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Search Results: Records 1-8 displayed on this page of 8
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Journal Articles

Degassing behavior of noble gases from groundwater during groundwater sampling

Nakata, Kotaro*; Hasegawa, Takuma*; Solomon, D. K.*; Miyakawa, Kazuya; Tomioka, Yuichi*; Ota, Tomoko*; Matsumoto, Takuya*; Hama, Katsuhiro; Iwatsuki, Teruki; Ono, Masahiko*; et al.

Applied Geochemistry, 104, p.60 - 70, 2019/05

https://doi.org/10.1016/j.apgeochem.2019.03.007
 Times Cited Count：8 Percentile：42.1(Geochemistry & Geophysics)

no abstracts in English

JAEA Reports

None

Nemoto, K.*; Otagaki, Takao*; Shimoyoshi, Takuji*; *; Teshima, Tomoko*; Hisada, Tsukasa*; *

PNC TJ1250 93-002, 298 Pages, 1993/02

PNC-TJ1250-93-002.pdf:9.21MB

None

Oral presentation

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

no journal, , 

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.

Oral presentation

CRIEPI-JAEA collaboration study on mass transport by groundwater in and around the Mizunami Underground Research Laboratory

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

no journal, , 

no abstracts in English

Oral presentation

Groundwater dating conducted in Mizunami Underground Research Laboratory

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

no journal, , 

Groundwater dating was conducted to Mizunami Underground Research Laboratory (MIU). $$^{14}$$C age and $$^{4}$$He age were estimated about 20,000 years around MIU. The estimation of noble gas temperature is also conducted. The estimated recharge temperature is around 6$$^{circ}$$C. This temperature is about 9$$^{circ}$$C cooler than present annual average temperature, which agree with estimation of modern analog method conducted near MIU.

Oral presentation

Multiple groundwater dating conducted at Mizunami URL

Hasegawa, Takuma*; Nakata, Kotaro*; Tomioka, Yuichi*; Ota, Tomoko*; Okamoto, Shunichi*; Hama, Katsuhiro; Watanabe, Yusuke; Iwatsuki, Teruki

no journal, , 

no abstracts in English

Oral presentation

Intrusion ratio of modern meteoric water into groundwater at Mizunami granite area deduced by I-129

Ota, Tomoko*; Hasegawa, Takuma*; Okamoto, Shunichi*; Watanabe, Yusuke

no journal, , 

no abstracts in English

Oral presentation

Development of a methane-volume reduction method for $$^{81}$$Kr analysis and its application to deep groundwater

Nakata, Kotaro*; Hasegawa, Takuma*; Ota, Tomoko*; Jiang, W.*; Lu, Z. T.*; Miyakawa, Kazuya

no journal, , 

no abstracts in English

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