Holmes, JA, Tindall, J orcid.org/0000-0002-2360-5761, Roberts, N et al. (9 more authors) (2016) Lake isotope records of the 8200-year cooling event in western Ireland: Comparison with model simulations. Quaternary Science Reviews, 131 (B). pp. 341-349. ISSN 0277-3791
Abstract
The early Holocene cooling, which occurred around 8200 calendar years before present, was a prominent abrupt event around the north Atlantic region. Here, we investigate the timing, duration, magnitude and regional coherence of the event as expressed in carbonate oxygen-isotope records from three lakes on northwest Europe's Atlantic margin in western Ireland, namely Loch Avolla, Loch Gealáin and Lough Corrib. An abrupt negative oxygen-isotope excursion lasted about 200 years. Comparison of records from three sites suggests that the excursion was primarily the result of a reduction of the oxygen-isotope values of precipitation, which was likely caused by lowered air temperatures, possibly coupled with a change in atmospheric circulation. Comparison of records from two of the lakes (Loch Avolla and Loch Gealáin), which have differing bathymetries, further suggests a reduction in evaporative loss of lake water during the cooling episode. Comparison of climate model experiments with lake-sediment isotope data indicates that effective moisture may have increased along this part of the northeast Atlantic seaboard during the 8200-year climatic event, as lower evaporation compensated for reduced precipitation.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | 8200-year event; Oxygen-isotopes; Isotope-enabled GCM; Early Holocene; Ireland |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Earth Surface Science Institute (ESSI) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 Oct 2015 13:34 |
Last Modified: | 23 Jun 2023 21:52 |
Published Version: | http://dx.doi.org/10.1016/j.quascirev.2015.06.027 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.quascirev.2015.06.027 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:89398 |