Authors : Jacques Nakamwambila Kiadiamuyika; Evariste Kazadi Tshiamala; Eli-Achille Manwana Mfumukani; Pierre K. Kaseti

Volume/Issue : Volume 11 - 2026, Issue 8 - August

Google Scholar : https://tinyurl.com/4ye7tek8

DOI : https://doi.org/10.38124/ijisrt/26aug1445

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Abstract : This paper evaluates the integrity of radiometric observations collected across the Luisha mining area before those data are used for environmental interpretation or rehabilitation planning. Natural terrestrial radiation was measured along ten field profiles using a Geiger counter. Quality assessment combined descriptive statistics, geostatistical modelling and frequency-domain processing. Kriging was used to characterize spatial prediction uncertainty and to separate the survey area into zones of differing confidence according to station distribution. The histogram and normal Q-Q plot show an approximately Gaussian central population, although the upper tail remains positively skewed because of a small number of high readings. A low-pass FFT filter, implemented with a two-point window and a 0.25 Hz cutoff frequency, further improved the signal-to-noise ratio. After these checks and corrections, the dataset is considered suitable for subsequent radiometric mapping, interpretation and modelling.

Keywords : Natural Terrestrial Radioactivity; Radiometric Measurements; Quality Control; Geostatistics; Kriging; FFT.

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