WP2: National scale risk assessment
DEL2.1 – Land subsidence baseline risk maps for the 15 metropolitan cities of Italy
This collection of digital maps aims to provide a baseline risk assessment overview for the 15 metropolitan cities of Italy, in relation to the process of differential displacement induced by land subsidence/uplift. The maps illustrate the spatial distribution of present-day hazard, exposure-vulnerability and risk levels within each city and, as such, could provide valuable inputs for land subsidence-related risk management and mitigation workflows for national land management and urban authorities. The detailed description of the methodology that was employed to generate the maps is available in DEL2.2.
–> Go to SubRISK+ ‘Control Room‘ to explore the maps
DEL2.2 – Present-day land subsidence risk in Italy
This report presents the newly-developed methodology to assess land subsidence risk at the national scale, using satellite-derived ground displacement observations and land cover data. The methodology exploits InSAR datasets from the European Ground Motion Service (EGMS) of the Copernicus Programme, along with urban settlement characteristics from the Global Human Settlement Layer (GHSL) and the World Settlement Footprint (WSF) datasets. These are used to estimate present-day distribution and levels of hazard and exposure-vulnerability across the 15 metropolitan cities of Italy and, in turn, classify and map risk levels.
–> Full report: CIGNA F., PARANUNZIO R., BONÌ R. & TEATINI P. (2024). PRIN 2022 PNRR SubRISK+ Deliverable DEL 2.2: Present-day land subsidence risk in Italy, Version 1.0, Issue date: 30/09/2024, pp. 67.
–> See also the journal papers: Cigna et al. 2025, Lenardón Sánchez et al. 2024
WP3: Regional scale land subsidence analysis
DEL3.1 – Land subsidence hotspots database for Emilia-Romagna region
This digital database provides a collection of land displacement hotspots identified within the plain of Emilia-Romagna region, based on advanced statistical analysis of InSAR displacement time series. Three main independent components (ICs) are identified within the time series (linear, non-linear, and seasonal trends), and homogeneous clusters with similar trends are delineated using an optimized hot spot analysis. Many land displacement drivers are investigated, including tectonics, soft soil compaction, groundwater withdrawal, infrastructural loading, hydrocarbon storage, and production. The detailed description of the methodology that was employed to generate the database is available in DEL3.3.
–> Go to SubRISK+ ‘Control Room‘ to access the database
DEL3.2 – Land subsidence risk map for Emilia-Romagna region
This collection of digital maps aims to provide a differential displacement risk assessment overview for the plain of Emilia-Romagna region in northern Italy, over an investigated area of >10,000 km2. The exposure-vulnerability and risk maps are obtained by exploiting the building footprint database distributed by Emilia-Romagna Region, and thus provide an enhanced regional scale overview of the baseline risk scenario for this territory. Four risk levels, ranging from low to very high, are distinguished, thus offering relevant information to various stakeholders, such as regional land management and urban authorities. The detailed description of the methodology that was employed to generate the maps is available in DEL3.3.
–> Go to SubRISK+ ‘Control Room‘ to explore the maps
DEL3.3 – Driving and conditioning factors of the land subsidence in Emilia-Romagna region
This report presents the findings of the identification of land subsidence hotspots, the interpretation of the key drivers of the movement, and the assessment of risk for Emilia-Romagna, an Italian region where land subsidence has reached alarming levels, forcing regional and local authorities to take legislative measures aimed to control the process (Italian Law n.845, 10/12/1980). The analysis exploits InSAR datasets from Copernicus EGMS, geological and hydrogeological datasets available via the geoportal of the Emilia-Romagna region and ARPAE.
–> Full report: BONÌ R., GOLIRAEISI L., SAPIO S., TARAMELLI A., CIGNA F., PARANUNZIO R. & TEATINI P. (2025). PRIN 2022 PNRR SubRISK+ Deliverable DEL 3.3: Driving and condition factors of the land subsidence in Emilia-Romagna region, Version 1.0, Issue date: 31/01/2025, pp. 53.
–> See also the journal paper: Farías et al. 2024