The Alpine LGM in the boreal ice-sheets game
New chronologic and stratigraphic constraints from the Garda morainic amphitheater define the extension of the last glaciation in the Adige-Sarca system and improve the Alpine LGM dataset. Together with the available chronology of the Rhine and Tagliamento systems, our results indicate a synchronous...
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Online Access: | http://hdl.handle.net/11449/159549 https://doi.org/10.1038/s41598-017-02148-7 |
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ftunivespir:oai:repositorio.unesp.br:11449/159549 2023-07-02T03:32:36+02:00 The Alpine LGM in the boreal ice-sheets game Monegato, Giovanni Scardia, Giancarlo Hajdas, Irka Rizzini, Francesca Piccin, Andrea Universidade Estadual Paulista (UNESP) 2017-05-18 8 http://hdl.handle.net/11449/159549 https://doi.org/10.1038/s41598-017-02148-7 eng eng Nature Publishing Group Scientific Reports 1,533 http://dx.doi.org/10.1038/s41598-017-02148-7 Scientific Reports. London: Nature Publishing Group, v. 7, 8 p., 2017. 2045-2322 http://hdl.handle.net/11449/159549 doi:10.1038/s41598-017-02148-7 WOS:000401526200017 WOS000401526200017.pdf openAccess info:eu-repo/semantics/article 2017 ftunivespir https://doi.org/10.1038/s41598-017-02148-7 2023-06-12T16:59:32Z New chronologic and stratigraphic constraints from the Garda morainic amphitheater define the extension of the last glaciation in the Adige-Sarca system and improve the Alpine LGM dataset. Together with the available chronology of the Rhine and Tagliamento systems, our results indicate a synchronous maximum culmination of Alpine glaciers during the LGM, which anticipated by about 3.5 ka the maximum extension of the Eurasian Ice Sheet (EIS). This is ascribed to the sensitivity of Alpine glaciers to the availability of moisture from southerly circulation, as recently documented by speleothem delta O-18 curve from Sieben Hengste (7 H). According to global circulation models, the waxing of the North American Ice Sheet (NAIS) at 26-23 ka pushed the North Atlantic jet stream southwards. This enhanced precipitation rates in southern Europe by advection of moisture from the Mediterranean Sea, triggering expansion of the Alpine glaciers. NAIS waning after 23 ka led to the gradual re-establishment of westerly circulation and renewal of a moisture supply to northern Europe, feeding the EIS to its maximum volume. Reduced supply of moisture from the Mediterranean Sea sealed the fate of the Alpine glaciers, which entered a final recessional phase after 22 ka and faded out after 17.5 ka. Article in Journal/Newspaper Ice Sheet North Atlantic Universidade Estadual Paulista São Paulo: Repositório Institucional UNESP Scientific Reports 7 1 |
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Open Polar |
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Universidade Estadual Paulista São Paulo: Repositório Institucional UNESP |
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ftunivespir |
language |
English |
description |
New chronologic and stratigraphic constraints from the Garda morainic amphitheater define the extension of the last glaciation in the Adige-Sarca system and improve the Alpine LGM dataset. Together with the available chronology of the Rhine and Tagliamento systems, our results indicate a synchronous maximum culmination of Alpine glaciers during the LGM, which anticipated by about 3.5 ka the maximum extension of the Eurasian Ice Sheet (EIS). This is ascribed to the sensitivity of Alpine glaciers to the availability of moisture from southerly circulation, as recently documented by speleothem delta O-18 curve from Sieben Hengste (7 H). According to global circulation models, the waxing of the North American Ice Sheet (NAIS) at 26-23 ka pushed the North Atlantic jet stream southwards. This enhanced precipitation rates in southern Europe by advection of moisture from the Mediterranean Sea, triggering expansion of the Alpine glaciers. NAIS waning after 23 ka led to the gradual re-establishment of westerly circulation and renewal of a moisture supply to northern Europe, feeding the EIS to its maximum volume. Reduced supply of moisture from the Mediterranean Sea sealed the fate of the Alpine glaciers, which entered a final recessional phase after 22 ka and faded out after 17.5 ka. |
author2 |
Universidade Estadual Paulista (UNESP) |
format |
Article in Journal/Newspaper |
author |
Monegato, Giovanni Scardia, Giancarlo Hajdas, Irka Rizzini, Francesca Piccin, Andrea |
spellingShingle |
Monegato, Giovanni Scardia, Giancarlo Hajdas, Irka Rizzini, Francesca Piccin, Andrea The Alpine LGM in the boreal ice-sheets game |
author_facet |
Monegato, Giovanni Scardia, Giancarlo Hajdas, Irka Rizzini, Francesca Piccin, Andrea |
author_sort |
Monegato, Giovanni |
title |
The Alpine LGM in the boreal ice-sheets game |
title_short |
The Alpine LGM in the boreal ice-sheets game |
title_full |
The Alpine LGM in the boreal ice-sheets game |
title_fullStr |
The Alpine LGM in the boreal ice-sheets game |
title_full_unstemmed |
The Alpine LGM in the boreal ice-sheets game |
title_sort |
alpine lgm in the boreal ice-sheets game |
publisher |
Nature Publishing Group |
publishDate |
2017 |
url |
http://hdl.handle.net/11449/159549 https://doi.org/10.1038/s41598-017-02148-7 |
genre |
Ice Sheet North Atlantic |
genre_facet |
Ice Sheet North Atlantic |
op_relation |
Scientific Reports 1,533 http://dx.doi.org/10.1038/s41598-017-02148-7 Scientific Reports. London: Nature Publishing Group, v. 7, 8 p., 2017. 2045-2322 http://hdl.handle.net/11449/159549 doi:10.1038/s41598-017-02148-7 WOS:000401526200017 WOS000401526200017.pdf |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1038/s41598-017-02148-7 |
container_title |
Scientific Reports |
container_volume |
7 |
container_issue |
1 |
_version_ |
1770272214933831680 |