The 1997-98 Umbria-Marche earthquake sequence: "Geological" vs. "seismological" faults

The 1997-98 Umbria-Marche earthquake provided a huge amount of good quality seismological data. The geology of the region has been extensively mapped for over a century by geologists from all over the world. The subsurface geology is constrained by a set of seismic reflection profiles and deep boreholes. acquired for oil exploration. The earthquake stimulated the acquisition of many other geological and geophysical data-sets (surface ruptures. structural analysis, geodetic data. geoeletrical data, etc.) As a consequence. the 1997-98 earthquake is one of the best case studies in the world for extensional earthquakes, driving the possibility of building up an integrated model of an extensional system.