engleski

Continuous monitoring of the Kostanjek landslide

Landslide movements pose a substantial risk to people and infrastructure. Sometimes, in cases of complex or large volume landslides, monitoring and prediction are the only reliable and cost-efficient methods for the mitigation of the landside risk. This paper presents six years monitoring data series observed by the Kostanjek landslide monitoring system (Zagreb, Croatia). The Kostanjek landslide monitoring system consist of multiple sensor networks for continuous observations of external triggers, hydrological properties and displacements. The presented data are continuous displacement and groundwater level data measured at the central part of the landslide, while presented precipitation data are measured at the meteorological station Zagreb-Grič. During the period 2013-2018 the Kostanjek landslide experienced multiple reactivations, with maximal displacements up to 750 mm, with the highest velocities measured in the central part of landside. All reactivations are consequences of high groundwater levels. During the monitoring period the groundwater level changed from to 19 to 10.5 m. The cumulative precipitations that caused groundwater level to rise ranged from 21 mm to 180 mm, depending on the initial groundwater level. This data shows that the amount of precipitation necessary for landslide reactivation depends on the soil moisture above the groundwater level.

landslide, monitoring, precipitation, groundwater, displacement

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