globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2015.06.027
Scopus记录号: 2-s2.0-84949647393
论文题名:
Lake isotope records of the 8200-year cooling event in western Ireland: Comparison with model simulations
作者: Holmes J.A.; Tindall J.; Roberts N.; Marshall W.; Marshall J.D.; Bingham A.; Feeser I.; O'Connell M.; Atkinson T.; Jourdan A.-L.; March A.; Fisher E.H.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 131
起始页码: 341
结束页码: 349
语种: 英语
英文关键词: 8200-year event ; Early Holocene ; Ireland ; Isotope-enabled GCM ; Oxygen-isotopes
Scopus关键词: Climate models ; Lakes ; Oxygen ; 8200-year event ; Atmospheric circulation ; Early Holocene ; Ireland ; North East Atlantic ; Oxygen isotope records ; Oxygen isotope values ; Oxygen isotopes ; Isotopes ; climate variation ; comparative study ; computer simulation ; cooling ; evaporation ; Holocene ; isotopic analysis ; lacustrine deposit ; oxygen isotope ; paleoclimate ; precipitation (climatology) ; Ireland
英文摘要: 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. © 2015 The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59735
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作者单位: Environmental Change Research Centre, Department of Geography, University College London, Gower Street, London, United Kingdom; School of Earth and Environment, University of Leeds, Leeds, United Kingdom; School of Geography, Earth and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth, United Kingdom; Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom; Palaeoenvironmental Research Unit, School of Geography and Archaeology, National University of Ireland Galway, Galway, Ireland; Institut Für Ur- und Frühgeschichte Palynologisches Labor, Christian-Albrechts-Universität zu Kiel, Kiel, Germany; Department of Earth Sciences, University College London, Gower Street, London, United Kingdom; School of Geography, Queen Mary University of London, Mile End Road, London, United Kingdom

Recommended Citation:
Holmes J.A.,Tindall J.,Roberts N.,et al. Lake isotope records of the 8200-year cooling event in western Ireland: Comparison with model simulations[J]. Quaternary Science Reviews,2016-01-01,131
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