コンビーナ:小谷 亜由美(名古屋大学　生命農学研究科)、林 武司(秋田大学教育文化学部)、福士 圭介(金沢大学環日本海域環境研究センター)、田上 雅浩(東京大学大学院工学系研究科)

We focus on various issues of water cycle and environment and aim to answer questions of hydrological and earth system sciences; 1) surface, subsurface and evapotranspiration processes of water cycle, 2) natural and anthropogenic hydrothermal systems, 3) environments issues and studies on a watershed or global scale, 4) water-related issues with ecological, environmental, and geochemical aspects, and 5) other issues in hydrological sciences. We welcomes presentations regarding various kinds of approaches and techniques such as field survey, remote sensing, isotope tracers, numerical simulation, and theoretical analysis. This session is jointly hosed by societies of water-related geoscience (Geochemical Society of Japan, Japanese Association of Groundwater Hydrology, Japanese Association of Hydrological Sciences, and Japan Society of Hydrology and Water Resources), and accepts wide-range research topics related to water cycle and environment described above.