Study of groundwater residence time in Mizunami Underground Research Laboratory

Hasegawa, Takuma*; Nakata, Kotaro*; Tomioka, Yuichi*; Ota, Tomoko*; Hama, Katsuhiro ; Iwatsuki, Teruki ; Kato, Toshihiro*; Hayashida, Kazuki

Groundwater dating using $^{14}$ C, $^{4}$ He, noble gas method was conducted in Mizunami Underground Research laboratory. The availability of degassing method for $^{14}$ , flux estimation method for He were examined. It was identified that the groundwater have been derived in glacial age. The integration of distinct dating method is available to estimate precise age of groundwater.

Language	:	Japanese
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Meeting title	:	日本地下水学会2017年秋季講演会
Held date	:	2017/10
Location (city)	:	弘前
Location (country)	:	日本
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Keywords	:	地下水; 年代測定; 希ガス
Research Facility	:	超深地層研究所
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Article of JAEA R&D Review	:
Cooperating Institute	:	電力中央研究所

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Registration No. : BB20170969
JAEA Abstracts No. :
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