Stable isotope and trace element investigation of two contemporaneous annually-laminated stalagmites from northeastern China surrounding the "8.2 ka event"
The prominent "8.2 ka event" was well documented in the Greenland ice cores. It remains unclear, however, about its duration, structure and forcing mechanism at low- to mid-latitude regions. Here we use the physical and geochemical data of stalagmites from the Nuanhe Cave in Liaoning Provi...
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Copernicus Publications
2012
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00024112 2023-05-15T16:29:42+02:00 Stable isotope and trace element investigation of two contemporaneous annually-laminated stalagmites from northeastern China surrounding the "8.2 ka event" Wu, J. Y. Wang, Y. J. Cheng, H. Kong, X. G. Liu, D. B. 2012-10 electronic https://doi.org/10.5194/cp-8-1497-2012 https://noa.gwlb.de/receive/cop_mods_00024112 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024067/cp-8-1497-2012.pdf https://cp.copernicus.org/articles/8/1497/2012/cp-8-1497-2012.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-8-1497-2012 https://noa.gwlb.de/receive/cop_mods_00024112 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024067/cp-8-1497-2012.pdf https://cp.copernicus.org/articles/8/1497/2012/cp-8-1497-2012.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2012 ftnonlinearchiv https://doi.org/10.5194/cp-8-1497-2012 2022-02-08T22:50:18Z The prominent "8.2 ka event" was well documented in the Greenland ice cores. It remains unclear, however, about its duration, structure and forcing mechanism at low- to mid-latitude regions. Here we use the physical and geochemical data of stalagmites from the Nuanhe Cave in Liaoning Province, northeastern China, to reconstruct a detailed history of East Asian monsoons covering the entire duration of the event. High-resolution chronologies of two contemporaneous stalagmites, each consisting of at least 770 yr annual growth bands, were established by calibrating and anchoring the floating band-counting ages against five high-precision 230Th dates. Two oxygen isotope profiles replicate each other on annual-decadal timescales despite their difference in growth rates, indicating that the δ18O variability has a climatic origin largely associated with changes in the rainfall δ18O from the West Pacific during summer season. A signal from the "8.2ka event" was faint in our δ18O records, not as significant as Indian monsoon dominated stalagmite δ18O records from Qunf in Oman and Dongge in Southern China. However, our δ13C and Ba/Ca profiles, as indicators of local environmental changes, provide strong support for a climate reversal centred at 8.2 ka BP, which is likely controlled by winter monsoon circulations via the westerly winds associated with North Atlantic climate. Therefore, we concluded that the winter- and summer-Asian monsoons responded independently to the high northern latitude climate. Article in Journal/Newspaper Greenland Greenland ice cores North Atlantic Niedersächsisches Online-Archiv NOA Greenland Indian Pacific Climate of the Past 8 5 1497 1507 |
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Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Wu, J. Y. Wang, Y. J. Cheng, H. Kong, X. G. Liu, D. B. Stable isotope and trace element investigation of two contemporaneous annually-laminated stalagmites from northeastern China surrounding the "8.2 ka event" |
topic_facet |
article Verlagsveröffentlichung |
description |
The prominent "8.2 ka event" was well documented in the Greenland ice cores. It remains unclear, however, about its duration, structure and forcing mechanism at low- to mid-latitude regions. Here we use the physical and geochemical data of stalagmites from the Nuanhe Cave in Liaoning Province, northeastern China, to reconstruct a detailed history of East Asian monsoons covering the entire duration of the event. High-resolution chronologies of two contemporaneous stalagmites, each consisting of at least 770 yr annual growth bands, were established by calibrating and anchoring the floating band-counting ages against five high-precision 230Th dates. Two oxygen isotope profiles replicate each other on annual-decadal timescales despite their difference in growth rates, indicating that the δ18O variability has a climatic origin largely associated with changes in the rainfall δ18O from the West Pacific during summer season. A signal from the "8.2ka event" was faint in our δ18O records, not as significant as Indian monsoon dominated stalagmite δ18O records from Qunf in Oman and Dongge in Southern China. However, our δ13C and Ba/Ca profiles, as indicators of local environmental changes, provide strong support for a climate reversal centred at 8.2 ka BP, which is likely controlled by winter monsoon circulations via the westerly winds associated with North Atlantic climate. Therefore, we concluded that the winter- and summer-Asian monsoons responded independently to the high northern latitude climate. |
format |
Article in Journal/Newspaper |
author |
Wu, J. Y. Wang, Y. J. Cheng, H. Kong, X. G. Liu, D. B. |
author_facet |
Wu, J. Y. Wang, Y. J. Cheng, H. Kong, X. G. Liu, D. B. |
author_sort |
Wu, J. Y. |
title |
Stable isotope and trace element investigation of two contemporaneous annually-laminated stalagmites from northeastern China surrounding the "8.2 ka event" |
title_short |
Stable isotope and trace element investigation of two contemporaneous annually-laminated stalagmites from northeastern China surrounding the "8.2 ka event" |
title_full |
Stable isotope and trace element investigation of two contemporaneous annually-laminated stalagmites from northeastern China surrounding the "8.2 ka event" |
title_fullStr |
Stable isotope and trace element investigation of two contemporaneous annually-laminated stalagmites from northeastern China surrounding the "8.2 ka event" |
title_full_unstemmed |
Stable isotope and trace element investigation of two contemporaneous annually-laminated stalagmites from northeastern China surrounding the "8.2 ka event" |
title_sort |
stable isotope and trace element investigation of two contemporaneous annually-laminated stalagmites from northeastern china surrounding the "8.2 ka event" |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/cp-8-1497-2012 https://noa.gwlb.de/receive/cop_mods_00024112 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024067/cp-8-1497-2012.pdf https://cp.copernicus.org/articles/8/1497/2012/cp-8-1497-2012.pdf |
geographic |
Greenland Indian Pacific |
geographic_facet |
Greenland Indian Pacific |
genre |
Greenland Greenland ice cores North Atlantic |
genre_facet |
Greenland Greenland ice cores North Atlantic |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-8-1497-2012 https://noa.gwlb.de/receive/cop_mods_00024112 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00024067/cp-8-1497-2012.pdf https://cp.copernicus.org/articles/8/1497/2012/cp-8-1497-2012.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-8-1497-2012 |
container_title |
Climate of the Past |
container_volume |
8 |
container_issue |
5 |
container_start_page |
1497 |
op_container_end_page |
1507 |
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1766019408280420352 |