Multi-technique geodetic detection of onshore and offshore subsidence along the Upper Adriatic Sea coasts

• DOI: 10.1016/j.jag.2022.102756
• Publication Date: 2022-03-25T21:18:39Z
• Authors: Marco Polcari; Valeria Secreti; Letizia Anderlini; Matteo Albano; Mimmo Palano; Enrico Serpelloni; Salvatore Stramondo; Elisa Trasatti; Giuseppe Pezzo
• Keywords: Natural hazard; Tide gauge

We assess about 20 years of onshore and offshore subsidence along a sector the Upper Adriatic Sea (Italy) coastal areas affected by natural soil compaction intense anthropogenic activities such as aquifers exploitation hydrocarbons extraction. Our approach is based on synergistic use independent remote sensing in-situ geodetic data to detect spatially characterise deformation pattern cross-validating different available measurements. collect extensive datasets from i) SAR images provided Envisat, Cosmo-SkyMed Sentinel-1 missions, ii) GNSS measurements continuous stations managed public institutions, local authorities private companies iii) Leveling surveys. The cross-validation analysis shows good agreement among all datasets, thus providing reliable assessment ongoing deformation. an peak −1/-1.5 cm/yr in proximity coastline, close Lido di Dante Fiumi Uniti villages, at present platform. outcomes highlight how integration situ techniques successful retrieve history time space complex areas, where sources concur overall pattern. Moreover, provides robust support modelling studies for hazard both inland shoreline areas.