Coupled Hydrogeophysical Inversion Using Particle Filtering

We couple a hydrological and an ERT forward model to directly invert hydrological parameters from ERT measurements. A numerical experiment is presented of water infiltrating into the subsurface monitored by borehole electrodes. We use a particle filter to sequentially estimate the pdfs of hydrological state and parameters. The approach is able to retrieve estimates of the true values and represents a promising method for future applications.