Fig. 2
From: An analysis of the entrainment effect of dry debris avalanches on loose bed materials
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40064-016-3272-4/MediaObjects/40064_2016_3272_Fig2_HTML.jpg)
Fragment materials used for the laboratory tests: a 40–80 mm; b 2–5 mm; c repose angle of the debris avalanche materials and d repose angle of the substrate materials