P wave tomography of the mantle under the Alpine‐Mediterranean area

We study the upper mantle P wave velocity structure below the Euro‐Mediterranean area, down to 1000 km depth, by seismic travel time tomography. We invert summary residuals constructed with both regional and teleseismic first arrival data reported by the International Seismological Centre (ISC) (1964–1995), introducing some alternative strategies in the travel time tomographic approach and a new scheme to correct teleseismic data for global mantle structure. Our high‐resolution model PM0.5 is parameterized with three‐dimensional (3‐D) linear splines on a grid of nodes with 0.5° spacing in both horizontal directions and 50 km vertical spacing. We obtain about 26% root‐mean‐square (RMS) reduction of residuals by…