Five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from Lower Murray Lake, Ellesmere Island, Nunavut, Canada.
Sediments in Lower Murray Lake, northern Ellesmere Island, Nunavut Canada (81°21′ N, 69°32′ W) contain annual laminations (varves) that provide a record of sediment accumulation through the past 5000+ years. Annual mass accumulation was estimated based on measurements of varve thickness and sediment...
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ftinrsquebec:oai:espace.inrs.ca:10806 2023-05-15T14:27:01+02:00 Five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from Lower Murray Lake, Ellesmere Island, Nunavut, Canada. Cook, Timothy L. Bradley, Raymond S. Stoner, Joseph S. Francus, Pierre 2009 https://espace.inrs.ca/id/eprint/10806/ https://doi.org/10.1007/s10933-008-9252-0 unknown Cook, Timothy L., Bradley, Raymond S., Stoner, Joseph S. et Francus, Pierre (2009). Five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from Lower Murray Lake, Ellesmere Island, Nunavut, Canada. Journal of Paleolimnology , vol. 41 , nº 1. p. 77-94. DOI:10.1007/s10933-008-9252-0 <https://doi.org/10.1007/s10933-008-9252-0>. doi:10.1007/s10933-008-9252-0 varves holocene paleoclimate arctic lake sediments Ellesmere Island Article Évalué par les pairs 2009 ftinrsquebec https://doi.org/10.1007/s10933-008-9252-0 2023-02-10T11:46:22Z Sediments in Lower Murray Lake, northern Ellesmere Island, Nunavut Canada (81°21′ N, 69°32′ W) contain annual laminations (varves) that provide a record of sediment accumulation through the past 5000+ years. Annual mass accumulation was estimated based on measurements of varve thickness and sediment bulk density. Comparison of Lower Murray Lake mass accumulation with instrumental climate data, long-term records of climatic forcing mechanisms and other regional paleoclimate records suggests that lake sedimentation is positively correlated with regional melt season temperatures driven by radiative forcing. The temperature reconstruction suggests that recent temperatures are ~2.6°C higher than minimum temperatures observed during the Little Ice Age, maximum temperatures during the past 5200 years exceeded modern values by ~0.6°C, and that minimum temperatures observed approximately 2900 varve years BC were ~3.5°C colder than recent conditions. Recent temperatures were the warmest since the fourteenth century, but similar conditions existed intermittently during the period spanning ~4000–1000 varve years ago. A highly stable pattern of sedimentation throughout the period of record supports the use of annual mass accumulation in Lower Murray Lake as a reliable proxy indicator of local climatic conditions in the past. Article in Journal/Newspaper Arctic Arctic Ellesmere Island Nunavut Institut national de la recherche scientifique, Québec: Espace INRS Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Canada Ellesmere Island Nunavut Journal of Paleolimnology 41 1 77 94 |
institution |
Open Polar |
collection |
Institut national de la recherche scientifique, Québec: Espace INRS |
op_collection_id |
ftinrsquebec |
language |
unknown |
topic |
varves holocene paleoclimate arctic lake sediments Ellesmere Island |
spellingShingle |
varves holocene paleoclimate arctic lake sediments Ellesmere Island Cook, Timothy L. Bradley, Raymond S. Stoner, Joseph S. Francus, Pierre Five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from Lower Murray Lake, Ellesmere Island, Nunavut, Canada. |
topic_facet |
varves holocene paleoclimate arctic lake sediments Ellesmere Island |
description |
Sediments in Lower Murray Lake, northern Ellesmere Island, Nunavut Canada (81°21′ N, 69°32′ W) contain annual laminations (varves) that provide a record of sediment accumulation through the past 5000+ years. Annual mass accumulation was estimated based on measurements of varve thickness and sediment bulk density. Comparison of Lower Murray Lake mass accumulation with instrumental climate data, long-term records of climatic forcing mechanisms and other regional paleoclimate records suggests that lake sedimentation is positively correlated with regional melt season temperatures driven by radiative forcing. The temperature reconstruction suggests that recent temperatures are ~2.6°C higher than minimum temperatures observed during the Little Ice Age, maximum temperatures during the past 5200 years exceeded modern values by ~0.6°C, and that minimum temperatures observed approximately 2900 varve years BC were ~3.5°C colder than recent conditions. Recent temperatures were the warmest since the fourteenth century, but similar conditions existed intermittently during the period spanning ~4000–1000 varve years ago. A highly stable pattern of sedimentation throughout the period of record supports the use of annual mass accumulation in Lower Murray Lake as a reliable proxy indicator of local climatic conditions in the past. |
format |
Article in Journal/Newspaper |
author |
Cook, Timothy L. Bradley, Raymond S. Stoner, Joseph S. Francus, Pierre |
author_facet |
Cook, Timothy L. Bradley, Raymond S. Stoner, Joseph S. Francus, Pierre |
author_sort |
Cook, Timothy L. |
title |
Five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from Lower Murray Lake, Ellesmere Island, Nunavut, Canada. |
title_short |
Five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from Lower Murray Lake, Ellesmere Island, Nunavut, Canada. |
title_full |
Five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from Lower Murray Lake, Ellesmere Island, Nunavut, Canada. |
title_fullStr |
Five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from Lower Murray Lake, Ellesmere Island, Nunavut, Canada. |
title_full_unstemmed |
Five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from Lower Murray Lake, Ellesmere Island, Nunavut, Canada. |
title_sort |
five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from lower murray lake, ellesmere island, nunavut, canada. |
publishDate |
2009 |
url |
https://espace.inrs.ca/id/eprint/10806/ https://doi.org/10.1007/s10933-008-9252-0 |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) |
geographic |
Arctic Arctic Lake Canada Ellesmere Island Nunavut |
geographic_facet |
Arctic Arctic Lake Canada Ellesmere Island Nunavut |
genre |
Arctic Arctic Ellesmere Island Nunavut |
genre_facet |
Arctic Arctic Ellesmere Island Nunavut |
op_relation |
Cook, Timothy L., Bradley, Raymond S., Stoner, Joseph S. et Francus, Pierre (2009). Five thousand years of sediment transfer in a high arctic watershed recorded in annually laminated sediments from Lower Murray Lake, Ellesmere Island, Nunavut, Canada. Journal of Paleolimnology , vol. 41 , nº 1. p. 77-94. DOI:10.1007/s10933-008-9252-0 <https://doi.org/10.1007/s10933-008-9252-0>. doi:10.1007/s10933-008-9252-0 |
op_doi |
https://doi.org/10.1007/s10933-008-9252-0 |
container_title |
Journal of Paleolimnology |
container_volume |
41 |
container_issue |
1 |
container_start_page |
77 |
op_container_end_page |
94 |
_version_ |
1766300579375611904 |