In light of the above, simulation 1.3 investigated a range of resistant
layer locations moving in 1 m increments up the cliff face (−14 to +5
m relative to MSL; Table 2). In agreement with the findings of layer
thickness, the presence of this resistant layer did not begin to influence
the cliff toe position until the upper limit of its extent rose above−1m
MSL within the simulated time frame of 5 ka. Above −1 m MSL the resistant
layer influenced the cliff toe position more rapidly until the
upper limit was 3m above MSL, again in agreement with the boundaries
determined for layer thickness (but in this case with a constant layer
thickness of 5 m)