Simulation 3.1 aimed to mimic natural cliffs of interbedded stratigraphy
by alternating 1m layers of material either 2×weaker or 2× stronger
(than the material strength of the homogenous cliff) up the cliff face.
This situation could correspond to layers of less resistant mudstone and
more resistant sandstone, respectively. The lower boundary position
ranged from −2 to +3 m relative to MSL as indicated on Fig. 12a,
which also outlines the final profiles for various rates of sea-level rise.
With a static sea-level, the influence of the anomalous material strength
on shore profile shape is visible until approximately +2 m MSL, which
corresponds to the boundaries of erosive sensitivity previously identified. As sea-level rises, the influence of the anomalous layers of
material strength up the cliff profile becomes apparent. This confirms
that the outcropping of layers in relation to MSL is a key control on recession
rates.