SC50/TS10.4Training on the SBAS-DInSAR web tool for surface deformation analysis (co-organized)
|Convener: Riccardo Lanari | Co-Conveners: Francesco Casu , Claudio De Luca , Michele Manunta|
Fri, 17 Apr, 10:30–13:15
In the context of space-borne geodetic techniques, Differential Synthetic Aperture Radar Interferometry (DInSAR) has demonstrated its high performance in measuring surface displacements in different conditions and scenarios, both natural and anthropic. In particular, the advanced DInSAR time series processing method referred to as Small BAseline Subset (SBAS), that allows studying both the spatial and temporal variability of the surface displacements, has proven to be particularly suitable in different contexts, as for natural hazards (volcanoes, earthquakes and landslides) and human-induced deformation (subsidence due to aquifer exploitation, mining operations, and building of large infrastructures).
Recently, this algorithm has been fully integrated within the ESA’s Grid Processing on Demand (G-POD) environment, which is part of the Geohazards Thematic Exploitation Platform (TEP) of ESA. The Geohazards TEP is devoted to the exploitation of EO data resources in the context of the Geohazard Supersites & Natural Laboratories as well as on the CEOS Pilots on Seismic Hazards and Volcanoes. The Geohazards TEP is sourced with elements, data and processing, including SBAS-DInSAR, relevant to the geohazards theme.
The integration of the SBAS-DInSAR algorithm within G-POD resulted in a web-based tool freely available to the scientific community. This tool allows users to process, from their own laptops, the ESA SAR data archives for obtaining surface displacement maps and time series in a completely unsupervised way, without caring about data download and processing facility procurements.
The course is organized in two parts. First, an overview on the DInSAR processing methods allowing to retrieve mean surface deformation maps and displacement time series will be provided, with a specific focus on the SBAS-DInSAR technique. Secondly, the G-POD environment will be introduced and the GPOD SBAS-DInSAR web tool will be presented.
The main goals of the short course are:
- Provide a brief overview on the DInSAR techniques for the analysis of surface deformation phenomena;
- Discuss the details of the SBAS-DInSAR technique;
- Show real-examples of application scenarios;
- Present the new opportunities offered to geoscientists through the freely accessible G-POD SBAS-DInSAR web tool and introduce the TEP initiative.
Basic knowledge of SAR data analysis is envisaged; personal laptops can be useful.