Local source tomography: applications to Italian areas

We describe three study cases in which we used local earthquake and shot travel-time residuals to investigate the upper crustal structure of three regions in Italy. We inverted for velocity and hypocentral parameters using a damped least-squares technique making use of parameters (velocity and hypocentre) separation. The three studied regions are in Italy, namely (a) the Vulsinian Volcanic Complex (Latium), where there is an active geothermal field; (b) the Irpinia (Campania-Lucania) region, in the Southern Appennines, (c) the Friuli region, in Northeastern Italy. The computed shallow velocity models generally correspond with surface geological structures. -from Authors