Geodetic upper crust deformation based on primary GNSS and INSAR data in the Strymon basin, Northern Greece—correlation with active faultsGeodetic upper crust deformation based on primary GNSS and INSAR data in the Strymon basin, Northern Greece—correlation with active faults Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2023-09-082022enThe Strymon basin (Northern Greece) belongs to the geodynamically active regime of the Aegean and, as expected, it hosts active faults. Nevertheless, the study area exhibits a low instrumentally and historically recorded seismicity. In order to comprehend the crustal deformation, we implemented GNSS- and InSAR-based techniques. Global Navigation Satellite System (GNSS) primary geodetic data recorded by 32 permanent stations over 7 years were analyzed and input in the triangulation methodology so as to calculate a series of deformational parameters. Moreover, a geostatistical methodology indicated the spatial distribution of each parameter, showing strain delimited up to 2750 × 10−9. These results are in broad agreement with palaeoseismological surveys and active fault mapping. Moreover, InSAR analysis, based on a 6-year data recording, concluded that no horizontal rates have been traced in the E–W direction; if they do exist, they would be below resolution (less than 2 mm/yr). Peak vertical subsidence values of a few mm/yr are traced towards the hanging wall of the Serres fault zone within the Quaternary sediments at the eastern margin of Strymon basin but are attributed mainly to groundwater extraction. However, it is noteworthy that geodetic strain analysis implies: (a) that a couple of areas need further study to trace potentially active faults by palaeoseismological means; (b) the fault trace of the Serres fault zone might be further prolonged 8–10 km eastwards, where Quaternary sediments cover the fault.http://creativecommons.org/licenses/by/4.0/Applied Sciences1218Lazos_et_al_Appl. Sci._12(18)_2022.pdfChania [Greece]Library of TUC2023-09-08application/pdf19.5 MBfree Lazos Ilias Λαζος Ηλιας Papanikolaou Ioannis Sboras Sotirios Foumelis Michael Pikridas Christos MDPI Upper crust deformation GNSS SAR Interferometry (InSAR) Active tectonics Strymon basin (Greece)