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"Sentinel-1 for Geohazard Prevention and Forecasting" (SAFETY) was a two year project, funded by European Commission (Ref. ECHO/SUB/2015/718679/Prev02-SAFETY) which aims at providing Civil Protection Authorities (CPA) with the capability of periodically evaluating and assessing the potential impact of geohazards on urban areas. It finished in December 2017. Main reached objectives were the creation of useful products and tools, which exploit Sentinel1 data, and the design of a sustainabledoi:10.5281/zenodo.2559516 fatcat:gjg7gm4o2nh6tgysbmcnnvc5ri
more »... erm infrastructure involving CPAs and Public Organizations (PO) responsible for the monitoring of the particular geohazards.
The potentialities of Sentinel-1 in geohazard detection and monitoring, at a regional-to-local scale, have been demonstrated in the last two years. Nevertheless, the interpretation of the DInSAR derived products (like the deformation velocity maps) can be complex and misleading, mostly for a final user who is not familiar with the DInSAR technology. For this reason, the DInSAR is still not integrated in the existing risk management and monitoring structures as a constant and periodicaldoi:10.5281/zenodo.2560368 fatcat:3dausae3vrb7vhrsn2jkrwak6a
more »... tary input. In this work, we present a semi-automatic methodology, developed in the framework of the European Project SAFETY, to simplify the interpretation and the practical use of the DInSAR derived results in the risk management at a regional scale. The methodology extracts and resumes the main information of the most significant detected Active Deformation Areas (ADA). In this work, the methodology is explained and its application to landslides detection and monitoring is presented by showing some cases of study in Italy and Spain.
This work is aimed at presenting the ongoing project SAFETY (Sentinel for Geohazards regional monitoring and forecasting). The use of Differential SAR Interferometry (DInSAR) in Natural Risks management is becoming more and more exploitable thanks to the experienced growth of the techniques. On one hand, since the DInSAR technique was proposed for the first time (1989) a wide number of data processing, analysis tools and methods have been developed, on the other hand the satellite datadoi:10.5281/zenodo.1158633 fatcat:2lkc5xmipbge3oxrxjkuieppei
more »... ity has increased and provides sensors with different characteristics of sensitivity and spatial and temporal resolutions. Nowadays, DInSAR allows to have a systematic overview about the spatio-temporal activity of a natural deformation phenomena, which is an important information for the risk management in terms of prevention, emergency response and post-emergency intervention. Specifically, Sentinel-1 (A and B) satellites data show two favourable characteristics: the wide covered area and the short revisit time (6 days). The last one, if compared with the other C band available sensors, results in a reduced temporal decorrelation, particularly in non-urbanized areas, in more robust processing results (due to the higher number of images) and in an higher temporal sampling i.e. a better monitoring and activity characterization. In this context, the European project SAFETY is focused on developing tools and implementing a methodology in order to better exploit Sentinel-1 data in the Civil Protection activities of natural risks prevention. The project is aimed at providing Civil Protection Authorities (CPA) with the capability of periodically evaluating and assessing the potential impact of geohazards (volcanic activity, earthquakes, landslides and subsidence) on urban areas. The first results over the two test-areas in Spain and Italy (respectively Canary Islands and Volterra Municipality) will be presented.
This work is focused on deformation activity mapping and monitoring using Sentinel-1 (S-1) data and the DInSAR (Differential Interferometric Synthetic Aperture Radar) technique. The main goal is to present a procedure to periodically update and assess the geohazard activity (volcanic activity, landslides and ground-subsidence) of a given area by exploiting the wide area coverage and the high coherence and temporal sampling (revisit time up to six days) provided by the S-1 satellites. The maindoi:10.3390/rs9101002 fatcat:rhi2nhr4pnbunm2fnaolwglp2a
more »... oducts of the procedure are two updatable maps: the deformation activity map and the active deformation areas map. These maps present two different levels of information aimed at different levels of geohazard risk management, from a very simplified level of information to the classical deformation map based on SAR interferometry. The methodology has been successfully applied to La Gomera, Tenerife and Gran Canaria Islands (Canary Island archipelago). The main obtained results are discussed.
SAFETY (safety.cttc.es) is a two-years research project funded under the ECHO (European Commission's Humanitarian aid and Civil Protection department) call "Prevention and preparedness projects in Civil Protection and marine pollution", which started the 1st of January 2016. The mission of the project was to improve the efforts in detecting and mapping geohazards (i.e. landslide and subsidence), by assessing their activity and evaluating their impact on built-up areas and infrastructuredoi:10.5281/zenodo.2558386 fatcat:vocltpnlwvh77j2mmkp3wcv274