@article{epos1710,
          volume = {41},
          number = {11},
           month = {June},
          author = {Ortensia Amoroso and Alessandra Ascione and Stefano Mazzoli and Jean Virieux and Aldo Zollo},
           title = {Seismic imaging of a fluid storage in the actively extending Apennine mountain belt, southern Italy},
       publisher = {American Geophysical Union},
            year = {2014},
         journal = {Geophysical Research Letters},
           pages = {3802--3809},
             url = {https://episodesplatform.eu/eprints/1710/},
        abstract = {A picture of the upper crustal structure of the Irpinia active faults system in southern Italy was obtained by combining new geological evidences, lithological properties, and microseismicity distribution. P and S wave velocity models indicate high VP/VS and low VP {$\times$} VS values, suggesting fluid accumulation within a {\texttt{\char126}}15 km wide rock volume where intense microseismicity is located. The 1980 Irpinia, Ms 6.9, earthquake nucleated within the same fault-bounded volume. We suggest that concentration of background seismicity is mainly controlled by high pore fluid pressure. Its increase in fluid-filled cracks around major faults leads to earthquakes' nucleation. Seismic pumping along major faults carries fluids through the conduit system represented by the intensely fractured damage zone. Conversely, the cross-fault barrier behaviour of the low-permeability fault core leads to pore fluid pressures building up within the fault-bounded block, thus producing a positive feedback triggering earthquake nucleation within the volume, which behaves as an ?earthquake reservoir.?}
}