Fig. 2.

Comparison of boulder clustering and K-means clustering analysis for Mullins glacier and the site E LDA, Mars. Left plots show boulder distribution with distance down each landform (one dot per boulder), with clusters color-coded. Arrows show natural breaks in density from which preferred numbers of bands were determined. Right plots show BIC score and k*, the nominal number of bands per site. Preferred band numbers typically coincide with inflection points in BIC/n in K-means analysis shown on the right.