Morfometrijska in prostorska analiza melišč v Kamniško-Savinjskih Alpah Morphometric and spatial analysis of talus slopes in Kamnik-Savinja Alps Namen magistrskega dela je bil preučiti prostorsko razporeditev, morfometrične značilnosti in spremembe površja melišč v osrednjem delu Kamniško-Savinjskih Alp. Na podlagi ortofoto posnetkov, lidarskih podatkov in fotogrametrično izdelanih digitalnih modelov višin iz letalskih posnetkov so bila melišča kartirana in razvrščena glede na njihovo obliko in način dovajanja materiala. Določene so bile njihove površine, nadmorske višine, višinske razlike, povprečni nakloni in prevladujoče usmerjenosti površja. Spremembe površja so bile analizirane z metodo razlike digitalnih modelov višin ob upoštevanju praga zaznave spremembe za obdobja 2011–2015, 2015–2017, 2017–2021 in 2021–2024. Obdobja zaznanih sprememb so bila primerjana z intenzivnimi padavinskimi dogodki, interpretacija izbranih območij pa je bila preverjena s terenskim pregledom. Na raziskovanem območju je bilo kartiranih 125 melišč, 8 hudourniških vršajev in 8 dolinskih jezikov. Kartirana melišča obsegajo 409,29 ha oziroma približno 6 % raziskovanega območja. Med njimi prevladujejo podstenska melišča, večja in bolj sklenjena pa se pojavljajo predvsem na severni strani pogorja. Najpogostejši sta severovzhodna in severna usmerjenost površja, povprečni nakloni posameznih melišč pa znašajo med 24,5° in 40,4°. Spremembe površja so bile zaznane pri 62 od skupno 141 obravnavanih akumulacijskih oblik. Največji obseg sprememb je bil ugotovljen v obdobju 2021–2024, ko so na več meliščih nastali večji erozijski kanali ter pahljačaste in jezičaste akumulacije. Časovno sovpadanje teh sprememb z ekstremnim padavinskim dogodkom 4. avgusta 2023 nakazuje, da je dogodek lahko prispeval k premeščanju sedimenta. Kombinirana souporaba veččasovnih prostorskih podatkov in terenske validacije je omogočila zanesljivo prepoznavanje večjih območij erozije in akumulacije. Glavne omejitve so predstavljali sneg, vegetacija in večletna obdobja med posameznimi snemanji, zaradi česar natančnega časa ter vzroka posameznih sprememb ni bilo mogoče vedno določiti. The aim of the master's thesis was to examine the spatial distribution, morphometric characteristics and surface changes of talus slopes in the central part of the Kamnik-Savinja Alps. Talus slopes were mapped and classified according to their morphology and sediment supply using orthophotos, LiDAR data and digital elevation models (DEM) produced photogrammetrically from aerial photographs. Their areas, elevations, elevation differences, mean slope angles and dominant aspects were determined. Surface changes were analysed using the DEM of Difference method (DoD) with a minimum level of detection for the periods 2011–2015, 2015–2017, 2017–2021 and 2021–2024. The periods of detected change were compared with intense rainfall events, while the interpretation of selected areas was verified through field surveys. A total of 125 talus slopes, 8 torrential fans and 8 debris tongues were mapped in the study area. The mapped talus slopes cover 409.29 ha, representing approximately 6 % of the study area. Talus aprons are the dominant type of talus slopes, while larger and more continuous talus slopes mainly occur on the northern side of the mountain range. Northeast and north-facing aspects are the most common, and the mean slope angles of individual talus slopes range from 24.5° to 40.4°. Surface changes were detected in 62 of the 141 studied depositional landforms. The greatest extent of change was identified in the period 2021–2024, when larger erosion channels, fan-shaped and tongue-shaped deposits developed on several talus slopes. The temporal coincidence of these changes with the extreme rainfall event of 4 August 2023 suggests that the event may have contributed to sediment transport. The combined use of multi-temporal spatial data and field validation enabled a reliable identification of larger areas of erosion and accumulation. The main limitations were snow, vegetation and multi-year intervals between surveys, which prevented the exact timing and cause of individual changes from always being determined. melišča Kamniško-Savinjske Alpe morfometrična analiza pobočni procesi razlika digitalnih modelov višin talus slopes morphometric analysis slope processes Kamnik-Savinja Alps DEM of Difference true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-09-25 09:00:35 2026-09-25 09:00:49 2026-09-25 09:00:51 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 1970-01-01 117831 31521.pdf 31521.pdf 1 c438d1f1-b8ae-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=248977 Naravoslovnotehniška fakulteta 0 0 0