Over the last decade, Prof. Weisbrod has focused his research on contaminant hydrology in general, and fracture flow and colloidal transport, in particular. He has focused on studies related to the mechanisms controlling colloid, nanoparticles and colloid-facilitated transport in the subsurface, under a variety of environmental conditions.
Another major research direction is related to the processes occurring within fractures and heterogeneous porous media in the vadose zone and their relation to evaporation, salinization and earth-atmosphere gas exchange, including the physics of GHG emission from soils.
A large portion of his current research focuses on unsaturated-zone conditions, where processes at the air-fluid-solid interface play an important role. Some of his recent projects involve the study of contaminant transport below industrial zones, infiltration ponds and non-point sources.
Processes occurring at the interface between fluids, phases and the fluid-matrix, as well as the transition between scales, are of special interest. Understanding transport phenomena in the subsurface usually requires micro-scale experimental work. Nevertheless, Prof. Weisbrod is trying to link his research to larger scale and field-scale processes.