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Effect of the eruptions of Mount St. Helens and El Chichon on the ratios of thorium and uranium isotopes in rain

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Abstract

Marked variations in the ratios of228Th/232Th,230Th/232Th and238U/232Th ratios were observed in rain samples collected at Fayetteville (36°N, 94°W), Arkansas, during 1980 through 1983. These variations are attributed to the fallout from the 1980 and 1982 eruptions of Mount St. Helens and El Chichón volcanoes.

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Authors and Affiliations

  1. Department of Chemistry, University of Arkansas, 72701, Fayetteville, Arkansas, USA

    P. K. Kuroda, T. Barbod & S. N. Bakhtiar

Authors
  1. P. K. Kuroda
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  2. T. Barbod
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  3. S. N. Bakhtiar
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Additional information

This investigation was supported by the National Science Foundation under Grant ATM 84-07618.

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Kuroda, P.K., Barbod, T. & Bakhtiar, S.N. Effect of the eruptions of Mount St. Helens and El Chichon on the ratios of thorium and uranium isotopes in rain. Journal of Radioanalytical and Nuclear Chemistry, Articles 111, 137–146 (1987). https://doi.org/10.1007/BF02060530

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  • DOI: https://doi.org/10.1007/BF02060530

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