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FRINGE '96 Workshop: ERS SAR Interferometry, 30 September - 2 October 1996
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SAR Interferometry for monitoring land subsidence: Application to areas of underground earth resources mapping

Claudie Carnec, Christine King BRGM, Research Division, Geophysics and Geological Imagery, 3 Ave. C., Guillemin, B.P.6009, 45060 Orleans Cedex 2, France
Didier Massonnet CNES, Satellite Image Quality and Processing Division, Dept. Performance of radar systems, 18, Ave. Edouard belin, 31055 Toulouse, France.

Thierry Rabaute SCOT Conseil, 1 Rue Hermes, Parc Technologique du Canal, 31526 Ramonville Cedex, France


Numerous studies carried out within the framework of natural hazards research programs have enabled to test the contribution of SAR remote sensing. The assessment of the interferometry possibilities with the first European Remote Sensing Satellite has been done for sites already known for their instability, involving landslides and subsidence.
Differential interferograms were generated using ERS RAW data recorded either during a 35 days or a 3-days cycle and combined with a DEM covering an underground coal mining in the south of France. The time series of results show good correlations (1) between the geographic location of fringes and the exploitation schedule of the coal deposit that has been mined on the dates the images were taken and (2) between the fringe patterns and the intensity of the ocal subsidence measured along the benchmark network. Therefore those results provide a good way for mapping evolutive surface deformations in a semi-industrial area and for testing the quality of theoretical models of subsidence.
Carnec, C. , Massonnet, D., Villain, J.P., King, C., 1994:
Potential application of differential SAR interferometry for monitoring impact of underground mining. First Workshop on SAR Interferometry, Tokyo, Japan, pp. 41-45.
Carnec, C. ,King, C., Massonnet, D., 1995:
Measurement of land subsidence by means of differential SAR interferometry. Fifth International Symposium on Land Subsidence (FISOLS 95), Barends et al., ed. Balkema. (Rotterdam) , pp. 139-148.
Carnec, C. , Massonnet, D.,King, C., 1995:
Potentiel d'Application de l'Interferometrie SAR a la detection et a la caracterisation de mouvements de terrain. Int. Symp "Extraction de parametres bio-geophysiques a partir de donnees RSO pour les applications terrestres, CNES/IEEE, Toulouse, France, pp. 639-648.

Carnec, C., 1996:
Interferometrie SAR Differentielle : application a la detection et au suivi de mouvements de terrain. these de 3e cyle Univ.Paris 7, document BRGM.

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry