Advertisement

Ice accumulation rate in Changme-Khangpu glacier, Sikkim

  • P. N. Shukla
  • N. Bhandari
  • V. N. Nijampurkar
  • D. Kameswara Rao
  • V. M. K. Puri
  • Sanjiv Sharma
Article
  • 35 Downloads

Abstract

Vertical profiles of137Cs and210Pb 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 samples210Pb occurs at a level of 20 to 65 dpm/ L which is much higher than the expected fallout value.137Cs and210Pb activities correlate well with each other but not with the dust content. Possibility of210Pb production in the nuclear explosions is discussed. Several peaks appear in the depth profile of137Cs and210Pb 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.

Keywords

Glaciers bomb debris ice accumulation 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Bhandari N, Datta P S and Gupta S K 1978 inCurrent trends in arid zone hydrology (eds) S K Gupta and P Sharma (New Delhi: Today and Tomorrow’s Printers and Publishers) p. 127Google Scholar
  2. Bhandari N, Nijampurkar V N, Shukla P N and Puri V M K 1982aCurr. Sci. 51 416Google Scholar
  3. Bhandari N, Nijampurkar V N and Vohra C P 1982bVariations of the global water budget, Proc. Symp., Oxford, (eds) A Street-Perrott, M Beran and R Ratcliffe (D Reidel) p. 207Google Scholar
  4. Carter M W 1979Health Phys. 36 432Google Scholar
  5. Carter M W and Moghissi A A 1977Health Phys. 33 55CrossRefGoogle Scholar
  6. Crozaz G 1967 in Radioactive dating and methods of low level counting, IAEA, Vienna p. 385Google Scholar
  7. Gopalakrishnan S and Rangarajan C 1972J. Geophys. Res. 77 1012CrossRefGoogle Scholar
  8. Grotowski K, Kwiatkowski K and Jaworowski Z 1977 Report No. 984/ PL of Institute of Nuclear Physics, Krakow, 1–11Google Scholar
  9. Jaworowski Z, Kownacka L, Grotowski K and Kwiatkowski K 1978Nucl. Technol. 37 159Google Scholar
  10. Jaworowski Z, Kownacka L and Bysiek M 1979 inNatural radiation environment Proc. Symp. III. Houston, Texas, p. 28-1Google Scholar
  11. Koide M and Goldberg E D 1981Earth Planet. Sci. Lett. 54 239CrossRefGoogle Scholar
  12. Lambert G, Ardouin B, Sanak J, Lorius C and Pourchet M 1975Proc. Grenoble Symp. p. 146, IAHS-AISH Publication No. 118Google Scholar
  13. Merlivat L, Jouzel J, Robert J and Lorius G 1975Proc. Grenoble Symp. IAHS-AISH Publication No. 118, p. 138Google Scholar
  14. Nijampurkar V N, Bhandari N, Borole D V and Bhattacharya U 1981 PRL Report GLAC-81-03, AhmedabadGoogle Scholar
  15. Nijampurkar V N, Bhandari N, Krishnan V and Vohra C P 1982J. Glacial. 28 98Google Scholar
  16. Picciotto E, Crozaz G and de Breuck W 1964Nature (London) 203 398CrossRefGoogle Scholar
  17. Rangarajan C, Gopalakrishnan S and Vohra K G 1970J. Geophys. Res. 75 1753CrossRefGoogle Scholar
  18. Sadasivan S and Mishra U C 1982 PreprintGoogle Scholar
  19. World Armament and Disarmament, SIPRI Year Book, 1981, (London: Taylor and Francis), p. 382Google Scholar

Copyright information

© Indian Academy of Sciences 1983

Authors and Affiliations

  • P. N. Shukla
    • 1
  • N. Bhandari
    • 1
  • V. N. Nijampurkar
    • 1
  • D. Kameswara Rao
    • 1
  • V. M. K. Puri
    • 1
    • 2
  • Sanjiv Sharma
    • 1
    • 2
  1. 1.Physical Research LaboratoryAhmedabadIndia
  2. 2.Geological Survey of IndiaCalcuttaIndia

Personalised recommendations