scholarly journals Aquifer potential of the transboundary crystalline-sedimentary complexes: from Northcentral Nigeria to Northwestern Cameroon border

Water Science ◽  
2021 ◽  
Vol 35 (1) ◽  
pp. 165-185
Author(s):  
S.N Ukpai
Keyword(s):  
Sensors ◽  
2019 ◽  
Vol 19 (9) ◽  
pp. 2107 ◽  
Author(s):  
Jamilu Bala Ahmed II ◽  
Biswajeet Pradhan ◽  
Shattri Mansor ◽  
Zainuddin M. Yusoff ◽  
Salamatu Abraham Ekpo

In some parts of tropical Africa, termite mound locations are traditionally used to site groundwater structures mainly in the form of hand-dug wells with high success rates. However, the scientific rationale behind the use of mounds as prospective sites for locating groundwater structures has not been thoroughly investigated. In this paper, locations and structural features of termite mounds were mapped with the aim of determining the aquifer potential beneath termite mounds and comparing the same with adjacent areas, 10 m away. Soil and species sampling, field surveys and laboratory analyses to obtain data on physical, hydraulic and geo-electrical parameters from termite mounds and adjacent control areas followed. The physical and hydraulic measurements demonstrated relatively higher infiltration rates and lower soil water content on mound soils compared with the surrounding areas. To assess the aquifer potential, vertical electrical soundings were conducted on 28 termite mounds sites and adjacent control areas. Three (3) important parameters were assessed to compute potential weights for each Vertical Electrical Sounding (VES) point: Depth to bedrock, aquifer layer resistivity and fresh/fractured bedrock resistivity. These weights were then compared between those of termite mound sites and those from control areas. The result revealed that about 43% of mound sites have greater aquifer potential compared to the surrounding areas, whereas 28.5% of mounds have equal and lower potentials compared with the surrounding areas. The study concludes that termite mounds locations are suitable spots for groundwater prospecting owing to the deeper regolith layer beneath them which suggests that termites either have the ability to locate places with a deeper weathering horizon or are themselves agents of biological weathering. Further studies to check how representative our study area is of other areas with similar termite activities are recommended.


2019 ◽  
Vol 142 ◽  
pp. 85-95 ◽  
Author(s):  
Fabian Böttcher ◽  
Alessandro Casasso ◽  
Gregor Götzl ◽  
Kai Zosseder

Heliyon ◽  
2019 ◽  
Vol 5 (7) ◽  
pp. e01927 ◽  
Author(s):  
I.A. Kwami ◽  
J.M. Ishaku ◽  
S. Mukkafa ◽  
A.I. Haruna ◽  
B.A. Ankidawa

2016 ◽  
Vol 88 (7) ◽  
pp. 644-651 ◽  
Author(s):  
Daniel N. Obiora ◽  
Usman D. Alhassan ◽  
Johnson C. Ibuot ◽  
Francisca N. Okeke
Keyword(s):  

2019 ◽  
Vol 3 (2) ◽  
pp. 146
Author(s):  
Fajar Rakhmanto ◽  
Arif Yudo Pradana ◽  
Nicho Andreas Fernando

Desa Karanganyar, Kecamatan Bantaran, Kabupaten Probolinggo merupakan salah satu daerah kekeringan. Daerah ini tersusun oleh lapisan produk Gunungapi Tengger yang terdiri dari tuff, breksi gunungapi, lava, dan lahar. Kondisi tersebut memungkinkan daerah tersebut mengalami krisis akan air tanah karena lapisan produk gunungapi memiliki karakteristik impermiabel atau kedap air. Untuk itu diperlukan penelusuran mengenai informasi dasar tentang letak keberadaan air tanah dengan cara survey geofisika menggunakan metode geolistrik resistivitas. Penelitian ini bertujuan untuk mengkaji potensi keberadaan air tanah di lokasi penelitian dan mengetahui kondisi litologi bawah permukaan dengan metode geolistrik tahanan jenis menggunakan konfigurasi Wenner dan Schlumberger. Berdasarkan hasil penelitian diketahui litologi penyusun di daerah pengukuran berupa batuan vulkanik (lempung tuffan, tuff, lahar tuffan, breksi, dan lava). Batuan yang berpotensi mengandung akuifer yaitu batuan lahar tuffan. Batuan lahar tuffan tersebar di ketiga titik pengukuran sehingga ketiga titik tersebut memiliki potensi akuifer. Pada titik KRA-1 akuifer yang dapat dijumpai diduga terdapat pada kedalaman 37,1 – 102,3 meter dengan nilai resistivitas 60,3 – 171,5 ohm meter, titik KRA-2 pada kedalaman 92,8 – 143,9 meter dengan nilai resistivitas 50,2 – 62,9 ohm meter, dan titik KRA-3 pada kedalaman 63,4 – 133,15 meter dengan nilai resistivitas 62,6 – 119,5 ohm meter.Kata Kunci: Karanganyar; Bantaran; Probolinggo; geolistrik; akuifer ABSTRACT Karanganyar Village, Bantaran District, Probolinggo Regency is one of the drought areas. This area is composed of layers of Tengger Volcano products consisting of tuff, volcanic breccias, lava, and lava. These conditions allow the area to experience a crisis of groundwater because the volcanic product layer has impermiable or waterproof characteristics. For this reason it is necessary to search for basic information about the location of the presence of groundwater by geophysical survey using the resistivity geoelectric method. This study aims to examine the potential presence of groundwater in the study site and determine the conditions of subsurface lithology with the geoelectric resistivity method using the Wenner and Schlumberger configurations. Based on the research results, it is known that the lithology of the constituents in the measurement area is volcanic rock (tuffan clay, tuff, lava tuffan, breccia, and lava). Rocks that have the potential to contain aquifers are tuffan lava rocks. Tuffan lava rocks are scattered in all three measurement points so that all three points have an aquifer potential. At the point of KRA-1 aquifer that can be found is suspected to be at a depth of 37.1 - 102.3 meters with a resistivity value of 60.3 - 171.5 ohm meters, a KRA-2 point at a depth of 92.8 - 143.9 meters with a value of resistivity 50.2 - 62.9 ohm meters, and KRA-3 points at depths of 63.4 - 133.15 meters with resistivity values of 62.6 - 119.5 ohm meter.


2019 ◽  
Vol 9 (4) ◽  
Author(s):  
Bhesh Raj Thapa ◽  
Surendra Raj Shrestha ◽  
Romulus Okoth Okwany ◽  
Madhu Neupane

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