Georadar data processing and imaging:paleoseismicity in the Piano di Castelluccio Basin, Central Italy

Robert J. Ferguson and Maurizio Ercoli and Alessandro Frigeri

ABSTRACT

Three georadar lines are presented in a comparison of conventional georadar processing flows and flows based on the gabordecon algorithm from the CREWES toolbox. The imaging goal is to map near-surface sediments above a Quaternary fault in the Piano di Castelluccio Basin in central Italy. There is a history of earthquake risk in this region and the georadar data were acquired for infrastructure planning as part of Probabilistic Seismic Hazard Assessment (PSHA) in Italy. The georadar data are used to tie reflection seismological fault images to the surface. We find that the gabordecon-based flow is significantly better than the conventional flow and this is likely due to Q compensation characteristics that are intrinsic to gabordecon.

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