Satellite SAR interferometry for monitoring dam deformations: the case of Evinos dam, central Greece

Panagiotis Elias; Sotirios Valkaniotis; Athanassios Ganas; George Papathanassiou; Alexandra Bilia; Elisavet Kollia

doi:10.1117/12.2571954

26 August 2020 Satellite SAR interferometry for monitoring dam deformations: the case of Evinos dam, central Greece

Panagiotis Elias, Sotirios Valkaniotis, Athanassios Ganas, George Papathanassiou, Alexandra Bilia, Elisavet Kollia

Proceedings Volume 11524, Eighth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2020); 115241I (2020) https://doi.org/10.1117/12.2571954
Event: Eighth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2020), 2020, Paphos, Cyprus

Abstract

We used C-band data from the ESA satellites (ERS, ENVISAT and SENTINEL-1) to map ground motion patterns in the vicinity of Evinos dam in central Greece. The stability of the body of the dam was also examined. In the dam reservoir area, we obtained displacements up to 17 mm/year along the line of sight (LOS) in the vicinity of village Klepas (ENVISAT dataset; 2003- 2010). Several active landslides in the InSAR data were confirmed on the field (September 2017). Regarding the dam body, ENVISAT data show no significant deformation (less than 7 mm/year along the LOS). The SENTINEL-1 data (up to 2017) continue to show the same behaviour, however, a periodic signal and differential deformation on the dam body of the order of -8 mm/year along the LOS were detected and needs further investigation. We also mapped small ground motions inside several villages upstream the dam. A new landslide inventory for the dam upstream area was created from optical data.

Citation Download Citation

Panagiotis Elias, Sotirios Valkaniotis, Athanassios Ganas, George Papathanassiou, Alexandra Bilia, and Elisavet Kollia "Satellite SAR interferometry for monitoring dam deformations: the case of Evinos dam, central Greece", Proc. SPIE 11524, Eighth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2020), 115241I (26 August 2020); https://doi.org/10.1117/12.2571954

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KEYWORDS

Landslides

Satellites

Synthetic aperture radar

Interferometric synthetic aperture radar

Interferometry

Data processing

Signal detection

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