Study of vulnerable zones to soil instability by radar remote sensing, case of the Temsamane region in north Morocco

Abstract

The Temsamane massif is part of the external Rif of Morocco and is distinguished by more intense deformations, linked to its topographical, lithological and structural characteristics. Many natural hazard phenomena, and therefore damage and loss of resources and people, are present. The detailed work on these activities remains much localized using traditional techniques. The analysis using differential interferometry techniques of Synthetic Aperture Radar (SAR) images (DINSAR) made it possible to determine the instability and vulnerability to subsidence risks from two images from the Sentinel satellite of two different years (2018 and 2022). The results obtained show the presence of some areas of subsidence in the urban sector, the continuation of shrinkage and slight uplift in the relief areas, and generally instability in rural areas.