Figure 1. a) Sketch of the pier-caisson system considered in this study; b) Top view of a local scour hole, with the contour lines indicating the depth – values are normalized with respect to the maximum depth (after [9]).

Figure 1. a) Sketch of the pier-caisson system considered
in this study; b) Top view of a local scour hole, with the
contour lines indicating the depth – values are
normalized with respect to the maximum depth (after
[9]).