Evidence of glacier-permafrost interactions associated with hydro-geomorphological processes and landforms at Snøhetta, Dovrefjell, Norway
Glacier-permafrost interactions are investigated to understand glacial-hydrological influence along a partly glacierised valley on the NE flank of the Snøhetta massif, Dovrefjell, southern Norway. Of particular interest is how processes are controlled by a hydrological connection between landforms....
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Taylor and Francis
2021
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Online Access: | https://hdl.handle.net/11250/2986538 https://doi.org/10.1080/04353676.2021.1955539 |
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ftunivbergen:oai:bora.uib.no:11250/2986538 2023-05-15T16:02:19+02:00 Evidence of glacier-permafrost interactions associated with hydro-geomorphological processes and landforms at Snøhetta, Dovrefjell, Norway Miesen, Floreana Dahl, Svein Olaf Schrott, Lothar 2021 application/pdf https://hdl.handle.net/11250/2986538 https://doi.org/10.1080/04353676.2021.1955539 eng eng Taylor and Francis urn:issn:0435-3676 https://hdl.handle.net/11250/2986538 https://doi.org/10.1080/04353676.2021.1955539 cristin:1995080 Geografiska Annaler: Series A, Physical Geography. 2021, 103 (3), 273-302. Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no Copyright 2021 The Author(s) Geografiska Annaler: Series A, Physical Geography 273-302 103 3 Journal article Peer reviewed 2021 ftunivbergen https://doi.org/10.1080/04353676.2021.1955539 2023-03-14T17:43:32Z Glacier-permafrost interactions are investigated to understand glacial-hydrological influence along a partly glacierised valley on the NE flank of the Snøhetta massif, Dovrefjell, southern Norway. Of particular interest is how processes are controlled by a hydrological connection between landforms. Field mapping identified an ice-marginal landsystem comprising a polythermal glacier, a proglacial lake, an ice-cored moraine complex and a river-lake with perennial frost mounds. A clear interaction between glacial and periglacial processes was observed in transitional landforms, most prominently in the ice-cored moraine which constitutes a permafrost environment that is directly reworked by glaciofluvial processes. The role of this interaction in controlling seasonal, partial drainage of the proglacial lake was assessed using remote sensing-based observations of lake surface size evolution and seasonal surface subsidence. Results suggest a two-fold threshold for lake drainage: Depending on the dynamics of glacial discharge and active layer depth, the ice-cored moraine may either act as a barrier or a pathway to meltwater exiting the glacier. This demonstrates the importance of meltwater dynamics in controlling landform evolution in a glacial-periglacial landscape. To further assess the importance of surface and subsurface hydrology in linking glacial and periglacial domains, water stable oxygen isotope ratios across the study area were studied to map the flow of meltwater from glacier to permafrost. Results include a model of the surface and subsurface hydrology in the catchment and promote a conceptual understanding of water as a thermal, hydraulic and mechanical agent of transient glacier-permafrost interaction operating at heterogeneous timescales. publishedVersion Article in Journal/Newspaper Dovrefjell glacier Ice permafrost University of Bergen: Bergen Open Research Archive (BORA-UiB) Dovrefjell ENVELOPE(13.500,13.500,79.000,79.000) Norway Snøhetta ENVELOPE(-2.783,-2.783,-72.183,-72.183) Geografiska Annaler: Series A, Physical Geography 103 3 273 302 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Glacier-permafrost interactions are investigated to understand glacial-hydrological influence along a partly glacierised valley on the NE flank of the Snøhetta massif, Dovrefjell, southern Norway. Of particular interest is how processes are controlled by a hydrological connection between landforms. Field mapping identified an ice-marginal landsystem comprising a polythermal glacier, a proglacial lake, an ice-cored moraine complex and a river-lake with perennial frost mounds. A clear interaction between glacial and periglacial processes was observed in transitional landforms, most prominently in the ice-cored moraine which constitutes a permafrost environment that is directly reworked by glaciofluvial processes. The role of this interaction in controlling seasonal, partial drainage of the proglacial lake was assessed using remote sensing-based observations of lake surface size evolution and seasonal surface subsidence. Results suggest a two-fold threshold for lake drainage: Depending on the dynamics of glacial discharge and active layer depth, the ice-cored moraine may either act as a barrier or a pathway to meltwater exiting the glacier. This demonstrates the importance of meltwater dynamics in controlling landform evolution in a glacial-periglacial landscape. To further assess the importance of surface and subsurface hydrology in linking glacial and periglacial domains, water stable oxygen isotope ratios across the study area were studied to map the flow of meltwater from glacier to permafrost. Results include a model of the surface and subsurface hydrology in the catchment and promote a conceptual understanding of water as a thermal, hydraulic and mechanical agent of transient glacier-permafrost interaction operating at heterogeneous timescales. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Miesen, Floreana Dahl, Svein Olaf Schrott, Lothar |
spellingShingle |
Miesen, Floreana Dahl, Svein Olaf Schrott, Lothar Evidence of glacier-permafrost interactions associated with hydro-geomorphological processes and landforms at Snøhetta, Dovrefjell, Norway |
author_facet |
Miesen, Floreana Dahl, Svein Olaf Schrott, Lothar |
author_sort |
Miesen, Floreana |
title |
Evidence of glacier-permafrost interactions associated with hydro-geomorphological processes and landforms at Snøhetta, Dovrefjell, Norway |
title_short |
Evidence of glacier-permafrost interactions associated with hydro-geomorphological processes and landforms at Snøhetta, Dovrefjell, Norway |
title_full |
Evidence of glacier-permafrost interactions associated with hydro-geomorphological processes and landforms at Snøhetta, Dovrefjell, Norway |
title_fullStr |
Evidence of glacier-permafrost interactions associated with hydro-geomorphological processes and landforms at Snøhetta, Dovrefjell, Norway |
title_full_unstemmed |
Evidence of glacier-permafrost interactions associated with hydro-geomorphological processes and landforms at Snøhetta, Dovrefjell, Norway |
title_sort |
evidence of glacier-permafrost interactions associated with hydro-geomorphological processes and landforms at snøhetta, dovrefjell, norway |
publisher |
Taylor and Francis |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2986538 https://doi.org/10.1080/04353676.2021.1955539 |
long_lat |
ENVELOPE(13.500,13.500,79.000,79.000) ENVELOPE(-2.783,-2.783,-72.183,-72.183) |
geographic |
Dovrefjell Norway Snøhetta |
geographic_facet |
Dovrefjell Norway Snøhetta |
genre |
Dovrefjell glacier Ice permafrost |
genre_facet |
Dovrefjell glacier Ice permafrost |
op_source |
Geografiska Annaler: Series A, Physical Geography 273-302 103 3 |
op_relation |
urn:issn:0435-3676 https://hdl.handle.net/11250/2986538 https://doi.org/10.1080/04353676.2021.1955539 cristin:1995080 Geografiska Annaler: Series A, Physical Geography. 2021, 103 (3), 273-302. |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1080/04353676.2021.1955539 |
container_title |
Geografiska Annaler: Series A, Physical Geography |
container_volume |
103 |
container_issue |
3 |
container_start_page |
273 |
op_container_end_page |
302 |
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1766397885524475904 |