D-InSAR monitoring of ground deformation related to the dewatering of construction sites. A case study of Glòries Square, Barcelona

The aim of this paper is to demonstrate how the integration differential interferometric synthetic aperture radar (D-InSAR) and levelling improves monitoring ground deformation phenomena, thereby enabling their complete understanding. complementarity between D-InSAR illustrated through a case study construction road tunnel beneath Glòries Square, Barcelona; employed continuously monitor works, notably dewatering site. This focuses primarily on data obtained from processing Sentinel-1A following persistent scatterer interferometry procedure. spatial distribution its temporal evolution are analysed with detailed hydrogeological piezometric data. magnitude discussed using an analytical estimation based hydromechanical parameters pre-existing numerical model pumping tests. results shown be essential for identifying origin constraints spread. Such observations at site district (~2 km radius) scales sub-centimetric precious contributions data, whereas offers more accurate quantification deformation, although remains open issue further investigated.