Atmospheric and Hydrospheric Sciences (A)
Session Sub-category Hydrology & Water Environment(HW)
Session ID A-HW30
Title Isotope Hydrology 2025
Short Title Isotope Hydrology 2025
Main Convener Name Masaya Yasuhara
Affiliation Rissho Univ.
Co-Convener 1 Name Takashi Nakamura
Affiliation International Research Center for River Basin Environment, University of YAMANASHI
Co-Convener 2 Name Koki Kashiwaya
Affiliation Graduate School of Engineering, Kyoto University
Co-Convener 3 Name Kazuyoshi Asai
Affiliation Geo Science Laboratory
Session Language 
J
Scope 
The purpose of the session is to review the present state of knowledge of isotope hydrology, by bringing together hydrologists, geologists, volcanologists, geochemists, agronomists, ecologists, engineers and so on.
Presentation Format Oral and Poster presentation
Invited Authors Fumitake Kusuhara (Central Research Institute of Electric Power Industry)
Tsuyoshi SHINTANI (Nationa Institute of Advanced Indutrial Science and Technology)
Mutsunori Yamamoto (Osaka Museum of Natural History)
Oliver S. Schilling (Hydrogeology, Department of Environmental Sciences, University of Basel, Switzerland)
Rofiqul Umam (Center for Research in Radiation, Isotopes, and Earth System Sciences, University of Tsukuba, Japan)
Time Presentation No Title Presenter
Oral Presentation May 30 AM1
9:00 - 9:25 AHW30-01 Case Study on Hydrogeological Structure of Accretionary Complex in Southern Nagano Prefecture Fumitake Kusuhara
9:25 - 9:50 AHW30-02 Geochemical characteristics of groundwater related with deep-seated fluid in Hokkaido Tsuyoshi SHINTANI
9:50 - 10:05 AHW30-03 Groundwater Contamination by Bird Droppings at Takashima Island in Kojima Bay, Okayama Prefecture Masaya Yasuhara
10:05 - 10:20 AHW30-04 Evolution of shallow urban groundwater chemistry in Meguro-dai, southeastern Musashino Upland, downtown Tokyo, Japan Yuki Itoh
Oral Presentation May 30 AM2
10:45 - 11:10 AHW30-05 Mechanisms of Water Quality Formation and the Influence of Volcanic Fluids on River Water, Lake Water, and Hot Spring Water in Shiretokoiozan Volcano and its surrounding area Mutsunori Yamamoto
11:10 - 11:25 AHW30-06 Developing a Hydrothermal Index based on geochemical properties of groundwater to Reveal Hidden Geothermal Signatures Mochamad Iqbal
11:25 - 11:50 AHW30-07 Dissolved (Noble) Gas Analyses as a Complement to Stable Water Isotopes for Snow and Ice Melt Identification in Groundwater Oliver S. Schilling
11:50 - 12:05 AHW30-08 Seasonal variation analysis of end-members composing Aso Caldera spring water using multiple tracers MORI Ueyama
Presentation No Title Presenter
Poster Presentation May 30 PM3
AHW30-P01 Spatial Distribution of Lithospheric-Meteoric Water Mixing Ratio of Non-Volcanic Hot Springs Water around Median Tectonic Line, Southwestern, Japan Rofiqul Umam
AHW30-P02 Analysis of a dam lake water flow using the seasonal fluctuation waveform of dissolved cesium-137 concentration Hideki Tsuji
AHW30-P03 Elucidation of the groundwater flow system in the Kumagawa River basin using multi-isotope tracers Sakuya Maruyama
AHW30-P04 Residence time of spring water on Mt. Haruna using multi-trancient tracer Kazuyoshi Asai
AHW30-P05 Identification of the process of water quality formation in surface water in the Minami-Alps region Tatsuki Kimura
AHW30-P06 Geochemical Study on Nitrogen Pollution of Surface and Groundwater in Arakawa River Fan, Saitama Prefecture, Japan Masaya Yasuhara
AHW30-P07 Estimation of the origin of nitrate-nitrogen in Lake Kawaguchi based on nitrogen and oxygen stable isotope ratios Shinya Yamamoto