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SiGRiS

SiGRiS. The SiGRiS pilot project: producing value-added, EO-based information for the management of the Seismic Risk.

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SiGRiS

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  1. SiGRiS The SiGRiSpilot project:producing value-added, EO-based information for the management of the Seismic Risk S. Salvi1, S. Vignoli2, S. Zoffoli3, P. Soddu4, and the SIGRIS team1Istituto Nazionale di Geofisica e Vulcanologia2Advanced Computer System spa3Agenzia Spaziale Italiana4Dipartimento della Protezione Civile USEReST Workshop - Naples, Italy, November 11-14, 2008

  2. Scope To exploit the full potential of EO data in the decision chain for the management of the Seismic Risk. Emphasis is put on the operational use of Cosmo-Skymed data. USEReST Workshop - Naples, Italy, November 11-14, 2008

  3. Specific objectives • To generate value-added products using well-established techniques and methods for: • To carry out research to fill gaps in the above fields • To demonstrate operational use by the Civil Protection Service • To define factors limiting the EO data exploitation 1 - geophysical data extraction from EO data, 2 - geophysical interpretation through a joint modeling of EO and ground data USEReST Workshop - Naples, Italy, November 11-14, 2008

  4. More details • The SIGRIS pilot project is funded by ASI, with 3.7 M€. • The project duration is 2007-2010. • The end User is the Italian Civil Protection Department (DPC) • The system operator will be INGV USEReST Workshop - Naples, Italy, November 11-14, 2008

  5. The research subjects • Extraction of geophysical data from EO data • Improvement of the SBAS time-series DInSAR algorithm • Cross validation using different data sets • Integration of geophysical models in the DInSAR processing • Geophysical modeling • Improve the modeling for the generation of VA products • Assure a better integration with in-situ observations • Assimilation of the model results in the Seismic Hazard Assessment procedures USEReST Workshop - Naples, Italy, November 11-14, 2008

  6. Common requirements of the system products • Timeliness • Established precision/accuracy • Standardization USEReST Workshop - Naples, Italy, November 11-14, 2008

  7. Products in two main SRM phases: • Knowledge & Prevention, i.e. support to the Seismic Hazard assessment • Warning & Crisis, i.e. support to the Emergency management USEReST Workshop - Naples, Italy, November 11-14, 2008

  8. Products to support Seismic Hazard assessment USEReST Workshop - Naples, Italy, November 11-14, 2008

  9. High resolution ground velocity maps Data: ERS, ENVISAT, Cosmo Skymed, CGPS Techniques: SBAS, PS-InSAR USEReST Workshop - Naples, Italy, November 11-14, 2008

  10. High resolution ground velocity maps • Updated every year • Validated using CGPS, Leveling, and SAR LoS velocities from various orbits, satellites and bands • Research on cross validation techniques • Research on multiframe data processing (SBAS) • Research on how to assimilate ground velocities in SHA USEReST Workshop - Naples, Italy, November 11-14, 2008

  11. Interseismic fault models Mattinata fault model: vertical, right-lateral fault USEReST Workshop - Naples, Italy, November 11-14, 2008

  12. Interseismic fault models ~ 3 mm/yr USEReST Workshop - Naples, Italy, November 11-14, 2008

  13. Interseismic fault models • Obtained by analytical inversion models and numerical models • Constrained and validated by ground data • Research on inversion techniques • Research on model improvements • Research on how to assimilate fault models in SHA USEReST Workshop - Naples, Italy, November 11-14, 2008

  14. Expected benefits for SHA • Identification of high strain patterns • Mapping and dimensioning of active faults • Refinement of seismotectonic models USEReST Workshop - Naples, Italy, November 11-14, 2008

  15. Products to support the Emergency management USEReST Workshop - Naples, Italy, November 11-14, 2008

  16. Coseismic deformation and source models Data: ERS, ENVISAT, Cosmo Skymed, ALOS Techniques: Standard DInSAR USEReST Workshop - Naples, Italy, November 11-14, 2008

  17. Coseismic Displacement, cm Coseismic deformation and source models Geophysical data: Coseismic ground displacement USEReST Workshop - Naples, Italy, November 11-14, 2008

  18. Coseismic deformation and source models Geophysical model: Geometry, kinematics, and slip distribution of the fault dislocation USEReST Workshop - Naples, Italy, November 11-14, 2008

  19. Early damage assessment Geological effects Data: High resolution optical data, SAR data Techniques: Operator-assisted photo interpretation, DInSAR USEReST Workshop - Naples, Italy, November 11-14, 2008

  20. Early damage assessment Urban damage Data: High resolution optical and SAR data Techniques: Automatic change detection, operator-assisted photo interpretation, InSAR USEReST Workshop - Naples, Italy, November 11-14, 2008

  21. Crisis products • Timeliness: damage é1-2 days, fault model é2-6 days • Released in successive versions with increased accuracy • Research on dislocation modeling of DInSAR interferograms • Research on data fusion and classification (urban damage) USEReST Workshop - Naples, Italy, November 11-14, 2008

  22. Benefits for Crisis management • Assessment of possible triggering of neighbouring faults • Impact of ground deformation on the hydrological system • Assessment of an event scenario • More effective search and rescue operations • Evolution of damage increments due to aftershocks USEReST Workshop - Naples, Italy, November 11-14, 2008

  23. Requirements for Crisis product • Fast EO data programming, acquisition and delivery • Same acquisition geometry (for change detection and InSAR) • Pre-seismic data regularly updated (more frequently for X-band SAR) • Minimise processing and validation time (SIGRIS infrastructure) USEReST Workshop - Naples, Italy, November 11-14, 2008

  24. Sichuan earthquake - May 12, 2008 Cosmo-Skymed data April 13th – May 15th stripmap interferogam 3 days after Eq Cheng Du USEReST Workshop - Naples, Italy, November 11-14, 2008

  25. Sichuan earthquake - May 12, 2008 Cosmo-Skymed data LoS displacement: 7 cm (model) vs. 13 cm (observation) USEReST Workshop - Naples, Italy, November 11-14, 2008

  26. Sichuan earthquake - May 12, 2008 Cosmo-Skymed data April 13th – May 15th stripmap image pair 3 days after Eq Inferred damagein red USEReST Workshop - Naples, Italy, November 11-14, 2008

  27. Final remark on operational use of EO data for SRM • Data availability is the most important issue: background missions are mandatory for both K&P and W&C apps, as fast acquisitions are for W&C apps. • Algorithms and models should be refined further, although many can already be used operationally USEReST Workshop - Naples, Italy, November 11-14, 2008

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