Influence of the runout potential on landslide-susceptible areas along the flysch–karst contact in Istria, Croatia

Sanja Dugonjić Jovančević () and Željko Arbanas
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Sanja Dugonjić Jovančević: University of Rijeka
Željko Arbanas: University of Rijeka

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2017, vol. 85, issue 3, No 3, 1347-1362

Abstract: Abstract The constant threat from landslides in the northeastern part of Istria, Croatia, calls for the need to apply accurate and reliable methods in landslide hazard assessment in order to prevent landslide damage and to set an early warning system if necessary. Furthermore, landslide susceptibility and hazard assessment enable optimal area management and regional urban planning. The study area is in the northeastern and central part of the Istrian Peninsula, well known as an area of frequent, small and shallow slope instability phenomena. Landslide susceptibility assessment in the area around the city of Buzet was performed using a deterministic landslide susceptibility model in the LS-RAPID software. LS-RAPID was developed to analyze stability at one single location, but the performed analysis has shown that LS-RAPID can be used as a powerful tool in landslide susceptibility and hazard assessment on regional scale. The objective of this paper is to establish the influence of the runout potential on the enlargement of the landslide-susceptible zones, due to expansion of the failure area around the initial failure zone. Performed analysis of rainfall return periods shows the frequency of landslide occurrence and provides the possible correlation with the time component of landslide hazard in the area.

Keywords: Landslide susceptibility; Deterministic analysis; Runout; Rainfall; Flysch (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1007/s11069-016-2640-2

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