Apport Des Images ETM+ Et Du Modèle Numérique De Terrain (MNT) A La Cartographie Des Fractures En Région Montagneuse : Secteur De Timia (Massif De l’Aïr, Nord Du Niger)

  • Illias Alhassane Université Abdou Moumouni de Niamey, Faculté des Sciences et Techniques, Département de Géologie, Niamey, Niger Université d’Agadez, Faculté des Sciences et Techniques, Département de Géologie, Agadez, Niger
  • Abdou Babaye Maman Sani Université Dan Dicko Dankoulodo, Faculté des Sciences et Techniques, UMR SERMUG, Département de Géologie, Maradi, Niger
  • Sandao Issoufou Université Abdou Moumouni de Niamey, Faculté des Sciences et Techniques, Département de Géologie, Niamey, Niger
  • Saley Mahaman Bachir Université Félix Houphouët Boigny d’Abidjan, Cocody, UFR SRTM, CURAT, Abidjan, Côte d’Ivoire
  • Ousmane Boureima Université Abdou Moumouni de Niamey, Faculté des Sciences et Techniques, Département de Géologie, Niamey, Niger

Abstract

Timia is located at the Aïr massifs region. This locality, which is the substratum that constituted the basement formations, has some difficulty of water supply. This present study focuses on fractures mapping to acquire the best knowledge of the fractured aquifer in Timia zone. The methodological approach is based on landsat7 image processing and DEM, especially directional filtering and shaded digital terrain models. These diverse processing has shown complementarity between the satellites images and DEM in linear mapping on the one hand and in establishing a lineaments map on the other hand. The lineament map showed that the fractures network is distributed in the following directions: N0°-N10°, N140°-N170°, N 70°- N100°, and N30°-N50°. These fractures map, which was allowed to increase the density of faults from the previous studies, were used to actualize hydrogeological knowledge and in determining the favorable sites for drilling boreholes in Timia locality.

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Published
2018-03-31
How to Cite
Alhassane, I., Sani, A. B. M., Issoufou, S., Bachir, S. M., & Boureima, O. (2018). Apport Des Images ETM+ Et Du Modèle Numérique De Terrain (MNT) A La Cartographie Des Fractures En Région Montagneuse : Secteur De Timia (Massif De l’Aïr, Nord Du Niger). European Scientific Journal, ESJ, 14(9), 103. https://doi.org/10.19044/esj.2018.v14n9p103