Geophysical data, and their integration with hydro-biogeochemical point-scale measurements, are key to quantifying the subsurface structure and characteristics with relevant spatial resolution and coverage as well as for imaging the spatiotemporal distribution of water and solute properties. The Environmental Geophysics group develops and applies novel strategies to estimate properties and processes in the subsurface, and their interaction with above-ground processes, using a variety of geophysical techniques, including complex electrical conductivity tomography, electromagnetic induction methods, ground-penetrating radar, and well logging. These datasets are integrated into physical models and/or with point-scale measurements to help improve understanding and quantification of subsurface hydro-biogeochemical processes. Further, by coupling below-ground investigation with remote- sensing data, we improve the understanding of interactions between above- and below-ground properties critical to predictive understanding of ecosystem functioning and for potentially scaling results from intensive site to larger spatial coverage. These strategies enabled new understanding of subsurface processes in various environments, including imaging of dissolved CO2 plumes and related geochemical concentrations in freshwater aquifers, mapping biogeochemical hotspot in alluvial deposits, quantification of active layer and permafrost distribution and ice-content, and estimation of hydraulic and thermal parameters through joint geophysical and hydrological inverse modelling.
Our Core Expertise and Capabilities
Novel Sensors and Sensor Networks
Geophysical Inversion and Parameter Estimation
Machine Learning and Artificial Intelligence