Fig. 3
Distribution of normalized backscatter intensity for Chrüztrichter and Vitznau basins. Yellow labels mark examples of special features discussed in the text, dashed yellow lines outline zones affected by rockfalls (RB: “Bürgenstock rockfalls”; RO: “Obermatt rockfalls”; RL: “Lützelau rockfall”). Blue bars at the shoreline indicate positions of landing stages for passenger ships. Note the data artefacts (horizontal and vertical ship tracks, block boundaries) due to insufficient normalization