Fracture density analysis at Stromboli Volcano, Italy: implications to flank stability

Stromboli volcano has experienced four sector collapses over the past 13,000 years, resulting in formation of Sciara del Fuoco (SDF); a horseshoe-shaped flank collapse scarp where episodes instability are continuously observed and recorded. A NE / SW striking rift zone across SDF western island is inferred to be potential weakness for further episodes. This study reports new data fracture density using remote sensing imagery, within outside zone, identify areas damage that could reduce edifice strength promote fracturing. Pleiades satellite 0.5 m resolution was processed highlight 23635 distinct linear features, determine island, key macro-scale on volcano. These suggest including summit area slopes SDF, have an average between 1.18 – 2.73 × 10−5m−2 contrast rest 4.56 10−6m−2. Analysis also conducted orientation strikes volcanic by analysing specifically associated with intrusions fissures: NW SE SDF. Preliminary results show strike ranged from 030 047 NE/SW thus broadly parallel axis.