Abstract
Land surface displacement caused by landslides is among the most damaging phenomena in northern Morocco. In this paper, we measure ground deformation in the Chefchaouen area which is a zone characterized by geological formations and structurally complex losses that promote instability (landslide, mudflow, block falls, etc.) leading to slow to extremely slow deformation phenomena, which require an interferometric study, using the DinSAR (differential interferometric synthetic Aperture Radar) technique with sentinel 1 images in bance C, which is a powerful tool for the detection and analysis of interferences and monitoring of ground deformations. We worked on four areas of the study area. Its points are provided by the direction of the roads, which generates Interferograms and then deformation maps with precision in mm/year.
Highlights
Landslides are among the geological hazards that are responsible for enormous human and natural losses (Lorenzo et al, 2020)
We measure ground deformation in the Chefchaouen area which is a zone characterized by geological formations and structurally complex losses that promote instability leading to slow to extremely slow deformation phenomena, which require an interferometric study, using the DinSAR technique with sentinel 1 images in bance C, which is a powerful tool for the detection and analysis of interferences and monitoring of ground deformations
The mountainous regions of Northern Morocco are characterized by high winter precipitation, responsible for a significant evolution of the slopes with the development of gravitational movements (GM), such as landslides, debris flows, collapses and intense gullies or badlands (BL) (Mastere, 2011)
Summary
Landslides are among the geological hazards that are responsible for enormous human and natural losses (Lorenzo et al, 2020). This paper focuses on landslide detection and mapping using the DInSAR (Interferometric SAR) technique with images from the Sentinel 1 satellite This Differential interferometric SAR is based on processing two single look complex interferometric wide images (SLC IW). The aim of this document is to map the landslide points (PK) in Stehat accurately, Talambote, Derdara, Eljebha with accuracies in mm/year obtained by the Road Directorate of the Chefchaouen region and to establish deformation maps. The objective of this document is to validate the application of the DInSAR processing chain to the monitoring of the slip point (PK) in Stehat, Talambote, Derdara, Eljebha with accuracies in mm/year obtained by the Road Directorate of the Chefchaouen region, using open access data and free tools of the Copernicus program. A DInSAR processing chain has been proposed and deformation maps have been elaborated and will be discussed in detail
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