Reconstructing past hydrology of eastern Canadian boreal catchments using clastic varved sediments and hydro-climatic modelling: 160 years of fluvial inflows
International audience Analysis of short sediment cores collected in Grand Lake, Labrador, revealed that this lake is an excellent candidate for the preservation of a laminated sediment record. The great depth of Grand Lake, the availability of fine sediments along its tributaries and its important...
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Online Access: | https://hal.science/hal-03181080 https://hal.science/hal-03181080/document https://hal.science/hal-03181080/file/cp-17-653-2021.pdf https://doi.org/10.5194/cp-17-653-2021 |
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ftunivcotedazur:oai:HAL:hal-03181080v1 2023-10-09T21:53:16+02:00 Reconstructing past hydrology of eastern Canadian boreal catchments using clastic varved sediments and hydro-climatic modelling: 160 years of fluvial inflows Gagnon-Poiré, Antoine Brigode, Pierre Francus, Pierre Fortin, David Lajeunesse, Patrick Dorion, Hugues Trottier, Annie-Pier Géoazur (GEOAZUR 7329) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) 2021 https://hal.science/hal-03181080 https://hal.science/hal-03181080/document https://hal.science/hal-03181080/file/cp-17-653-2021.pdf https://doi.org/10.5194/cp-17-653-2021 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-17-653-2021 hal-03181080 https://hal.science/hal-03181080 https://hal.science/hal-03181080/document https://hal.science/hal-03181080/file/cp-17-653-2021.pdf doi:10.5194/cp-17-653-2021 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-03181080 Climate of the Past, 2021, 17 (2), pp.653-673. ⟨10.5194/cp-17-653-2021⟩ https://cp.copernicus.org/articles/17/653/2021/ [SDE.MCG]Environmental Sciences/Global Changes [SDE.IE]Environmental Sciences/Environmental Engineering [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology info:eu-repo/semantics/article Journal articles 2021 ftunivcotedazur https://doi.org/10.5194/cp-17-653-2021 2023-09-12T23:15:22Z International audience Analysis of short sediment cores collected in Grand Lake, Labrador, revealed that this lake is an excellent candidate for the preservation of a laminated sediment record. The great depth of Grand Lake, the availability of fine sediments along its tributaries and its important seasonal river inflow have favoured the formation of a 160-year-long clastic varved sequence. Each varve represents 1 hydrological year. Varve formation is mainly related to spring discharge conditions with contributions from summer and autumn rainfall events. The statistically significant relation between varve parameters and the Naskaupi River discharge observations provided the opportunity to develop local hydrological reconstructions beyond the instrumental period. The combined detrital layer thickness and the particle size (99th percentile) series extracted from each varve yield the strongest correlations with instrumental data (r=0.68 and 0.75 respectively) and have been used to reconstruct the respective Naskaupi River mean and maximum annual discharges over the 1856–2016 period. The reconstructed Q-mean series suggest that high Q-mean years occurred during the 1920–1960 period, and a slight decrease in Q-mean took place during the second half of the 20th century. Independent reconstructions based on rainfall–runoff modelling of the watershed from historical reanalysis of global geopotential height fields display a significant correlation with the reconstructed Naskaupi River discharge based on varve physical parameters. The Grand Lake varved sequence contains a regional hydrological signal, as suggested by the statistically significant relation between the combined detrital layer thickness series and the observed Labrador region Q-mean series extracted from five watersheds of different sizes. Article in Journal/Newspaper Labrador region HAL Université Côte d'Azur Climate of the Past 17 2 653 673 |
institution |
Open Polar |
collection |
HAL Université Côte d'Azur |
op_collection_id |
ftunivcotedazur |
language |
English |
topic |
[SDE.MCG]Environmental Sciences/Global Changes [SDE.IE]Environmental Sciences/Environmental Engineering [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
spellingShingle |
[SDE.MCG]Environmental Sciences/Global Changes [SDE.IE]Environmental Sciences/Environmental Engineering [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology Gagnon-Poiré, Antoine Brigode, Pierre Francus, Pierre Fortin, David Lajeunesse, Patrick Dorion, Hugues Trottier, Annie-Pier Reconstructing past hydrology of eastern Canadian boreal catchments using clastic varved sediments and hydro-climatic modelling: 160 years of fluvial inflows |
topic_facet |
[SDE.MCG]Environmental Sciences/Global Changes [SDE.IE]Environmental Sciences/Environmental Engineering [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
description |
International audience Analysis of short sediment cores collected in Grand Lake, Labrador, revealed that this lake is an excellent candidate for the preservation of a laminated sediment record. The great depth of Grand Lake, the availability of fine sediments along its tributaries and its important seasonal river inflow have favoured the formation of a 160-year-long clastic varved sequence. Each varve represents 1 hydrological year. Varve formation is mainly related to spring discharge conditions with contributions from summer and autumn rainfall events. The statistically significant relation between varve parameters and the Naskaupi River discharge observations provided the opportunity to develop local hydrological reconstructions beyond the instrumental period. The combined detrital layer thickness and the particle size (99th percentile) series extracted from each varve yield the strongest correlations with instrumental data (r=0.68 and 0.75 respectively) and have been used to reconstruct the respective Naskaupi River mean and maximum annual discharges over the 1856–2016 period. The reconstructed Q-mean series suggest that high Q-mean years occurred during the 1920–1960 period, and a slight decrease in Q-mean took place during the second half of the 20th century. Independent reconstructions based on rainfall–runoff modelling of the watershed from historical reanalysis of global geopotential height fields display a significant correlation with the reconstructed Naskaupi River discharge based on varve physical parameters. The Grand Lake varved sequence contains a regional hydrological signal, as suggested by the statistically significant relation between the combined detrital layer thickness series and the observed Labrador region Q-mean series extracted from five watersheds of different sizes. |
author2 |
Géoazur (GEOAZUR 7329) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud ) |
format |
Article in Journal/Newspaper |
author |
Gagnon-Poiré, Antoine Brigode, Pierre Francus, Pierre Fortin, David Lajeunesse, Patrick Dorion, Hugues Trottier, Annie-Pier |
author_facet |
Gagnon-Poiré, Antoine Brigode, Pierre Francus, Pierre Fortin, David Lajeunesse, Patrick Dorion, Hugues Trottier, Annie-Pier |
author_sort |
Gagnon-Poiré, Antoine |
title |
Reconstructing past hydrology of eastern Canadian boreal catchments using clastic varved sediments and hydro-climatic modelling: 160 years of fluvial inflows |
title_short |
Reconstructing past hydrology of eastern Canadian boreal catchments using clastic varved sediments and hydro-climatic modelling: 160 years of fluvial inflows |
title_full |
Reconstructing past hydrology of eastern Canadian boreal catchments using clastic varved sediments and hydro-climatic modelling: 160 years of fluvial inflows |
title_fullStr |
Reconstructing past hydrology of eastern Canadian boreal catchments using clastic varved sediments and hydro-climatic modelling: 160 years of fluvial inflows |
title_full_unstemmed |
Reconstructing past hydrology of eastern Canadian boreal catchments using clastic varved sediments and hydro-climatic modelling: 160 years of fluvial inflows |
title_sort |
reconstructing past hydrology of eastern canadian boreal catchments using clastic varved sediments and hydro-climatic modelling: 160 years of fluvial inflows |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03181080 https://hal.science/hal-03181080/document https://hal.science/hal-03181080/file/cp-17-653-2021.pdf https://doi.org/10.5194/cp-17-653-2021 |
genre |
Labrador region |
genre_facet |
Labrador region |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.science/hal-03181080 Climate of the Past, 2021, 17 (2), pp.653-673. ⟨10.5194/cp-17-653-2021⟩ https://cp.copernicus.org/articles/17/653/2021/ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-17-653-2021 hal-03181080 https://hal.science/hal-03181080 https://hal.science/hal-03181080/document https://hal.science/hal-03181080/file/cp-17-653-2021.pdf doi:10.5194/cp-17-653-2021 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-17-653-2021 |
container_title |
Climate of the Past |
container_volume |
17 |
container_issue |
2 |
container_start_page |
653 |
op_container_end_page |
673 |
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1779316523063574528 |