気圏・水圏・地圏における陸水循環ならびにそれに伴う物質循環プロセスの解明を目的とした同位体水文学的研究は，現在，陸水学，地球化学，地形学，火山学，気象学，農学，林学，土木工学，衛生工学，生態学，土壌学等の多様な分野で行われている．本セッションでは，各分野における研究成果を持ち寄ることによって，同位体水文学研究の最新の知見の集積を図るとともに，異分野の活動を有機的・横断的に結びつけ，新しい同位体トレーサーの発見，新たな研究領域の開拓，社会への研究成果の還元を推進することを目的とする．一般水質や微量成分等に基づく研究でも，同位体を用いた水・物質循環研究に貢献あるいは発展する可能性のあるものであれば，これを歓迎する．

Isotope hydrology is currently being applied across diverse disciplines, 
including limnology, geochemistry, geomorphology, volcanology, 
meteorology, agriculture, forestry, civil engineering, sanitary 
engineering, ecology, and soil science, and it elucidates the 
terrestrial water cycle and associated material cycle in the atmosphere, 
hydrosphere, and lithosphere.
This session aims to share the latest results on isotope hydrology and 
links research activities across the different disciplines organically 
and transversally. Expected outcomes of this session are the discovery 
of new isotope tracers, the development of new research areas, and the 
return of research results to society.
Not limited to study that utilizes isotopes, presentations based on 
general water quality or trace elements are also welcomed if it has the 
potential to contribute to or extend to water and material cycle studies.