Glacial fluctuations since the ‘Medieval Warm Period’ at Rothera Point (western Antarctic Peninsula)
At a global scale, there is no evidence for synchronous multi-decadal warm (‘Medieval Warm Period’, MWP) or cold (‘Little Ice Age’, LIA) periods in the late Holocene. On the other hand, there is good correspondence globally in the timing of MWP or LIA and phases of glacier retreat and advance, respe...
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ftuninsubriairis:oai:irinsubria.uninsubria.it:11383/2026428 2024-04-21T07:52:09+00:00 Glacial fluctuations since the ‘Medieval Warm Period’ at Rothera Point (western Antarctic Peninsula) GUGLIELMIN, MAURO CANNONE, NICOLETTA Convey, Peter Malfasi, Francesco Guglielmin, Mauro Convey, Peter Malfasi, Francesco Cannone, Nicoletta 2016 ELETTRONICO http://hdl.handle.net/11383/2026428 https://doi.org/10.1177/0959683615596827 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000367628300014 volume:26 issue:1 firstpage:154 lastpage:158 numberofpages:5 journal:THE HOLOCENE http://hdl.handle.net/11383/2026428 doi:10.1177/0959683615596827 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84951859089 Antarctica climate change glaciers Holocene mosses radiocarbon dating info:eu-repo/semantics/article 2016 ftuninsubriairis https://doi.org/10.1177/0959683615596827 2024-03-28T01:24:45Z At a global scale, there is no evidence for synchronous multi-decadal warm (‘Medieval Warm Period’, MWP) or cold (‘Little Ice Age’, LIA) periods in the late Holocene. On the other hand, there is good correspondence globally in the timing of MWP or LIA and phases of glacier retreat and advance, respectively, with local exceptions mainly explained by the precipitation regime. Antarctica exhibits contrasting patterns, both regarding the existence of these two historical climatic periods and the glacial responses to climatic forcing. Here, we present evidence for glacial retreat corresponding to the MWP and a subsequent LIA advance at Rothera Point (67°34′S; 68°07′W) in Marguerite Bay, western Antarctic Peninsula. Deglaciation started at ca. 961–800 cal. yr BP or before, reaching a position similar to or even more withdrawn than the current state, with the subsequent period of glacial advance commencing between 671 and 558 cal. yr BP and continuing at least until 490–317 cal. yr BP. Based on new radiocarbon dates, during the MWP, the rate of glacier retreat was 1.6 m yr−1, which is comparable with recently observed rates (~0.6 m yr−1 between 1993 and 2011 and 1.4 m yr−1 between 2005 and 2011). Moreover, despite the recent air warming rate being higher, the glacial retreat rate during the MWP was similar to the present, suggesting that increased snow accumulation in recent decades may have counterbalanced the higher warming rate. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) The Holocene 26 1 154 158 |
institution |
Open Polar |
collection |
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) |
op_collection_id |
ftuninsubriairis |
language |
English |
topic |
Antarctica climate change glaciers Holocene mosses radiocarbon dating |
spellingShingle |
Antarctica climate change glaciers Holocene mosses radiocarbon dating GUGLIELMIN, MAURO CANNONE, NICOLETTA Convey, Peter Malfasi, Francesco Glacial fluctuations since the ‘Medieval Warm Period’ at Rothera Point (western Antarctic Peninsula) |
topic_facet |
Antarctica climate change glaciers Holocene mosses radiocarbon dating |
description |
At a global scale, there is no evidence for synchronous multi-decadal warm (‘Medieval Warm Period’, MWP) or cold (‘Little Ice Age’, LIA) periods in the late Holocene. On the other hand, there is good correspondence globally in the timing of MWP or LIA and phases of glacier retreat and advance, respectively, with local exceptions mainly explained by the precipitation regime. Antarctica exhibits contrasting patterns, both regarding the existence of these two historical climatic periods and the glacial responses to climatic forcing. Here, we present evidence for glacial retreat corresponding to the MWP and a subsequent LIA advance at Rothera Point (67°34′S; 68°07′W) in Marguerite Bay, western Antarctic Peninsula. Deglaciation started at ca. 961–800 cal. yr BP or before, reaching a position similar to or even more withdrawn than the current state, with the subsequent period of glacial advance commencing between 671 and 558 cal. yr BP and continuing at least until 490–317 cal. yr BP. Based on new radiocarbon dates, during the MWP, the rate of glacier retreat was 1.6 m yr−1, which is comparable with recently observed rates (~0.6 m yr−1 between 1993 and 2011 and 1.4 m yr−1 between 2005 and 2011). Moreover, despite the recent air warming rate being higher, the glacial retreat rate during the MWP was similar to the present, suggesting that increased snow accumulation in recent decades may have counterbalanced the higher warming rate. |
author2 |
Guglielmin, Mauro Convey, Peter Malfasi, Francesco Cannone, Nicoletta |
format |
Article in Journal/Newspaper |
author |
GUGLIELMIN, MAURO CANNONE, NICOLETTA Convey, Peter Malfasi, Francesco |
author_facet |
GUGLIELMIN, MAURO CANNONE, NICOLETTA Convey, Peter Malfasi, Francesco |
author_sort |
GUGLIELMIN, MAURO |
title |
Glacial fluctuations since the ‘Medieval Warm Period’ at Rothera Point (western Antarctic Peninsula) |
title_short |
Glacial fluctuations since the ‘Medieval Warm Period’ at Rothera Point (western Antarctic Peninsula) |
title_full |
Glacial fluctuations since the ‘Medieval Warm Period’ at Rothera Point (western Antarctic Peninsula) |
title_fullStr |
Glacial fluctuations since the ‘Medieval Warm Period’ at Rothera Point (western Antarctic Peninsula) |
title_full_unstemmed |
Glacial fluctuations since the ‘Medieval Warm Period’ at Rothera Point (western Antarctic Peninsula) |
title_sort |
glacial fluctuations since the ‘medieval warm period’ at rothera point (western antarctic peninsula) |
publishDate |
2016 |
url |
http://hdl.handle.net/11383/2026428 https://doi.org/10.1177/0959683615596827 |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000367628300014 volume:26 issue:1 firstpage:154 lastpage:158 numberofpages:5 journal:THE HOLOCENE http://hdl.handle.net/11383/2026428 doi:10.1177/0959683615596827 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84951859089 |
op_doi |
https://doi.org/10.1177/0959683615596827 |
container_title |
The Holocene |
container_volume |
26 |
container_issue |
1 |
container_start_page |
154 |
op_container_end_page |
158 |
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1796935402869751808 |