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Ramzaev, Valery; Mishine, Arkady; Basalaeva, Larisa; Brown, Justin (2009): 137Cs and 90Sr depositions, and 137Cs/90Sr ratios of samples from the Kraton-3 underground nuclear explosion site, Russia [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.786504, Supplement to: Ramzaev, V et al. (2007): Radiostrontium hot spot in the Russian Arctic: ground surface contamination by 90Sr at the 'Kraton-3' underground nuclear explosion site. Journal of Environmental Radioactivity, 95(2-3), 107-125, https://doi.org/10.1016/j.jenvrad.2007.02.004

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Published: 2009 (exact date unknown) • DOI registered: 2012-08-21

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Abstract:
Strontium-90 activity concentrations in surface soils and areal deposition densities have been studied at a site contaminated by an accidental release to atmosphere from the underground nuclear explosion 'Kraton-3' conducted near the Polar Circle (65.9°N, 112.3°E) within the territory of the former USSR in 1978. In 2001-2002, the ground surface contamination at 14 plots studied ranged from 20 to 15000 kBq/m**2, which significantly exceeds the value of 0.44 kBq/m**2 deduced for three background plots. The zone with substantial radiostrontium contamination extends, at least, 2.5 km in a north-easterly direction from the borehole. The average 137Cs/90Sr ratio in the ground contamination originated from the 'Kraton-3' fallout was estimated to be 0.55, which is significantly different from the ratio of 2.05 evaluated for background plots contaminated mostly from global fallout. Although vertical migration of 90Sr in all undisturbed soil profiles studied is more rapid than that for 137Cs, the depth of percolation of both radionuclides into the ground is mostly limited to the top 10-20 cm, which may be explained, primarily, by permafrost conditions. The horizontal migration rate of radiostrontium in the aqueous phase exceeds the radiocaesium migration rate by many times. This phenomenon seems to be a reason for the significant enrichment of the soil surface layers by radiostrontium at some sites, with variations occurring in accordance with small-scale irregularities of landscape.
Keyword(s):
ipy
Project(s):
International Polar Year (2007-2008) (IPY)
Coverage:
Median Latitude: 65.662000 * Median Longitude: 113.102667 * South-bound Latitude: 64.332000 * West-bound Longitude: 112.334000 * North-bound Latitude: 65.928000 * East-bound Longitude: 116.946000
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Ramzaev, V; Mishine, A; Basalaeva, L et al. (2009): (Table 1) 137Cs and 90Sr current ground depositions, and 137Cs/90Sr ratios for sites around the 'Kraton-3' area. https://doi.org/10.1594/PANGAEA.786501
  2. Ramzaev, V; Mishine, A; Basalaeva, L et al. (2009): (Table 3) Overview of 137Cs and 90Sr ground depositions, and 137Cs/90Sr ratios for sites around the 'Kraton-3' area. https://doi.org/10.1594/PANGAEA.786502
  3. Ramzaev, V; Mishine, A; Basalaeva, L et al. (2009): (Table 4) 137Cs and 90Sr activity concentrations in water samples from a stream near 'Kraton-3' between 2001-2002. https://doi.org/10.1594/PANGAEA.786503