Commission Chairs


Tibor Stigter

Tibor Stigter is Sr. Lecturer in Hydrogeology and Groundwater Resources at the IHE Delft Institute for Water Education, in partnership with UNESCO. He has around 20 years of experience in groundwater hydrological research, training and capacity building and his main areas of expertise are: groundwater sustainability and vulnerability assessment, under influence of climate variability and climate change; use of hydrogeochemical, multivariate and geostatistical tools to assess groundwater-surface water-wetland interactions and contamination induced by agricultural practices. Tibor obtained an MSc degree in Physical Geography/Geographical Hydrology in 1997 at the Vrije Universiteit Amsterdam, and a PhD degree in Engineering Sciences (2005) from Instituto Superior Técnico  (IST-UTL).

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Jodie Miller

Jodie Miller is an Associate Professor in the Department of Earth Sciences at Stellenbosch University in South Africa. Although she started out in metamorphic petrology, these days she regards herself as an Earth Scientist with diverse research interests in isotope geochemistry and mineralogy, with a focus on isotope hydrology. She has around 10 years of experience in various projects across a broad spectrum of earth sciences including: groundwater sustainability and vulnerability assessment using isotope tracers;field mapping of complex geological terrains and their bearing on groundwater movement; using isotopes to track the interaction between surface water and groundwater. Prior to this, she worked on a variety of large regional mapping programs in Mozambique, Madagascar and Namibia.

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Dr. Jianyao Chen

Dr. Jianyao Chen is a Professor in Hydrology and Environment School of Geography and Planning at Sun Yatsen University. He is researching physical, chemical and microbiological aspects of hydrological process under environmental change and urbanization, focusing on groundwater dynamics by using isotopes. His current activities include: geochemistry/groundwater dynamics in Leizhou Peninsula and Lianzhou catchment; basin scale hydrological processes in Humid Area (Southern China; Hydro-environmental research in the Pearl River Delta.
Dr. Chen has over 30 years of research experience in a broad range of issues relating to agriculture water use, soil-plant-atmosphere continuum (SPAC), application of Geographic Information System (GIS) and remote sensing in hydrological modelling and nitrate pollution in groundwater.