DInSAR is used to monitor the landslide behavior along the northern Black Sea coast of Bulgaria, and its applicability is investigated. The distribution maps and time transitions of the displacements were obtained over the period from 2014 to 2020. The results and applicability of this method are discussed by a comparison with the actual behavior described in the official reports of the Bulgarian Ministry of Regional Development and Public Works. This study suggests that DInSAR will be a useful tool for long-term continuous landslide monitoring over extensive areas, such as along the northern Black Sea coast.

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