Stephen Monna is a research scientist at INGV since 2002, with a degree in physics from the university of Rome "La Sapienza" and a Ph.D. in geophysics from the University of Hamburg. His scientific interests have been on studies of the Earth's crust and mantle, particularly in subduction zones. Modelling techniques used include local inversion methods for seismic tomography (body waves traveltime and attenuation) and global optimization methods for the inversion of receiver functions. Data come from both land and seafloor sensors. He is also interested in defining sources of seismic seafloor noise, in multiparameter studies related to geohazard with data collected by seafloor observatories, and the generation and propagation of seismo-acoustic waves in the Mediterranean. He was involved in several EU funded projects (e.g., ORION-GEOSTAR3, NEAREST, ESONET, MARSITE, INDIGO-DataCloud) and the European research infrastructure consortium EMSO-ERIC.