Fróðskaparrit - 01.01.1998, Qupperneq 155

UMSKIFTI í HOLOSENA VEÐURLAGNUM í NORÐURATLANTSØKINUM,
SUM TAÐ SÆST AV TORVMÝRUROYNDUM
161
more, a possible link between solar vari-
ability and peat bog records has been sug-
gested. A transect approach can be used to
test the following working hypothesis:
“Periodic latitudinal shifts in average
depression tracks over the North Atlantic
region have caused periodic, and some-
times abrupt, changes in mire surface
wetness, vegetation assemblages and
rate of peat decomposition over at least
the last 5,000 years ”
Furthermore, it may be suggested that a
component of such periodicity and abrupt
changes could be a result of changes in so-
lar output. This could be tested in turn by
attempting to correlate regional proxy cli-
mate records with long-term solar proxies
namely cosmogenic isotope concentrations
(Blackford and Chambers, 1995).
Acknowledgements
Dr. C. Caseldine, Prof. K.J. Edwards and Dr. A. Jen-
nings made useful comments on the oral version of this
paper. Thanks are due to Drs. D. Bloch, C. Caseldine
and P. Enckell for organising a stimulating discussion
meeting in Tórshavn.
References
Aaby, B. 1976. Cyclic climatic variations in climate
over the last 5,500 years reflected in raised bogs.
Nature 263: 281-284.
Alexander, R.W., Coxon, P. and Thom, R.H. 1986. A
bog flow at Straduff Townland, County Sligo. Pro-
ceedings ofthe Royal Irish Academy 86B: 107-119.
Anderson, D.E., Binney, H.A. and Smith, M.A. 1998.
Evidence for abmpt climate change in northem
Scotland between 3,900 and 3,500 calendar years
BP. The Holocene 8: 97-103.
Barber, K.E. 1981. Peat stratigraphy and climatic
change: a palaeoecological test of the theory of
cyclic peat bog regeneration. Rotterdam, Balkema.
Barber, K.E. 1982. Peat bog stratigraphy as a proxy cli-
mate record. In: Harding, A. (ed.). Climatic Change
in Later Prehistory. Edinburgh University Press.
103-113.
Barber, K.E., Chambers, F.M. Maddy, D. and Brew, J.
1994a. A sensitive high-resolution record of late-
Holocene climatic change from a raised bog in
northern England. The Holocene 4: 198-205.
Barber, K.E., Chambers, F.M., Dumayne, L., Haslam,
C.J., Maddy, D. and Stoneman, R.E. 1994b. Climat-
ic change and human impact in north Cumbria: Peat
stratigraphic and pollen evidence from Bolton Fell
Moss and Walton Moss. In: Boardman, J. and
Walden, J. (eds.). The Quaternary of Cumbria: field
guide. Oxford, QRA. 20-49.
Blackford, J.J. 1993. Peat bogs as sources of proxy cli-
mate data: past approaches and future research. In:
Chambers, F.M. (ed.). Climate change and human
impact on the Landscape. London, Chapman and
Hall. 47-56.
Blackford, J.J. 1997. Volcanic ash in Peat. In: Parkyn,
L., Stoneman, R.E. and Ingram, H.A.P. (eds.). Con-
serving Peatlands. CAB Intemational. 74-81.
Blackford, J.J. and Chambers, F.M. 1991. Proxy records
of climate from blamket peat: evidence for a dark
age (1400 BP) climatic deterioration in the British
Isles. The Holocene 1: 63-67.
Blackford, J.J. and Chambers, F.M. 1995. Proxy-cli-
mate recorđ for the last 1,000 years from Irish blan-
ket peat and a possible link to solar variability. Earth
and Planetary Science Letters 130:145-150.
Carling, P.A. 1986. Peat slides in Teesdale and
Weardale, Northern Pennines, July 1983: descrip-
tion and failure mechanisms. Earth Surface
Processes and Landforms 11:193-206.
Chambers, F.M., Barber, K.E., Maddy, D. and Brew, J.
1997. A 5500-year proxy-climate and vegetation
record from blanket mire at Talla Moss, Borders,
Scotland. The Holocene 7: 391-399.
Chambers, F.M., Blackford, J.J., and Ogle, M. (Forth-
coming) Palaeoenvironmental evidence for solar
forcing of Holocene climate: linkages to solar sci-
ence. Progress in Physical Geography.
Hoyt, D.V. and Schatten, K.H. 1997. The role of the sun
in climate change. New York, Oxford University
Press.
Kilian, M.R., van der Plicht, J. and van Geel, B. 1995.
Dating raised bogs: new aspects of AMS l4C wiggle
matching, a reservoir effect and climatic change.
Quatemary Science Reviews 14: 959-966.