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

Figure 6

Plot of the time-lapse self-potential measurements performed at the coastline of Piton de la Fournaise. The upper graph shows self-potential data acquired in 2004 (green curve) and in 2006 (black curve) as well as the difference between both surveys (bottom black line). Recent lava flows are represented by colored bands located in the DEM figure (bottom right) adopting the same color coding. The figure is modified from [80].