Figure 2. Schematic cartoon showing the upstream migration of a knickpoint and the hypothesized transient responds of adjacent hillslopes. t0 – t3 represent four different time steps along a hypothetical stream reach. The adjacent hillslopes below the knickpoint first responds to the imposed base level fall though increases in hillslope gradient and relief. This is followed, presumably, by increases in the rate denudation (e.g. more frequent mass-wasting) that overtime acts to reduce slope gradient and relief.
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Nov10 11
