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On-demand Sentinel-1 Interferogram Generation Service for Monitoring of Volcano Deformation

Raphael Grandin 1, Marie Boichu2, Théo Mathurin3, Nicolas Pascal3, Roland Akiki4, Jérémy Anger4, Carlo de Franchis4

  • Affiliations: 1Institut de physique du globe de Paris, Univ. Paris Cité, UMR 7154, Paris, F-75005, France; 2CNRS, Laboratoire d\'Optique Atmosphérique, UMR 8518, Lille, F-59000, France; 3ICARE Data and Services Center, CNRS, CNES UMS 2877, Univ. Lille, Lille, F-59000, France; 4Kayrros SAS, Paris, F-75009, France

  • Presentation type: Poster

  • Presentation time: Friday 16:30 - 18:00, Room Poster Hall

  • Poster Board Number: 48

  • Programme No: 2.3.34

  • Theme 2 > Session 3

Abstract

Sentinel-1 interferograms today represent standard information to assess the extent and magnitude of ground deformation in volcanic areas. However, in spite of an open-access data distribution policy, rapid Sentinel-1 InSAR processing remains a challenge due to the large size of Interferometric Wide (IW) SAFE products.   Institut de physique du globe de Paris (IPGP) and Université de Lille are developing an online open-access service for on-demand computation of Sentinel-1 interferograms focused on volcanic areas, accessible through a web application. InSAR calculation relies on the EOS-SAR Python library developed at Kayrros. EOS-SAR implements an accurate Sentinel-1 geometric model accounting for fine timing corrections, which allows to get native co-registration and stitching of bursts, resulting in a time series of well-aligned, geometrically consistent, Sentinel-1 bursts mosaics. The processing can be restricted to arbitrarily small AOIs, within a single or a few consecutive bursts or adjacent sub-swaths, which saves time, computing resources and storage space. The service leverages the Copernicus Data Space Ecosystem (CDSE) S3 object storage service for efficient data access.   Anticipated end-users of the service include volcano observatory teams, scientists and researchers from academia and students training in the field of volcanology and remote sensing.   The Sentinel-1 interferogram generation service for volcanic areas is developed as part of the "Volcano Space Observatory" platform, funded in the framework of the Horizon Europe, EOSC FAIR-EASE project (Grant 101058785), led by the French Research Infrastructure "Data Terra".