Browsing by Author "Abubakar, Hussain Olanrewaju"

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    Characterizing groundwater potentials in parts of the basement complex of Nigeria using GIS and remote sensing
    (Springer Nature Switzerland, 2023) Abubakar, Hussain Olanrewaju; Ige, Omoniyi Olusegun; Olatunji, Saminu; Iheme, Kenneth Obinna
    Groundwater prospect in parts of southwestern Nigeria was delineated by inferring the subsurface models from the responses of remote sensing and GIS data. In characterizing the area, both primary and secondary data were used. The primary data include landsat8 OLI and ASTER Digital Elevation Model, while the secondary data includes geology, soil, and topography maps of the area. Hence, thematic maps of potentials and lineament density, and land cover/use maps for the area were derived from the landsat8 OLI/TRS image. Thus, the area was characterized as follows: very low, low, moderate, high, and very high potentiality that covered 1.4 km2 (0.59%), 72.18 km2 (9.59%), 372.3 km2 (49.44%), 272.12 km2 (36.14%), and 35 km2 (4.64%), respectively. The western part of the area is dominated by very low to low potential, while the southern part of the area is dominated by high to very high potential. Hence, low and moderate potentials occupy the highest landmass (59.03%) in the area. In conclusion, the basement complex terrain in question has a moderately low aquifer capability.
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    RESISTIVITY TECHNIQUES FOR GROUNDWATER EXPLORATION IN PARTS OF BASEMENT COMPLEX OFSOUTHWESTERN NIGERIA
    (Faculty of Physical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria., 2023) Abubakar, Hussain Olanrewaju; Ige, Olusegun Omoniyi; Iheme, Kenneth Obinna
    Quality water for use has been abysmally difficult to come by in the Oye Ekiti metropolis. Thus, an aggressive exploration effort toward providing clean water is essential in the area. The study is within the coordinates of longitudes 5 0 41' 40 "E - 5 043' 20"E,and latitudes 70 31'50"N -7 ᵒ 62' 50"N. Thus 9 Horizontal Profiling (HP) traverses, 9 Spontaneous Potentials (SP) traverses, and 31 Vertical Electrical Sounding (VES) points were employed to assess the groundwater potential of the area. The SP identified zonesthat show a peak of varying polarity indicating streaming potential which is evidence of groundwater movement.The movement is majorly directed in the East-to-west axis, indicating the major groundwater flow directions in the area.HP inversions and 2D models from most of the traverses indicate aquiferous layers with average resistivity and depth range of 10.5 – 93.5 Ωm and 50 – 90 m in the area. The geologic sections delineated five subsurface geologic layers; this includes the topsoil, laterites, sandy clay, weathered basement, and fresh basement. The resistivity range of the fresh basement is 535 – 6176 Ωm. The weathered basement is generally thin and constitutes the main aquifer unit within the area. The resistivity low of the weathered basement could indicate enhanced permeability due to significantly fractured density and the tendency for moderate groundwater potential and yield through the groundwater potential map. The area could therefore be said to portray a moderate groundwater potential.