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Correlating recurrent radon precursors with local earthquake magnitude and crust strain near the Chihshang fault of eastern Taiwan

Author

Listed:
  • T. Kuo
  • C. Lin
  • C. Su
  • C. Liu
  • C. Lin
  • C. Chang
  • C. Chiang

Abstract

The active Chihshang fault in the southern segment of longitudinal valley of eastern Taiwan is part of the suture boundary between the Eurasia plate and the Philippine Sea plate. Radon anomalies in groundwater were recorded prior to three major earthquakes—(1) 2003 M w = 6.8 Chengkung, (2) 2006 M w = 6.1 Taitung, and (3) 2008 M w = 5.4 Antung. The epicenters were located 24, 52, and 13 km, respectively, from the radon-monitoring well (D1) in the Antung hot spring about 3 km southeast of the Chihshang fault. Prior to the three major earthquakes, radon decreased from background levels of 787 ± 42, 762 ± 57, and 700 ± 57 pCi/L to minima of 326 ± 9, 371 ± 9, and 480 ± 43 pCi/L, respectively. Based on the radon volatilization model and the rock dilatancy model, this paper correlates the observed radon minima with local earthquake magnitude and crust strain. The correlation is a useful means of forecasting local disastrous earthquakes in the southern segment of longitudinal valley of eastern Taiwan. Copyright Springer Science+Business Media B.V. 2011

Suggested Citation

  • T. Kuo & C. Lin & C. Su & C. Liu & C. Lin & C. Chang & C. Chiang, 2011. "Correlating recurrent radon precursors with local earthquake magnitude and crust strain near the Chihshang fault of eastern Taiwan," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 59(2), pages 861-869, November.
    • Handle: RePEc:spr:nathaz:v:59:y:2011:i:2:p:861-869
    DOI: 10.1007/s11069-011-9800-1
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    Cited by:

    1. Dawar Hama Khalid Mohammed & Fatih Külahcı & Ahmad Muhammed, 2021. "Determination of possible responses of Radon-222, magnetic effects, and total electron content to earthquakes on the North Anatolian Fault Zone, Turkiye: an ARIMA and Monte Carlo Simulation," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 108(3), pages 2493-2512, September.

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