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Tukey Control Chart for Radon Monitoring in Relation to the Seismic Activity

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  • Tahir Mehmood
  • Muhammad Awais

Abstract

Radon is one of the precursory phenomena that exist in connection to the occurrence of earthquakes and may have potential in forecasting these hazards. The data set in this study contains the observations of radon from August 01, 2014, to January 31, 2015, collected in Sobra city, northern Pakistan. Weibull, gamma, log-normal, log-logistic, and Pareto probability distribution were fitted over the radon on its original scale and a log scale. Log-logistic best fits the radon on both scales. The Tukey control charts reveal several anomalies that were compared with earthquake occurrence. There are five earthquakes that occurred during the same period as the radon monitoring program, having magnitude ranges between 4.9 and 5.5, with the ratio between strain radius and distance to the epicenter greater than or equal to 1. The results of this study demonstrate that, for earthquakes, seismic events show a correlation with increasing concentrations of radon gas before their occurrence.

Suggested Citation

  • Tahir Mehmood & Muhammad Awais, 2021. "Tukey Control Chart for Radon Monitoring in Relation to the Seismic Activity," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-8, May.
    • Handle: RePEc:hin:jnlmpe:9999500
    DOI: 10.1155/2021/9999500
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