The study area for synthetic tests based on (a) the SARDINIA Experiment: triangles mark the real stations used (green), stations that malfunctioned (grey), and theoretical additional stations (red), black lines mark the airgun shot profiles, and a red line marks the theoretical additional shot profile, and (b) the AlpArray–LOBSTER Experiment: stations that recorded usable shots are marked by green triangles, and stations that were planned but did not record usable data or were collected before the shot profiles were complete are shown in orange, yellow lines denote the real shot profiles and red lines mark the suggested ideal shot profiles.