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Article
Preliminary Lineament Analysis within the vicinity of Kainji Dam, Nigeria using ERS-1 SAR Image
Confluence Journal of Environmental Studies (2012)
  • M S Kolawole
  • E G Ameh
  • A Daniel
Abstract

Various affordable, operational technologies such as remote sensing, Geographic Information Systems (GIS) can significantly contribute to improved efficiency. The main focus of the project has been directed to the use of remote sensing to gain geological and geohazard information. This study examines the use of Remote Sensing (RS) technology in geological studies of Kainji area. Radar SAR images were used to classify the various geological fractures found in the area located in the Northern part of Nigeria. A wide variety of digital image processing techniques were applied such as the Principal Components (PC) analysis and ratioing. ERS-1 SAR image that has benefits of low resolution and cloud independence is used as data source to produce lineaments map after image processes such as edge enhancement, PCA and filters in an ILWIS 3.2 GIS environment. A total of 230 lineaments were observed using both a color composite image and the filtered images of the study area. The result indicates that the fractures in the area generally trend N-S, and E-W. There are also two prominent sets of fracture with both roughly oriented to NNE-SSW and most of the longer lineaments are concentrated in the NNW-SSE direction which implies that the lineament of the area are in the same direction with the tectonic forces that led to the fracturing of the outcrops. This was also shown and demonstrated by the direction of the digitized river channels.

Keywords
  • Lineament,
  • Radarsat,
  • Remote Sensing,
  • GIS,
  • Fractures
Disciplines
Publication Date
Spring July 16, 2012
Citation Information
M S Kolawole, E G Ameh and A Daniel. "Preliminary Lineament Analysis within the vicinity of Kainji Dam, Nigeria using ERS-1 SAR Image" Confluence Journal of Environmental Studies Vol. 7 (2012)
Available at: http://works.bepress.com/cjes_kogistateuniversity/21/