Tosaki's Homepage

Yuki Tosaki 
Hydrogeology Research Group,
Research Institute of Earthquake and Volcano Geology, Geological Survey of Japan,
National Institute of Advanced Industrial Science and Technology (AIST)
AIST Tsukuba Central 7, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8567, Japan
E-mail: yuki.tosaki (at)
last updated 2017.5.17

ReaD & Researchmap

  • 03/2003 B.Sc., College of Natural Sciences, University of Tsukuba
  • 03/2005 M.Sc., Master's Program in Environmental Sciences, University of Tsukuba
  • 05/2008 Ph.D., Doctoral Program in Geoenvironmental Sciences, University of Tsukuba
  • 06/2008 - 11/2008 Postdoctoral Researcher, University of Tsukuba
  • 12/2008 - 06/2010 Assistant Professor, University of Tsukuba
  • 07/2010 - 03/2015 Postdoctoral Researcher, Geological Survey of Japan, AIST
  • 04/2015 - Present Researcher, Geological Survey of Japan, AIST

Tosaki, Y., Morikawa, N., Kazahaya, K., Tsukamoto, H., Togo, Y.S., Sato, T., Takahashi, H.A., Takahashi, M. and Inamura, A. (2017): Deep incursion of seawater into the Hiroshima Granites during the Holocene transgression: Evidence from 36Cl age of saline groundwater in the Hiroshima area, Japan. Geochemical Journal, 51, 263-275. doi:10.2343/geochemj.2.0467 [Full text (Open access) ]

Tosaki, Y. and Asai, K. (2017): Groundwater ages in Mt. Fuji. Journal of Geography (Chigaku Zasshi), 126, 89-104 (in Japanese with English abstract). doi:10.5026/jgeography.126.89

Tosaki, Y., Tase, N., Sasa, K., Takahashi, T. and Nagashima, Y. (2012): Measurement of the 36Cl deposition flux in central Japan: Natural background levels and seasonal variability. Journal of Environmental Radioactivity, 106, 73-80. doi:10.1016/j.jenvrad.2011.11.010

Tosaki, Y., Tase, N., Sasa, K., Takahashi, T. and Nagashima, Y. (2011): Estimation of groundwater residence time using the 36Cl bomb pulse. Ground Water, 49, 891-902. doi:10.1111/j.1745-6584.2010.00795.x

Tosaki, Y., Tase, N., Kondoh, A., Sasa, K., Takahashi, T. and Nagashima, Y. (2011): Distribution of 36Cl in the Yoro River basin, central Japan, and its relation to the residence time of the regional groundwater flow system. Water, 3, 64-78. doi:10.3390/w3010064

Tosaki, Y., Massmann, G., Tase, N., Sasa, K., Takahashi, T., Matsushi, Y., Tamari, M., Nagashima, Y., Bessho, K. and Matsumura, H. (2010): Distribution of 36Cl/Cl in a river-recharged aquifer: Implications for the fallout rate of bomb-produced 36Cl. Nuclear Instruments and Methods in Physics Research B, 268, 1261-1264. doi:10.1016/j.nimb.2009.10.148

Tosaki, Y., Tase, N., Yasuhara, M., Nagashima, Y., Sasa, K. and Takahashi, T. (2008): An estimate of local bomb-produced 36Cl fallout using the depth profile of groundwater in the Tsukuba Upland, central Japan. Hydrological Research Letters, 2, 9-13. doi:10.3178/hrl.2.9

Tosaki, Y., Tase, N., Massmann, G., Nagashima, Y., Seki, R., Takahashi, T., Sasa, K., Sueki, K., Matsuhiro, T., Miura, T., Bessho, K., Matsumura, H. and He, M. (2007): Application of 36Cl as a dating tool for modern groundwater. Nuclear Instruments and Methods in Physics Research B, 259, 479-485. doi:10.1016/j.nimb.2007.02.096