Paraglacial gullying of sediment-mantled slopes: a case study of Colletthøgda, Kongsfjorden area, West Spitsbergen (Svalbard)
International audience This paper evaluates the paraglacial evolution of a sediment-mantled slope in a polar maritime environment. The intensity of paraglacial processes is estimated through quantifi cation of erosion and dating of fi eld sectors with the help of photographic archives. Gully erosion...
Published in: | Earth Surface Processes and Landforms |
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ftecolephe:oai:HAL:hal-00435571v1 2024-05-19T07:40:49+00:00 Paraglacial gullying of sediment-mantled slopes: a case study of Colletthøgda, Kongsfjorden area, West Spitsbergen (Svalbard) Mercier, Denis Etienne, Samuel Sellier, Dominique André, Marie-Françoise Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN) Université de Nantes (UN)-Université de Nantes (UN) Laboratoire de Géographie Physique et Environnementale (GEOLAB) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM) Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA) 2009 https://hal.science/hal-00435571 https://doi.org/10.1002/esp.1862 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1002/esp.1862 hal-00435571 https://hal.science/hal-00435571 doi:10.1002/esp.1862 ISSN: 0197-9337 EISSN: 1096-9837 Earth Surface Processes and Landforms https://hal.science/hal-00435571 Earth Surface Processes and Landforms, 2009, 34, pp.1772-1789. ⟨10.1002/esp.1862⟩ paraglacial geomorphology timescale slope processes glacial environment Spitsbergen [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology info:eu-repo/semantics/article Journal articles 2009 ftecolephe https://doi.org/10.1002/esp.1862 2024-04-25T01:01:09Z International audience This paper evaluates the paraglacial evolution of a sediment-mantled slope in a polar maritime environment. The intensity of paraglacial processes is estimated through quantifi cation of erosion and dating of fi eld sectors with the help of photographic archives. Gully erosion has been estimated using morphometric parameters and by surveys of vegetation cover. The rapid melting of dead-ice cores controls gully formation. This leads to slope form modifi cation: gully profi le gradients are reduced from a mean of 35° to a mean ranging between 10° and 15°. Profi le evolution results from the collapse of glacier lateral moraine. All data (mean slope angle of individual gullies, frequency distribution of slope angles, fractional distance to the apex, gullying index, volume of debris mobilized, vertical erosion rate) tend to increase with increasing deglaciation age and the duration of paraglacial activity. Vegetation colonization is a response to stabilization of the ground surface and the drying up of the ground surface due to dead-ice melting. The full sequence of paraglacial slope adjustment (gully incision-stabilization) may occur rapidly at the study site, i.e. within two decades. Finally, a lateral morphogenic sequence is proposed showing the importance of paraglacial processes at the onset of the deglaciation. Article in Journal/Newspaper glacier Kongsfjord* Kongsfjorden Svalbard Spitsbergen EPHE (Ecole pratique des hautes études, Paris): HAL Earth Surface Processes and Landforms 34 13 1772 1789 |
institution |
Open Polar |
collection |
EPHE (Ecole pratique des hautes études, Paris): HAL |
op_collection_id |
ftecolephe |
language |
English |
topic |
paraglacial geomorphology timescale slope processes glacial environment Spitsbergen [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology |
spellingShingle |
paraglacial geomorphology timescale slope processes glacial environment Spitsbergen [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology Mercier, Denis Etienne, Samuel Sellier, Dominique André, Marie-Françoise Paraglacial gullying of sediment-mantled slopes: a case study of Colletthøgda, Kongsfjorden area, West Spitsbergen (Svalbard) |
topic_facet |
paraglacial geomorphology timescale slope processes glacial environment Spitsbergen [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology |
description |
International audience This paper evaluates the paraglacial evolution of a sediment-mantled slope in a polar maritime environment. The intensity of paraglacial processes is estimated through quantifi cation of erosion and dating of fi eld sectors with the help of photographic archives. Gully erosion has been estimated using morphometric parameters and by surveys of vegetation cover. The rapid melting of dead-ice cores controls gully formation. This leads to slope form modifi cation: gully profi le gradients are reduced from a mean of 35° to a mean ranging between 10° and 15°. Profi le evolution results from the collapse of glacier lateral moraine. All data (mean slope angle of individual gullies, frequency distribution of slope angles, fractional distance to the apex, gullying index, volume of debris mobilized, vertical erosion rate) tend to increase with increasing deglaciation age and the duration of paraglacial activity. Vegetation colonization is a response to stabilization of the ground surface and the drying up of the ground surface due to dead-ice melting. The full sequence of paraglacial slope adjustment (gully incision-stabilization) may occur rapidly at the study site, i.e. within two decades. Finally, a lateral morphogenic sequence is proposed showing the importance of paraglacial processes at the onset of the deglaciation. |
author2 |
Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN) Université de Nantes (UN)-Université de Nantes (UN) Laboratoire de Géographie Physique et Environnementale (GEOLAB) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM) Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA) |
format |
Article in Journal/Newspaper |
author |
Mercier, Denis Etienne, Samuel Sellier, Dominique André, Marie-Françoise |
author_facet |
Mercier, Denis Etienne, Samuel Sellier, Dominique André, Marie-Françoise |
author_sort |
Mercier, Denis |
title |
Paraglacial gullying of sediment-mantled slopes: a case study of Colletthøgda, Kongsfjorden area, West Spitsbergen (Svalbard) |
title_short |
Paraglacial gullying of sediment-mantled slopes: a case study of Colletthøgda, Kongsfjorden area, West Spitsbergen (Svalbard) |
title_full |
Paraglacial gullying of sediment-mantled slopes: a case study of Colletthøgda, Kongsfjorden area, West Spitsbergen (Svalbard) |
title_fullStr |
Paraglacial gullying of sediment-mantled slopes: a case study of Colletthøgda, Kongsfjorden area, West Spitsbergen (Svalbard) |
title_full_unstemmed |
Paraglacial gullying of sediment-mantled slopes: a case study of Colletthøgda, Kongsfjorden area, West Spitsbergen (Svalbard) |
title_sort |
paraglacial gullying of sediment-mantled slopes: a case study of colletthøgda, kongsfjorden area, west spitsbergen (svalbard) |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-00435571 https://doi.org/10.1002/esp.1862 |
genre |
glacier Kongsfjord* Kongsfjorden Svalbard Spitsbergen |
genre_facet |
glacier Kongsfjord* Kongsfjorden Svalbard Spitsbergen |
op_source |
ISSN: 0197-9337 EISSN: 1096-9837 Earth Surface Processes and Landforms https://hal.science/hal-00435571 Earth Surface Processes and Landforms, 2009, 34, pp.1772-1789. ⟨10.1002/esp.1862⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/esp.1862 hal-00435571 https://hal.science/hal-00435571 doi:10.1002/esp.1862 |
op_doi |
https://doi.org/10.1002/esp.1862 |
container_title |
Earth Surface Processes and Landforms |
container_volume |
34 |
container_issue |
13 |
container_start_page |
1772 |
op_container_end_page |
1789 |
_version_ |
1799480400399040512 |