Estimation of excess air component in groundwater by using dissolved Argon concentration

Kazumi Asai; Kazuyoshi Asai

Presentation information

[J] Poster

A (Atmospheric and Hydrospheric Sciences ) » A-HW Hydrology & Water Environment

[A-HW24] Isotope Hydrology 2019

Mon. May 27, 2019 3:30 PM - 5:00 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Masaya Yasuhara(Rissho Univ.), Kohei Kazahaya(Geological Survey of Japan, AIST), Shinji Ohsawa(Institute for Geothermal Sciences, Graduate School of Science, Kyoto University), Kazuyoshi Asai(Geo Science Laboratory)

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[AHW24-P10] Estimation of excess air component in groundwater by using dissolved Argon concentration

*Kazumi Asai¹, Kazuyoshi Asai¹ (1.Chikyukagakukenkyusho inc)

Keywords:excess air, dissolved argon, groundwater, SF6 dating, Central Japan

Estimation of excess air component in groudwater sample is vital for precise groundwater dating using SF₆. In this study, dissolved argon concentration was used for the estimation. We will report distriution of the excess air content in groudwater samples in central Japan, and discuss the impact for the SF6 dating.