Use of digital elevation model and rapideye satellite image to locate karst depressions and unroofed caves of Podgorski kras

ABSTRACT IN SLOVENE: Speleogeneza je proces nastajanja, razvoja in izginjanja jam. Zakljucni stadij razvoja jame imenujemo brezstropa jama. Proucevanje le-teh nam lahko pomaga pri razumevanju krasa in kraskih pojavov. Ker so brezstrope jame bodisi kotanje na povrsju ali le zaplate nekraskih sedimentov z bujnejsim rastjem, v clanku preucujemo moznosti kabinetnega prepoznavanja teh pojavov na podlagi njihovih morfometricnih lastnosti in spektralnih lastnosti vegetacije, ki jih prerasca. Raziskava je osredotocena na sirse obmocje Podgorskega krasa v jugozahodni Sloveniji. // ABSTRACT IN ENGLISH: Speleogenesis is the process of formation, development and disappearance of caves. The final stage in a cave development is called unroofed cave. The study of those features can help us understand karst landscape and karst phenomena. Since the unroofed caves are depressions on karst surface or just patches of non-karstic sediments with more vigorous vegetation, the study examines the possibility of their identification on the basis of morphometric characteristics and spectral properties of vegetation cover. The study is focused on a wider area of the Podgorski kras in southwestern Slovenia.