Assessment of Seismic Bedrock in Deep Alluvial Plains. Case Studies from the Emilia-Romagna Plain

The estimation of seismic shaking is essential for a realistic assessment the local hazard and implementation effective strategies prevention mitigation risk. One most important aspects in analysis site recognition bedrock its depth. Unfortunately, these data are not always easy to evaluate, especially areas where thickness loose or poorly consolidated sediments high. This article illustrates case studies from Emilia-Romagna sector Po Plain, order provide examples suggestions alluvial coastal characterised by significant thicknesses unconsolidated sediments, using available expensive geophysical surveys. application proposed method indicates that study area can be divided into four domains characterized different depths bedrock: marginal pede-Apennine belt, high structural zones, syncline/minor anticline delta-coast zone.