The DInSAR technique used is the Persistent Scatterers Interferometry (PSI), which relies on persistent reflectors and hence is a suitable method for the monitoring of urbanized areas. For this reason, this case study represents a good asset for the use of multi-temporal interferometry as a tool to prevent further damage in the area.
These reactivations produced damage to infrastructure and destruction of houses, and specific visible marks such as wall cracks, tilted trees, stabilizing infrastructure affected by bulging or cracking can be seen in the field as a consequence of mass movements. The study area considered in this work, the Municipality of Iaşi, is located in the north-eastern part of Romania and is characterized by slow-moving landslides with frequent reactivations, the most recent one of which took place in May 2017. In the case of urban areas, the use of DInSAR represents an extremely convenient and effective method to detect landslides induced displacements affecting buildings and infrastructure, allowing the authorities to intervene in the stabilization of critical areas and, in this way, to reduce the economic losses and the negative impact to the community. Sentinel-1), the reduced costs and the relatively short time necessary to perform the processing, make Differential SAR Interferometry (DInSAR) techniques an important tool that increase the possibilities to identify, characterize and monitor mass movements. ERS-1/2 and ENVISAT) and the free availability of data acquired by active satellites (e.g.
The open access to image archives of past missions (e.g. Recent advances of space-borne Synthetic Aperture Radar (SAR) sensors and the development of techniques in this domain made the interferometric approaches a very suitable and convenient way to analyze and monitor landslide behavior, especially for slow moving landslides.
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