Fig. 6
From: Experiments on seepage-triggered cliff landslides using cohesive wet sand
Results of \(h_{\mathrm{w}} = 8\) cm (run 14, \(H = 20\) cm, \(h_{\mathrm{w}} / H = 0.40\)) case in which 2 slides are triggered, followed by a spread (Additional file 2: Movie S2). a Images, and b time-series data of the sensor measurements (5-point running averaged). A blue \(\bigtriangleup\) is the seepage time \(T_\mathrm{seep}\). A green \(\bigcirc\) indicates the \(\Delta z\) (from which \(v_{\mathrm{z}}\) is obtained) that defines the slide time \(T_\mathrm{slide}\). See Fig. 4 legend for explanations of the red bar and blue \(\times\) on the left axis