Estimation of residence time and catchment area for spring water using radioactive isotope and groundwater flow model

Yoshinari Hiroshiro, Kenji Jinno, Atsushi Tsutsumi, Masataka Matsumoto, Ronny Berndtsson

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

Spring water, however, is often formed in complex geological formations and therefore it is difficult to determine the catchment area contributing to the flow. The Sayanokami spring, located in western part of Fukuoka City, Japan, is such a spring and an important water resource for the local agriculture. In order to better understand the hydrological properties of infiltration and groundwater processes for the spring water, 222Rn and tritium were used as tracers. Results showed that the residence time for the spring water is 10 - 20 years. A groundwater model confirmed these results and the travel time from the catchment border estimated to be about 25 years. Using this information the catchment border and uptake area were estimated. The method can be used to more efficiently determine catchment area and travel time for groundwater and thus to better manage the spring water.

本文言語英語
ページ(範囲)1-9
ページ数9
ジャーナルMemoirs of the Faculty of Engineering, Kyushu University
67
1
出版ステータス出版済み - 3 22 2007
外部発表はい

All Science Journal Classification (ASJC) codes

  • 地球惑星科学(全般)
  • 技術マネージメントおよび技術革新管理
  • 大気科学
  • エネルギー(全般)
  • プロセス化学およびプロセス工学

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