Mapping the Pollution Plume Using the Self-Potential Geophysical Method: Case of Oum Azza Landfill, Rabat, Morocco

The main landfill in the city of Rabat (Morocco) is based on sandy material containing shallow Mio-Pliocene aquifer. presence a pollution plume likely, but its extent not known. Measurements spontaneous potential (SP) from soil surface were cross-referenced with direct measurements water table and leachates (pH, redox potential, electrical conductivity) according to available accesses, as well an analysis landscape flows. With few precautions during data acquisition this resistive terrain, results made it possible separate electrokinetic (~30%) electrochemical (~70%) components responsible for range potentials observed (70 mV). detected hydrogeological downstream discharge, captured by natural drainage network does extend further under hills.