22 November 2024

Time-Lapse Electrical Resistivity Tomography (TL-ERT) is a time-extension of the more conventional ERT method widely used in mapping near-surface processes. The ERT inverse problem is ill-posed and it is usually solved by gradient-based least square approach without a robust uncertainty appraisals. In this Webinar I will show you the stochastic Ensemble Smoother Multiple Data Assimilation algorithm (ES-MDA) that we Implemented to perform a Time- Lapse ERT inversion. This approach allows to simultaneously assess the initial resistivity model, the resistivity variation in time, and also the corresponding uncertainties. After a brief introduction I will show you the features of the implemented algorithm and the application to field dataset acquired by the Pillemark landfill monitoring station (Samsø, Denmark).

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