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Advancements in InSAR for Geo-Hazards: Satellite Ground Displacement Mapping Techniques

Alain Arnaud, CEO of InSARmotion, discusses the implementation of InSAR technology for ground displacement mapping. This presentation covers the basic principles of InSAR, emphasizing a new methodology for generating high-resolution ground movement rate maps using radar satellite data like Sentinel-1. With advanced algorithms, wide-area motion maps can be rapidly created for various applications, including geo-hazard monitoring in landslides, tectonic movements, volcanic activity, and more. The results showcase collective datasets applicable for continental-scale studies and public accessibility.

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Advancements in InSAR for Geo-Hazards: Satellite Ground Displacement Mapping Techniques

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Presentation Transcript

  1. Alain Arnaud, CEO Contribution to GEOSS Satellite InSAR – PSI for ground displacement mapping Alain ARNAUD, CEO

  2. InSARmotionmappingbasics and currentprojects Results Second measurement (afterwards) Radar satellites First measurement Ground movement rate maps Superimposition of waves to detect differences In terferometric = S ynthetic A perture R adar High resolution radar system = Ground movement time series Difference between two measurements indicates ground movement over time Travel phase between ground and sensor gives mmtric distance 3 cm InSARgroundmotion data utilised in a multiude of geo-hazardfocusedprojects PanGEO - 3 cm

  3. Wide area map initiative of Terrafirma • Traditionally InSAR analysis of local area or of single phenomena = inefficient • Advanced algorithms to process full image data frames rapidly and allow multiple applications of data • Methodology will be applicable to Sentinel-1 data to allow rapid wide area motion maps to be produced • Method for integrating multiple track datasets into a single motion map • Resulting datasets can be freely viewed • Resulting datasets can be used for multiple applications of InSAR to Geo Hazards • To allow continental scale and future worldwide ground motion dataset Process large land-masses as one dataset – one dataset ….. many applications

  4. Wide area map initiative of Terrafirma SPACE SEGMENT SENTINEL 1 • Traditionally InSAR analysis of local area or of single phenomena = inefficient • Advanced algorithms to process full image data frames rapidly and allow multiple applications of InSAR to Geo Hazards • Methodology will be applicable to Sentinel-1 data to allow rapid wide area motion maps to be produced • Method for integrating multiple track datasets into a single motion map • Resulting datasets can be freely viewed • To allow continental scale and future worldwide ground motion dataset NEW CONCEPT and NEW ALGORITHMS for a NEW PRODUCT Process large land-masses as one dataset – one dataset ….. many applications

  5. InSARBenefits for Disasters: GeoHazards mapping Landslides • Wide area map for survey & ongoing local studies with VHR SAR Tectonics • Wide area ground motion data – strain data for EPOS and GEM etc Volcanics • Volcano activity monitoring: inflation/deflation cycle Mine subsidenceKarst Geology • Mining induced subsidence • Abandoned mine re-watering uplift • Karst Geology – sink hole formation Flooding • Dike stability • Subsidence monitoring of flood prone areas Many applications can be served from one InSAR ground motion dataset

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