Applicability of 87Sr/86Sr in examining return flow of irrigation water in highly agricultural watersheds in Japan

Takeo Yoshida1, Takanori Nakano2, Ki-Cheol Shin2, Takeo Tsuchihara1, Susumu Miyazu3 and Tomijiro Kubota1, (1)Institute for Rural Engineering, NARO, Tsukuba, Japan, (2)Research Institute for Humanity and Nature, Kyoto, Japan, (3)NARO National Agriculture and Food Research Organization, Ibaraki, Japan