Ivrea seismic array: A study of continental crust and upper mantle

Apparent-velocity measurements from both local and regional earthquakes, and time-term analysis are used to estimate the velocity in the lower crust and in the upper mantle. The geometry of the upper-lower crust and Moho boundaries is determined from the station delay times.

A seismic-array study of the continental crust and upper mantle in the Ivrea-Verbano and Strona-Ceneri zones (northwestern Italy) is presented. A short-period network is used to define crustal P- and S-wave velocity models from earthquakes. The analysis of the seismic-refraction profile LOND of the CROP-ECORS project provided independent information and control on the array-data interpretation.