Research Projects

ENIGMA ITN is organized in several work packages around an overaching question : How to adapt subsurface imaging strategies to the processes of interest?

WP1 Explore coupled dynamic processes in highly instrumented sites

ESR 1 Mixing and chemical reaction hotspots in saline-freshwater mixing zones
ESR 2 Imaging flow dynamics and resulting reactivity in the transition zone between streams and riparian aquifers
ESR 3 Closing the observational gap between the hyporheic and meander scale
ESR 4 Flow and transport in fracture networks: reducing uncertainty of DFN models by conditioning to geology and geophysical data

WP2 Enhance our capacity to monitor temporal changes in the spatial distribution of subsurface water content and fluxes

ESR 5 Monitoring spatio-temporal water redistribution in the subsurface with seismic methods
ESR 6 Active Fiber-Optic DTS methods to monitor subsurface flow dynamics
ESR 7 Multi-scale thermal imaging of groundwater upwelling in stream valleys
ESR 8 Monitoring water storage changes with a new portable absolute quantum gravimeter

WP3 Create new methods for tracking the transport and reactivity of chemical species in subsurface fluids

ESR 9 Geophysical signatures of spreading and mixing
ESR 10 High resolution imaging of transport processes with GPR full-waveform inversion
ESR 11 Joint heat and solute tracer test inversion for imaging preferential pathways
ESR 12 Spectral induced polarization monitoring for in-situ quantification of biochemical reactions

WP4 Design inverse modelling strategies for imaging dynamic processes in complex subsurface structures

ESR 13 Fully coupled hydrogeophysical inversion of 3D tracer tomography using temporal moments and Ensemble Kalman Filtering
ESR 14 Geologically constrained joint inversion of hydraulic, tracer and ERT data for process visualization
ESR 15 Integration of dynamical hydrogeophysical data in a multiple-point geostatistical framework