GEP v2 successfully passed the Acceptance Review with ESA and is now ready for pre-operations!


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The GEP consortium led by Terradue (Italy) and with six partners from Spain, Germany, France, Greece and Italy, has successfully achieved the Acceptance Review of version 2 of the platform software and services. This marks a paramount milestone for the GEP community in the challenging journey initiated at the end of 2015. The v2 evolutions were driven by a built-in process for requirements analysis, design and implementation activities in consultation with geohazards users, in particular via:

  • the GEP Community Survey launched in February 2016
  • the gathering of monthly feedback about the utility of the services from the registered early adopters (e.g. InSAR specialists, mandated DRM organisations, geological surveys, etc.) with 70+ users
  • the collaboration and synergy with application development projects (e.g. the ESA General Studies Programme, and the CEOS WG Disaster pilots and demonstrators)
  • and discussions at community fora (e.g. EGU, FRINGE, ISTerre/MDIS Workshop, and training events organised by CNR IREA, ETH Zurich etc.).

The new version of the platform, GEP v2, provides a more robust environment and new functionalities able to meet user needs for efficient and cost-effective operations:

New data management & exploitation services

  • Thematic Apps: rule-based bundling of data collections and processing services, to improve user collaborations within ad-hoc workspaces
  • Direct access to Cloud processing outputs from the browser no longer requiring VPN Client setup
  • Visualisation of data processing outputs: now handling CSV time series, KML & shapefiles for vector data, full resolution rasters (including legends)
  • Improved visualisation performances: reduced display latency in the geobrowser, supporting the visualization of several large images and products
  • Data uploads: self-service upload of user data on the platform, for consumption by processing services
  • Results publication: direct publishing of the results of a processing chain for community sharing
  • Display of dynamic histograms of a query result over selected time span and area of interest for any data collection
  • Improved spatial filtering for the catalogue search: import of geometries (SHP, KML or geojson) and use of Gazetteer
  • GEP results post-processing, using Jupyter Notebooks


Figure 1: the new GEP v2 portal organization in Thematic Applications

New Cloud Platform capabilities

  • Enhanced Data Gateway
    • Automatic multi-sourcing to optimise data access requests
    • Programmable and systematic data caching
    • Data usage accounting
    • Personal cloud storage (repository)
  • Improved Production Center, with (auto)scalability allowing cost-effective data processing on Cloud Computing clusters
  • Integration with new Cloud-based processing environments
    • Terradue Private Cloud - GEP domain
    • CNR IREA Private Cloud - GEP domain
    • CloudFerro IPT Poland
    • EGI.eu (BELNET, INFN RECAS BARI)
    • Amazon AWS
  • Terradue is in dialogue with the providers of the Copernicus DIAS platforms

New resources as contributions from the community

  • Toolbox for Processing Service integrators:
    • Orfeo Toolbox
    • Sentinel Application Platform (SNAP) extensions
    • Stanford Method for Persistent Scatterers (StaMPS) extensions
  • Toolbox for Virtual Desktop environments:
  • Processing services integrated as part of the GEP Early Adopters Programme:
    • TIO by ISTerre
    • MineSAR by SATIM
    • Land-SE and Land-STAT by CNR IRPI
    • Optical and SAR Flood Extraction by e-Geos

and advanced processing services from the GEP consortium:

Dedicated demonstrations through Pilots led by the GEP consortium

Six GEP Pilots are now deployed or enhanced in order to demonstrate the benefit of virtualized and federated data processing:

  • DLR with the systematic processing of Sentinel-1 Interferometric Browse imagery at 100m and 50m resolution
  • TRE-Altamira with an advanced InSAR service for generating differential interferograms or PSI-based mean displacement velocity maps from a set of Sentinel-1 or ERS images
  • CNR-IREA with the terrain motion Sentinel-1 based Surveillance service for the generation of Earth deformation time series and mean velocity maps
  • EOST-CNRS with two services: DSM-OPT for Digital surface model generation from satellite optical stereo images and MPIC-OPT for detection and measurement of horizontal ground motion (e.g. co-seismic slip, landslides) based on sub-pixel image correlation
  • INGV with the STEMP service for volcanoes monitoring based on optical data processing from Landsat-8, Sentinel-2 and Sentinel-3 images
  • ENS-CNRS/NOA with a campaign to test and exploit GEP applications with the Corinth Rift Laboratory in which Greek and French experts of seismic hazards are engaged.

Enriched Services Portfolio

  • Overall 20+ on-demand services using both Optical & SAR data grouped in Thematic Apps, according to the defined goals of Community Managers
  • New advanced services are available for both Optical & SAR data processing (e.g. the SAR based SBAS multi-baseline processing chain of CNR IREA for InSAR measurements, the MPIC-OPT chain of CNRS EOST for Optical measurement using Sentinel-2 & VHR data etc.)
  • New basic services providing full resolution GeoTIFF imagery (e.g. RASTER on-demand service process many EO missions data) and change detection imagery (e.g. the SNAP based COIN & SNAC tools) for rapid on-line visualization
  • Overall 8 systematic services delivering continuously updated information layers on GEP, including the large scale production of Sentinel-1 InSAR browse images at both 100m and 50m resolution over tectonic regions
  • Extended scope of the information extraction services, now covering:
    • Classic InSAR diachronic analysis
    • Advanced InSAR for Persistent Scatterers and Small Baseline time series
    • Digital surface model generation from satellite optical stereo images
    • Change detection from SAR and Optical imagery
    • Detection and measurement of horizontal ground motion from Optical imagery

GEP v2 pre-operations are ensured at least until October 2019 and the GEP Early Adopter programme is able to on board additional users. Contact us at: geohazards-tep@esa.int.