Comparison of Glacial Relief Landforms and the Factors Which Determine Glaciation in the Surroundings of Černé Jezero Lake and Čertovo Jezero Lake

Conditions for the Pleistocene glaciation in the regions of Černé Jezero and Čertovo Jezero lakes in the Šumava Mts. are analyzed in this paper, with a comparison of the resulting glacial landforms. Although the two cirques are immediate neighbours, have approximately the same area, altitude and relative vertical relief-dissection, their glacial erosion and accumulation relief segments exhibit many distinctive features. The most noticeable differences are slope gradient, slope aspect and overdeepening. The analysis revealed that increased heat load was more important for the extent of glaciation in the surroundings of Černé Jezero and Čertovo Jezero lakes than the surface area of deflation plateaus. This is evidenced by the small extent of glaciation in the surroundings of the Čertovo Jezero lake, which has unfavourable aspect and higher heat load index (HLI).