The thesis examines the change of water surfaces in the Cerknica field using satellite imagery over a multi-year period, in order to determine the distribution of water surfaces in the field and to determine the elevation of the water surface. Sentinel-2 and Landsat 8-9 imagery were used. Four different stages of the Cerknica lake were analysed by means of an infrared composite analysis, a vegetation analysis composite and the NDWI water index. The classifications based on these methods were used to determine the elevations of the water levels based on the digital elevation model. The main challenges of the analysis were the acquisition of good quality satellite images due to cloud cover, the distinction between water and vegetation and the different distribution of small water areas throughout the year. The task also touches on the definition of lake formation in different phases. The task has successfully achieved its objectives and has provided a detailed insight into the dynamics of the lake, which can contribute to the success of further research.
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