Transfrontier macroseismic studies of the Upper Rhine Graben ; Transfrontier macroseismic studies of the Upper Rhine Graben: Two recent earthquakes near Sierentz, France, in 2022 & 2023

International audience ; Comparative summary of the methods used to collect macroseismic data in France andBaden-Württemberg, Germany, and the results obtained in terms of macroseismic intensities forthese two recent transfrontier events.Transfrontier macroseismic studies of the Upper Rhine Graben In October 2022 and June 2023 two significant earthquakes took place near Sierentz (Dep. Haut-Rhin, France) with local magnitudes of 4.8 and 3.1 at the southern end of the Upper Rhine Graben. Especially the larger earthquake was not only felt within the graben, but also along the graben shoulders Vosges and Black Forest as well as their backlands.