The role of dead ice in transforming glacier forelands under the rapid climate warming of recent decades, Oscar II Land, Svalbard
Abstract The rapid climate changes of recent decades are causing rapid glacier recession in the high Arctic and the loss of large patches and blocks of dead ice. Their temporally differentiated melting is very significantly transforming the relief of marginal zones, creating dead‐ice landscapes. The...
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Online Access: | http://dx.doi.org/10.1002/ldr.4780 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ldr.4780 |
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crwiley:10.1002/ldr.4780 2024-09-15T18:07:56+00:00 The role of dead ice in transforming glacier forelands under the rapid climate warming of recent decades, Oscar II Land, Svalbard Błaszkiewicz, Mirosław Andrzejewski, Leon Dudek, Justyna Sobota, Ireneusz Czarnecki, Kamil Narodowe Centrum Nauki 2023 http://dx.doi.org/10.1002/ldr.4780 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ldr.4780 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Land Degradation & Development volume 34, issue 14, page 4328-4345 ISSN 1085-3278 1099-145X journal-article 2023 crwiley https://doi.org/10.1002/ldr.4780 2024-08-22T04:18:22Z Abstract The rapid climate changes of recent decades are causing rapid glacier recession in the high Arctic and the loss of large patches and blocks of dead ice. Their temporally differentiated melting is very significantly transforming the relief of marginal zones, creating dead‐ice landscapes. The article focuses on dead‐ice degradation processes in the forelands of two glaciers (Erikkabreen and Haakenbreen) on Oscar II Land in Spitsbergen. Detailed in‐field geomorphological mappings have been conducted twice (in 1989 and 2022) in the two glaciers' forelands. These were combined with analysis of available photogrammetry and Digital Elevation Models, allowing the authors to describe the dynamics of dead‐ice melting processes within various landforms and the effect of those processes on the forms' ultimate morphology. This provided a broad view of the trajectory of melt processes depending on local geomorphological and hydrological conditions. Particular attention was paid to the interactions between the evolution of permafrost and the course of melting of dead ice. In light of the highly dynamic thermokarst processes in the forelands of Svalbard glaciers, the term ‘dead‐ice‐rich permafrost’ is proposed. It was found that global climate changes are increasing the role of dead ice in transforming the relief of glacier forelands, thereby increasing the occurrence of dead‐ice landscapes. The conclusions confirmed those for other contemporary glaciation areas and may significantly help in interpreting the morphogenesis of glacial relief formed during past continental glaciations. Article in Journal/Newspaper glacier Ice Oscar II Land permafrost Svalbard Thermokarst Spitsbergen Wiley Online Library Land Degradation & Development 34 14 4328 4345 |
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Open Polar |
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Wiley Online Library |
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English |
description |
Abstract The rapid climate changes of recent decades are causing rapid glacier recession in the high Arctic and the loss of large patches and blocks of dead ice. Their temporally differentiated melting is very significantly transforming the relief of marginal zones, creating dead‐ice landscapes. The article focuses on dead‐ice degradation processes in the forelands of two glaciers (Erikkabreen and Haakenbreen) on Oscar II Land in Spitsbergen. Detailed in‐field geomorphological mappings have been conducted twice (in 1989 and 2022) in the two glaciers' forelands. These were combined with analysis of available photogrammetry and Digital Elevation Models, allowing the authors to describe the dynamics of dead‐ice melting processes within various landforms and the effect of those processes on the forms' ultimate morphology. This provided a broad view of the trajectory of melt processes depending on local geomorphological and hydrological conditions. Particular attention was paid to the interactions between the evolution of permafrost and the course of melting of dead ice. In light of the highly dynamic thermokarst processes in the forelands of Svalbard glaciers, the term ‘dead‐ice‐rich permafrost’ is proposed. It was found that global climate changes are increasing the role of dead ice in transforming the relief of glacier forelands, thereby increasing the occurrence of dead‐ice landscapes. The conclusions confirmed those for other contemporary glaciation areas and may significantly help in interpreting the morphogenesis of glacial relief formed during past continental glaciations. |
author2 |
Narodowe Centrum Nauki |
format |
Article in Journal/Newspaper |
author |
Błaszkiewicz, Mirosław Andrzejewski, Leon Dudek, Justyna Sobota, Ireneusz Czarnecki, Kamil |
spellingShingle |
Błaszkiewicz, Mirosław Andrzejewski, Leon Dudek, Justyna Sobota, Ireneusz Czarnecki, Kamil The role of dead ice in transforming glacier forelands under the rapid climate warming of recent decades, Oscar II Land, Svalbard |
author_facet |
Błaszkiewicz, Mirosław Andrzejewski, Leon Dudek, Justyna Sobota, Ireneusz Czarnecki, Kamil |
author_sort |
Błaszkiewicz, Mirosław |
title |
The role of dead ice in transforming glacier forelands under the rapid climate warming of recent decades, Oscar II Land, Svalbard |
title_short |
The role of dead ice in transforming glacier forelands under the rapid climate warming of recent decades, Oscar II Land, Svalbard |
title_full |
The role of dead ice in transforming glacier forelands under the rapid climate warming of recent decades, Oscar II Land, Svalbard |
title_fullStr |
The role of dead ice in transforming glacier forelands under the rapid climate warming of recent decades, Oscar II Land, Svalbard |
title_full_unstemmed |
The role of dead ice in transforming glacier forelands under the rapid climate warming of recent decades, Oscar II Land, Svalbard |
title_sort |
role of dead ice in transforming glacier forelands under the rapid climate warming of recent decades, oscar ii land, svalbard |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/ldr.4780 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ldr.4780 |
genre |
glacier Ice Oscar II Land permafrost Svalbard Thermokarst Spitsbergen |
genre_facet |
glacier Ice Oscar II Land permafrost Svalbard Thermokarst Spitsbergen |
op_source |
Land Degradation & Development volume 34, issue 14, page 4328-4345 ISSN 1085-3278 1099-145X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ldr.4780 |
container_title |
Land Degradation & Development |
container_volume |
34 |
container_issue |
14 |
container_start_page |
4328 |
op_container_end_page |
4345 |
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1810445301312389120 |