Anomalous decrease in groundwater radon before the Taiwan M6.8 Chengkung earthquake

Tom Ming-Ching Kuo, K. Fan, H. Kuochen, Y. Han, H. Chu, Y. Lee

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41 Citations (Scopus)


On December 10, 2003, an earthquake of magnitude (M) 6.8, the strongest since 1951, occurred near the Chengkung area in eastern Taiwan. Approximately 65 d prior to the 2003 Chengkung earthquake, precursory changes in the groundwater radon concentration were observed at the Antung radon-monitoring station located 20 km from the epicenter. The radon anomaly was a decrease from a background level of 28.9 Bq L-1 to a minimum of 12.2 Bq L -1. Observations at the Antung hot spring suggest that the groundwater radon, when observed under suitable geological conditions, can be a sensitive tracer for strain changes in the crust preceding an earthquake.

Original languageEnglish
Pages (from-to)101-106
Number of pages6
JournalJournal of Environmental Radioactivity
Issue number1
Publication statusPublished - 2006 Apr 3

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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