20.500.12556/DiRROS-15929 Composite landslide in the dynamic alpine conditions: a case study of Urbas landslide Sestavljeni plaz v dinamičnih alpiskih razmerah: primer plazu Urbas The alpine environment is characterized by complex geology, high-energy terrain, deeply incised river valleys with high erosional potential, extreme weather conditions and dynamic geomorphic processes. Such settings provide favourable conditions for the formation of composite landslides rather than individual slope mass movement phenomena. As an example, we present the kinematics of the composite landslide Urbas in the North of Slovenia which developed in the complex geological and morphological settings characteristic of the alpine environment. The research combines several monitoring techniques and involves the integration of both surface and subsurface displacements measured in the landslide area. The results indicate that the composite sliding process consists of several simultaneous and interrelated types of movements occurring in different segments of the unstable mass that are governed by different mechanisms of displacements, such as rockfall, sliding and debris flow. The kinematic characteristics of a deep-seated landslide that formed in such conditions vary spatially, but is rather homogenuous vertically, indicating translational type of movement. Spatial kinematic heterogeneity is primarily related to the diverse terrain topography, reflecting in different displacement trends. Based on the revealed kinematic proprieties of the sliding material, the sediment discharge illustrates the sliding material balance which estimates the volume of the retaining material that represents the potential for slope mass movement events of larger scales. Za alpsko okolje so značilni kompleksna geologija, razčlenjeno površje, globoko vrezane rečne doline z visokim erozijskim potencialom, ekstremne vremenske razmere in dinamični geomorfni procesi. Takšne razmere so, bolj kakor za nastanek posameznih pojavov pobočnih premikov, prikladne za razvoj sestavljenih plazov. Kot primer takšnega pojava predstavljamo primer sestavljenega plazu Urbas, ki se nahaja v severnem delu Slovenije in je nastal v zapletenih geoloških in morfoloških razmerah značilnih za alpsko okolje. V raziskavi združujemo več tehnik spremljanja plazov in povezujemo izmerjene površinske premike in premike na območju drsne ploskve. Rezultati kažejo, da proces sestavljenega plazenja vključuje več medsebojno povezanih tipov premikov, ki se, z različnimi mehanizmi premikanja (podor, plazenje, drobirski tok), istočasno odvijajo v različnih delih premikajoče se gmote. Kinematične značilnosti globokega plazu, ki je nastal v takšnih razmerah, se spreminjajo prostorsko, po globini pa so precej homogene, kar nakazuje na translacijski tip premikanja plazu. Prostorska kinematična heterogenost pa je v prvi vrsti posledica oblikovanosti površja, ki se odraža v različnih hitrostih premikov. Na podlagi ugotovljenih kinematičnih lastnosti plazečega materiala smo s pomočjo računanja prehajanja sedimenta ponazorili bilanco plazeče se mase in ocenili prostornino materiala, ki zastaja na območju plazu in ki predstavlja potencial za pojav pobočnih masnih premikov večjih razsežnosti. composite landslide alpine conditions kinematics monitoring sediment discharge sestavljeni plaz alpske razmere kinematika monitoring prehajanje sedimenta true false true Geološki zavod Slovenije Angleški jezik Slovenski jezik Neznano 2022-12-15 03:36:05 2022-12-15 15:29:49 2023-01-06 10:14:25 0000-00-00 00:00:00 2022 0 0 str. 161-175 no. 2 vol. 65 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-12-12 504.4 0016-7789 10.5474/geologija.2022.010 133822467 1840-Article_Text-12342410-1-10-20221212.pdf 1840-Article_Text-12342410-1-10-20221212.pdf 1 3620A7F28DBA2130CF7AA6E319CCA467 cad25f6cdf1d5a9eaf00fcd4437b9394fac22da9850ee2fba4d09fefa07b3daf e6df7a25-7c7c-11ed-8925-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21107 Geološki zavod Slovenije Geologija 0 0 0