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Monitoring post-mining subsidence in the Nord-Pas-de-Calais coal basin (France): comparison between interferometric SAR results and levelling.
- Source :
-
Geocarto International . Oct2008, Vol. 23 Issue 4, p287-295. 9p. 4 Diagrams, 4 Charts, 2 Graphs, 1 Map. - Publication Year :
- 2008
-
Abstract
- The interferometric synthetic aperture radar (InSAR) technique is used to detect surface deformations in the French Nord-Pas-de-Calais coal mining basin. Several subsiding areas had already been observed at the sites of Lens, Billy-Montigny, Courrieres and Ostricourt during the 1992-2000 period. InSAR deformation measurements are compared with ground-based levelling measurements and an analysis of the results shows a good agreement for the relative deformations. However, the InSAR study reveals a systematic bias of the absolute levelling values. Our interpretation is that the stability points of the ground-based monitoring network probably moved during the study period. Such cross-checking is particularly important considering the current legal value of the levelling measurements. [ABSTRACT FROM AUTHOR]
- Subjects :
- *INTERFEROMETRY
*RADAR
*COAL mining
*GEOLOGICAL basins
*SYNTHETIC apertures
Subjects
Details
- Language :
- English
- ISSN :
- 10106049
- Volume :
- 23
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Geocarto International
- Publication Type :
- Academic Journal
- Accession number :
- 33193458
- Full Text :
- https://doi.org/10.1080/10106040801953850