Subsidence and Deformation Phenomena in the Vicinity of Thessaloniki (N.Greece) Monitored by Envisat/ASAR Interferometry
Abstract
Part of the 2500-year old Thessaloniki coastal plain, the broader area of Kalohori, located at the extension of the western end of the city of Thessaloniki (Northern Greece), has been dominated by subsidence phenomena for several decades.This study involves InSAR data processing carried out via the ROI_PAC software, in order to monitor the rate and extent of this on-going subsidence, which occurs at velocities in the order of a few cm/yr. Using 19 ENVISAT/ASAR images spanning the 2002-2007 period, 117 interferograms were computed and enhanced, by estimating coherence over space and time and by applying different filtering strategies.Results from ENVISAT/ASAR Interferometry for the Kalohori area are primarily discussed, whereas issues associated with interesting other signals detected in the broader area of Thessaloniki, which verify suspected deformation previously revealed by ERS SAR Interferometry, are also addressed.
- Publication:
-
ESA Special Publication
- Pub Date:
- March 2010
- Bibcode:
- 2010ESASP.677E..94M