean and potentially to the North Atlantic Ocean via Fram Strait. Continued intensification of the Arctic hydrologic cycle and permafrost degradation will likely lead to an increase in the flux of TEIs into the Arctic Ocean. |
format |
Text |
author |
Charette, Matthew A. Kipp, Lauren E. Jensen, Laramie T. Dabrowski, Jessica S. Whitmore, Laura M. Fitzsimmons, Jessica N. Williford, Tatiana Ulfsbo, Adam Jones, Elizabeth Bundy, Randelle M. Vivancos, Sebastian M. Pahnke, Katharina John, Seth G. Xiang, Yang Hatta, Mariko Petrova, Mariia V. Heimbürger-Boavida, Lars Eric Bauch, Dorothea Newton, Robert Pasqualini, Angelica Agather, Alison M. Amon, Rainer M.W. Anderson, Robert F. Andersson, Per S. Benner, Ronald Bowman, Katlin L. Edwards, R. Lawrence Gdaniec, Sandra Gerringa, Loes J.A. González, Aridane G. Granskog, Mats Haley, Brian Hammerschmidt, Chad R. |
author_facet |
Charette, Matthew A. Kipp, Lauren E. Jensen, Laramie T. Dabrowski, Jessica S. Whitmore, Laura M. Fitzsimmons, Jessica N. Williford, Tatiana Ulfsbo, Adam Jones, Elizabeth Bundy, Randelle M. Vivancos, Sebastian M. Pahnke, Katharina John, Seth G. Xiang, Yang Hatta, Mariko Petrova, Mariia V. Heimbürger-Boavida, Lars Eric Bauch, Dorothea Newton, Robert Pasqualini, Angelica Agather, Alison M. Amon, Rainer M.W. Anderson, Robert F. Andersson, Per S. Benner, Ronald Bowman, Katlin L. Edwards, R. Lawrence Gdaniec, Sandra Gerringa, Loes J.A. González, Aridane G. Granskog, Mats Haley, Brian Hammerschmidt, Chad R. |
author_sort |
Charette, Matthew A. |
title |
The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean |
title_short |
The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean |
title_full |
The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean |
title_fullStr |
The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean |
title_full_unstemmed |
The Transpolar Drift as a Source of Riverine and Shelf-Derived Trace Elements to the Central Arctic Ocean |
title_sort |
transpolar drift as a source of riverine and shelf-derived trace elements to the central arctic ocean |
publisher |
The Aquila Digital Community |
publishDate |
2020 |
url |
https://aquila.usm.edu/fac_pubs/18268 https://doi-org.lynx.lib.usm.edu/10.1029/2019JC015920 |
long_lat |
ENVELOPE(43.000,43.000,73.500,73.500) |
geographic |
Arctic Arctic Ocean Central Basin |
geographic_facet |
Arctic Arctic Ocean Central Basin |
genre |
Arctic Arctic Ocean Fram Strait Ice laptev North Atlantic permafrost |
genre_facet |
Arctic Arctic Ocean Fram Strait Ice laptev North Atlantic permafrost |
op_source |
Faculty Publications |
op_relation |
https://aquila.usm.edu/fac_pubs/18268 https://doi-org.lynx.lib.usm.edu/10.1029/2019JC015920 |
_version_ |
1772811085196296192 |