The role of topography in landform development at an active temperate glacier in Arctic Norway
Abstract Topography exerts a strong control on how glaciers respond to changes in climate. Increased understanding of this role is important for both refining model predictions of future rates of glacier recession and for reconstructing climatic change from the glacial geological record. In this pap...
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crwiley:10.1002/esp.5588 2024-09-15T18:07:53+00:00 The role of topography in landform development at an active temperate glacier in Arctic Norway Boston, Clare M. Chandler, Benjamin M. P. Lovell, Harold Weber, Paul Davies, Bethan J. British Society for Geomorphology University of Portsmouth 2023 http://dx.doi.org/10.1002/esp.5588 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.5588 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Earth Surface Processes and Landforms volume 48, issue 9, page 1783-1803 ISSN 0197-9337 1096-9837 journal-article 2023 crwiley https://doi.org/10.1002/esp.5588 2024-07-04T04:28:26Z Abstract Topography exerts a strong control on how glaciers respond to changes in climate. Increased understanding of this role is important for both refining model predictions of future rates of glacier recession and for reconstructing climatic change from the glacial geological record. In this paper, we examine the geomorphological and sedimentological evidence in the foreland of Fingerbreen, a temperate outlet of the plateau icefield Østre Svartisen. The aim is to investigate the relationship between processes of landform generation and the changing influence of topography as recession progressed. The Fingerbreen foreland is dominated by bouldery Little Ice Age moraines and extensive areas of striated bedrock. A heavily fluted zone occurs in the central part of the foreland that is cross‐cut by annual transverse and sawtooth moraines. Systematic investigations of the structural architecture of moraines at various locations in the foreland provide evidence for a range of moraine‐forming processes, which can be linked to the topographic setting (e.g. deposition on a reverse bedrock slope) and drainage conditions. This includes push and bulldozing of proglacial sediments and squeezing of sub‐glacial sediments and submarginal freeze‐on of sediment slabs. We also identify variations in moraine spacing as a result of topography. This research demonstrates the importance of topography when interpreting moraine records in the context of climate and glacier dynamics. Article in Journal/Newspaper glacier Svartisen Wiley Online Library Earth Surface Processes and Landforms 48 9 1783 1803 |
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English |
description |
Abstract Topography exerts a strong control on how glaciers respond to changes in climate. Increased understanding of this role is important for both refining model predictions of future rates of glacier recession and for reconstructing climatic change from the glacial geological record. In this paper, we examine the geomorphological and sedimentological evidence in the foreland of Fingerbreen, a temperate outlet of the plateau icefield Østre Svartisen. The aim is to investigate the relationship between processes of landform generation and the changing influence of topography as recession progressed. The Fingerbreen foreland is dominated by bouldery Little Ice Age moraines and extensive areas of striated bedrock. A heavily fluted zone occurs in the central part of the foreland that is cross‐cut by annual transverse and sawtooth moraines. Systematic investigations of the structural architecture of moraines at various locations in the foreland provide evidence for a range of moraine‐forming processes, which can be linked to the topographic setting (e.g. deposition on a reverse bedrock slope) and drainage conditions. This includes push and bulldozing of proglacial sediments and squeezing of sub‐glacial sediments and submarginal freeze‐on of sediment slabs. We also identify variations in moraine spacing as a result of topography. This research demonstrates the importance of topography when interpreting moraine records in the context of climate and glacier dynamics. |
author2 |
British Society for Geomorphology University of Portsmouth |
format |
Article in Journal/Newspaper |
author |
Boston, Clare M. Chandler, Benjamin M. P. Lovell, Harold Weber, Paul Davies, Bethan J. |
spellingShingle |
Boston, Clare M. Chandler, Benjamin M. P. Lovell, Harold Weber, Paul Davies, Bethan J. The role of topography in landform development at an active temperate glacier in Arctic Norway |
author_facet |
Boston, Clare M. Chandler, Benjamin M. P. Lovell, Harold Weber, Paul Davies, Bethan J. |
author_sort |
Boston, Clare M. |
title |
The role of topography in landform development at an active temperate glacier in Arctic Norway |
title_short |
The role of topography in landform development at an active temperate glacier in Arctic Norway |
title_full |
The role of topography in landform development at an active temperate glacier in Arctic Norway |
title_fullStr |
The role of topography in landform development at an active temperate glacier in Arctic Norway |
title_full_unstemmed |
The role of topography in landform development at an active temperate glacier in Arctic Norway |
title_sort |
role of topography in landform development at an active temperate glacier in arctic norway |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/esp.5588 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.5588 |
genre |
glacier Svartisen |
genre_facet |
glacier Svartisen |
op_source |
Earth Surface Processes and Landforms volume 48, issue 9, page 1783-1803 ISSN 0197-9337 1096-9837 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/esp.5588 |
container_title |
Earth Surface Processes and Landforms |
container_volume |
48 |
container_issue |
9 |
container_start_page |
1783 |
op_container_end_page |
1803 |
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1810445235946258432 |