Processes controlling the development of talus slopes in SW Spitsbergen: The role of deglaciation and periglacial conditions
Abstract The location of Svalbard at the interface between the warm Atlantic and cold Arctic oceans causes the terrestrial environment to be highly sensitive to contemporary climate warming. Talus slopes provide a component of glaciated areas that has been registering these changes on a scale of sev...
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crwiley:10.1002/ldr.3716 2024-06-02T08:02:30+00:00 Processes controlling the development of talus slopes in SW Spitsbergen: The role of deglaciation and periglacial conditions Senderak, Krzysztof Kondracka, Marta Gądek, Bogdan 2020 http://dx.doi.org/10.1002/ldr.3716 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ldr.3716 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ldr.3716 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Land Degradation & Development volume 32, issue 1, page 208-223 ISSN 1085-3278 1099-145X journal-article 2020 crwiley https://doi.org/10.1002/ldr.3716 2024-05-03T12:06:56Z Abstract The location of Svalbard at the interface between the warm Atlantic and cold Arctic oceans causes the terrestrial environment to be highly sensitive to contemporary climate warming. Talus slopes provide a component of glaciated areas that has been registering these changes on a scale of several thousand years. However, knowledge about their development during glacial recession is still limited. This paper fills this gap by providing unique data obtained by geophysical methods: electrical resistivity tomography (ERT) and ground‐penetrating radar (GPR), regarding the talus slopes in Revdalen (SW Spitsbergen), which was last glaciated in the Neoglacial period. The results indicate that the thickness of talus slopes depends first of all on the size of the sediment supply area and only secondarily on the stage of development. The initial content of buried glacial ice in the talus deposits is differential and depends on both the rate of deglaciation and the local intensity of rock wall denudation. Over time, as a result of creep, the presence of massive ice is limited to ever lower parts of the slope. Above, there is aggradation of pore ice in delivered debris material. At the end of this stage, the buried glacial ice can form, or co‐create together with pore ice, the core of subslope rock glaciers. The relatively long period since the beginning of the Revdalen deglaciation allowed a general model of the development of talus slopes in the polar environment to be prepared. Article in Journal/Newspaper Arctic Svalbard Spitsbergen Wiley Online Library Arctic Svalbard Land Degradation & Development 32 1 208 223 |
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Wiley Online Library |
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English |
description |
Abstract The location of Svalbard at the interface between the warm Atlantic and cold Arctic oceans causes the terrestrial environment to be highly sensitive to contemporary climate warming. Talus slopes provide a component of glaciated areas that has been registering these changes on a scale of several thousand years. However, knowledge about their development during glacial recession is still limited. This paper fills this gap by providing unique data obtained by geophysical methods: electrical resistivity tomography (ERT) and ground‐penetrating radar (GPR), regarding the talus slopes in Revdalen (SW Spitsbergen), which was last glaciated in the Neoglacial period. The results indicate that the thickness of talus slopes depends first of all on the size of the sediment supply area and only secondarily on the stage of development. The initial content of buried glacial ice in the talus deposits is differential and depends on both the rate of deglaciation and the local intensity of rock wall denudation. Over time, as a result of creep, the presence of massive ice is limited to ever lower parts of the slope. Above, there is aggradation of pore ice in delivered debris material. At the end of this stage, the buried glacial ice can form, or co‐create together with pore ice, the core of subslope rock glaciers. The relatively long period since the beginning of the Revdalen deglaciation allowed a general model of the development of talus slopes in the polar environment to be prepared. |
format |
Article in Journal/Newspaper |
author |
Senderak, Krzysztof Kondracka, Marta Gądek, Bogdan |
spellingShingle |
Senderak, Krzysztof Kondracka, Marta Gądek, Bogdan Processes controlling the development of talus slopes in SW Spitsbergen: The role of deglaciation and periglacial conditions |
author_facet |
Senderak, Krzysztof Kondracka, Marta Gądek, Bogdan |
author_sort |
Senderak, Krzysztof |
title |
Processes controlling the development of talus slopes in SW Spitsbergen: The role of deglaciation and periglacial conditions |
title_short |
Processes controlling the development of talus slopes in SW Spitsbergen: The role of deglaciation and periglacial conditions |
title_full |
Processes controlling the development of talus slopes in SW Spitsbergen: The role of deglaciation and periglacial conditions |
title_fullStr |
Processes controlling the development of talus slopes in SW Spitsbergen: The role of deglaciation and periglacial conditions |
title_full_unstemmed |
Processes controlling the development of talus slopes in SW Spitsbergen: The role of deglaciation and periglacial conditions |
title_sort |
processes controlling the development of talus slopes in sw spitsbergen: the role of deglaciation and periglacial conditions |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/ldr.3716 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ldr.3716 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ldr.3716 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Svalbard Spitsbergen |
genre_facet |
Arctic Svalbard Spitsbergen |
op_source |
Land Degradation & Development volume 32, issue 1, page 208-223 ISSN 1085-3278 1099-145X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ldr.3716 |
container_title |
Land Degradation & Development |
container_volume |
32 |
container_issue |
1 |
container_start_page |
208 |
op_container_end_page |
223 |
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1800746983302889472 |