Paraglacial coasts responses to glacier retreat and associated shifts in river floodplains over decadal timescales (1966-2016), Kongsfjorden, Svalbard
International audience The aim of this paper is to quantify and map the impact of the post‐Little Ice Age climatechange on the coastal evolution on three glacier catchments in the Kongsfjordenarea in Svalbard. Climatic data at Ny‐Ålesund indicate an increase in the annual meanair temperature of +4 °...
Published in: | Land Degradation & Development |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2018
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Subjects: | |
Online Access: | https://hal.science/hal-01869431 https://doi.org/10.1002/ldr.3149 |
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ftnormandieuniv:oai:HAL:hal-01869431v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Normandie Université: HAL |
op_collection_id |
ftnormandieuniv |
language |
English |
topic |
Arctic coastal geomorphology global change paraglacial Spitsbergen [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Arctic coastal geomorphology global change paraglacial Spitsbergen [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography [SDE.MCG]Environmental Sciences/Global Changes Bourriquen, Marine Mercier, Denis Baltzer, Agnès Fournier, Jérôme Costa, Stéphane Roussel, Erwan Paraglacial coasts responses to glacier retreat and associated shifts in river floodplains over decadal timescales (1966-2016), Kongsfjorden, Svalbard |
topic_facet |
Arctic coastal geomorphology global change paraglacial Spitsbergen [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience The aim of this paper is to quantify and map the impact of the post‐Little Ice Age climatechange on the coastal evolution on three glacier catchments in the Kongsfjordenarea in Svalbard. Climatic data at Ny‐Ålesund indicate an increase in the annual meanair temperature of +4 °C from 1969 to 2016 and an increase in precipitation. On thenorthern coast of the Brøgger Peninsula, the Austre Lovénbreen, Midtre Lovénbreen,and Vestre Lovénbreen glaciers have experienced a net retreat in response to changingmeteorological conditions. Because of this retreat, the glaciers have disclosed alarge area of 7 km2 composed of terrigenous sediments. These sediments aretransported by runoff and created coastal sandur deltas. Channel network behaviorhas been studied using the computation of the active floodplain width by photointerpretation,which decreased in average from 1966 to 2010. This demonstrated a contractionof the active braided belt and a decrease in the number of braided channels.A photointerpretation analysis combined with acquisition of dGPS data during fieldwork shows a mean shoreline progradation of +0.16 m a−1 from 1966 to 2016, witha maximal advance of +82 m seaward. Since 1966, coastal progradation has decreasedin time with higher mean values at the beginning of the studied period and anerosional trend from 1990. The sublittoral area was studied using analog side scansonar in 2009, 2011, 2012, and 2017. Three prodeltas were identified and underwenta huge extension from 2009 to 2017. In the light of this knowledge, our mainconclusion is that, by retreating, glaciers have an impact on the sediment availabilityand on the capacity of the fluvial system to effectively transport sediment to theshoreline. These two factors control the overall coastal evolution by regulating thesediment supply to the coastal area. The coastal zones that were fed with sedimentsby runoff have experienced a coastal progradation, and those that lost this supplyhave undergone a coastal recession. Due to the contraction ... |
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) Université de Nantes (UN) Sorbonne Université (SU) Espaces, Nature et Culture (ENeC) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Muséum national d'Histoire naturelle (MNHN) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG) Normandie Université (NU)-Normandie Université (NU)-Université d'Angers (UA)-École Pratique des Hautes Études (EPHE) Normandie Université (NU) 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 |
Bourriquen, Marine Mercier, Denis Baltzer, Agnès Fournier, Jérôme Costa, Stéphane Roussel, Erwan |
author_facet |
Bourriquen, Marine Mercier, Denis Baltzer, Agnès Fournier, Jérôme Costa, Stéphane Roussel, Erwan |
author_sort |
Bourriquen, Marine |
title |
Paraglacial coasts responses to glacier retreat and associated shifts in river floodplains over decadal timescales (1966-2016), Kongsfjorden, Svalbard |
title_short |
Paraglacial coasts responses to glacier retreat and associated shifts in river floodplains over decadal timescales (1966-2016), Kongsfjorden, Svalbard |
title_full |
Paraglacial coasts responses to glacier retreat and associated shifts in river floodplains over decadal timescales (1966-2016), Kongsfjorden, Svalbard |
title_fullStr |
Paraglacial coasts responses to glacier retreat and associated shifts in river floodplains over decadal timescales (1966-2016), Kongsfjorden, Svalbard |
title_full_unstemmed |
Paraglacial coasts responses to glacier retreat and associated shifts in river floodplains over decadal timescales (1966-2016), Kongsfjorden, Svalbard |
title_sort |
paraglacial coasts responses to glacier retreat and associated shifts in river floodplains over decadal timescales (1966-2016), kongsfjorden, svalbard |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-01869431 https://doi.org/10.1002/ldr.3149 |
geographic |
Arctic Ny-Ålesund Svalbard |
geographic_facet |
Arctic Ny-Ålesund Svalbard |
genre |
Arctic glacier Kongsfjord* Kongsfjorden Ny Ålesund Ny-Ålesund Svalbard Spitsbergen |
genre_facet |
Arctic glacier Kongsfjord* Kongsfjorden Ny Ålesund Ny-Ålesund Svalbard Spitsbergen |
op_source |
ISSN: 1085-3278 EISSN: 1099-145X Land Degradation and Development https://hal.science/hal-01869431 Land Degradation and Development, 2018, 29 (11), pp.4173-4185. ⟨10.1002/ldr.3149⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/ldr.3149 hal-01869431 https://hal.science/hal-01869431 doi:10.1002/ldr.3149 |
op_doi |
https://doi.org/10.1002/ldr.3149 |
container_title |
Land Degradation & Development |
container_volume |
29 |
container_issue |
11 |
container_start_page |
4173 |
op_container_end_page |
4185 |
_version_ |
1796306032563060736 |
spelling |
ftnormandieuniv:oai:HAL:hal-01869431v1 2024-04-14T08:08:36+00:00 Paraglacial coasts responses to glacier retreat and associated shifts in river floodplains over decadal timescales (1966-2016), Kongsfjorden, Svalbard Bourriquen, Marine Mercier, Denis Baltzer, Agnès Fournier, Jérôme Costa, Stéphane Roussel, Erwan 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) Université de Nantes (UN) Sorbonne Université (SU) Espaces, Nature et Culture (ENeC) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Muséum national d'Histoire naturelle (MNHN) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG) Normandie Université (NU)-Normandie Université (NU)-Université d'Angers (UA)-École Pratique des Hautes Études (EPHE) Normandie Université (NU) 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) 2018-09-01 https://hal.science/hal-01869431 https://doi.org/10.1002/ldr.3149 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1002/ldr.3149 hal-01869431 https://hal.science/hal-01869431 doi:10.1002/ldr.3149 ISSN: 1085-3278 EISSN: 1099-145X Land Degradation and Development https://hal.science/hal-01869431 Land Degradation and Development, 2018, 29 (11), pp.4173-4185. ⟨10.1002/ldr.3149⟩ Arctic coastal geomorphology global change paraglacial Spitsbergen [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SHS.GEO]Humanities and Social Sciences/Geography [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2018 ftnormandieuniv https://doi.org/10.1002/ldr.3149 2024-03-21T17:00:55Z International audience The aim of this paper is to quantify and map the impact of the post‐Little Ice Age climatechange on the coastal evolution on three glacier catchments in the Kongsfjordenarea in Svalbard. Climatic data at Ny‐Ålesund indicate an increase in the annual meanair temperature of +4 °C from 1969 to 2016 and an increase in precipitation. On thenorthern coast of the Brøgger Peninsula, the Austre Lovénbreen, Midtre Lovénbreen,and Vestre Lovénbreen glaciers have experienced a net retreat in response to changingmeteorological conditions. Because of this retreat, the glaciers have disclosed alarge area of 7 km2 composed of terrigenous sediments. These sediments aretransported by runoff and created coastal sandur deltas. Channel network behaviorhas been studied using the computation of the active floodplain width by photointerpretation,which decreased in average from 1966 to 2010. This demonstrated a contractionof the active braided belt and a decrease in the number of braided channels.A photointerpretation analysis combined with acquisition of dGPS data during fieldwork shows a mean shoreline progradation of +0.16 m a−1 from 1966 to 2016, witha maximal advance of +82 m seaward. Since 1966, coastal progradation has decreasedin time with higher mean values at the beginning of the studied period and anerosional trend from 1990. The sublittoral area was studied using analog side scansonar in 2009, 2011, 2012, and 2017. Three prodeltas were identified and underwenta huge extension from 2009 to 2017. In the light of this knowledge, our mainconclusion is that, by retreating, glaciers have an impact on the sediment availabilityand on the capacity of the fluvial system to effectively transport sediment to theshoreline. These two factors control the overall coastal evolution by regulating thesediment supply to the coastal area. The coastal zones that were fed with sedimentsby runoff have experienced a coastal progradation, and those that lost this supplyhave undergone a coastal recession. Due to the contraction ... Article in Journal/Newspaper Arctic glacier Kongsfjord* Kongsfjorden Ny Ålesund Ny-Ålesund Svalbard Spitsbergen Normandie Université: HAL Arctic Ny-Ålesund Svalbard Land Degradation & Development 29 11 4173 4185 |