Landslide inventory and characteristics, based on LiDAR scanning and optimised field investigations in the Kutina area, Croatia

• DOI: 10.4154/gc.2022.02
• Publication Date: 2022-03-01T08:42:28Z
• Authors: Davor Pollak; Nina Hećej; ; Anita Grizelj
• Keywords: Orthophoto; Coring; Field survey

This paper presents the preliminary results of analyses landsliding processes derived from detailed LiDAR (Light Detection and Ranging) scans supported by field prospection on south-western slopes Mt. Moslavačka gora, in wider Kutina area. area is known for frequent landslides, but dedicated regional landslide research has not been previously undertaken. High resolution scanning orthophoto imaging enabled production a reliable inventory, also properties morphology Field mapping prospection, sampling borehole coring assisted collection information about material characteristics specific features typical landslides. In area, which covers more than 71 km2, 1200 very small landslides were detected. The majority discovered just several geological units indicating their high susceptibility: Pleistocene silts sands with clayey interlayers, followed M2 silty gravels, M7 sands. Nearly half are estimated to be recent younger age, while other may considered as being historical implying “long tradition” events Preliminary terrain surface roughness analysis conclusion that inventory contains generations still detectable. addition slides (1123), this numerous earthflow (143), predominantly sandy units. largely located banks gullies directly related action water. Regarding situation engineering encountered units, four types bank instabilities can differentiated: top rock masses; firm soil mixtures; sands; coherent complexes.