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...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2017
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-11-2305-2017 https://doaj.org/article/e4905923875c40c59388689fbfd39692 |
id |
ftdoajarticles:oai:doaj.org/article:e4905923875c40c59388689fbfd39692 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:e4905923875c40c59388689fbfd39692 2023-05-15T14:50:06+02:00 Discovery and characterization of submarine groundwater discharge in the Siberian Arctic seas: a case study in the Buor-Khaya Gulf, Laptev Sea A. N. Charkin M. Rutgers van der Loeff N. E. Shakhova Ö. Gustafsson O. V. Dudarev M. S. Cherepnev A. N. Salyuk A. V. Koshurnikov E. A. Spivak A. Y. Gunar A. S. Ruban I. P. Semiletov 2017-10-01T00:00:00Z https://doi.org/10.5194/tc-11-2305-2017 https://doaj.org/article/e4905923875c40c59388689fbfd39692 EN eng Copernicus Publications https://www.the-cryosphere.net/11/2305/2017/tc-11-2305-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-11-2305-2017 1994-0416 1994-0424 https://doaj.org/article/e4905923875c40c59388689fbfd39692 The Cryosphere, Vol 11, Pp 2305-2327 (2017) Environmental sciences GE1-350 Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.5194/tc-11-2305-2017 2022-12-30T22:31:08Z 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 ( 224 Ra, 223 Ra, 228 Ra, and 226 Ra) 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. 224 Ra and 224 Ra / 223 Ra 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 × 10 6 m 3 d −1 or 19.9 m 3 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 Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Laptev Sea Talik ENVELOPE(146.601,146.601,59.667,59.667) Khaya ENVELOPE(135.167,135.167,60.567,60.567) Buor-Khaya ENVELOPE(127.803,127.803,72.287,72.287) Yana River ENVELOPE(134.625,134.625,67.662,67.662) The Cryosphere 11 5 2305 2327 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 A. N. Charkin M. Rutgers van der Loeff N. E. Shakhova Ö. Gustafsson O. V. Dudarev M. S. Cherepnev A. N. Salyuk A. V. Koshurnikov E. A. Spivak A. Y. Gunar A. S. Ruban I. P. Semiletov Discovery and characterization of submarine groundwater discharge in the Siberian Arctic seas: a case study in the Buor-Khaya Gulf, Laptev Sea |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
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 ( 224 Ra, 223 Ra, 228 Ra, and 226 Ra) 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. 224 Ra and 224 Ra / 223 Ra 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 × 10 6 m 3 d −1 or 19.9 m 3 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 |
A. N. Charkin M. Rutgers van der Loeff N. E. Shakhova Ö. Gustafsson O. V. Dudarev M. S. Cherepnev A. N. Salyuk A. V. Koshurnikov E. A. Spivak A. Y. Gunar A. S. Ruban I. P. Semiletov |
author_facet |
A. N. Charkin M. Rutgers van der Loeff N. E. Shakhova Ö. Gustafsson O. V. Dudarev M. S. Cherepnev A. N. Salyuk A. V. Koshurnikov E. A. Spivak A. Y. Gunar A. S. Ruban I. P. Semiletov |
author_sort |
A. N. Charkin |
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://doaj.org/article/e4905923875c40c59388689fbfd39692 |
long_lat |
ENVELOPE(146.601,146.601,59.667,59.667) ENVELOPE(135.167,135.167,60.567,60.567) ENVELOPE(127.803,127.803,72.287,72.287) ENVELOPE(134.625,134.625,67.662,67.662) |
geographic |
Arctic Arctic Ocean Laptev Sea Talik Khaya Buor-Khaya Yana River |
geographic_facet |
Arctic Arctic Ocean Laptev Sea Talik Khaya Buor-Khaya 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_source |
The Cryosphere, Vol 11, Pp 2305-2327 (2017) |
op_relation |
https://www.the-cryosphere.net/11/2305/2017/tc-11-2305-2017.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-11-2305-2017 1994-0416 1994-0424 https://doaj.org/article/e4905923875c40c59388689fbfd39692 |
op_doi |
https://doi.org/10.5194/tc-11-2305-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
5 |
container_start_page |
2305 |
op_container_end_page |
2327 |
_version_ |
1766321177181028352 |