Figure 8

Slide A: Plot of the Campi Flegrei map with the indication of faults (blue lines) that overlap with the relocated swarms. The faults are taken by Vilardo et al.²⁹. The swarms are: 2000-yellow diamonds; 2012-black diamonds; 2015—Bordeaux filled triangles; 2018—black filled circles; 2019—red filled triangles; 2020—left oriented light blue triangles. Black dashed line indicate the vertical projection of the resistivity tomography reported in slide B. Slide A was obtained using the software Surfer 22 (https://www.goldensoftware.com/products/surfer). Slide B: resistivity model modified after Siniscalchi et al.³⁰ adding the relocated events (black dots), swarms (black stars) and low (< 1.7) and high (> 1.9) Vp/Vs areas (black contours and grey contours, respectively). With blue line we reported the faults deduced by Siniscalchi et al.³⁰ thanks to the resistivity image.