Articles | Volume 20, issue 7
https://doi.org/10.5194/hess-20-3043-2016
https://doi.org/10.5194/hess-20-3043-2016
Research article
 | 
29 Jul 2016
Research article |  | 29 Jul 2016

Application of tritium in precipitation and baseflow in Japan: a case study of groundwater transit times and storage in Hokkaido watersheds

Maksym A. Gusyev, Uwe Morgenstern, Michael K. Stewart, Yusuke Yamazaki, Kazuhisa Kashiwaya, Terumasa Nishihara, Daisuke Kuribayashi, Hisaya Sawano, and Yoichi Iwami

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (Editor review) (18 Jun 2016) by Ying Fan
AR by Maksym Gusyev on behalf of the Authors (27 Jun 2016)  Author's response    Manuscript
ED: Publish as is (03 Jul 2016) by Ying Fan
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Short summary
Tritium-estimated groundwater mean transit times (MTTs) and storage volumes provide useful information for water resources management especially during droughts. In Hokkaido, we find that (1) one tritium measurement at baseflow is already sufficient to estimate MTT for some catchments, (2) the hydrogeological settings control tritium transit times of subsurface groundwater storage at baseflow, and (3) in future, one tritium measurement will be sufficient to estimate MTT in most Japanese catchments.