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<p>This investigation evaluated natural gamma radiation to track sediment movement at two distinct sites within a Brazilian uranium mine undergoing decommissioning. Between 2023 and 2025, fieldwork was executed through four seasonal campaigns using portable gamma spectrometry. Data processing involved R programming, Excel, and GIS to generate interpolation maps and gamma count rate-weighted centroid maps. Contrary to the initial hypothesis that prevailing winds would shift sediments, the weighted radiation centroids showed minimal and inconsistent movement. The results strongly suggest that wind has a limited influence, while other environmental factors, such as precipitation and local geomorphology, may play a more significant role.</p>

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Exploring the use of natural radioactive isotopes to trace sediment dynamics in a uranium mining tailing

  • 期刊论文

  • 发表日期：

    2025年9月26日

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  • Lucas D. C. de Paula,
  • Rubens M. Moreira,
  • Cláudio J. Chagas,
  • Leila R. de Araújo

摘要

This investigation evaluated natural gamma radiation to track sediment movement at two distinct sites within a Brazilian uranium mine undergoing decommissioning. Between 2023 and 2025, fieldwork was executed through four seasonal campaigns using portable gamma spectrometry. Data processing involved R programming, Excel, and GIS to generate interpolation maps and gamma count rate-weighted centroid maps. Contrary to the initial hypothesis that prevailing winds would shift sediments, the weighted radiation centroids showed minimal and inconsistent movement. The results strongly suggest that wind has a limited influence, while other environmental factors, such as precipitation and local geomorphology, may play a more significant role.