Effects of crustal layering on the inversion of deformation and gravity data in volcanic areas: An application to the Campi Flegrei caldera, Italy

摘要: [1] We study the effects of crustal layering on ground displacements and gravity changes due to a spheroidal expanding source. Soft superficial layers affect deformation pattern (giving an apparent shallower source if is not taken into account), ratio horizontal vertical (biasing shape), subsurface mass redistribution changes. Retrieved intrusion density biased toward very low values modelled as penny-shaped crack (point finite) in homogeneous half-space resulting misestimate can lead possibly incorrect assessment volcanic hazard. As application, we consider 1982–1984 Campi Flegrei unrest. We show that large discrepancy between densities spherical sources, given literature obtained inverting displacement data half-space, at least partially consequence assumption.