Evaluation of natural recharge of Chingshui geothermal reservoir using tritium as a tracer

W. Cheng, Tom Ming-Ching Kuo, C. Su, C. Chen, K. Fan, H. Liang, Y. Han

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Naturally existing tritium in groundwater was applied as a tracer to evaluate the natural recharge of the Chingshui geothermal reservoir. The residence time (or, age) of Chingshui geothermal water was first determined with tritium data at 15.2 and 11.3 year using the plug flow and dispersive model, respectively. The annual natural recharge was then estimated by combining the use of the residence time and the fluid-in-place of the Chingshui geothermal reservoir. The natural recharge for Chingshui geothermal reservoir was estimated at 5.0 × 105 and 6.7 × 105 m3 year-1 using the plug flow and dispersive model, respectively. Chingshui geothermal water is largely from a fractured zone in the Jentse Member of the Miocene Lushan Formation. The dispersive model more adequately represents the fracture flow system than the simple plug flow model.

Original languageEnglish
Pages (from-to)110-117
Number of pages8
JournalRadiation Measurements
Volume45
Issue number1
DOIs
Publication statusPublished - 2010 Jan 1

All Science Journal Classification (ASJC) codes

  • Radiation
  • Instrumentation

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