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SAR interferometry for landslide investigation and surface deformation monitoring: a case study of Souk Ahras area, north-east of Algeria

Gueraidia Nour El Houda, Fehdi Chemseddine, Gueraidia Saida

Geomatics, Landmanagement and Landscape

2023

no. 2

37--55

Landslides – natural disasters be caused by various factors - are frequent in the region surrounding Souk Ahras. Comprehensive fieldwork, such as geotechnical drilling investigations and soil excavations, is conducted to monitor ground movements and assess the feasibility of geological locations. Synthetic Aperture Radar (SAR) and other active satellite remote sensors are utilized in Earth Observation-based systems to identify and track ground deformation and landslides in the study area. This research aims to illustrate how open-source processing software, SNAP, provided by the European Space Agency, can be combined with freely available datasets from Copernicus to accomplish this goal. In the North Eastern part of Algeria, which includes Souk Ahras, there is a high risk of landslides Through the use of InSAR technology, the research provided satisfactory results in identifying the morphology of landslides and generating a largescale interferometric map covering several regions in the East of Algeria, revealing the extent of distortion and spacing caused by the landslide phenomenon.

Application of synthetic aperture radar interferometry to monitor surface deformations of the Trans-European Transport Network (TEN-T) - a case study of the motorways crossing areas of mining operations in the Upper Silesian coal basin, Poland

Stawinoga Mariusz, Pindel Tomasz, Smoliński Adam

Journal of Sustainable Mining

2021

Vol. 20, iss. 3

136--143

Underground hard coal mining causes surface deformations. When the mining operations are conducted beneath linear objects, such as motorways, there is a risk of deformations of the axis of the road and its horizontal and vertical alignment (additional bends and vertical curvatures, longitudinal inclinations, deformations of cross-sections). In the areas subjected to mining operations, mining plants conduct geodetic monitoring. Due to their labour intensity and costs, geodetic measurements are usually made only a few times a year. The article discusses the possibility of applying Interferometric Synthetic Aperture Radar (InSAR) to monitor the subsidence of the vertical alignment of motorways caused by mining operations and its advantages and disadvantages compared to the currently used methods of geodetic measurements. The tests were conducted in two sections of motorways within the Upper Silesian Coal Basin (Poland) in the areas of intensive hard coal mining operations. Radar imaging of the surface made by the European Space Agency's (ESA) satellite Sentinel-1 equipped with the Synthetic Aperture Radar (SAR) was used.