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- Mauquoy, D., Engelkes, T., Groot, M. H. M., Markesteijn, F., Oudejans, M. G., van der Plicht, J. and van Geel, B.
(författare)
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High-resolution records of late-Holocene climate change and carbon accumulation in two north-west European ombrotrophic peat bogs
- 2002
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Ingår i: Palaeogeography, Palaeoclimatology, Palaeoecology. - : Elsevier. ; 186:3-4, s. 275-310
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Tidskriftsartikel (refereegranskat)
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- Van der Plicht, J, et al.
(författare)
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The Preboreal climate reversal and a subsequent solar-forced climate shift
- 2004
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Ingår i: Journal of Quaternary Science. - : Wiley. - 1099-1417 .- 0267-8179. ; 19:3, s. 263-269
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Tidskriftsartikel (refereegranskat)abstract
- Accurate chronologies are essential for linking palaeoclimate archives. Carbon-14 wiggle-match dating was used to produce an accurate chronology for part of an early Holocene peat sequence from the Borchert (The Netherlands). Following the Younger Dryas-Preboreal transition, two climatic shifts could be inferred. Around 11 400 cal. yr BP the expansion of birch (Betula) forest was interrupted by a dry continental phase with dominantly open grassland vegetation, coeval with the PBO (Preboreal Oscillation), as observed in the GRIP ice core. At 11 250 cal. yr BP a sudden shift to a humid climate occurred. This second change appears to be contemporaneous with: (i) a sharp increase of atmospheric C-14; (ii) a temporary decline of atmospheric CO2; and (iii) an increase in the GRIP Be-10 flux. The close correspondence with excursions of cosmogenic nuclides points to a decline in solar activity, which may have forced the changes in climate and vegetation at around 11 250 cal. yr BP. Copyright (C) 2004 John Wiley Sons, Ltd.
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