Non‐synchronous deposition of North Atlantic Ash Zone II in Greenland ice cores, and North Atlantic and Norwegian Sea sediments: an example of complex glacial‐stage tephra transport
Abstract Tephra provides regional chronostratigraphical marker horizons that can link different climate archives with highly needed accuracy and precision. The results presented in this work exemplify, however, that the intermittent storage of tephra in ice sheets and during its subsequent iceberg t...
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crwiley:10.1002/jqs.1499 2024-06-02T08:07:33+00:00 Non‐synchronous deposition of North Atlantic Ash Zone II in Greenland ice cores, and North Atlantic and Norwegian Sea sediments: an example of complex glacial‐stage tephra transport Brendryen, Jo Haflidason, Haflidi Sejrup, Hans Petter 2011 http://dx.doi.org/10.1002/jqs.1499 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1499 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1499 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 26, issue 7, page 739-745 ISSN 0267-8179 1099-1417 journal-article 2011 crwiley https://doi.org/10.1002/jqs.1499 2024-05-03T10:45:16Z Abstract Tephra provides regional chronostratigraphical marker horizons that can link different climate archives with highly needed accuracy and precision. The results presented in this work exemplify, however, that the intermittent storage of tephra in ice sheets and during its subsequent iceberg transport, especially during glacial stages, constitutes a potential source of serious error for the application of tephrochronology to Nordic Seas and North Atlantic sediment archives. The peak shard concentration of the rhyolitic component of the North Atlantic Ash Zone II (NAAZ‐II) tephra complex, often used to correlate marine and ice core records in Marine Isotope Stage (MIS) 3, is shown to lag the eruption event by ca. 100–400 years in some North Atlantic and Norwegian Sea cores. While still allowing for a correlation of archives on millennial timescales, this time delay in deposition is a major obstacle when addressing the lead–lag relationship on short timescales (years to centuries). A precise and accurate determination of lead–lag relationships between archives recording different parts of the climate system is crucial in order to test hypotheses about the processes leading to abrupt climate change and to evaluate results from climate models. Copyright © 2011 John Wiley & Sons, Ltd. Article in Journal/Newspaper Greenland Greenland ice cores ice core Nordic Seas North Atlantic Norwegian Sea Wiley Online Library Greenland Norwegian Sea Journal of Quaternary Science 26 7 739 745 |
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Wiley Online Library |
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English |
description |
Abstract Tephra provides regional chronostratigraphical marker horizons that can link different climate archives with highly needed accuracy and precision. The results presented in this work exemplify, however, that the intermittent storage of tephra in ice sheets and during its subsequent iceberg transport, especially during glacial stages, constitutes a potential source of serious error for the application of tephrochronology to Nordic Seas and North Atlantic sediment archives. The peak shard concentration of the rhyolitic component of the North Atlantic Ash Zone II (NAAZ‐II) tephra complex, often used to correlate marine and ice core records in Marine Isotope Stage (MIS) 3, is shown to lag the eruption event by ca. 100–400 years in some North Atlantic and Norwegian Sea cores. While still allowing for a correlation of archives on millennial timescales, this time delay in deposition is a major obstacle when addressing the lead–lag relationship on short timescales (years to centuries). A precise and accurate determination of lead–lag relationships between archives recording different parts of the climate system is crucial in order to test hypotheses about the processes leading to abrupt climate change and to evaluate results from climate models. Copyright © 2011 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Brendryen, Jo Haflidason, Haflidi Sejrup, Hans Petter |
spellingShingle |
Brendryen, Jo Haflidason, Haflidi Sejrup, Hans Petter Non‐synchronous deposition of North Atlantic Ash Zone II in Greenland ice cores, and North Atlantic and Norwegian Sea sediments: an example of complex glacial‐stage tephra transport |
author_facet |
Brendryen, Jo Haflidason, Haflidi Sejrup, Hans Petter |
author_sort |
Brendryen, Jo |
title |
Non‐synchronous deposition of North Atlantic Ash Zone II in Greenland ice cores, and North Atlantic and Norwegian Sea sediments: an example of complex glacial‐stage tephra transport |
title_short |
Non‐synchronous deposition of North Atlantic Ash Zone II in Greenland ice cores, and North Atlantic and Norwegian Sea sediments: an example of complex glacial‐stage tephra transport |
title_full |
Non‐synchronous deposition of North Atlantic Ash Zone II in Greenland ice cores, and North Atlantic and Norwegian Sea sediments: an example of complex glacial‐stage tephra transport |
title_fullStr |
Non‐synchronous deposition of North Atlantic Ash Zone II in Greenland ice cores, and North Atlantic and Norwegian Sea sediments: an example of complex glacial‐stage tephra transport |
title_full_unstemmed |
Non‐synchronous deposition of North Atlantic Ash Zone II in Greenland ice cores, and North Atlantic and Norwegian Sea sediments: an example of complex glacial‐stage tephra transport |
title_sort |
non‐synchronous deposition of north atlantic ash zone ii in greenland ice cores, and north atlantic and norwegian sea sediments: an example of complex glacial‐stage tephra transport |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1002/jqs.1499 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1499 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1499 |
geographic |
Greenland Norwegian Sea |
geographic_facet |
Greenland Norwegian Sea |
genre |
Greenland Greenland ice cores ice core Nordic Seas North Atlantic Norwegian Sea |
genre_facet |
Greenland Greenland ice cores ice core Nordic Seas North Atlantic Norwegian Sea |
op_source |
Journal of Quaternary Science volume 26, issue 7, page 739-745 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.1499 |
container_title |
Journal of Quaternary Science |
container_volume |
26 |
container_issue |
7 |
container_start_page |
739 |
op_container_end_page |
745 |
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1800752649515040768 |