Fig. 1: Setting with aerial imagery, multibeam bathymetry obtained during this study and sample locations.

a Overview of the study area with the two studied bends and straight section in the meandering Lys River. Inset with indication of study area in Europe. b North Bend (NB) with location of the 5 sediment samples (pink dots). c South Bend (SB) with location of the 7 sediment samples (pink dots). d East Straight (ES) with location of the 6 sediment samples (pink dots). Bathymetric contours at 1 m. Map data: Google, ©2024 Maxar Technologies; imagery date: 21 July 2021.