Late-Holocene NAO and oceanic forcing on high-altitude proglacial sedimentation (Lake Bramant, Western French Alps)
Comparison of glacially derived clastic inputs in high altitude proglacial lake Bramant (Western French Alps) with measured North Atlantic Oscillation winter (NAO w ) index reveals an inverse correlation between ad 1884 and 1968 at the pluridecadal timescale (20–25 years). This reflects periodical v...
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crsagepubl:10.1177/0959683613483616 2024-04-07T07:54:12+00:00 Late-Holocene NAO and oceanic forcing on high-altitude proglacial sedimentation (Lake Bramant, Western French Alps) Guyard, Hervé Chapron, Emmanuel St-Onge, Guillaume Labrie, Jacques 2013 http://dx.doi.org/10.1177/0959683613483616 http://journals.sagepub.com/doi/pdf/10.1177/0959683613483616 http://journals.sagepub.com/doi/full-xml/10.1177/0959683613483616 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 23, issue 8, page 1163-1172 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2013 crsagepubl https://doi.org/10.1177/0959683613483616 2024-03-08T03:20:34Z Comparison of glacially derived clastic inputs in high altitude proglacial lake Bramant (Western French Alps) with measured North Atlantic Oscillation winter (NAO w ) index reveals an inverse correlation between ad 1884 and 1968 at the pluridecadal timescale (20–25 years). This reflects periodical variations in snow accumulation over Lake Bramant catchment area partly influencing the glacier mass balance in the watershed. Further comparisons with reconstructed NAO w index since ad 1500 highlight spatial and temporal variations of the pluridecadal NAO w influence on this alpine climate, especially at the end of the ‘Little Ice Age’. In addition, wavelet analysis of continuous proxies of clastic sedimentation over the last 4150 years indicates significant pluridecadal variability at frequencies compatible with the NAO (30 years), while periods centered at 60–70 years could also be linked to the North Atlantic Ocean–atmosphere internal variability (Atlantic Multidecadal Oscillation (AMO)). The influence of the North Atlantic deep water production on the regional alpine climate is also suggested by a significant 550 yr cycle of clastic inputs since 2800 cal. BP. Coupling between the North Atlantic Ocean and the atmosphere seems therefore to play a fundamental role on glacier mass balance and climate during the late Holocene in the western Alps. Article in Journal/Newspaper North Atlantic Deep Water North Atlantic North Atlantic oscillation SAGE Publications The Holocene 23 8 1163 1172 |
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SAGE Publications |
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English |
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Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
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Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Guyard, Hervé Chapron, Emmanuel St-Onge, Guillaume Labrie, Jacques Late-Holocene NAO and oceanic forcing on high-altitude proglacial sedimentation (Lake Bramant, Western French Alps) |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
Comparison of glacially derived clastic inputs in high altitude proglacial lake Bramant (Western French Alps) with measured North Atlantic Oscillation winter (NAO w ) index reveals an inverse correlation between ad 1884 and 1968 at the pluridecadal timescale (20–25 years). This reflects periodical variations in snow accumulation over Lake Bramant catchment area partly influencing the glacier mass balance in the watershed. Further comparisons with reconstructed NAO w index since ad 1500 highlight spatial and temporal variations of the pluridecadal NAO w influence on this alpine climate, especially at the end of the ‘Little Ice Age’. In addition, wavelet analysis of continuous proxies of clastic sedimentation over the last 4150 years indicates significant pluridecadal variability at frequencies compatible with the NAO (30 years), while periods centered at 60–70 years could also be linked to the North Atlantic Ocean–atmosphere internal variability (Atlantic Multidecadal Oscillation (AMO)). The influence of the North Atlantic deep water production on the regional alpine climate is also suggested by a significant 550 yr cycle of clastic inputs since 2800 cal. BP. Coupling between the North Atlantic Ocean and the atmosphere seems therefore to play a fundamental role on glacier mass balance and climate during the late Holocene in the western Alps. |
format |
Article in Journal/Newspaper |
author |
Guyard, Hervé Chapron, Emmanuel St-Onge, Guillaume Labrie, Jacques |
author_facet |
Guyard, Hervé Chapron, Emmanuel St-Onge, Guillaume Labrie, Jacques |
author_sort |
Guyard, Hervé |
title |
Late-Holocene NAO and oceanic forcing on high-altitude proglacial sedimentation (Lake Bramant, Western French Alps) |
title_short |
Late-Holocene NAO and oceanic forcing on high-altitude proglacial sedimentation (Lake Bramant, Western French Alps) |
title_full |
Late-Holocene NAO and oceanic forcing on high-altitude proglacial sedimentation (Lake Bramant, Western French Alps) |
title_fullStr |
Late-Holocene NAO and oceanic forcing on high-altitude proglacial sedimentation (Lake Bramant, Western French Alps) |
title_full_unstemmed |
Late-Holocene NAO and oceanic forcing on high-altitude proglacial sedimentation (Lake Bramant, Western French Alps) |
title_sort |
late-holocene nao and oceanic forcing on high-altitude proglacial sedimentation (lake bramant, western french alps) |
publisher |
SAGE Publications |
publishDate |
2013 |
url |
http://dx.doi.org/10.1177/0959683613483616 http://journals.sagepub.com/doi/pdf/10.1177/0959683613483616 http://journals.sagepub.com/doi/full-xml/10.1177/0959683613483616 |
genre |
North Atlantic Deep Water North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic Deep Water North Atlantic North Atlantic oscillation |
op_source |
The Holocene volume 23, issue 8, page 1163-1172 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683613483616 |
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The Holocene |
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23 |
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1163 |
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1172 |
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1795670596200169472 |