Authors: Pinglot, Jean Francis; Vaikmae, Rein A.; Kamiyama, Kokichi; Igarashi, Makoto; Fritzsche, Diedrich; Wilhelms, Frank; Koerner, Roy; Henderson, Lori; Isaksson, Elisabeth; Winther, Jan-Gunnar; Van De Wal, Roderik S.W.; Fournier, Marc; Bouisset, Patrick; Meijer, Harro A.J.

Source: Journal of Glaciology, Volume 49, Number 164, January 2003 , pp. 149-158(10)

Publisher: International Glaciological Society

Abstract:

The response of Arctic ice masses to climate change is studied using ice cores containing information on past climatic and environmental features. Interpretation of this information requires accurate chronological data. Absolute dating of ice cores from sub-polar Arctic glaciers is possible using well-known radioactive layers deposited by atmospheric nuclear tests (maximum fallout in 1963) and the Chernobyl accident (1986). Analysis of several isotopes (³H, ¹³⁷Cs) shows that 3H provides the most accurate dating of the 1963 maximum, as indicated also in comparison with results from total-beta measurements (⁹⁰Sr and ¹³⁷Cs).Mean annual net mass balances are derived from the dated ice cores from 1963 up to the date of the drillings.The ¹³⁷Cs and ³H deposited by nuclear tests, after decay correction, are used to define a melt index for all 13 ice cores studied. The relative strength of melting and percolation post-depositional processes is studied on the basis of these ¹³⁷Cs and ³H deposits.

Document Type: Research article

DOI: http://dx.doi.org/10.3189/172756503781830944

Publication date: 2003-01-01

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• By this author: Pinglot, Jean Francis ;  Vaikmae, Rein A. ;  Kamiyama, Kokichi ;  Igarashi, Makoto ;  Fritzsche, Diedrich ;  Wilhelms, Frank ;  Koerner, Roy ;  Henderson, Lori ;  Isaksson, Elisabeth ;  Winther, Jan-Gunnar ;  Van De Wal, Roderik S.W. ;  Fournier, Marc ;  Bouisset, Patrick ;  Meijer, Harro A.J.

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