This process was observed by analysing the relief of multitemporal digital elevation models, differential models, AND morphological sections and by conducting long-term field observations. The cliff was found to become significantly an active in 2010. ALS differential models were the sources of new information about the dynamics of vertical displacement in the landslide and helped calculate the volume of displaced rock masses that occurred over 12 years. Multitemporal ALS data were used to determine the geomorphological changes within the cliff and find the causes of the rapid rate of cliff edge landslides. Two methods, ALS (Airborne Laser Scanning) and ERT (Electrical Resistivity Tomography), were used for this purpose. The aim of these studies was to determine the dynamics of displacements in an active landslide and to identify the geology of the cliff. The cliff in Jastrzębia Góra is one of the most an active landslide areas along the Polish Baltic coast.
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