Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard)
Glacier naledi are extrusive ice masses that appear in front of glaciers as a consequence of refreezing of meltwater seepage during the accumulation season. These structures provide a unique opportunity to understand subglacial drainage activity during the accumulation season; however, only few deta...
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Cambridge University Press
2016
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ftdoajarticles:oai:doaj.org/article:84acce16f1fc4dbda983ec4f4fda2b59 2023-05-15T13:29:31+02:00 Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard) Łukasz Stachnik Jacob C. Yde Marta Kondracka Dariusz Ignatiuk Magdalena Grzesik 2016-07-01T00:00:00Z https://doi.org/10.1017/aog.2016.9 https://doaj.org/article/84acce16f1fc4dbda983ec4f4fda2b59 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0260305516000094/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2016.9 0260-3055 1727-5644 https://doaj.org/article/84acce16f1fc4dbda983ec4f4fda2b59 Annals of Glaciology, Vol 57, Pp 19-30 (2016) glacier chemistry glacier hydrochemistry ground-penetrating radar ice chemistry meltwater chemistry Meteorology. Climatology QC851-999 article 2016 ftdoajarticles https://doi.org/10.1017/aog.2016.9 2023-03-12T01:31:57Z Glacier naledi are extrusive ice masses that appear in front of glaciers as a consequence of refreezing of meltwater seepage during the accumulation season. These structures provide a unique opportunity to understand subglacial drainage activity during the accumulation season; however, only few detailed studies have previously focused on their characteristics. Here, we investigated glacier-derived naled assemblages in the proglacial zone of the polythermal glacier Werenskioldbreen (27.4 km2) in SW Svalbard. We determined the spatial distribution of naledi using ground penetrating radar surveys. The main subglacial drainage pattern was related to a channel under the medial moraine, and three sources are linked to a distributed subglacial drainage network. The relation between atmospherically-corrected (Ca2+ + Mg2+) and (SO4 2−) in sub-naled waters was closely related to sulphide oxidation coupled with carbonate dissolution (r = 0.99; slope = 1.6). This is consistent with the local lithology, which is dominated by schist containing carbonates. We also found high carbonate saturation indices in pale white ice layers within the naled. We conclude that sulphide oxidation coupled with carbonate dissolution is the dominant chemical weathering process in the subglacial drainage system of Werenskioldbreen during the accumulation season. Article in Journal/Newspaper Annals of Glaciology glacier Svalbard Directory of Open Access Journals: DOAJ Articles Svalbard Werenskioldbreen ENVELOPE(15.336,15.336,77.077,77.077) Annals of Glaciology 57 72 19 30 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
glacier chemistry glacier hydrochemistry ground-penetrating radar ice chemistry meltwater chemistry Meteorology. Climatology QC851-999 |
spellingShingle |
glacier chemistry glacier hydrochemistry ground-penetrating radar ice chemistry meltwater chemistry Meteorology. Climatology QC851-999 Łukasz Stachnik Jacob C. Yde Marta Kondracka Dariusz Ignatiuk Magdalena Grzesik Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard) |
topic_facet |
glacier chemistry glacier hydrochemistry ground-penetrating radar ice chemistry meltwater chemistry Meteorology. Climatology QC851-999 |
description |
Glacier naledi are extrusive ice masses that appear in front of glaciers as a consequence of refreezing of meltwater seepage during the accumulation season. These structures provide a unique opportunity to understand subglacial drainage activity during the accumulation season; however, only few detailed studies have previously focused on their characteristics. Here, we investigated glacier-derived naled assemblages in the proglacial zone of the polythermal glacier Werenskioldbreen (27.4 km2) in SW Svalbard. We determined the spatial distribution of naledi using ground penetrating radar surveys. The main subglacial drainage pattern was related to a channel under the medial moraine, and three sources are linked to a distributed subglacial drainage network. The relation between atmospherically-corrected (Ca2+ + Mg2+) and (SO4 2−) in sub-naled waters was closely related to sulphide oxidation coupled with carbonate dissolution (r = 0.99; slope = 1.6). This is consistent with the local lithology, which is dominated by schist containing carbonates. We also found high carbonate saturation indices in pale white ice layers within the naled. We conclude that sulphide oxidation coupled with carbonate dissolution is the dominant chemical weathering process in the subglacial drainage system of Werenskioldbreen during the accumulation season. |
format |
Article in Journal/Newspaper |
author |
Łukasz Stachnik Jacob C. Yde Marta Kondracka Dariusz Ignatiuk Magdalena Grzesik |
author_facet |
Łukasz Stachnik Jacob C. Yde Marta Kondracka Dariusz Ignatiuk Magdalena Grzesik |
author_sort |
Łukasz Stachnik |
title |
Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard) |
title_short |
Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard) |
title_full |
Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard) |
title_fullStr |
Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard) |
title_full_unstemmed |
Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard) |
title_sort |
glacier naled evolution and relation to the subglacial drainage system based on water chemistry and gpr surveys (werenskioldbreen, sw svalbard) |
publisher |
Cambridge University Press |
publishDate |
2016 |
url |
https://doi.org/10.1017/aog.2016.9 https://doaj.org/article/84acce16f1fc4dbda983ec4f4fda2b59 |
long_lat |
ENVELOPE(15.336,15.336,77.077,77.077) |
geographic |
Svalbard Werenskioldbreen |
geographic_facet |
Svalbard Werenskioldbreen |
genre |
Annals of Glaciology glacier Svalbard |
genre_facet |
Annals of Glaciology glacier Svalbard |
op_source |
Annals of Glaciology, Vol 57, Pp 19-30 (2016) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0260305516000094/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2016.9 0260-3055 1727-5644 https://doaj.org/article/84acce16f1fc4dbda983ec4f4fda2b59 |
op_doi |
https://doi.org/10.1017/aog.2016.9 |
container_title |
Annals of Glaciology |
container_volume |
57 |
container_issue |
72 |
container_start_page |
19 |
op_container_end_page |
30 |
_version_ |
1766001024000065536 |