Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event
Snowball, I., Muscheler, R., Zillén, L., Sandgren, P., Stanton, T. & Ljung, K. 2010: Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event. Boreas , Vol. 39, pp. 720–733. 10.1111/j.1502‐3885.2010.00167.x. ISSN 0300‐9483. A series of...
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crwiley:10.1111/j.1502-3885.2010.00167.x 2024-09-15T18:10:00+00:00 Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event SNOWBALL, IAN MUSCHELER, RAIMUND ZILLÉN, LOVISA SANDGREN, PER STANTON, TANIA LJUNG, KARL 2010 http://dx.doi.org/10.1111/j.1502-3885.2010.00167.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2010.00167.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2010.00167.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 39, issue 4, page 720-733 ISSN 0300-9483 1502-3885 journal-article 2010 crwiley https://doi.org/10.1111/j.1502-3885.2010.00167.x 2024-08-15T04:17:45Z Snowball, I., Muscheler, R., Zillén, L., Sandgren, P., Stanton, T. & Ljung, K. 2010: Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event. Boreas , Vol. 39, pp. 720–733. 10.1111/j.1502‐3885.2010.00167.x. ISSN 0300‐9483. A series of nine radiocarbon measurements obtained at increments of 50 years was used to wiggle match varved sediments in Lake Kälksjön (west central Sweden) to the calendar year time scale provided by the tree‐ring‐derived radiocarbon calibration curve. The anchor point for a series of 400 varves known to span the ‘8.2 kyr cold event’ was derived from a combination of correlation analysis, Monte Carlo statistics and Bayesian age modelling. The GRIP and NorthGRIP ice‐cores were matched to the same absolute time scale by comparing 10 Be data and tree‐ring Δ 14 C. The radiocarbon‐based wiggle match, organic carbon measurements, mineral magnetic parameters and XRF data reconstruct a distinct period of enhanced erosion in Kälksjön's catchment between 8066 ± 25 and 7920 ± 25 cal. yr BP. Prior to human impact, the increased erosion in the boreal environment is assigned to increased winter precipitation in the form of snow, which caused spring meltwater discharge to intensify. Our results suggest that the abrupt onset of increased winter precipitation in west central Sweden started at least 50 years after the onset of the ‘8.2 kyr cold event’ as defined by oxygen isotope data from Greenland. The study highlights the value of synchronized time scales in the reconstruction of abrupt climate changes based on proxy data. Article in Journal/Newspaper Greenland GRIP Wiley Online Library Boreas 39 4 720 733 |
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English |
description |
Snowball, I., Muscheler, R., Zillén, L., Sandgren, P., Stanton, T. & Ljung, K. 2010: Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event. Boreas , Vol. 39, pp. 720–733. 10.1111/j.1502‐3885.2010.00167.x. ISSN 0300‐9483. A series of nine radiocarbon measurements obtained at increments of 50 years was used to wiggle match varved sediments in Lake Kälksjön (west central Sweden) to the calendar year time scale provided by the tree‐ring‐derived radiocarbon calibration curve. The anchor point for a series of 400 varves known to span the ‘8.2 kyr cold event’ was derived from a combination of correlation analysis, Monte Carlo statistics and Bayesian age modelling. The GRIP and NorthGRIP ice‐cores were matched to the same absolute time scale by comparing 10 Be data and tree‐ring Δ 14 C. The radiocarbon‐based wiggle match, organic carbon measurements, mineral magnetic parameters and XRF data reconstruct a distinct period of enhanced erosion in Kälksjön's catchment between 8066 ± 25 and 7920 ± 25 cal. yr BP. Prior to human impact, the increased erosion in the boreal environment is assigned to increased winter precipitation in the form of snow, which caused spring meltwater discharge to intensify. Our results suggest that the abrupt onset of increased winter precipitation in west central Sweden started at least 50 years after the onset of the ‘8.2 kyr cold event’ as defined by oxygen isotope data from Greenland. The study highlights the value of synchronized time scales in the reconstruction of abrupt climate changes based on proxy data. |
format |
Article in Journal/Newspaper |
author |
SNOWBALL, IAN MUSCHELER, RAIMUND ZILLÉN, LOVISA SANDGREN, PER STANTON, TANIA LJUNG, KARL |
spellingShingle |
SNOWBALL, IAN MUSCHELER, RAIMUND ZILLÉN, LOVISA SANDGREN, PER STANTON, TANIA LJUNG, KARL Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event |
author_facet |
SNOWBALL, IAN MUSCHELER, RAIMUND ZILLÉN, LOVISA SANDGREN, PER STANTON, TANIA LJUNG, KARL |
author_sort |
SNOWBALL, IAN |
title |
Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event |
title_short |
Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event |
title_full |
Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event |
title_fullStr |
Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event |
title_full_unstemmed |
Radiocarbon wiggle matching of Swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event |
title_sort |
radiocarbon wiggle matching of swedish lake varves reveals asynchronous climate changes around the 8.2 kyr cold event |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.1111/j.1502-3885.2010.00167.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2010.00167.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2010.00167.x |
genre |
Greenland GRIP |
genre_facet |
Greenland GRIP |
op_source |
Boreas volume 39, issue 4, page 720-733 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.2010.00167.x |
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Boreas |
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39 |
container_issue |
4 |
container_start_page |
720 |
op_container_end_page |
733 |
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1810447606638182400 |