首页|Quasi-3D modeling of vertical electrical sounding for mapping hard rock aquifers in the Adamawa Yade domain, central Africa
Quasi-3D modeling of vertical electrical sounding for mapping hard rock aquifers in the Adamawa Yade domain, central Africa
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
Elsevier
Exploring water resources in hard rock environments is challenging due to the approach used and the complex weathering processes that control aquifer properties, often leading to inaccurate fracture detection and high borehole failure rates. This study addresses these challenges by applying quasi-3D vertical electrical sounding (VES) techniques to map hard rock aquifers (HRAs) in the Adamawa region of Cameroon, where these aquifers are a critical water source for local communities. Using 28 unevenly distributed VES points, the research developed a quasi-3D model validated against existing borehole data and geoelectric sections. The model revealed key geoelectrical features, including metaconglomerates (1800-2100 S2 m) and a conductive HRA system with resistivity ranging from 500 to 1700 S2 m. This prominent conductive zone identified at depths of 10-40 m suggests the presence of NW-to-NE-oriented dextral strike-slip faults, which facilitate groundwater movement and create horst-and-graben structures. The study also produced a conceptual quasi-3D model illustrating variations in electrical resistivity across the aquifer system, providing a valuable tool for future hydrogeological and geophysical investigations. This model can serve as a guide for managing and protecting the aquifer system from anthropogenic impacts. The findings highlight the usefulness of the quasi-3D VES approach in identifying aquifer systems and fracture patterns in crystalline environments, offering a cost-effective alternative to expensive 3D tools, particularly in low-and middle-income countries. This approach complements traditional 1D VES techniques and demonstrates significant potential for improving groundwater exploration and management in hard rock terrains.
Adamawa yade<acute accent> domainHard rock aquiferGroundwaterVertical electrical soundingQuasi-3D modelCAMEROONGEOCHEMISTRYEVOLUTIONSUBBASINEXAMPLEBENINAREA
Raouf, Abdou、Lu, Xiaohui、Njeudjang, Kasi、Koulibaly, Mohamed、Tsoungui, Philomene Estelle Nga Essomba
展开 >
Hohai University School of Earth Sciences and Engineering||Org African Acad Doctors OAAD
Hohai University School of Earth Sciences and Engineering
NETL
NSTL
Elsevier
