Seismotectonics in Northeastern France and neighboring regions

The region of northeastern France is affected by low-magnitude background seismicity, with the rare occurrence moderate earthquakes, which gives this a non-negligible seismic risk. We provide an overview seismicity and seismotectonics intraplate domain its sub-regions: Upper-Rhine Graben (URG), external range foreland Jura, Vosges, northern southern Belgium. Previously published catalogues over historical instrumental times are used, epicentral distribution earthquakes compared to known tectonic structures, recently computed deformation field. Although no large M w >6.0 occurred since 1356 Basel event (Io IX, MKS), recent identification active faults suggests periods high strain rates in past. origin activity each these sub-regions, characterized low very-low rates, attributed pre-existing reactivated under specific natural or anthropogenic conditions.