Holocene palaeohydrological changes in the northern Mediterranean borderlands as reflected by the lake-level record of Lake Ledro, northeastern Italy
International audience A lake-level record of Lake Ledro (northern Italy) spans the entire Holocenewith a chronology derived from51 radiocarbon dates. It is based on a specific sedimentological approach that combines data fromfive sediment profiles sampled in distinct locations in the littoral zone....
Published in: | Quaternary Research |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2012
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Subjects: | |
Online Access: | https://hal.science/hal-00669616 https://hal.science/hal-00669616/document https://hal.science/hal-00669616/file/Magny%20et%20al_%202012_cor.pdf https://doi.org/10.1016/j.yqres.2012.01.005 |
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Université Toulouse 2 - Jean Jaurès: HAL |
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language |
English |
topic |
Mediterranean Lake-level fluctuations Lacustrine sediments Palaeohydrology Holocene Mediterranean Lake-level fluctuations Lacustrine sediments Palaeohydrology Holocene [SHS.ENVIR]Humanities and Social Sciences/Environmental studies |
spellingShingle |
Mediterranean Lake-level fluctuations Lacustrine sediments Palaeohydrology Holocene Mediterranean Lake-level fluctuations Lacustrine sediments Palaeohydrology Holocene [SHS.ENVIR]Humanities and Social Sciences/Environmental studies Magny, Michel Joannin, Sébastien Galop, Didier Vannière, Boris Haas, Jean Nicolas Bassetti, M. Bellintani, Paolo Scandolari, Romana Desmet, Marc Holocene palaeohydrological changes in the northern Mediterranean borderlands as reflected by the lake-level record of Lake Ledro, northeastern Italy |
topic_facet |
Mediterranean Lake-level fluctuations Lacustrine sediments Palaeohydrology Holocene Mediterranean Lake-level fluctuations Lacustrine sediments Palaeohydrology Holocene [SHS.ENVIR]Humanities and Social Sciences/Environmental studies |
description |
International audience A lake-level record of Lake Ledro (northern Italy) spans the entire Holocenewith a chronology derived from51 radiocarbon dates. It is based on a specific sedimentological approach that combines data fromfive sediment profiles sampled in distinct locations in the littoral zone. On a millennial scale, the lake-level record shows two successive periods from 11,700 to 4500 cal yr BP and from 4500 cal yr BP to the present, characterized by lower and higher average lake levels, respectively. In addition to key seasonal and inter-hemispherical changes in insolation, the major hydrological change around 4500 cal yr BP may be related to a non-linear response of the climate system to orbitally-driven gradual decrease in insolation. The Ledro record questions the notion of an accentuated summer rain regime in the northern Mediterranean borderlands during the boreal insolation maximum. Moreover, the Ledro record highlights that the Holocenewas punctuated by successive centennial-scale highstands. Correlations with the Preboreal oscillation and the 8.2 ka event, and comparisonwith the atmospheric 14C residual record, suggest that short-lived lake-level fluctuations developed at Ledro in response to (1) final steps of the deglaciation in the North Atlantic area and (2) variations in solar activity. |
author2 |
Laboratoire Chrono-environnement (UMR 6249) (LCE) Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Maison des Sciences de l'Homme et de l'Environnement Claude Nicolas Ledoux (UAR 3124) (MSHE) Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) Géographie de l'environnement (GEODE) Université Toulouse - Jean Jaurès (UT2J) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS) Universität Innsbruck Innsbruck Universita “La Sapienza” Roma (Istituto CNR) Università degli Studi di Roma "La Sapienza" = Sapienza University Rome (UNIROMA) Soprintendenza per i Beni Archeologici di trento Museo delle Palafitte del Lago di Ledro Musée de Ledro Transferts continentaux : forçages anthropiques, climatiques et géodynamiques Institut des Sciences de la Terre d'Orléans (ISTO) Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS) ANR-05-BLAN-0140,JCLAMA,Méthodes mixtes, visualisation et optimisation(2005) |
format |
Article in Journal/Newspaper |
author |
Magny, Michel Joannin, Sébastien Galop, Didier Vannière, Boris Haas, Jean Nicolas Bassetti, M. Bellintani, Paolo Scandolari, Romana Desmet, Marc |
author_facet |
Magny, Michel Joannin, Sébastien Galop, Didier Vannière, Boris Haas, Jean Nicolas Bassetti, M. Bellintani, Paolo Scandolari, Romana Desmet, Marc |
author_sort |
Magny, Michel |
title |
Holocene palaeohydrological changes in the northern Mediterranean borderlands as reflected by the lake-level record of Lake Ledro, northeastern Italy |
title_short |
Holocene palaeohydrological changes in the northern Mediterranean borderlands as reflected by the lake-level record of Lake Ledro, northeastern Italy |
title_full |
Holocene palaeohydrological changes in the northern Mediterranean borderlands as reflected by the lake-level record of Lake Ledro, northeastern Italy |
title_fullStr |
Holocene palaeohydrological changes in the northern Mediterranean borderlands as reflected by the lake-level record of Lake Ledro, northeastern Italy |
title_full_unstemmed |
Holocene palaeohydrological changes in the northern Mediterranean borderlands as reflected by the lake-level record of Lake Ledro, northeastern Italy |
title_sort |
holocene palaeohydrological changes in the northern mediterranean borderlands as reflected by the lake-level record of lake ledro, northeastern italy |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/hal-00669616 https://hal.science/hal-00669616/document https://hal.science/hal-00669616/file/Magny%20et%20al_%202012_cor.pdf https://doi.org/10.1016/j.yqres.2012.01.005 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0033-5894 EISSN: 1096-0287 Quaternary Research https://hal.science/hal-00669616 Quaternary Research, 2012, 77 (3), pp.382-396. ⟨10.1016/j.yqres.2012.01.005⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.yqres.2012.01.005 hal-00669616 https://hal.science/hal-00669616 https://hal.science/hal-00669616/document https://hal.science/hal-00669616/file/Magny%20et%20al_%202012_cor.pdf doi:10.1016/j.yqres.2012.01.005 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.yqres.2012.01.005 |
container_title |
Quaternary Research |
container_volume |
77 |
container_issue |
3 |
container_start_page |
382 |
op_container_end_page |
396 |
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1799485143478435840 |
spelling |
ftunivtoulouse2:oai:HAL:hal-00669616v1 2024-05-19T07:45:10+00:00 Holocene palaeohydrological changes in the northern Mediterranean borderlands as reflected by the lake-level record of Lake Ledro, northeastern Italy Magny, Michel Joannin, Sébastien Galop, Didier Vannière, Boris Haas, Jean Nicolas Bassetti, M. Bellintani, Paolo Scandolari, Romana Desmet, Marc Laboratoire Chrono-environnement (UMR 6249) (LCE) Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Maison des Sciences de l'Homme et de l'Environnement Claude Nicolas Ledoux (UAR 3124) (MSHE) Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) Géographie de l'environnement (GEODE) Université Toulouse - Jean Jaurès (UT2J) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS) Universität Innsbruck Innsbruck Universita “La Sapienza” Roma (Istituto CNR) Università degli Studi di Roma "La Sapienza" = Sapienza University Rome (UNIROMA) Soprintendenza per i Beni Archeologici di trento Museo delle Palafitte del Lago di Ledro Musée de Ledro Transferts continentaux : forçages anthropiques, climatiques et géodynamiques Institut des Sciences de la Terre d'Orléans (ISTO) Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS) ANR-05-BLAN-0140,JCLAMA,Méthodes mixtes, visualisation et optimisation(2005) 2012 https://hal.science/hal-00669616 https://hal.science/hal-00669616/document https://hal.science/hal-00669616/file/Magny%20et%20al_%202012_cor.pdf https://doi.org/10.1016/j.yqres.2012.01.005 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.yqres.2012.01.005 hal-00669616 https://hal.science/hal-00669616 https://hal.science/hal-00669616/document https://hal.science/hal-00669616/file/Magny%20et%20al_%202012_cor.pdf doi:10.1016/j.yqres.2012.01.005 info:eu-repo/semantics/OpenAccess ISSN: 0033-5894 EISSN: 1096-0287 Quaternary Research https://hal.science/hal-00669616 Quaternary Research, 2012, 77 (3), pp.382-396. ⟨10.1016/j.yqres.2012.01.005⟩ Mediterranean Lake-level fluctuations Lacustrine sediments Palaeohydrology Holocene Mediterranean Lake-level fluctuations Lacustrine sediments Palaeohydrology Holocene [SHS.ENVIR]Humanities and Social Sciences/Environmental studies info:eu-repo/semantics/article Journal articles 2012 ftunivtoulouse2 https://doi.org/10.1016/j.yqres.2012.01.005 2024-04-22T00:22:11Z International audience A lake-level record of Lake Ledro (northern Italy) spans the entire Holocenewith a chronology derived from51 radiocarbon dates. It is based on a specific sedimentological approach that combines data fromfive sediment profiles sampled in distinct locations in the littoral zone. On a millennial scale, the lake-level record shows two successive periods from 11,700 to 4500 cal yr BP and from 4500 cal yr BP to the present, characterized by lower and higher average lake levels, respectively. In addition to key seasonal and inter-hemispherical changes in insolation, the major hydrological change around 4500 cal yr BP may be related to a non-linear response of the climate system to orbitally-driven gradual decrease in insolation. The Ledro record questions the notion of an accentuated summer rain regime in the northern Mediterranean borderlands during the boreal insolation maximum. Moreover, the Ledro record highlights that the Holocenewas punctuated by successive centennial-scale highstands. Correlations with the Preboreal oscillation and the 8.2 ka event, and comparisonwith the atmospheric 14C residual record, suggest that short-lived lake-level fluctuations developed at Ledro in response to (1) final steps of the deglaciation in the North Atlantic area and (2) variations in solar activity. Article in Journal/Newspaper North Atlantic Université Toulouse 2 - Jean Jaurès: HAL Quaternary Research 77 3 382 396 |