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Summary of Proposal GEO3462

TitleExploitation of TerraSAR-Xtime series for environmental monitoring on CNES Kalideos sites
Investigator Proy, Catherine - CNES, DSO/SI/2A
Team Member
Dr KARBOU, Fatima - Météo-France/CNRS UMR3589-CNRM, Centre d Etudes de la Neige
Dr. DUMONT, Marie - Météo-France/CNRS UMR3589-CNRM, Centre d Etudes de la Neige
Engineer, PhD PROY, Catherine - CNES, CNES DSO/SI/2A – Analyse et Algorithmie
Engineer HOUPERT, Laurence - CNES, CNES DSO/SI/2A – Analyse et Algorithmie
Dr. in Engineering G MALET, Jean-Philippe - Université de Strasbourg / Unistra, École et Observatoire des Sciences de la Terre / EOST
Dr., VILLENEUVE, Nicolas - Observatoire Volcanologique du Piton de la Fournaise, UMR 7154 IPGP
Engineer in signal a POUSTOMIS, Florian - NOVELTIS, Signal and Image Unit
researcher Bodin, Xavier - CNRS, Laboratoire EDYTEM
professor Schoeneich, Philippe - UGA - Université Grenoble Alpes, Institut de Géographie Alpine
Dr., Assistant Physi FROGER, Jean Luc - Observatoire de Physique du Globe de Clermont-Ferrand, Université Blaise Pascal, UMR LMV
Engineer MOUQUET, Pierre - SEAS-OI / université de La Réunion, UMR228 ESPACE-DEV
Dr., Physicist PELTIER, Aline - OVPF/IPGP, OVPF
Dr., Engineer CATRY, Thibault - IRD, UMR228 ESPACE-DEV
SummarySince 2000, the CNES Kalideos scientific programme (www.kalideos.fr/drupal/) aims at: -facilitating the use of optical and radar remote sensing data -developing efficient methods for information extraction -supporting academic research and service offer Databases were built on four Kalideos sites, Adam (Romania), La Réunion Island, Littoral (Arcachon basin, France) and OSR MiPy (South West of France). Free access to databases content, temporal series of optical and radar satellite images, ancillary and ground truth data (maps, physical parameters, land occupation, etc.) is granted to registered scientists and French public institutions for non-commercial activities, while the highest quality pre-processing is guaranteed. In 2005, CNES replied to the DLR-TerraSAR-X AO (referenced LAN 1229) and received TerraSAR-X products for the Kalideos sites. Latest results obtained where presented during the TerraSAR-X/TanDEM-X Science Team Meeting in October 2016 at DLR with a poster entitled “Assimilation of TerraSAR-X and optical data into an agro-meteorological model to estimate wheat biophysical parameters (LAI, biomass, yield)” (Baup et al., 2016). In 2015, CNES selected new Kalideos sites and added the objective to stimulate the development of operational methods and applications to the benefit of the institutional sector. Three new Kalideos sites (Alsace, Alps, Brittany) and one former site (La Réunion Island) were selected. Building of the associated databases began in 2016 and is funded by CNES until 2020. The 4 current Kalideos sites have a multi-thematic ambition: •The Alsace site monitors the evolution of urbanization and the vulnerability of the territory to natural hazards, develops methods for forest management and survey ground deformation due to anthropogenic exploitations •The Alps site mainly supports risk management (e.g. gravity risks, avalanche risks) and study of cryosphere (e.g. snow cover and properties, glacier mass balance) •La Réunion Island site focuses on volcanology and erosion studies •The Brittany site monitors landscape and land cover dynamics in an area characterised by intensive agriculture and rapid urban growth. With this 3-years proposal, Kalideos aims at enriching the Kalideos databases for Alsace, Alps and La Réunion Island sites with new time series of TerraSAR-X data to serve the three following case studies of geophysical risk monitoring: •In Alsace, the team of J.-P. Malet at EOST will assess the potential of TerraSAR-X imagery for detecting and monitoring local surface deformation distributed in the Upper Rhine Graben. A feasibility study will be performed to monitor geothermal exploitations / mining activities from space. •In the Alps, the team of F. Karbou and M. Dumont at CEN will focus on monitoring some relevant snow properties using remote sensing SAR observations (wet/dry snow extent, Snow Water Equivalent, Snow water content ...) and will study the added value of X band SAR observations to detect snow avalanche debris. •In La Réunion Island, the team of N. Villeneuve and J.-L. Froger (Co-Pi) will focus on (i) the use of TerraSAR-X images and other radar sensors to characterize the eruptive deformation, (ii) the development of a PS InSAR chain at the OVPF, (iii) the inter-comparison between several techniques. To reach these objectives, data from ascending/descending orbits at the highest frequency (each 11 days) is requested over several areas: Soultz and Strasbourg (Alsace), the French Alps and La Réunion Island. Reports on a 6 month basis and a final report will be delivered. Four Ph.D. thesis (2 for Alsace, 2 for La Réunion), publications in peer-reviewed journals, participation in the DLR TerraSAR-X Science Team Meeting and in international conferences are foreseen to communicate the final results. All activities are already funded and PIs and co-PIs are ready to exploit TerraSAR-X data.

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