Impact of Holocene climate variability on lacustrine records and human settlements in South Greenland
International audience Due to its sensitivity to climate changes, south Greenland is a particularly suitable area to study past global climate changes and their influence on locale Human settlements. A paleohydrological investigation was therefore carried out on two river-fed lakes: Lake Qallimiut a...
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2015
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Online Access: | https://insu.hal.science/insu-01240347 https://insu.hal.science/insu-01240347/document https://insu.hal.science/insu-01240347/file/cpd-11-5401-2015.pdf https://doi.org/10.5194/cpd-11-5401-2015 |
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ftinsu:oai:HAL:insu-01240347v1 |
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openpolar |
institution |
Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU]Sciences of the Universe [physics] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Guillemot, Typhaine Bichet, V Simonneau, Anaëlle Rius, D Massa, C Gauthier, E Richard, H. Magny, Michel Impact of Holocene climate variability on lacustrine records and human settlements in South Greenland |
topic_facet |
[SDU]Sciences of the Universe [physics] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience Due to its sensitivity to climate changes, south Greenland is a particularly suitable area to study past global climate changes and their influence on locale Human settlements. A paleohydrological investigation was therefore carried out on two river-fed lakes: Lake Qallimiut and Little Kangerluluup, both located close to the Labrador Sea in the historic 5 farming center of Greenland. Two sediment cores (QAL-2011 and LKG-2011), spanning the last four millennia, were retrieved and showed similar thin laminae, described by high magnetic susceptibility and density, high titanium and TOC / TN atomic ratio, and coarse grain size. They are also characterized either by inverse grading followed by normal grading or by normal grading only and a prevalence of red amorphous particles 10 and lignocellulosic fragments, typical of flood deposits. Flood events showed similar trend in both records: they mainly occurred during cooler and wetter periods characterized by weaker Greenlandic paleo-temperatures, substantial glacier advances, and a high precipitation on the Greenlandic Ice Sheet and North Atlantic ice-rafting events. They can therefore be interpreted as a result of ice and 15 snow-melting episodes. They occurred especially during rapid climate changes (RCC) such as the Middle to Late Holocene transition around 2250 BC, the Sub-boreal/Sub-atlantic transition around 700 BC and the Little Ice Age (LIA) between AD 1300 and AD 1900, separated by cycles of 1500 years and driven by solar forcing. These global RCC revealed by QAL-2011 and LKG-2011 flood events may have influenced Human 20 settlements in south Greenland, especially the paleo-Eskimo cultures and the Norse settlement, and have been mainly responsible for their demise. |
author2 |
Laboratoire Chrono-environnement (UMR 6249) (LCE) Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Guillemot, Typhaine Bichet, V Simonneau, Anaëlle Rius, D Massa, C Gauthier, E Richard, H. Magny, Michel |
author_facet |
Guillemot, Typhaine Bichet, V Simonneau, Anaëlle Rius, D Massa, C Gauthier, E Richard, H. Magny, Michel |
author_sort |
Guillemot, Typhaine |
title |
Impact of Holocene climate variability on lacustrine records and human settlements in South Greenland |
title_short |
Impact of Holocene climate variability on lacustrine records and human settlements in South Greenland |
title_full |
Impact of Holocene climate variability on lacustrine records and human settlements in South Greenland |
title_fullStr |
Impact of Holocene climate variability on lacustrine records and human settlements in South Greenland |
title_full_unstemmed |
Impact of Holocene climate variability on lacustrine records and human settlements in South Greenland |
title_sort |
impact of holocene climate variability on lacustrine records and human settlements in south greenland |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://insu.hal.science/insu-01240347 https://insu.hal.science/insu-01240347/document https://insu.hal.science/insu-01240347/file/cpd-11-5401-2015.pdf https://doi.org/10.5194/cpd-11-5401-2015 |
long_lat |
ENVELOPE(-45.333,-45.333,60.700,60.700) |
geographic |
Greenland Qallimiut |
geographic_facet |
Greenland Qallimiut |
genre |
eskimo* glacier Greenland greenlandic Ice Sheet Labrador Sea North Atlantic Paleo-Eskimo |
genre_facet |
eskimo* glacier Greenland greenlandic Ice Sheet Labrador Sea North Atlantic Paleo-Eskimo |
op_source |
ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://insu.hal.science/insu-01240347 Climate of the Past Discussions, 2015, 11, pp.5401-5438. ⟨10.5194/cpd-11-5401-2015⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cpd-11-5401-2015 insu-01240347 https://insu.hal.science/insu-01240347 https://insu.hal.science/insu-01240347/document https://insu.hal.science/insu-01240347/file/cpd-11-5401-2015.pdf doi:10.5194/cpd-11-5401-2015 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cpd-11-5401-2015 |
_version_ |
1790599857568743424 |
spelling |
ftinsu:oai:HAL:insu-01240347v1 2024-02-11T10:03:34+01:00 Impact of Holocene climate variability on lacustrine records and human settlements in South Greenland Guillemot, Typhaine Bichet, V Simonneau, Anaëlle Rius, D Massa, C Gauthier, E Richard, H. Magny, Michel Laboratoire Chrono-environnement (UMR 6249) (LCE) Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS) 2015 https://insu.hal.science/insu-01240347 https://insu.hal.science/insu-01240347/document https://insu.hal.science/insu-01240347/file/cpd-11-5401-2015.pdf https://doi.org/10.5194/cpd-11-5401-2015 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cpd-11-5401-2015 insu-01240347 https://insu.hal.science/insu-01240347 https://insu.hal.science/insu-01240347/document https://insu.hal.science/insu-01240347/file/cpd-11-5401-2015.pdf doi:10.5194/cpd-11-5401-2015 info:eu-repo/semantics/OpenAccess ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://insu.hal.science/insu-01240347 Climate of the Past Discussions, 2015, 11, pp.5401-5438. ⟨10.5194/cpd-11-5401-2015⟩ [SDU]Sciences of the Universe [physics] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2015 ftinsu https://doi.org/10.5194/cpd-11-5401-2015 2024-01-24T17:39:24Z International audience Due to its sensitivity to climate changes, south Greenland is a particularly suitable area to study past global climate changes and their influence on locale Human settlements. A paleohydrological investigation was therefore carried out on two river-fed lakes: Lake Qallimiut and Little Kangerluluup, both located close to the Labrador Sea in the historic 5 farming center of Greenland. Two sediment cores (QAL-2011 and LKG-2011), spanning the last four millennia, were retrieved and showed similar thin laminae, described by high magnetic susceptibility and density, high titanium and TOC / TN atomic ratio, and coarse grain size. They are also characterized either by inverse grading followed by normal grading or by normal grading only and a prevalence of red amorphous particles 10 and lignocellulosic fragments, typical of flood deposits. Flood events showed similar trend in both records: they mainly occurred during cooler and wetter periods characterized by weaker Greenlandic paleo-temperatures, substantial glacier advances, and a high precipitation on the Greenlandic Ice Sheet and North Atlantic ice-rafting events. They can therefore be interpreted as a result of ice and 15 snow-melting episodes. They occurred especially during rapid climate changes (RCC) such as the Middle to Late Holocene transition around 2250 BC, the Sub-boreal/Sub-atlantic transition around 700 BC and the Little Ice Age (LIA) between AD 1300 and AD 1900, separated by cycles of 1500 years and driven by solar forcing. These global RCC revealed by QAL-2011 and LKG-2011 flood events may have influenced Human 20 settlements in south Greenland, especially the paleo-Eskimo cultures and the Norse settlement, and have been mainly responsible for their demise. Article in Journal/Newspaper eskimo* glacier Greenland greenlandic Ice Sheet Labrador Sea North Atlantic Paleo-Eskimo Institut national des sciences de l'Univers: HAL-INSU Greenland Qallimiut ENVELOPE(-45.333,-45.333,60.700,60.700) |