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Suivi géodésique des réservoirs souterrains

Abstract : This study focuses on underground reservoirs, used for gas storage in salt caverns, and geothermal energy production. The objective is to develop a methodology using spatial geodesy (InSAR and GNSS) to extract a maximum of information from the surface deformation resulting from underground processes (pressure and volume variations). The vegetated areas overhanging the studied reservoirs are subject to significant temporal decorrelation, which is unfavourable for an efficient application of InSAR. The results show that it is possible to extract multi-millimeter displacements by combining these two techniques. This work also shows that InSAR can be used as a warning tool via fast processing, a compromise between speed and accuracy. The availability of Sentinel-1 data (free) offers unrivalled monitoring prospects in terms of spatial and temporal resolution, logistics and economics.
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Submitted on : Monday, April 6, 2020 - 7:13:19 PM
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Henrion_Eric_2019_ED413_A.pdf
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  • HAL Id : tel-02534205, version 1

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Eric Henrion. Suivi géodésique des réservoirs souterrains. Géophysique [physics.geo-ph]. Université de Strasbourg, 2019. Français. ⟨NNT : 2019STRAH009⟩. ⟨tel-02534205⟩

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