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Phosphate mine subsidences deduced from differential interferometry (DInSAR): The Moulares case example (southern Atlas of Tunisia) / Mehdi Ben Hassen in Comptes rendus : Géoscience, vol 343 n° 11-12 (November - December 2011)  

Public [article]  inComptes rendus : Géoscience > vol 343 n° 11-12 (November - December 2011) . - pp 729 - 737 Titre : Phosphate mine subsidences deduced from differential interferometry (DInSAR): The Moulares case example (southern Atlas of Tunisia) Titre original : Subsidences des mines de phosphates révélées par l’interférométrie différentielle (DInSAR) : exemple de Moulares (Atlas méridional de la Tunisie) Type de document : Article/Communication Auteurs : Mehdi Ben Hassen, Auteur ; Noamen Rebaï, Auteur ; Benoit Deffontaines , Auteur ; Mohamed Moncef Turki, Auteur ; Fredj Chaabani, Auteur Année de publication : 2011 Article en page(s) : pp 729 - 737 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes IGN] image ERS-SAR [Termes IGN] image radar [Termes IGN] interferométrie différentielle [Termes IGN] interféromètrie par radar à antenne synthétique [Termes IGN] mine [Termes IGN] subsidence [Termes IGN] Tunisie Résumé : (auteur) Tunisia is submitted to numerous small topographic displacements due to both the geodynamic of the Eurasian-African plates’ convergence, and to important anthropic actions such as oil production, underground water pumping, mine extraction and linked post-mining displacements. We propose herein to study the latter and locate, characterize, and quantify small topographic displacement fields due to the production of underground phosphate mines in central Tunisia. After having acquired and processed 17 radar images (ERS 1 and 2) of the central Tunisia (Gafsa area) through Differential Interferometry (DInSAR), we clearly observed local subsidence that we interprete as corresponding to mine exploitation of the underground Moulares Phosphates mines (southern Atlas of Tunisia). Field studies (circular normal faults located above the Phosphate extraction area) confirm the movement revealed by DinSAR. Also, DInSAR allows us to monitor temporal variations of the small vertical displacements on this specific area and since the collapse occurred near an urban area (Moulares city), this problem can be considered a potential anthropic risk. Numéro de notice : A2011-600 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : 10.1016/j.crte.2011.09.005 Date de publication en ligne : 08/11/2011 En ligne : https://doi.org/10.1016/j.crte.2011.09.005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91646 [article]