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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Online Access: | http://hdl.handle.net/11250/2594440 https://doi.org/10.1017/aog.2016.9 |
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fthsvestlandet:oai:hvlopen.brage.unit.no:11250/2594440 2024-03-03T08:36:53+00:00 Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard) Stachnik, Lukasz Mariusz Yde, Jacob Clement Kondracka, M. Ignatiuk, D. Grzesik, M. Svalbard 2016 application/pdf http://hdl.handle.net/11250/2594440 https://doi.org/10.1017/aog.2016.9 eng eng Cambridge University Press Stachnik, Ł., Yde, J. C., Kondracka, M., Ignatiuk, D., & Grzesik, M. (2016). Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard). Annals of Glaciology, 57(72), 19-30. urn:issn:0260-3055 http://hdl.handle.net/11250/2594440 https://doi.org/10.1017/aog.2016.9 cristin:1397070 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © The Author(s) 2016. 19-30 57 Annals of Glaciology 72 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 Journal article Peer reviewed 2016 fthsvestlandet https://doi.org/10.1017/aog.2016.9 2024-02-02T12:40:46Z 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. publishedVersion Article in Journal/Newspaper Annals of Glaciology glacier Svalbard Høgskulen på Vestlandet: HVL Open Svalbard Werenskioldbreen ENVELOPE(15.336,15.336,77.077,77.077) Annals of Glaciology 57 72 19 30 |
institution |
Open Polar |
collection |
Høgskulen på Vestlandet: HVL Open |
op_collection_id |
fthsvestlandet |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 |
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VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 Stachnik, Lukasz Mariusz Yde, Jacob Clement Kondracka, M. Ignatiuk, D. Grzesik, M. Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard) |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 |
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. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Stachnik, Lukasz Mariusz Yde, Jacob Clement Kondracka, M. Ignatiuk, D. Grzesik, M. |
author_facet |
Stachnik, Lukasz Mariusz Yde, Jacob Clement Kondracka, M. Ignatiuk, D. Grzesik, M. |
author_sort |
Stachnik, Lukasz Mariusz |
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 |
http://hdl.handle.net/11250/2594440 https://doi.org/10.1017/aog.2016.9 |
op_coverage |
Svalbard |
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 |
19-30 57 Annals of Glaciology 72 |
op_relation |
Stachnik, Ł., Yde, J. C., Kondracka, M., Ignatiuk, D., & Grzesik, M. (2016). Glacier naled evolution and relation to the subglacial drainage system based on water chemistry and GPR surveys (Werenskioldbreen, SW Svalbard). Annals of Glaciology, 57(72), 19-30. urn:issn:0260-3055 http://hdl.handle.net/11250/2594440 https://doi.org/10.1017/aog.2016.9 cristin:1397070 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © The Author(s) 2016. |
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 |
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1792496264836808704 |