Holocene palaeohydrological changes in the northern Mediterranean borderlands as reflected by the lake-level record of lake ledro, northeastern Italy
A lake-level record of Lake Ledro (northern Italy) spans the entire Holocene with a chronology derived from 51 radiocarbon dates. It is based on a specific sedimentological approach that combines data from five sediment profiles sampled in distinct locations in the littoral zone. On a millennial sca...
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crcambridgeupr:10.1016/j.yqres.2012.01.005 2024-06-16T07:41:52+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, Michele Bellintani, Paolo Scandolari, Romana Desmet, Marc 2012 http://dx.doi.org/10.1016/j.yqres.2012.01.005 http://api.elsevier.com/content/article/PII:S0033589412000063?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589412000063?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400004051 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 77, issue 3, page 382-396 ISSN 0033-5894 1096-0287 journal-article 2012 crcambridgeupr https://doi.org/10.1016/j.yqres.2012.01.005 2024-05-22T12:54:47Z A lake-level record of Lake Ledro (northern Italy) spans the entire Holocene with a chronology derived from 51 radiocarbon dates. It is based on a specific sedimentological approach that combines data from five 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 Holocene was punctuated by successive centennial-scale highstands. Correlations with the Preboreal oscillation and the 8.2 ka event, and comparison with the atmospheric 14 C 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 Cambridge University Press Quaternary Research 77 3 382 396 |
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Cambridge University Press |
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English |
description |
A lake-level record of Lake Ledro (northern Italy) spans the entire Holocene with a chronology derived from 51 radiocarbon dates. It is based on a specific sedimentological approach that combines data from five 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 Holocene was punctuated by successive centennial-scale highstands. Correlations with the Preboreal oscillation and the 8.2 ka event, and comparison with the atmospheric 14 C 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. |
format |
Article in Journal/Newspaper |
author |
Magny, Michel Joannin, Sébastien Galop, Didier Vannière, Boris Haas, Jean Nicolas Bassetti, Michele Bellintani, Paolo Scandolari, Romana Desmet, Marc |
spellingShingle |
Magny, Michel Joannin, Sébastien Galop, Didier Vannière, Boris Haas, Jean Nicolas Bassetti, Michele 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 |
author_facet |
Magny, Michel Joannin, Sébastien Galop, Didier Vannière, Boris Haas, Jean Nicolas Bassetti, Michele 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 |
Cambridge University Press (CUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1016/j.yqres.2012.01.005 http://api.elsevier.com/content/article/PII:S0033589412000063?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589412000063?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400004051 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Quaternary Research volume 77, issue 3, page 382-396 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/j.yqres.2012.01.005 |
container_title |
Quaternary Research |
container_volume |
77 |
container_issue |
3 |
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382 |
op_container_end_page |
396 |
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1802009191251968000 |