Estimating the regional climate signal in a late Pleistocene and early Holocene lake-sediment δ 18 O record from Vermont, USA.
Abstract We present a new oxygen isotope (δ 18 O) record from carbonate-rich lake sediments from central Vermont. The record from Twin Ponds spans from 13.5 cal ka BP (1950 AD) to present, but contains a 6 ka long hiatus starting shortly after 7.5 cal ka BP. We compare the record for ca. 13.5–7.5 ca...
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crcambridgeupr:10.1016/j.yqres.2016.02.009 2024-06-09T07:46:50+00:00 Estimating the regional climate signal in a late Pleistocene and early Holocene lake-sediment δ 18 O record from Vermont, USA. Mandl, Maximilian Benedict Shuman, Bryan Nolan Marsicek, Jeremiah Grigg, Laurie NSF Ecosystems 2016 http://dx.doi.org/10.1016/j.yqres.2016.02.009 http://api.elsevier.com/content/article/PII:S0033589416000235?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589416000235?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400039727 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms http://www.elsevier.com/tdm/userlicense/1.0/ Quaternary Research volume 86, issue 1, page 67-78 ISSN 0033-5894 1096-0287 journal-article 2016 crcambridgeupr https://doi.org/10.1016/j.yqres.2016.02.009 2024-05-15T13:17:49Z Abstract We present a new oxygen isotope (δ 18 O) record from carbonate-rich lake sediments from central Vermont. The record from Twin Ponds spans from 13.5 cal ka BP (1950 AD) to present, but contains a 6 ka long hiatus starting shortly after 7.5 cal ka BP. We compare the record for ca. 13.5–7.5 cal ka BP with published δ 18 O data from the region after using a Bayesian approach to produce many possible chronologies for each site. Principal component analysis then identified chronologically-robust, multi-site oxygen isotope signals, including negative values during the Younger Dryas, but no significant deviations from the early Holocene mean of the regional records. However, differences among sites indicate significant trends that likely relate to interacting changes in the regional gradients of seasonal temperatures and precipitation as well as moisture sources, moisture pathways, and aridity that were controlled by large-scale climatic controls such as insolation, the progressive decline of the Laurentide Ice Sheet, and changes in oceanic circulation. Centennial shifts punctuate these trends at ca. 9.3 and 8.2 cal ka BP, and reveal that the local character of these short-lived features requires a detailed understanding of lake hydrology and regional isotopic gradients to yield reliable information for regional climate reconstructions. Article in Journal/Newspaper Ice Sheet Cambridge University Press Twin Ponds ENVELOPE(-57.065,-57.065,49.600,49.600) Quaternary Research 86 1 67 78 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract We present a new oxygen isotope (δ 18 O) record from carbonate-rich lake sediments from central Vermont. The record from Twin Ponds spans from 13.5 cal ka BP (1950 AD) to present, but contains a 6 ka long hiatus starting shortly after 7.5 cal ka BP. We compare the record for ca. 13.5–7.5 cal ka BP with published δ 18 O data from the region after using a Bayesian approach to produce many possible chronologies for each site. Principal component analysis then identified chronologically-robust, multi-site oxygen isotope signals, including negative values during the Younger Dryas, but no significant deviations from the early Holocene mean of the regional records. However, differences among sites indicate significant trends that likely relate to interacting changes in the regional gradients of seasonal temperatures and precipitation as well as moisture sources, moisture pathways, and aridity that were controlled by large-scale climatic controls such as insolation, the progressive decline of the Laurentide Ice Sheet, and changes in oceanic circulation. Centennial shifts punctuate these trends at ca. 9.3 and 8.2 cal ka BP, and reveal that the local character of these short-lived features requires a detailed understanding of lake hydrology and regional isotopic gradients to yield reliable information for regional climate reconstructions. |
author2 |
NSF Ecosystems |
format |
Article in Journal/Newspaper |
author |
Mandl, Maximilian Benedict Shuman, Bryan Nolan Marsicek, Jeremiah Grigg, Laurie |
spellingShingle |
Mandl, Maximilian Benedict Shuman, Bryan Nolan Marsicek, Jeremiah Grigg, Laurie Estimating the regional climate signal in a late Pleistocene and early Holocene lake-sediment δ 18 O record from Vermont, USA. |
author_facet |
Mandl, Maximilian Benedict Shuman, Bryan Nolan Marsicek, Jeremiah Grigg, Laurie |
author_sort |
Mandl, Maximilian Benedict |
title |
Estimating the regional climate signal in a late Pleistocene and early Holocene lake-sediment δ 18 O record from Vermont, USA. |
title_short |
Estimating the regional climate signal in a late Pleistocene and early Holocene lake-sediment δ 18 O record from Vermont, USA. |
title_full |
Estimating the regional climate signal in a late Pleistocene and early Holocene lake-sediment δ 18 O record from Vermont, USA. |
title_fullStr |
Estimating the regional climate signal in a late Pleistocene and early Holocene lake-sediment δ 18 O record from Vermont, USA. |
title_full_unstemmed |
Estimating the regional climate signal in a late Pleistocene and early Holocene lake-sediment δ 18 O record from Vermont, USA. |
title_sort |
estimating the regional climate signal in a late pleistocene and early holocene lake-sediment δ 18 o record from vermont, usa. |
publisher |
Cambridge University Press (CUP) |
publishDate |
2016 |
url |
http://dx.doi.org/10.1016/j.yqres.2016.02.009 http://api.elsevier.com/content/article/PII:S0033589416000235?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589416000235?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400039727 |
long_lat |
ENVELOPE(-57.065,-57.065,49.600,49.600) |
geographic |
Twin Ponds |
geographic_facet |
Twin Ponds |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Quaternary Research volume 86, issue 1, page 67-78 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms http://www.elsevier.com/tdm/userlicense/1.0/ |
op_doi |
https://doi.org/10.1016/j.yqres.2016.02.009 |
container_title |
Quaternary Research |
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86 |
container_issue |
1 |
container_start_page |
67 |
op_container_end_page |
78 |
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1801376822326198272 |