Introduction (3:30 PM - 3:35 PM)
Session information
[E] Oral
A (Atmospheric and Hydrospheric Sciences ) » A-HW Hydrology & Water Environment
[A-HW28] Tracer Hydrology: Advances in Measurement and Modelling
Wed. May 27, 2026 3:30 PM - 5:00 PM Exhibition Hall Special Setting (4) (Exhibition Hall 7&8, Makuhari Messe)
Chairperson:Schilling S. Oliver(Hydrogeology, Department of Environmental Sciences, University of Basel, Switzerland), Tsujimura Maki(Institute of Life and Environmental Sciences, University of Tsukuba), Tomonaga Yama(University of Basel), van Rooyen David Jared(Swiss Federal Institute of Aquatic Science and Technology)
Hydrological tracers rank among the most important tools in hydrology and hydrogeology. They improve our conceptual understanding of hydrological systems and support quantitative insights into water budgets, flow paths, groundwater recharge, groundwater-surface water interactions, hydrochemistry, geochemistry, ecohydrology and geomicrobiology. Recent advances in analytical techniques (e.g., high- frequency analyses of dissolved (noble)gases, stable water isotopes or microbial community compositions directly in the field, ultra low-level counting of rare noble gas radionuclides, or high-throughput sequencing of environmental DNA) now allow precise measurement of an unprecedented range of hydrologically important physical, chemical, and biological processes at spatial and temporal resolutions unthinkable just a few years ago. Moreover, owing to the recent surge in computational power and integrated models, we are finally enable to explicitly simulate the (reactive) transport of hydrological tracers throughout the entire hydrosphere. This session aims to showcase recent advances, innovations, and emerging methods in measuring, simulating, and interpreting hydrological tracers. In particular, it seeks to highlight multidisciplinary approaches that provide an improved conceptual and/or quantitative understanding of complex hydrological, hydrogeological and ecohydrological systems. Because acquisition of hydrological tracers also supports the decision-making process, the goal of this session also lies in demonstrating studies which helped improving water resources management and making the exploitation of our precious water resources more sustainable and adaptable to future anthropogenic and climatic perturbations.
3:35 PM - 3:55 PM
*Alexandre CAUQUOIN1, Maksym A Gusyev2, Hayoung Bong3, Atsushi Okazaki4, Kei Yoshimura1 (1. Institute of Industrial Science, The University of Tokyo, Kashiwa, Japan, 2. Institute of Environmental Radioactivity (IER), Fukushima University, Fukushima, Japan, 3. NASA Goddard Institute for Space Studies, New York, USA, 4. Institute for Advanced Academic Research/Center for Environmental Remote Sensing, Chiba University, Chiba, Japan)
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3:55 PM - 4:10 PM
*Maksym A Gusyev1, Alexandre Cauquoin2, Yuliiya Bezhenar1 (1. Institute of Environmental Radioactivity, Fukushima University, 2. Institute of Industrial Science (IIS), The University of Tokyo)
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4:10 PM - 4:25 PM
*Angela Ruth Welham1,2, Jared David van Rooyen1,2, Yama Tomonaga1, Rolf Kipfer2,3,4, Oliver S. Schilling1,2 (1. Hydrogeology, Department of Environmental Sciences, University of Basel, Switzerland, 2. Eawag, Department of Water Resources and Drinking Water, Switzerland , 3. Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Switzerland, 4. Institute of Geochemistry and Petrology, ETH Zürich, Switzerland)
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4:25 PM - 4:40 PM
*Ciaran J Harman1 (1. Johns Hopkins University)
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4:40 PM - 4:55 PM
*Taiga Suzuki1, Maki Tsujimura1, Mariko Saito2, Sumire Torimaru3, Jun Horigome4 (1. University of Tsukuba , 2. Suntory Holdings Ltd., 3. Asano Taiseikiso Engineering Co., Ltd., 4. Hitachi High-Tech)
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Discussion (4:55 PM - 5:00 PM)