Browsing by Author "Subodh Kumar Chaturvedi"

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Detection and interpretation of lineaments using remote sensing and Gis techniques in Amessa Guracha watershed of the main Ethiopian Rift valley, east Africa
(International Journal of Scientific and Technology Research, 2020) Anirudh Bhowmick; Jai Ram Ojha; Subodh Kumar Chaturvedi; Chandrakant Singh; Tadewos Seyoum
The present research paper embodies remote sensing applications of image processing and the use of GIS technique for the manual digitization of linear features in the Amessa Guracha watershed area of Southern Nations Nationalities and Peoples Region (SNNPR) of Ethiopia. The panchromatic image is used to emphasize subtle brightness value differences associated with the linear features. These differences are enhanced with 'Contrast Enhancement Applications‘. The spatial feature manipulation is applied to promote the spatial tonal variations present in the image using digital filters. The enhancement of images with the digital filters is categorically divided into two – 'directional‘ and 'non-directional‘. The rose diagram shows that the orientations of lineament are mostly in NNE and SSE directions. Comparison of the present study with the local geology of the area suggests that these lineaments are the ultimate results of the compressive/tensile stresses developed due to tectonic and lithological influences which in turn, are responsible for the development of lineament in the East African Rift Valley. © 2020 IJSTR.