Self-Potential Studies in Volcanic Environments: A Cheap and Efficient Method for Multiscale Fluid-Flow Investigations

Figure 8

Conversion of the self-potential data (using previously acquired audio-magnetotelluric and water table data) into information on the elevation of the water table. Different colors represent different elevations of the bottom of the vadose zone in meters above sea level. Self-potential demonstrates that the underground topography of the Diego Hernandez caldera floor is a major controlling factor for the hydrogeology in this area. Figure from [76].