Hierarchical cluster classification and analysis of cirques in Slovenian Alps

This paper presents a morphometry-based classification of cirques in Slovenia in the southeast European Alps. The classification was performed using a hierarchical cluster analysis and verified using ANOVA, Kruskal-Wallis, Watson’s U2 and Chi-square tests. 86 Slovenian cirques were categorized into five cirque types. Type 1, 2, 3 and 5 cirques indicate a formation by high-altitude (1800–2000 m) glaciers under varying conditions and on varied aspects (NNW, W, SE, E). Type 4 cirques indicate a formation by low-altitude (1500–1800 m) glaciers in areas of marginal glaciation on northeast aspects. This classification provides a rapid and consistent method of partitioning new cirque populations and offers a preliminary insight into the cirque population and palaeoclimate properties of Slovenia.