A Stress Condition in Aquifer Rock for Detecting Anomalous Radon Decline Precursory to an Earthquake

Tom Ming-Ching Kuo, H. Kuochen, C. Ho, W. Chen

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Recurrent groundwater radon anomalous declines were observed from well measurements in the Antung hot spring area (eastern Taiwan) prior to five of six earthquakes that occurred between 2003 and 2011 (Mw range 5.0–6.8). The relationship between the detectability of radon anomalies and the first motions of P-waves was investigated. Based on the first motions of P-waves recorded near the investigated well, a precursory decrease in groundwater radon can be detected only when the first motion is compression. No precursory change in groundwater radon concentration was observed for the downward first motion of P-waves.

Original languageEnglish
Pages (from-to)1291-1301
Number of pages11
JournalPure and Applied Geophysics
Volume174
Issue number3
DOIs
Publication statusPublished - 2017 Mar 1

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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