Ice accumulation rate in Changme-Khangpu glacier, Sikkim

Shukla, P. N. ; Bhandari, N. ; Nijampurkar, V. N. ; Kameswara Rao, D. ; Puri, V. M. K. ; Sharma, Sanjiv (1983) Ice accumulation rate in Changme-Khangpu glacier, Sikkim Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 92 (3). pp. 255-260. ISSN 0253-4126

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Vertical profiles of 137Cs and 210Pb have been determined in a 9 m column of ice from accumulation zone of Changme-Khangpu glacier in north Sikkim valley. 137Cs activity varies from 4 to 22 dpm/ L. In many samples 210Pb occurs at a level of 20 to 65 dpm/ L which is much higher than the expected fallout value. 137Cs and 210Pb activities correlate well with each other but not with the dust content. Possibility of 210Pb production in the nuclear explosions is discussed. Several peaks appear in the depth profile of 137Cs and 210Pb which can be matched with Chinese atmospheric nuclear explosions with some phase difference if a uniform ice accumulation rate of 0.7 m per year is assumed since 1969.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Glaciers; Bomb debris; Ice accumulation
ID Code:18495
Deposited On:17 Nov 2010 09:09
Last Modified:17 May 2016 03:12

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