Fig. 1

Bathymetric map of Lake Constance including the location of the coring site (red dot, WGS84: 47.66813°/9.28686°), the traces of the three seismic profiles (airgun in red and pinger in black) crossing the coring site, and the paths of major inflowing streams in blue. The light-orange colored areas at the shore of the lake represent the terrestrial topographic lidar data with elevations > 0 m above the reference lake level of 395 m a.s.l. (Wessels et al., 2015). Grey shaded area is the Lidar-based land topography (Swisstopo). The inset in the upper right corner shows the location of the study site (red dot) in Central Europe, with the indicated surrounding countries