Mapping the liquefaction hazard at different geographical scales

The zoning of a territory for liquefaction hazard at different geographical scales is one of the objectives of LIQUEFACT, the H2020 European project that initiated in May 2016 and will end in October 2019. The project also aims at addressing other aspects of liquefaction hazard and risk including the assessment and mitigation of damages to structures and infrastructures caused by earthquake-induced soil liquefaction. The University of Pavia and Eucentre lead Work Package 2, which deals with the zonation of a territory for liquefaction hazard at both continental and municipal or submunicipal scale. Indeed, the goal of WP2 is the definition of a European liquefaction hazard map (macrozonation) as well as the development of a methodology for the assessment of the liquefaction potential at an urban scale (microzonation). In a map of liquefaction hazard, the territory is subdivided into an appropriate number of homogeneous zones where the likelihood of earthquake-induced soil liquefaction is displaced according to a specified chromatic scale. This paper illustrates some of the achievements obtained in LIQUEFACT concerning the macrozonation of liquefaction hazard in Europe and the microzonation of a town in Northern Italy.