The geomorphological impacts of the deglaciation in the Skagafjörður area (northern Iceland)
Located north of Iceland, the Skagafjörður area has experienced an ice shrinking during the Late Weichselian deglaciation.This period of transition from glacial to non-glacial conditions was characterized by significant impacts on reliefs and slope dynamics. The slope instabilities induced by the de...
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Language: | French |
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ftccsdartic:oai:HAL:tel-01279835v1 2023-05-15T16:49:07+02:00 The geomorphological impacts of the deglaciation in the Skagafjörður area (northern Iceland) Les impacts géomorphologiques de la déglaciation dans la région du Skagafjörður (Islande septentrionale) Coquin, Julien Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes) Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN) Université de Nantes (UN)-Université de Nantes (UN)-Université de Rennes 2 (UR2) Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Brest (UBO)-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)-Centre National de la Recherche Scientifique (CNRS) Université de Nantes Denis MERCIER Olivier BOURGEOIS 2015-10-20 https://tel.archives-ouvertes.fr/tel-01279835 https://tel.archives-ouvertes.fr/tel-01279835/document https://tel.archives-ouvertes.fr/tel-01279835/file/THESE_VF.pdf fr fre HAL CCSD tel-01279835 https://tel.archives-ouvertes.fr/tel-01279835 https://tel.archives-ouvertes.fr/tel-01279835/document https://tel.archives-ouvertes.fr/tel-01279835/file/THESE_VF.pdf info:eu-repo/semantics/OpenAccess https://tel.archives-ouvertes.fr/tel-01279835 Géomorphologie. Université de Nantes, 2015. Français Deglaciation/Slopes/Paraglacial/Gravitational spreading/ Landslides Déglaciation/Versants/Paraglaciaire/Etalements gravitaires/Glissements [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography info:eu-repo/semantics/doctoralThesis Theses 2015 ftccsdartic 2021-12-26T00:11:30Z Located north of Iceland, the Skagafjörður area has experienced an ice shrinking during the Late Weichselian deglaciation.This period of transition from glacial to non-glacial conditions was characterized by significant impacts on reliefs and slope dynamics. The slope instabilities induced by the deglaciation operate in the form of: (i) slope deformations (i.e. gravitational spreading) and (ii) slope failures (i.e. mass-movements). This thesis is devoted to these slope readjustments which occurred in context of deglaciation. Accordingly, the thesis is related to the paraglacial geomorphology which focuses on “non glacial earth surface processes, sediment accumulations, landforms, landsystems and landscapes that are directly conditioned by glaciation and deglaciation” (Ballantyne, 2002). Two major uncertainties remains about: (i) the relationship between slopeinstabilities, both in the form of gravitational spreading and mass-movement, and the sequence of deglaciation, and (ii)the influence of paraglacial slope instabilities in the shaping of the erosional landforms usually attributed to the action ofglacial erosion processes (i.e. cirques and troughs). Main results carried out during this research highlight: (i) asignificant influence of paraglacial gravitational spreading and mass-movement respectively in the carving of troughsand cirques and (ii) a potential influence of gravitational spreading as a precursor of mass-movement, throughoutthe progressive degradation of slope stability induced by the gravitational deformation which may ultimately result inrock-slope failures. Située au nord de l’Islande, la région littorale du Skagafjörður a connu, au cours de la déglaciation du Weichsélien Tardif, une fonte massive des édifices glaciaires. Cette période de déglaciation a eu des impacts importants sur les reliefs et les dynamiques de versant. Les instabilités qui ont affecté les versants au cours de cette séquence s’expriment selon deux modalités principales : (i) les réajustements par déformation (i.e. les ... Doctoral or Postdoctoral Thesis Iceland Islande Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Skagafjörður ENVELOPE(-19.561,-19.561,65.875,65.875) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
French |
topic |
Deglaciation/Slopes/Paraglacial/Gravitational spreading/ Landslides Déglaciation/Versants/Paraglaciaire/Etalements gravitaires/Glissements [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography |
spellingShingle |
Deglaciation/Slopes/Paraglacial/Gravitational spreading/ Landslides Déglaciation/Versants/Paraglaciaire/Etalements gravitaires/Glissements [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography Coquin, Julien The geomorphological impacts of the deglaciation in the Skagafjörður area (northern Iceland) |
topic_facet |
Deglaciation/Slopes/Paraglacial/Gravitational spreading/ Landslides Déglaciation/Versants/Paraglaciaire/Etalements gravitaires/Glissements [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography |
description |
Located north of Iceland, the Skagafjörður area has experienced an ice shrinking during the Late Weichselian deglaciation.This period of transition from glacial to non-glacial conditions was characterized by significant impacts on reliefs and slope dynamics. The slope instabilities induced by the deglaciation operate in the form of: (i) slope deformations (i.e. gravitational spreading) and (ii) slope failures (i.e. mass-movements). This thesis is devoted to these slope readjustments which occurred in context of deglaciation. Accordingly, the thesis is related to the paraglacial geomorphology which focuses on “non glacial earth surface processes, sediment accumulations, landforms, landsystems and landscapes that are directly conditioned by glaciation and deglaciation” (Ballantyne, 2002). Two major uncertainties remains about: (i) the relationship between slopeinstabilities, both in the form of gravitational spreading and mass-movement, and the sequence of deglaciation, and (ii)the influence of paraglacial slope instabilities in the shaping of the erosional landforms usually attributed to the action ofglacial erosion processes (i.e. cirques and troughs). Main results carried out during this research highlight: (i) asignificant influence of paraglacial gravitational spreading and mass-movement respectively in the carving of troughsand cirques and (ii) a potential influence of gravitational spreading as a precursor of mass-movement, throughoutthe progressive degradation of slope stability induced by the gravitational deformation which may ultimately result inrock-slope failures. Située au nord de l’Islande, la région littorale du Skagafjörður a connu, au cours de la déglaciation du Weichsélien Tardif, une fonte massive des édifices glaciaires. Cette période de déglaciation a eu des impacts importants sur les reliefs et les dynamiques de versant. Les instabilités qui ont affecté les versants au cours de cette séquence s’expriment selon deux modalités principales : (i) les réajustements par déformation (i.e. les ... |
author2 |
Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes) Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN) Université de Nantes (UN)-Université de Nantes (UN)-Université de Rennes 2 (UR2) Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Brest (UBO)-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)-Centre National de la Recherche Scientifique (CNRS) Université de Nantes Denis MERCIER Olivier BOURGEOIS |
format |
Doctoral or Postdoctoral Thesis |
author |
Coquin, Julien |
author_facet |
Coquin, Julien |
author_sort |
Coquin, Julien |
title |
The geomorphological impacts of the deglaciation in the Skagafjörður area (northern Iceland) |
title_short |
The geomorphological impacts of the deglaciation in the Skagafjörður area (northern Iceland) |
title_full |
The geomorphological impacts of the deglaciation in the Skagafjörður area (northern Iceland) |
title_fullStr |
The geomorphological impacts of the deglaciation in the Skagafjörður area (northern Iceland) |
title_full_unstemmed |
The geomorphological impacts of the deglaciation in the Skagafjörður area (northern Iceland) |
title_sort |
geomorphological impacts of the deglaciation in the skagafjörður area (northern iceland) |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://tel.archives-ouvertes.fr/tel-01279835 https://tel.archives-ouvertes.fr/tel-01279835/document https://tel.archives-ouvertes.fr/tel-01279835/file/THESE_VF.pdf |
long_lat |
ENVELOPE(-19.561,-19.561,65.875,65.875) |
geographic |
Skagafjörður |
geographic_facet |
Skagafjörður |
genre |
Iceland Islande |
genre_facet |
Iceland Islande |
op_source |
https://tel.archives-ouvertes.fr/tel-01279835 Géomorphologie. Université de Nantes, 2015. Français |
op_relation |
tel-01279835 https://tel.archives-ouvertes.fr/tel-01279835 https://tel.archives-ouvertes.fr/tel-01279835/document https://tel.archives-ouvertes.fr/tel-01279835/file/THESE_VF.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766039195292270592 |