engleski

Catalog of precipitation events that triggered landslides in northwestern Croatia

The study area of the Northwest Croatia encompasses six counties and the total area of 10.500 km2 with 44% of hilly areas, composed of Pleistocene and Neogene sediments, prone to precipitation induced landslides. Small superficial to moderately shallow landslides (landslide volume <105 m3 ; landslide depth <20 m) mostly cause damages to private houses, roads and infrastructure. This paper describes a catalogue of 66 precipitation events, which caused more than 1, 500 shallow landslides in NW part of Croatia in the period 2006–2014. Information on precipitation induced landslides was collected from newspapers and technical reports. Precipitation events that have resulted in one or more landslides, were interpreted in terms of precipitation duration D, cumulated precipitation E and the mean intensity I. To reconstruct triggering precipitation conditions, data from national meteorological station network was used. A comparison of precipitation series and landslides occurrence dates with global and regional ID thresholds showed that precipitation conditions exceeded threshold values and were likely to trigger a landslide. The results will be used for further study of the empirical threshold of landslides in the area of NW Croatia.

precipitation threshold ; landslides ; the Northwest Croatia

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