Climatic variability in the northwestern Alps, France, as evidenced by 600 years of terrigenous sedimentation in Lake Le Bourget
Cores recovered from periglacial Lake Le Bourget deep basin (northwestern Alps) were investigated to examine the influence of the ‘Little Ice Age’ (LIA) on terrigenous lacustrine sedimentation. Growing glaciers in the regional watershed induced catastrophic Rhone river floods and major underflow dep...
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Language: | English |
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Online Access: | http://dx.doi.org/10.1191/0959683602hl520rp http://journals.sagepub.com/doi/pdf/10.1191/0959683602hl520rp |
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crsagepubl:10.1191/0959683602hl520rp 2024-09-09T19:57:14+00:00 Climatic variability in the northwestern Alps, France, as evidenced by 600 years of terrigenous sedimentation in Lake Le Bourget Chapron, E. Desmet, M. De Putter, T. Loutre, M. F. Beck, C. Deconinck, J. F. 2002 http://dx.doi.org/10.1191/0959683602hl520rp http://journals.sagepub.com/doi/pdf/10.1191/0959683602hl520rp en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 12, issue 2, page 177-185 ISSN 0959-6836 1477-0911 journal-article 2002 crsagepubl https://doi.org/10.1191/0959683602hl520rp 2024-08-05T04:40:22Z Cores recovered from periglacial Lake Le Bourget deep basin (northwestern Alps) were investigated to examine the influence of the ‘Little Ice Age’ (LIA) on terrigenous lacustrine sedimentation. Growing glaciers in the regional watershed induced catastrophic Rhone river floods and major underflow deposits in the deep basin during the early fifteenth, the sixteenth and the mid-eighteenth centuries. The LIA is characterized by a decrease in deposition from interflows from AD-1550 to 1740 and an increase in deposition from underflows from AD-1550 to 1800. On one hand, spectral analyses of the laminations in interflow deposits reveal 4-5 years cyclicities from AD-1440 to 1550, as well as 7-8 and 13-14 years cyclicities from AD-1740 to 1870; on the other hand, spectral analyses of a clay mineral ratio reflecting underflow deposits highlight 45-50 years cyclicities from AD-1550 to 1800. These pluriannual, decadal and pluridecadal periods are typical of the North Atlantic Oscillation (NAO). A NAO-like period in our data would be a consequence of periodical variations in rainfall and snow accumulation during late autumn and winter over Lake Le Bourget's watershed. Article in Journal/Newspaper North Atlantic North Atlantic oscillation SAGE Publications Rhone ENVELOPE(158.733,158.733,-79.983,-79.983) The Holocene 12 2 177 185 |
institution |
Open Polar |
collection |
SAGE Publications |
op_collection_id |
crsagepubl |
language |
English |
description |
Cores recovered from periglacial Lake Le Bourget deep basin (northwestern Alps) were investigated to examine the influence of the ‘Little Ice Age’ (LIA) on terrigenous lacustrine sedimentation. Growing glaciers in the regional watershed induced catastrophic Rhone river floods and major underflow deposits in the deep basin during the early fifteenth, the sixteenth and the mid-eighteenth centuries. The LIA is characterized by a decrease in deposition from interflows from AD-1550 to 1740 and an increase in deposition from underflows from AD-1550 to 1800. On one hand, spectral analyses of the laminations in interflow deposits reveal 4-5 years cyclicities from AD-1440 to 1550, as well as 7-8 and 13-14 years cyclicities from AD-1740 to 1870; on the other hand, spectral analyses of a clay mineral ratio reflecting underflow deposits highlight 45-50 years cyclicities from AD-1550 to 1800. These pluriannual, decadal and pluridecadal periods are typical of the North Atlantic Oscillation (NAO). A NAO-like period in our data would be a consequence of periodical variations in rainfall and snow accumulation during late autumn and winter over Lake Le Bourget's watershed. |
format |
Article in Journal/Newspaper |
author |
Chapron, E. Desmet, M. De Putter, T. Loutre, M. F. Beck, C. Deconinck, J. F. |
spellingShingle |
Chapron, E. Desmet, M. De Putter, T. Loutre, M. F. Beck, C. Deconinck, J. F. Climatic variability in the northwestern Alps, France, as evidenced by 600 years of terrigenous sedimentation in Lake Le Bourget |
author_facet |
Chapron, E. Desmet, M. De Putter, T. Loutre, M. F. Beck, C. Deconinck, J. F. |
author_sort |
Chapron, E. |
title |
Climatic variability in the northwestern Alps, France, as evidenced by 600 years of terrigenous sedimentation in Lake Le Bourget |
title_short |
Climatic variability in the northwestern Alps, France, as evidenced by 600 years of terrigenous sedimentation in Lake Le Bourget |
title_full |
Climatic variability in the northwestern Alps, France, as evidenced by 600 years of terrigenous sedimentation in Lake Le Bourget |
title_fullStr |
Climatic variability in the northwestern Alps, France, as evidenced by 600 years of terrigenous sedimentation in Lake Le Bourget |
title_full_unstemmed |
Climatic variability in the northwestern Alps, France, as evidenced by 600 years of terrigenous sedimentation in Lake Le Bourget |
title_sort |
climatic variability in the northwestern alps, france, as evidenced by 600 years of terrigenous sedimentation in lake le bourget |
publisher |
SAGE Publications |
publishDate |
2002 |
url |
http://dx.doi.org/10.1191/0959683602hl520rp http://journals.sagepub.com/doi/pdf/10.1191/0959683602hl520rp |
long_lat |
ENVELOPE(158.733,158.733,-79.983,-79.983) |
geographic |
Rhone |
geographic_facet |
Rhone |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
The Holocene volume 12, issue 2, page 177-185 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1191/0959683602hl520rp |
container_title |
The Holocene |
container_volume |
12 |
container_issue |
2 |
container_start_page |
177 |
op_container_end_page |
185 |
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1809928132473389056 |