The application of photointerpretation for recognizing and estimating alluvial soils beds in the area of flysch in the Polish Carpathian Mts.

The very specific structure of mountain river terraces in the area of flysch in the Carpathian Mts. means, that the lowest terraces consist almost entirely of loose rocks (soils), when, at the same time higher terraces have in principle bipartite structure. The upper part of high terraces consists of cohesive soils, whereas the bottom (lower) part includes loose / non cohesive / soils. Taking into consideration this principle, and recognizing and contouring on the aerial photo the appropriate geomorphological form of a lower or higher terrace, the area of the bed can be established. In the paper a scheme is given in which the geomorphological characteristics and properties of beds situated in valleys and on adjacent slopes is given. The beds interpretated during laboratory photo-interpretation were then verified by field photo-interpretation (mapping) as well as with boreholes / in very limited number / in order to obtain the structure and thickness of the bed.