The study of the deformation time evolution in coastal areas of Shanghai: A joint C/X-band SBAS-DInSAR analysis

In this work, we investigate the temporal evolution of the ground deformation over the ocean-reclaimed area of the Shanghai megacity (China). To this aim, we performed an integrated SBAS-DInSAR analysis by benefiting from the availability of SAR data collected at C-band by the ENVISAT ASAR sensor, and at X-band by the COSMO-SkyMed and TerraSAR-X SAR constellations, spanning the overall time interval between 2007 and 2015. The joint exploitation of different SAR datasets and the knowledge of time-dependent models for the expected subsidence in ocean-reclaimed platforms is helpful to retrieve long-term displacement time series, thus allowing us to get new insights about the future evolution of the reclamation area settlements over the next years.