A005 STRATEGIES FOR TIME-LAPSE ELECTRICAL RESISTIVITY INVERSION Summary 1 Time-lapse electrical measurements are becoming increasingly used to monitor changes induced by man-made or natural dynamic processes. To find the best strategy to invert time-lapse electrical data we tested and compared several inversion strategies found in the geophysical and biomedical literatures i.e. spatiotemporal regularization and difference inversion on synthetic data. Preliminary results show that the spatiotemporal regularization and difference inversion schemes have specific capabilities. The former method allows to better resolve absolute images compared to (spatial) smoothness-constraint inversion and difference inversion whereas the latter technique led to better results when looking


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