Science Service System

Summary of Proposal LAN0887

TitleUtilizing TerraSAR-X data for monitoring surface movements, induced by near-surface and deep fluid circulations in the Thuringian Basin, using differential SAR interferometry techniques (AQUI-DEF-Thuringia).
Investigator Thiel, Christian - Friedrich-Schiller University, Institute of Geography / Geoinformatics
Team Member
Mrs. Salepci, Nesrin - Friedrich-Schiller University, Institute of Geography, Department of Earth Observation
Mr. Reiche, Johannes - Friedrich-Schiller University, Institute of Geography, Department of Earth Observation
SummaryDifferential SAR interferometry (dInSAR) techniques will be utilized for monitoring the full temporal and spatial dynamic of surface displacements with expected velocities rates between a few mm/year up to some cm/year, induced by fluid fluxes and groundwater level changes in sub-surface aquifers within the ThuringianBasin. Radar satellite imagery from various missions and platforms covering X-, C- and L-band are the basis for the multi-frequency interferometric analysis. The work is part of the ongoing INFLUINS project, in which the dynamic of subsurface fluid and material fluxes in sedimentary basins is investigated at different scales. In the surroundings of planned deep surface boreholes, radar data acquired during different seasons, weather conditions and ground water levels will be analyzed using advanced dInSAR techniques such as persistent scatterer interferometry (PSI). Initially, velocity models representing the temporal dynamic of the ground motions including their geographic location will be generated. The evaluation of the velocity model, using ground water gauging station time series and evaluated borehole data enables the secure identification of the fluid induced part of the radar signal. The results will be analyzed and interpreted within the INFLUINS project, which will extend the scientific knowledge of ground water aquifers dynamics. In regard to the planned extradition of subsurface gas storages, the expected results will show the suitability of spaceborne radar techniques as an economic and time efficient monitoring tool for the identification of possible deformations in an early stage.

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DLR 2004-2016