Fig. 5
From: Self-sharpening induces jet-like structure in seafloor gravity currents
Velocity profiles. Vertical profiles of streamwise flow velocity, u, as a function of centred flow depth of the stoss-side (a), crest (b), lee-side (c) and trough components (d) of the three channel bedforms (e). In (a–d) the white lines denote least squares two-term linear-exponential curves of best fit (see methods), made above and below the velocity maximum; α denotes the vertical derivative of velocity, s−1, over the lowermost 2 m of the flow. In (a–e) symbol shading denotes the four components of each bedform, (a–d). In (e), the mean bed depth is depicted by the solid grey line; with dashed grey lines denoting a one standard deviation confidence interval. Within one standard deviation of the mean bed depth stoss-side and lee-side are defined by local slope; the trough and crest are defined by the regions outside of one standard deviation of the mean bed depth
