The 8.2 ka event in northern Spain: timing, structure and climatic impact from a multi-proxy speleothem record
The 8.2 ka event is regarded as the most prominent climate anomaly of the Holocene and is thought to have been triggered by a meltwater release to the North Atlantic that was of sufficient magnitude to disrupt the Atlantic Meridional Overturning Circulation (AMOC). It is most clearly captured in Gre...
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ftcopernicus:oai:publications.copernicus.org:cp103593 2023-05-15T16:30:12+02:00 The 8.2 ka event in northern Spain: timing, structure and climatic impact from a multi-proxy speleothem record Kilhavn, Hege Couchoud, Isabelle Drysdale, Russell N. Rossi, Carlos Hellstrom, John Arnaud, Fabien Wong, Henri 2022-10-19 application/pdf https://doi.org/10.5194/cp-18-2321-2022 https://cp.copernicus.org/articles/18/2321/2022/ eng eng doi:10.5194/cp-18-2321-2022 https://cp.copernicus.org/articles/18/2321/2022/ eISSN: 1814-9332 Text 2022 ftcopernicus https://doi.org/10.5194/cp-18-2321-2022 2022-10-24T16:22:41Z The 8.2 ka event is regarded as the most prominent climate anomaly of the Holocene and is thought to have been triggered by a meltwater release to the North Atlantic that was of sufficient magnitude to disrupt the Atlantic Meridional Overturning Circulation (AMOC). It is most clearly captured in Greenland ice-core records, where it is reported as a cold and dry anomaly lasting ∼ 160 years, from 8.25 ± 0.05 until 8.09 ± 0.05 ka (Thomas et al., 2007). It is also recorded in several archives in the North Atlantic region; however, its interpreted timing, evolution and impacts vary significantly. This inconsistency is commonly attributed to poorly constrained chronologies and/or inadequately resolved time series. Here we present a high-resolution speleothem record of early Holocene palaeoclimate from El Soplao Cave in northern Spain, a region pertinent to studying the impacts of AMOC perturbations on south-western Europe. We explore the timing and impact of the 8.2 ka event on a decadal scale by coupling speleothem stable carbon and oxygen isotopic ratios, trace element ratios (Mg <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mo>/</mo></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="57ee8123d9c9aefcf23d9c7f6463c158"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cp-18-2321-2022-ie00001.svg" width="8pt" height="14pt" src="cp-18-2321-2022-ie00001.png"/></svg:svg> Ca and Sr <math xmlns="http://www.w3.org/1998/Math/MathML" id="M5" display="inline" overflow="scroll" dspmath="mathml"><mo>/</mo></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="93e47eb16cb371fe6916d3191efc4f1d"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cp-18-2321-2022-ie00002.svg" width="8pt" height="14pt" ... Text Greenland Greenland ice core ice core North Atlantic Copernicus Publications: E-Journals Greenland Climate of the Past 18 10 2321 2344 |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
The 8.2 ka event is regarded as the most prominent climate anomaly of the Holocene and is thought to have been triggered by a meltwater release to the North Atlantic that was of sufficient magnitude to disrupt the Atlantic Meridional Overturning Circulation (AMOC). It is most clearly captured in Greenland ice-core records, where it is reported as a cold and dry anomaly lasting ∼ 160 years, from 8.25 ± 0.05 until 8.09 ± 0.05 ka (Thomas et al., 2007). It is also recorded in several archives in the North Atlantic region; however, its interpreted timing, evolution and impacts vary significantly. This inconsistency is commonly attributed to poorly constrained chronologies and/or inadequately resolved time series. Here we present a high-resolution speleothem record of early Holocene palaeoclimate from El Soplao Cave in northern Spain, a region pertinent to studying the impacts of AMOC perturbations on south-western Europe. We explore the timing and impact of the 8.2 ka event on a decadal scale by coupling speleothem stable carbon and oxygen isotopic ratios, trace element ratios (Mg <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mo>/</mo></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="57ee8123d9c9aefcf23d9c7f6463c158"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cp-18-2321-2022-ie00001.svg" width="8pt" height="14pt" src="cp-18-2321-2022-ie00001.png"/></svg:svg> Ca and Sr <math xmlns="http://www.w3.org/1998/Math/MathML" id="M5" display="inline" overflow="scroll" dspmath="mathml"><mo>/</mo></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="93e47eb16cb371fe6916d3191efc4f1d"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cp-18-2321-2022-ie00002.svg" width="8pt" height="14pt" ... |
format |
Text |
author |
Kilhavn, Hege Couchoud, Isabelle Drysdale, Russell N. Rossi, Carlos Hellstrom, John Arnaud, Fabien Wong, Henri |
spellingShingle |
Kilhavn, Hege Couchoud, Isabelle Drysdale, Russell N. Rossi, Carlos Hellstrom, John Arnaud, Fabien Wong, Henri The 8.2 ka event in northern Spain: timing, structure and climatic impact from a multi-proxy speleothem record |
author_facet |
Kilhavn, Hege Couchoud, Isabelle Drysdale, Russell N. Rossi, Carlos Hellstrom, John Arnaud, Fabien Wong, Henri |
author_sort |
Kilhavn, Hege |
title |
The 8.2 ka event in northern Spain: timing, structure and climatic impact from a multi-proxy speleothem record |
title_short |
The 8.2 ka event in northern Spain: timing, structure and climatic impact from a multi-proxy speleothem record |
title_full |
The 8.2 ka event in northern Spain: timing, structure and climatic impact from a multi-proxy speleothem record |
title_fullStr |
The 8.2 ka event in northern Spain: timing, structure and climatic impact from a multi-proxy speleothem record |
title_full_unstemmed |
The 8.2 ka event in northern Spain: timing, structure and climatic impact from a multi-proxy speleothem record |
title_sort |
8.2 ka event in northern spain: timing, structure and climatic impact from a multi-proxy speleothem record |
publishDate |
2022 |
url |
https://doi.org/10.5194/cp-18-2321-2022 https://cp.copernicus.org/articles/18/2321/2022/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core ice core North Atlantic |
genre_facet |
Greenland Greenland ice core ice core North Atlantic |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-18-2321-2022 https://cp.copernicus.org/articles/18/2321/2022/ |
op_doi |
https://doi.org/10.5194/cp-18-2321-2022 |
container_title |
Climate of the Past |
container_volume |
18 |
container_issue |
10 |
container_start_page |
2321 |
op_container_end_page |
2344 |
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1766019923165839360 |