Isotopic and related studies of Antarctic ice samples
Article
Received:
Revised:
- 18 Downloads
Abstract
The ice samples obtained from Dakshin Gangotri, Antarctica show the presence of nuclear debris, attributed mainly to French nuclear explosions. Cosmogenic7Be occurs at levels of 30 dpm/L. The vertical profile ofδD in 6 m long drill core ranges between −130 and −180‰ compared to Standard Mean Ocean Water (SMOW). No systematic change with depth is seen. Small amounts of dust obtained by filtering melt water show presence of metallic spherules. Absence of elements characteristic of meteoritic or cometary debris suggests that most of them are of volcanic or industrial origin.
Keywords
Antarctica radioactive fallout isotopic composition spherulesPreview
Unable to display preview. Download preview PDF.
References
- Bhandari N, Arnold J R and Parkin D W 1968J. Geophys. Res. 73 1837CrossRefGoogle Scholar
- Bhandari N, Nijampurkar V N and Shukla P N 1982Curr. Sci. 51 416Google Scholar
- Blanchard M B, Brownlee D E, Bunch T E, Hodge P W and Kyte F T 1980Earth Planet. Sci. Lett. 48 178CrossRefGoogle Scholar
- Dansgaard W 1964Tellus 16 436CrossRefGoogle Scholar
- Epstein S, Sharp R P and Gow A J 1965J. Geophys. Res. 70 1809CrossRefGoogle Scholar
- King E A and Wagstaff J 1981Antarctic J. 5 92Google Scholar
- Picciotto E, De Maere X and Friedman I 1960Nature (London) 187 857CrossRefGoogle Scholar
- Sipri Year Books 1968–79Cumulative index (1980)World armaments and disarmaments (London: Taylor and Francis) p. 90Google Scholar
- Wagstaff J and King E A 1981Lunar Planet. Sci. XII 1124Google Scholar
Copyright information
© Indian Academy of Sciences 1984