An investigation of the change in surface roughness through time on the foreland of Austre Okstindbreen, North Norway

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Abstract

The roughness of the foreland of Austre Okstindbreen, North Norway is characterized at fifteen sites by its fractal dimension, calculated by the semivariance method applied to small-scale profile data collected in the field. The date of deposition of six of the sites is known from previous work undertaken by Peter Worsley and a relationship is established between age and roughness. Counterintuitively, the results show that through a 40 yr interval, at the scale investigated, the foreland becomes rougher as a result of subaerial processes, not smoother. It is concluded that there are factors other than time since deposition affecting the roughness of these surfaces.

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