Ověření výsledků statistického modelu náchylnosti k sesouvání v oblasti Chřibů a severní části Kyjovské pahorkatiny

Abstract

The aim of our work was to use a statistical model to determine the degree of susceptibility assessment in the area of the Chřiby Highland and northern part of the Kyjovská pahorkatina Hilly land and then compare the results with field verification of their actual occurrence in a part of this previously unmapped area. Studied part with a total area of 353,47 km2 is frequently affected by landslides (580 landslides covering 9 % of the area). The mapped area and the results comparing with the final landslide susceptibility map showed that more than 85 % of the mapped landslides are located in areas of high and very high landslide susceptibility. For locations that were not detected by this statistical method, but where landslides were nevertheless subsequently mapped, it was found that their origin was initiated by phenomena other than the input conditions used for the analysis. The results of the analysis were verified by field research of the territory, which had not previously been comprehensively mapped (south part of the model area). A total of 98 landslides were newly identified or revised, covering a total area of 4 km2, corresponding to 7.4 % of the area reconnaissanced.