Discovery and characterization of submarine groundwater discharge in the Siberian Arctic seas: a case study in the Buor-Khaya Gulf, Laptev Sea
It has been suggested that increasing terrestrial water discharge to the Arctic Ocean may partly occur as submarine groundwater discharge (SGD), yet there are no direct observations of this phenomenon in the Arctic shelf seas. This study tests the hypothesis that SGD does exist in the Siberian Arcti...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00008460 2023-05-15T14:48:17+02:00 Discovery and characterization of submarine groundwater discharge in the Siberian Arctic seas: a case study in the Buor-Khaya Gulf, Laptev Sea Charkin, Alexander N. Rutgers van der Loeff, Michiel Shakhova, Natalia E. Gustafsson, Örjan Dudarev, Oleg V. Cherepnev, Maxim S. Salyuk, Anatoly N. Koshurnikov, Andrey V. Spivak, Eduard A. Gunar, Alexey Y. Ruban, Alexey S. Semiletov, Igor P. 2017-10 electronic https://doi.org/10.5194/tc-11-2305-2017 https://noa.gwlb.de/receive/cop_mods_00008460 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00008417/tc-11-2305-2017.pdf https://tc.copernicus.org/articles/11/2305/2017/tc-11-2305-2017.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-2305-2017 https://noa.gwlb.de/receive/cop_mods_00008460 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00008417/tc-11-2305-2017.pdf https://tc.copernicus.org/articles/11/2305/2017/tc-11-2305-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/tc-11-2305-2017 2022-02-08T22:58:02Z It has been suggested that increasing terrestrial water discharge to the Arctic Ocean may partly occur as submarine groundwater discharge (SGD), yet there are no direct observations of this phenomenon in the Arctic shelf seas. This study tests the hypothesis that SGD does exist in the Siberian Arctic Shelf seas, but its dynamics may be largely controlled by complicated geocryological conditions such as permafrost. The field-observational approach in the southeastern Laptev Sea used a combination of hydrological (temperature, salinity), geological (bottom sediment drilling, geoelectric surveys), and geochemical (224Ra, 223Ra, 228Ra, and 226Ra) techniques. Active SGD was documented in the vicinity of the Lena River delta with two different operational modes. In the first system, groundwater discharges through tectonogenic permafrost talik zones was registered in both winter and summer. The second SGD mechanism was cryogenic squeezing out of brine and water-soluble salts detected on the periphery of ice hummocks in the winter. The proposed mechanisms of groundwater transport and discharge in the Arctic land-shelf system is elaborated. Through salinity vs. 224Ra and 224Ra / 223Ra diagrams, the three main SGD-influenced water masses were identified and their end-member composition was constrained. Based on simple mass-balance box models, discharge rates at sites in the submarine permafrost talik zone were 1. 7 × 106 m3 d−1 or 19.9 m3 s−1, which is much higher than the April discharge of the Yana River. Further studies should apply these techniques on a broader scale with the objective of elucidating the relative importance of the SGD transport vector relative to surface freshwater discharge for both water balance and aquatic components such as dissolved organic carbon, carbon dioxide, methane, and nutrients. Article in Journal/Newspaper Arctic Arctic Ocean Ice laptev Laptev Sea lena river permafrost The Cryosphere Niedersächsisches Online-Archiv NOA Arctic Arctic Ocean Buor-Khaya ENVELOPE(127.803,127.803,72.287,72.287) Khaya ENVELOPE(135.167,135.167,60.567,60.567) Laptev Sea Talik ENVELOPE(146.601,146.601,59.667,59.667) Yana River ENVELOPE(134.625,134.625,67.662,67.662) The Cryosphere 11 5 2305 2327 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Charkin, Alexander N. Rutgers van der Loeff, Michiel Shakhova, Natalia E. Gustafsson, Örjan Dudarev, Oleg V. Cherepnev, Maxim S. Salyuk, Anatoly N. Koshurnikov, Andrey V. Spivak, Eduard A. Gunar, Alexey Y. Ruban, Alexey S. Semiletov, Igor P. Discovery and characterization of submarine groundwater discharge in the Siberian Arctic seas: a case study in the Buor-Khaya Gulf, Laptev Sea |
topic_facet |
article Verlagsveröffentlichung |
description |
It has been suggested that increasing terrestrial water discharge to the Arctic Ocean may partly occur as submarine groundwater discharge (SGD), yet there are no direct observations of this phenomenon in the Arctic shelf seas. This study tests the hypothesis that SGD does exist in the Siberian Arctic Shelf seas, but its dynamics may be largely controlled by complicated geocryological conditions such as permafrost. The field-observational approach in the southeastern Laptev Sea used a combination of hydrological (temperature, salinity), geological (bottom sediment drilling, geoelectric surveys), and geochemical (224Ra, 223Ra, 228Ra, and 226Ra) techniques. Active SGD was documented in the vicinity of the Lena River delta with two different operational modes. In the first system, groundwater discharges through tectonogenic permafrost talik zones was registered in both winter and summer. The second SGD mechanism was cryogenic squeezing out of brine and water-soluble salts detected on the periphery of ice hummocks in the winter. The proposed mechanisms of groundwater transport and discharge in the Arctic land-shelf system is elaborated. Through salinity vs. 224Ra and 224Ra / 223Ra diagrams, the three main SGD-influenced water masses were identified and their end-member composition was constrained. Based on simple mass-balance box models, discharge rates at sites in the submarine permafrost talik zone were 1. 7 × 106 m3 d−1 or 19.9 m3 s−1, which is much higher than the April discharge of the Yana River. Further studies should apply these techniques on a broader scale with the objective of elucidating the relative importance of the SGD transport vector relative to surface freshwater discharge for both water balance and aquatic components such as dissolved organic carbon, carbon dioxide, methane, and nutrients. |
format |
Article in Journal/Newspaper |
author |
Charkin, Alexander N. Rutgers van der Loeff, Michiel Shakhova, Natalia E. Gustafsson, Örjan Dudarev, Oleg V. Cherepnev, Maxim S. Salyuk, Anatoly N. Koshurnikov, Andrey V. Spivak, Eduard A. Gunar, Alexey Y. Ruban, Alexey S. Semiletov, Igor P. |
author_facet |
Charkin, Alexander N. Rutgers van der Loeff, Michiel Shakhova, Natalia E. Gustafsson, Örjan Dudarev, Oleg V. Cherepnev, Maxim S. Salyuk, Anatoly N. Koshurnikov, Andrey V. Spivak, Eduard A. Gunar, Alexey Y. Ruban, Alexey S. Semiletov, Igor P. |
author_sort |
Charkin, Alexander N. |
title |
Discovery and characterization of submarine groundwater discharge in the Siberian Arctic seas: a case study in the Buor-Khaya Gulf, Laptev Sea |
title_short |
Discovery and characterization of submarine groundwater discharge in the Siberian Arctic seas: a case study in the Buor-Khaya Gulf, Laptev Sea |
title_full |
Discovery and characterization of submarine groundwater discharge in the Siberian Arctic seas: a case study in the Buor-Khaya Gulf, Laptev Sea |
title_fullStr |
Discovery and characterization of submarine groundwater discharge in the Siberian Arctic seas: a case study in the Buor-Khaya Gulf, Laptev Sea |
title_full_unstemmed |
Discovery and characterization of submarine groundwater discharge in the Siberian Arctic seas: a case study in the Buor-Khaya Gulf, Laptev Sea |
title_sort |
discovery and characterization of submarine groundwater discharge in the siberian arctic seas: a case study in the buor-khaya gulf, laptev sea |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-2305-2017 https://noa.gwlb.de/receive/cop_mods_00008460 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00008417/tc-11-2305-2017.pdf https://tc.copernicus.org/articles/11/2305/2017/tc-11-2305-2017.pdf |
long_lat |
ENVELOPE(127.803,127.803,72.287,72.287) ENVELOPE(135.167,135.167,60.567,60.567) ENVELOPE(146.601,146.601,59.667,59.667) ENVELOPE(134.625,134.625,67.662,67.662) |
geographic |
Arctic Arctic Ocean Buor-Khaya Khaya Laptev Sea Talik Yana River |
geographic_facet |
Arctic Arctic Ocean Buor-Khaya Khaya Laptev Sea Talik Yana River |
genre |
Arctic Arctic Ocean Ice laptev Laptev Sea lena river permafrost The Cryosphere |
genre_facet |
Arctic Arctic Ocean Ice laptev Laptev Sea lena river permafrost The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-11-2305-2017 https://noa.gwlb.de/receive/cop_mods_00008460 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00008417/tc-11-2305-2017.pdf https://tc.copernicus.org/articles/11/2305/2017/tc-11-2305-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-11-2305-2017 |
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The Cryosphere |
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