Extended Data Fig. 7: Gaussian Mixture Model cluster analysis of the flat surfaces.
From: Extensive fluvial surfaces at the East Antarctic margin have modulated ice-sheet evolution
The morphology of each flat surface is quantified by its mean rebounded (ice-free) elevation and median local relief. (a) One-component (k = 1) mixture model, (b) Two-component (k = 2) mixture model, (c) Three-component (k = 3) mixture model, (d) Four-component (k = 4) mixture model. Circles represent the 31 flat surface fragments mapped in this study (colours correspond to geological provinces; see Extended Data Fig. 6). Contours represent the probability distribution of the Gaussian component(s) in each of the four mixture models. BIC = Bayes Information Criterion; a lower BIC indicates a better-fitting model (see Methods).
