A multiproxy climate record from a raised bog in County Fermanagh, Northern Ireland: A critical examination of the link between bog surface wetness and solar variability

Graeme T. Swindles*, Gill Plunkett, Helen M. Roe

*Corresponding author for this work

    Research output: Contribution to journalArticle

    54 Citations (Scopus)

    Abstract

    A proxy climate record from a raised bog in County Fermanagh, Northern Ireland, is presented. The record spans the interval between 2850 cal. yr BC and cal. yr AD 1000 and chronological control is achieved through the use of tephrochronology and 14C dating, including a wiggle-match on one section of the record. Palaeoclimatic inferences are based on a combination of a testate amoebae-derived water table reconstruction, peat humification and plant macrofossil analyses. This multiproxy approach enables proxy-specific effects to be identified. Major wet shifts are registered in the proxies at ca. 1510 cal. yr BC, 750 cal. yr BC and cal. yr AD 470. Smaller magnitude shifts to wetter conditions are also recorded at ca. 380 cal. yr BC, 150 cal. yr BC, cal. yr AD 180, and cal. yr AD 690. It is hypothesised that the wet shifts are not merely local events as they appear to be linked to wider climate deteriorations in northwest Europe. Harmonic analysis of the proxies illustrates statistically significant periodicities of 580, 423-373, 307 and 265 years that may be related to wider Holocene climate cycles. This paper illustrates how the timing of climate changes registered in peat profiles records can be precisely constrained using tephrochronology to examine possible climatic responses to solar forcing. Relying on interpolated chronologies with considerable dating uncertainty must be avoided if the climatic responses to forcing mechanisms are to be fully understood.

    Original languageEnglish
    Pages (from-to)667-679
    Number of pages13
    JournalJournal of Quaternary Science
    Volume22
    Issue number7
    DOIs
    Publication statusPublished - 01 Oct 2007

    Keywords

    • Holocene
    • Ireland
    • Multiproxy climate record
    • Raised bog
    • Solar forcing
    • Tephra

    ASJC Scopus subject areas

    • Arts and Humanities (miscellaneous)
    • Earth and Planetary Sciences (miscellaneous)
    • Palaeontology

    Fingerprint Dive into the research topics of 'A multiproxy climate record from a raised bog in County Fermanagh, Northern Ireland: A critical examination of the link between bog surface wetness and solar variability'. Together they form a unique fingerprint.

  • Cite this