Fig. 5
From: Experiments on seepage-triggered cliff landslides using cohesive wet sand
Results of the \(h_{\mathrm{w}} = 2\) cm (run 4, \(H = 20\) cm, \(h_{\mathrm{w}} / H = 0.10\)), case in which 1 slide is triggered without a spread. 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 \(T_{\mathrm{slide}}\) (the onset of stage III; see text for details). See Fig. 4 legend for explanations of the red bar and blue \(\times\) on the left axis