Palaeoenvironmental history of the last six centuries in the Nettilling Lake area (Baffin Island, Canada): A multi-proxy analysis.
The Baffin Island region in the eastern Canadian Arctic has recently experienced a rapid warming, possibly unprecedented in millennia. To investigate the response of freshwater environments to this warming and place it in a secular perspective, we analyzed a 90-cm-long sediment core from Nettilling...
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Online Access: | https://espace.inrs.ca/id/eprint/5159/ https://espace.inrs.ca/id/eprint/5159/1/P2996.pdf https://doi.org/10.1177/0959683616645937 |
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ftinrsquebec:oai:espace.inrs.ca:5159 2023-05-15T14:28:46+02:00 Palaeoenvironmental history of the last six centuries in the Nettilling Lake area (Baffin Island, Canada): A multi-proxy analysis. Beaudoin, Anne Pienitz, Reinhard Francus, Pierre Zdanowicz, Christian St-Onge, Guillaume 2016 application/pdf https://espace.inrs.ca/id/eprint/5159/ https://espace.inrs.ca/id/eprint/5159/1/P2996.pdf https://doi.org/10.1177/0959683616645937 en eng https://espace.inrs.ca/id/eprint/5159/1/P2996.pdf Beaudoin, Anne, Pienitz, Reinhard, Francus, Pierre, Zdanowicz, Christian et St-Onge, Guillaume (2016). Palaeoenvironmental history of the last six centuries in the Nettilling Lake area (Baffin Island, Canada): A multi-proxy analysis. The Holocene , vol. 26 , nº 11. p. 1835-1846. DOI:10.1177/0959683616645937 <https://doi.org/10.1177/0959683616645937>. doi:10.1177/0959683616645937 Baffin island Canadian Arctic Archipelago palaeoenvironmental history sedimeent core varves Little Ice Age Penny Ice Cap Nettilling Lake Article Évalué par les pairs 2016 ftinrsquebec https://doi.org/10.1177/0959683616645937 2023-02-10T11:43:25Z The Baffin Island region in the eastern Canadian Arctic has recently experienced a rapid warming, possibly unprecedented in millennia. To investigate the response of freshwater environments to this warming and place it in a secular perspective, we analyzed a 90-cm-long sediment core from Nettilling Lake, the largest lake of the Canadian Arctic Archipelago. The core was taken from a part of the lake basin that receives meltwater and sediment inputs from the nearby Penny Ice Cap. The core time scale, established using ¹³⁷Cs and palaeomagnetic techniques, spans an estimated 600 years. A multi-proxy approach was used to document changes in the physical, chemical, and biological properties of the sediments. We found evidence for a relatively warm period (mid/late 15th century to mid/late 16th century) during the early part of the ‘Little Ice Age’ (LIA), characterized by high sedimentation rates and laminations. This was followed by colder, drier, and windier conditions corresponding to the coldest phase of LIA and coinciding with the latest and most extensive period of regional ice cap expansion (early 16th to late 19th centuries). A rapid warming occurred at the beginning of the 20th century. Variations in titanium (Ti) content in the core, a proxy for detrital sediment inputs, showed good agreement with reconstructed secular variations in summer melt rates on Penny Ice Cap between the mid-14th century and the present-day, providing supporting evidence for a climatic–hydrological connection between the ice cap and Nettilling Lake. Article in Journal/Newspaper Arctic Archipelago Arctic Baffin Island Baffin Canadian Arctic Archipelago Ice cap Nettilling Lake Penny Ice Cap Institut national de la recherche scientifique, Québec: Espace INRS Arctic Baffin Island Canadian Arctic Archipelago Canada Penny Ice Cap ENVELOPE(-66.214,-66.214,67.284,67.284) Nettilling Lake ENVELOPE(-70.333,-70.333,66.483,66.483) The Holocene 26 11 1835 1846 |
institution |
Open Polar |
collection |
Institut national de la recherche scientifique, Québec: Espace INRS |
op_collection_id |
ftinrsquebec |
language |
English |
topic |
Baffin island Canadian Arctic Archipelago palaeoenvironmental history sedimeent core varves Little Ice Age Penny Ice Cap Nettilling Lake |
spellingShingle |
Baffin island Canadian Arctic Archipelago palaeoenvironmental history sedimeent core varves Little Ice Age Penny Ice Cap Nettilling Lake Beaudoin, Anne Pienitz, Reinhard Francus, Pierre Zdanowicz, Christian St-Onge, Guillaume Palaeoenvironmental history of the last six centuries in the Nettilling Lake area (Baffin Island, Canada): A multi-proxy analysis. |
topic_facet |
Baffin island Canadian Arctic Archipelago palaeoenvironmental history sedimeent core varves Little Ice Age Penny Ice Cap Nettilling Lake |
description |
The Baffin Island region in the eastern Canadian Arctic has recently experienced a rapid warming, possibly unprecedented in millennia. To investigate the response of freshwater environments to this warming and place it in a secular perspective, we analyzed a 90-cm-long sediment core from Nettilling Lake, the largest lake of the Canadian Arctic Archipelago. The core was taken from a part of the lake basin that receives meltwater and sediment inputs from the nearby Penny Ice Cap. The core time scale, established using ¹³⁷Cs and palaeomagnetic techniques, spans an estimated 600 years. A multi-proxy approach was used to document changes in the physical, chemical, and biological properties of the sediments. We found evidence for a relatively warm period (mid/late 15th century to mid/late 16th century) during the early part of the ‘Little Ice Age’ (LIA), characterized by high sedimentation rates and laminations. This was followed by colder, drier, and windier conditions corresponding to the coldest phase of LIA and coinciding with the latest and most extensive period of regional ice cap expansion (early 16th to late 19th centuries). A rapid warming occurred at the beginning of the 20th century. Variations in titanium (Ti) content in the core, a proxy for detrital sediment inputs, showed good agreement with reconstructed secular variations in summer melt rates on Penny Ice Cap between the mid-14th century and the present-day, providing supporting evidence for a climatic–hydrological connection between the ice cap and Nettilling Lake. |
format |
Article in Journal/Newspaper |
author |
Beaudoin, Anne Pienitz, Reinhard Francus, Pierre Zdanowicz, Christian St-Onge, Guillaume |
author_facet |
Beaudoin, Anne Pienitz, Reinhard Francus, Pierre Zdanowicz, Christian St-Onge, Guillaume |
author_sort |
Beaudoin, Anne |
title |
Palaeoenvironmental history of the last six centuries in the Nettilling Lake area (Baffin Island, Canada): A multi-proxy analysis. |
title_short |
Palaeoenvironmental history of the last six centuries in the Nettilling Lake area (Baffin Island, Canada): A multi-proxy analysis. |
title_full |
Palaeoenvironmental history of the last six centuries in the Nettilling Lake area (Baffin Island, Canada): A multi-proxy analysis. |
title_fullStr |
Palaeoenvironmental history of the last six centuries in the Nettilling Lake area (Baffin Island, Canada): A multi-proxy analysis. |
title_full_unstemmed |
Palaeoenvironmental history of the last six centuries in the Nettilling Lake area (Baffin Island, Canada): A multi-proxy analysis. |
title_sort |
palaeoenvironmental history of the last six centuries in the nettilling lake area (baffin island, canada): a multi-proxy analysis. |
publishDate |
2016 |
url |
https://espace.inrs.ca/id/eprint/5159/ https://espace.inrs.ca/id/eprint/5159/1/P2996.pdf https://doi.org/10.1177/0959683616645937 |
long_lat |
ENVELOPE(-66.214,-66.214,67.284,67.284) ENVELOPE(-70.333,-70.333,66.483,66.483) |
geographic |
Arctic Baffin Island Canadian Arctic Archipelago Canada Penny Ice Cap Nettilling Lake |
geographic_facet |
Arctic Baffin Island Canadian Arctic Archipelago Canada Penny Ice Cap Nettilling Lake |
genre |
Arctic Archipelago Arctic Baffin Island Baffin Canadian Arctic Archipelago Ice cap Nettilling Lake Penny Ice Cap |
genre_facet |
Arctic Archipelago Arctic Baffin Island Baffin Canadian Arctic Archipelago Ice cap Nettilling Lake Penny Ice Cap |
op_relation |
https://espace.inrs.ca/id/eprint/5159/1/P2996.pdf Beaudoin, Anne, Pienitz, Reinhard, Francus, Pierre, Zdanowicz, Christian et St-Onge, Guillaume (2016). Palaeoenvironmental history of the last six centuries in the Nettilling Lake area (Baffin Island, Canada): A multi-proxy analysis. The Holocene , vol. 26 , nº 11. p. 1835-1846. DOI:10.1177/0959683616645937 <https://doi.org/10.1177/0959683616645937>. doi:10.1177/0959683616645937 |
op_doi |
https://doi.org/10.1177/0959683616645937 |
container_title |
The Holocene |
container_volume |
26 |
container_issue |
11 |
container_start_page |
1835 |
op_container_end_page |
1846 |
_version_ |
1766302930259935232 |