Sentinel-1 Big Data Processing with P-SBAS InSAR in the Geohazards Exploitation Platform: An Experiment on Coastal Land Subsidence and Landslides in Italy

The growing volume of synthetic aperture radar (SAR) imagery acquired by satellite constellations creates novel opportunities and opens new challenges for interferometric SAR (InSAR) applications to observe Earth’s surface processes geohazards. In this paper, the Parallel Small BAseline Subset (P-SBAS) advanced InSAR processing chain running on Geohazards Exploitation Platform (GEP) is trialed process two unprecedentedly big stacks Copernicus Sentinel-1 C-band images in 2014–2020 over a coastal study area southern Italy, including 296 283 scenes ascending descending mode, respectively. Each stack was processed GEP less than 3 days, from input data retrieval via repositories, up generation output P-SBAS datasets coherent targets their displacement histories. Use-cases long-term monitoring land subsidence at Capo Colonna promontory (up ?2.3 cm/year vertical ?1.0 east–west rate), slow-moving landslides erosion landforms, deformation modern protection infrastructure city Crotone are used to: (i) showcase type precision products outputting data, derivable key information support value-adding geological interpretation; (ii) discuss potential using cloud/grid infrastructure.