Terrestrial impact of abrupt changes in the North Atlantic thermohaline circulation: Early Holocene, UK
Abrupt cooling events are features of Holocene climate and may recur in the future. We use lake records from Hawes Water, NW England, to quantify the impact of two prominent early Holocene climatic events. Subdecadal oxygen isotope records from sedimentary carbonate (18δOc), dated using thermal ioni...
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Geological Society of America
2007
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ftedgehilluniv:oai:repository.edgehill.ac.uk:1440 2023-05-15T16:27:41+02:00 Terrestrial impact of abrupt changes in the North Atlantic thermohaline circulation: Early Holocene, UK Marshall, J. Lang, B. Crowley, S. Weedon, G. Van Calsteren, P. Fisher, E. Holme, R. Holmes, J. Jones, R. Bedford, A. Brooks, S. Bloemendal, J. Kiriakoulakis, K. Ball, J. 2007-07 http://repository.edgehill.ac.uk/1440/ unknown Geological Society of America Marshall, J., Lang, B., Crowley, S., Weedon, G., Van Calsteren, P., Fisher, E., Holme, R., Holmes, J., Jones, R., Bedford, A., Brooks, S., Bloemendal, J., Kiriakoulakis, K. and Ball, J. (2007) Terrestrial impact of abrupt changes in the North Atlantic thermohaline circulation: Early Holocene, UK. Geology, 35 (7). pp. 639-642. ISSN 0091-7613 DOI https://doi.org/10.1130/G23498A.1 <https://doi.org/10.1130/G23498A.1> G Geography (General) GC Oceanography Article PeerReviewed 2007 ftedgehilluniv https://doi.org/10.1130/G23498A.1 2018-02-03T16:53:02Z Abrupt cooling events are features of Holocene climate and may recur in the future. We use lake records from Hawes Water, NW England, to quantify the impact of two prominent early Holocene climatic events. Subdecadal oxygen isotope records from sedimentary carbonate (18δOc), dated using thermal ionization mass spectrometry (TIMS) U-series analyses, provide evidence for abrupt cold events, lasting ∼50 and ∼150 yr at 9350 and 8380 yr ago, which correlate with the 9.3 ka and 8.2 ka events recognized in Greenland ice cores. At Hawes Water, mean July air temperatures, inferred from chirono-mid assemblages, decreased by ∼1.6 °C during each event. Calculations show that the isotopic excursions were dominantly caused by decreases in the isotopic composition of meteoric precipitation (18δOp) by ∼1.3‰; this is interpreted as a direct downstream response to cooling and freshening of northeast Atlantic surface water by melting ice sheets. Intermediate in magnitude between events observed in Greenland and central Europe, the effects are consistent with a partial shutdown of the North Atlantic thermohaline circulation. Article in Journal/Newspaper Greenland Greenland ice cores North Atlantic North atlantic Thermohaline circulation Northeast Atlantic Edge Hill University: Edge Hill Research Archive Greenland Geology 35 7 639 |
institution |
Open Polar |
collection |
Edge Hill University: Edge Hill Research Archive |
op_collection_id |
ftedgehilluniv |
language |
unknown |
topic |
G Geography (General) GC Oceanography |
spellingShingle |
G Geography (General) GC Oceanography Marshall, J. Lang, B. Crowley, S. Weedon, G. Van Calsteren, P. Fisher, E. Holme, R. Holmes, J. Jones, R. Bedford, A. Brooks, S. Bloemendal, J. Kiriakoulakis, K. Ball, J. Terrestrial impact of abrupt changes in the North Atlantic thermohaline circulation: Early Holocene, UK |
topic_facet |
G Geography (General) GC Oceanography |
description |
Abrupt cooling events are features of Holocene climate and may recur in the future. We use lake records from Hawes Water, NW England, to quantify the impact of two prominent early Holocene climatic events. Subdecadal oxygen isotope records from sedimentary carbonate (18δOc), dated using thermal ionization mass spectrometry (TIMS) U-series analyses, provide evidence for abrupt cold events, lasting ∼50 and ∼150 yr at 9350 and 8380 yr ago, which correlate with the 9.3 ka and 8.2 ka events recognized in Greenland ice cores. At Hawes Water, mean July air temperatures, inferred from chirono-mid assemblages, decreased by ∼1.6 °C during each event. Calculations show that the isotopic excursions were dominantly caused by decreases in the isotopic composition of meteoric precipitation (18δOp) by ∼1.3‰; this is interpreted as a direct downstream response to cooling and freshening of northeast Atlantic surface water by melting ice sheets. Intermediate in magnitude between events observed in Greenland and central Europe, the effects are consistent with a partial shutdown of the North Atlantic thermohaline circulation. |
format |
Article in Journal/Newspaper |
author |
Marshall, J. Lang, B. Crowley, S. Weedon, G. Van Calsteren, P. Fisher, E. Holme, R. Holmes, J. Jones, R. Bedford, A. Brooks, S. Bloemendal, J. Kiriakoulakis, K. Ball, J. |
author_facet |
Marshall, J. Lang, B. Crowley, S. Weedon, G. Van Calsteren, P. Fisher, E. Holme, R. Holmes, J. Jones, R. Bedford, A. Brooks, S. Bloemendal, J. Kiriakoulakis, K. Ball, J. |
author_sort |
Marshall, J. |
title |
Terrestrial impact of abrupt changes in the North Atlantic thermohaline circulation: Early Holocene, UK |
title_short |
Terrestrial impact of abrupt changes in the North Atlantic thermohaline circulation: Early Holocene, UK |
title_full |
Terrestrial impact of abrupt changes in the North Atlantic thermohaline circulation: Early Holocene, UK |
title_fullStr |
Terrestrial impact of abrupt changes in the North Atlantic thermohaline circulation: Early Holocene, UK |
title_full_unstemmed |
Terrestrial impact of abrupt changes in the North Atlantic thermohaline circulation: Early Holocene, UK |
title_sort |
terrestrial impact of abrupt changes in the north atlantic thermohaline circulation: early holocene, uk |
publisher |
Geological Society of America |
publishDate |
2007 |
url |
http://repository.edgehill.ac.uk/1440/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores North Atlantic North atlantic Thermohaline circulation Northeast Atlantic |
genre_facet |
Greenland Greenland ice cores North Atlantic North atlantic Thermohaline circulation Northeast Atlantic |
op_relation |
Marshall, J., Lang, B., Crowley, S., Weedon, G., Van Calsteren, P., Fisher, E., Holme, R., Holmes, J., Jones, R., Bedford, A., Brooks, S., Bloemendal, J., Kiriakoulakis, K. and Ball, J. (2007) Terrestrial impact of abrupt changes in the North Atlantic thermohaline circulation: Early Holocene, UK. Geology, 35 (7). pp. 639-642. ISSN 0091-7613 DOI https://doi.org/10.1130/G23498A.1 <https://doi.org/10.1130/G23498A.1> |
op_doi |
https://doi.org/10.1130/G23498A.1 |
container_title |
Geology |
container_volume |
35 |
container_issue |
7 |
container_start_page |
639 |
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1766017148406202368 |