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Time-lapse monitoring of DNAPL in a controlled cell

We used multi component GPR data to perform time lapse measurements in a controlled experiment simulating DNAPL release. The DNAPL is well detected with parallel broadside y- and x- directed antenna and a perpendicular antennas y-directed source and an x-directed receiver, whereas the component acquired with perpendicular antenna x-directed source and y-directed receiver orientation is less effective. After 174 hours of the contamination injection and water flow activation, data still show pull up of reflections in correspondence of DNAPL injection.