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The Holocene, Vol. 17, No. 2, 177-182 (2007)
DOI: 10.1177/0959683607075830
© 2007 SAGE Publications

A delayed climatic response to solar forcing at 2800 cal. BP: multiproxy evidence from three Irish peatlands

Graeme T. Swindles

School of Geography, Archaeology and Palaeoecology, Queen’s University, Belfast BT7 1NN, UK, g.swindles{at}qub.ac.uk

Gill Plunkett

School of Geography, Archaeology and Palaeoecology, Queen’s University, Belfast BT7 1NN, UK

Helen M. Roe

School of Geography, Archaeology and Palaeoecology, Queen’s University, Belfast BT7 1NN, UK

Multiproxy palaeohydrological records from three raised bogs in Northern Ireland indicate that a major shift to wetter/cooler climatic conditions postdated the rapid decrease in solar activity at 2800 cal. BP by ~100 years. This event is bracketed by two wiggle-match radiocarbon-dated cryptotephra layers in each profile, enabling a high degree of chronological precision. These replicated data corroborate previous findings based on Irish peat humification profiles, and may indicate spatial complexity in the climatic response to solar activity between oceanic and continental areas.

Key Words: Solar forcing • 2800 cal. BP event • raised bogs • tephra • multiproxy study • 14C production rate • palaeohydrology • palaeoclimate • Ireland • late Holocene


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