Seismic Tomography of the Algarve Crust: Previous studies, Campaign and first data

Abstract

The Local Earthquake Tomography of Algarve (Portugal), the main objective of this project, will permit produces detailed images of the Algarve crust lithosphere and the mantle in terms ofseismic body waves velocity variations (Teleseismic Tomography) or absolutes velocities (Local Earthquake Tomography, LET). Through the LET of Monchique-Portimiio and Louli-Faro we expect to obtain a more detailed understanding of the structure of the continental crust and provide a key for constrain the updip limit of the seismogenic zone in view to determine the earthquake source areas and active fault zones of the Monchique-Portimiio and Louli-Faro regions. The results will also contribute yet again to a better control of the seismic risk assessment of the region under research. The study was involved the installation of a Portable seismic network consisting of 30 shortperiod stations, including a subnet of7 telemetred stations, in operation since January 2006.