Abstract
Sediment cores from three lakes (Moss, Sombre and Heywood) in the maritime Antarctic (Signy Island, South Orkney Islands) have been successfully dated radiometrically by210Pb and137Cs. The core inventories of both fallout radionuclides are an order of magnitude higher than that which can be supported by the direct atmospheric flux at this latitude. The elevated values may be explained by fallout onto the catchment during the winter being delivered directly to the lakes during the annual thaw. Two of the lakes (Sombre and Heywood) show marked increases in sediment accumulation afterc. 1950. This appears to be associated with a documented rise in temperature in the South Orkney Islands, which has caused extensive deglaciation at Signy Island.
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References
Aaby, B. & B. E. Berglund, 1986. Characterisation of peat and lake deposits. In: Handbook of Palaeoecology and Palaeohydrology (ed. B. E. Berglund), Wiley: 231–246.
Appleby, P. G., P. Nolan, D. W. Gifford, M. J. Godfrey, F. Oldfield, N. J. Anderson & R. W. Battarbee, 1986.210Pb dating by low background gamma counting. Hydrobiologia 141: 21–27.
Appleby, P. G. & F. Oldfield, 1978. The calculation of210Pb dates assuming a constant rate of supply of unsupported210Pb to the sediment. Catena 5: 1–8.
Appleby, P. G. & F. Oldfield, 1983. The assessment of210Pb dates from sites with varying sediment accumulation rates. Hydrobiologia 103: 29–35.
Appleby, P. G. & F. Oldfield, 1992. Application of210Pb to sedimentation studies. In: Uranium-series Disequilibrium: Applications to Earth, Marine & Environmental Sciences (eds. M. Ivanovich & R. S. Harmon), Oxford University Press, Oxford: 731–778.
Appleby, P. G., N. Richardson & J. T. Smith, 1993. The use of radionuclides from Chernobyl and weapons test fallout for assessing the reliability of210Pb in dating very recent sediments. Verh. int. Ver. Limnol. 25: 266–269.
Björck, S., H. Håkansson, R. Zale, W. Karlén & B. L. Jönsson, 1991a. A late Holocene lake sediment sequence from Livingston Island, South Shetland Islands, with palaeoclimatic implications. Antarct. Sci. 3: 61–72.
Björck, S., C. Hjort, O. Ingólfsson & G. Skog, 1991b. Radiocarbon dates from the Antarctic Peninsula Region — problems and potential. Quat. Proc. 1: 55–65.
Cambray, R. S., K. Playford, G. N. J. Lewis & R. C. Carpenter, 1989. Radioactive fallout in air and rain: Results to the end of 1987. Harwell Report AERE R 13226, HMSO, London.
Chambers, M. J. G., 1966. Investigation of patterned ground at Signy Island, South Orkney Islands. II — Temperature regimes in the active layers. Br. Antarct. Surv. Bull. 10: 71–83.
Crozaz, G., E. Picciotto & W. De Breuck, 1964. Antarctic Snow Chronology with210Pb. J. Geophys. Res. 69: 2597–2604.
Ellis-Evans, J. C., 1982. Seasonal microbial activity in Antarctic freshwater lake sediments. Polar Biol. 1: 129–140.
Ellis-Evans, J. C., 1985. Decomposition processes in maritime Antarctic lakes. In: Antarctic Nutrient Cycles and Food Webs (eds. W. R. Siegfried, P. R. Candy & R. M. Laws), Springer-Verlag, Berlin & Heidelberg: 253–260.
Ellis-Evans, J. C. & D. Wynn-Williams, 1985. The interaction of soil and lake microflora at Signy Island. In: Antarctic Nutrient Cycles and Food Webs (eds. W. R. Siegfried, P. R. Candy & R. M. Laws), Springer-Verlag, Berlin & Heidelberg: 662–668.
Gillieson, D. S., 1991. An environmental history of two freshwater lakes in the Larsemann Hills, Antarctica. Hydrobiologia 214: 327–331.
Hardy, E. P., P. W. Krey & H. L. Volchok, 1973. Global inventory and distribution of fallout plutonium. Nature 241: 444–445.
Hawes, I., 1983. Nutrients and their effects on phytoplankton populations in lakes on Signy Island, Antarctica. Polar Biology 2: 115–126.
Heywood, R. B., H. J. G. Dartnall & J. Priddle, 1979. The freshwater lakes of Signy Island, South Orkney Islands, Antarctica. British Antarctic Survey Data 3: 46 pp.
Heywood, R. B., H. J. G. Dartnell & J. Priddle, 1980. Characteristics and classification of the lakes of Signy Island, South Orkney Islands, Antarctica Freshwat. Biol. 10: 47–59.
John, B. S. & D. E. Sugden, 1971. Raised marine features and phases of glaciation in the South Shetland Islands. Br. Antarct. Surv. Bull. 24: 42–111.
Koide, M., R. Michel, E. D. Goldberg, M. M. Herron & C. C. Langway, 1979. Depositional history of artificial radionuclides in the Ross ice shelf, Antarctica. Earth Planet. Sci. Lett. 44: 205–233.
Light, J. J., 1976. An unusual drainage system in an Antarctic valley. Br. Antarct. Surv. Bull. 43: 77–84.
Matthews, D. H. & D. H. Maling, 1967. The geology of the South Orkney Islands. I. Signy Island. Scientific Report, Falkland Island Dependency Survey 25: 32 pp.
Mäusbacher, R., J. Muller, M. Munnich & R. Schmidt, 1989. Evolution of postglacial sedimentation in Antarctic lakes (King George Island). Z. Geomorphol. N.F. 33: 219–234.
Nezami, M., G. Lambert, C. Lorius & J. Labeyrie, 1964. Mesure du taux d'accumulation de la neige au bord du continent antarctique par la méthode du plomb 210. C. r. Acad. Sci. Paris 259: 3319–3322.
Oldfield, F. & P. G. Appleby, 1984. Empirical testing of210Pb dating models for lake sediments. In: Lake sediments and environmental history (eds. E. Y. Haworth & J. W. G. Lund), Leic. Univ. Press, Leicester: 93–124.
Picciotto, E., R. Cameron, G. Crozaz, S. Deutsch & S. Wilgain, 1968. Determination of the rate of snow accumulation at the pole of relative inaccessibility, Eastern Antarctica: a comparison of glaciological and isotopic methods. J. Glaciol. 7: 273–287.
Picciotto, E., G. Crozaz & W. De Brueck, 1964. Rate of accumulation of snow at the South Pole as determined by radioactive measurements. Nature 203: 393–394.
Priddle, J., 1979. Morphology and adaptation of aquatic mosses in an Antarctic lake. J. Biol. 10: 517–529.
Priddle, J., 1985. Terrestrial Habitats — Inland Waters. In: Key Environments — Antarctica (eds. W. N. Bonner & D. W. H. Walton), Pergamon Press, Oxford.
Roos, P., E. Holm, R. B. R. Persson, A. Aarkrog & S. P. Nielsen, (in press). Deposition of210Pb,137Cs,239+240Pu and241Am in the Antarctic Peninsula area. J. envir. Radioact.
Schmidt, R., R. Mäusbacher & J. Muller, 1990. Holocene diatom flora and stratigraphy from sediment cores of two Antarctic lakes (King George Island). J. Paleolimnol. 3: 55–74.
Smith, R. I. L., 1988. Destruction of Antarctic terrestrial communities by a rapidly increasing fur seal population. Biol. Conserv. 45: 55–72.
Smith, R. I. L., 1990. Signy Island as a paradigm of biological and environmental change in Antarctic terrestrial ecosystems. In: Antarctic ecosystems — Ecological change and conservation, Proc. 5th Scar Symposium on Antarctic Biology (eds. K. R. Kerry & G. Harper), Springer Verlag, Berlin: 30–48.
Tatur, A. & R. del Valle, 1986. Badania paleolimnologicne i geomorfologicne na wyspie krola jerzego-Antarktyka zachodnia (1984–1986). Preglad Geologiczny 11: 621–626.
Windom, H. L., 1969. Atmospheric dust records in permanent snowfields: implications to marine sedimentation. Geol. Soc. Amer. Bull. 80: 761–782.
Zale, R. & W. Karlén, 1989. Lake sediment cores from the Antarctic Peninsula and surrounding islands. Geog. Ann. 71: 211–220.
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This is the tenth of a series of papers to be published by this journal following the 20th anniversary of the first application of210Pb dating of lake sediments. Dr P.G. Appleby is guest editing this series.
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Appleby, P.G., Jones, V.J. & Ellis-Evans, J.C. Radiometric dating of lake sediments from Signy Island (maritime Antarctic): evidence of recent climatic change. J Paleolimnol 13, 179–191 (1995). https://doi.org/10.1007/BF00678106
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DOI: https://doi.org/10.1007/BF00678106