Prof. Gerald Matisoff participated in the recent HYDRUS short course and workshop at the University of Life Sciences, Prague, Czech Republic.

While there, he presented the paper ‘Downward Migration of Chernobyl-derived Radionuclides in Soils in Poland and Sweden’. HYDRUS is a computer model used for the description of water flow and solute transport processes in the vadose zone. The model may be used to describe a variety of one- and multi-dimensional applications such as flow and transport into and through the vadose zone, infiltration from a subsurface source, and two dimensional leachate migration from a landfill through the unsaturated zone into groundwater. Recent model developments include the application to biogeochemical modeling with HP1 (a HYDRUS-PHREEQC coupled model) and the coupling of unsaturated zone and saturated zone modeling with the HYDRUS package for MODFLOW.