Full-3D Electrical Resistivity Tomography and Induced Polarization for Enhancing Deep Mineral Exploration

2018 ◽  
Author(s):  
C. Truffert ◽  
J. Gance ◽  
O. Leite ◽  
B. Texier
Keyword(s):  
Electrical Resistivity ◽  
Electrical Resistivity Tomography ◽  
Mineral Exploration ◽  
Induced Polarization ◽  
Resistivity Tomography

scholarly journals Electrical Resistivity Tomography And Induced Polarization Study For Groundwater Exploration In The Agricultural Development Areas of Brunei Darussalam

2021 ◽  
Author(s):  
Lieyana Azffri ◽  
Stefan Herwig Gödeke ◽  
Mohammad Faizan Ibrahim
Keyword(s):  
Electrical Resistivity ◽  
Agricultural Development ◽  
Electrical Resistivity Tomography ◽  
Groundwater Exploration ◽  
Induced Polarization ◽  
Resistivity Tomography ◽  
Well Drilling ◽  
Brunei Darussalam ◽  
Groundwater Yield ◽  
2D Resistivity

Abstract Electrical Resistivity Tomography (ERT) and Induced Polarization (IP) study was carried out for groundwater exploration at eight agricultural development areas in Brunei Darussalam. The study was undertaken to meet the growing demands of water supply in the Brunei agricultural sector, particularly for paddy field irrigation. A total of nineteen survey lines with survey lengths of up to 800 m and investigation depths of up to 150 m below ground level were conducted to delineate subsurface geological structures, formations and aquifer zones in the study area. Aquifer zones with resistivity values ranging from 1 to 100 ohm-m and chargeability values of less than 1 mV/V were detected in all surveyed locations. New groundwater well drilling was conducted at two of the surveyed sites based on interpretations of 2D resistivity and chargeability inversion models. Water well drilling encountered aquifer zones, which were primarily in sandy layers. Hydraulic tests revealed groundwater yields of 4.3 and 288 m³/day. Estimated transmissivity values of the aquifer units based on pumping tests are 0.53 and 109 m²/day, while their hydraulic conductivity values are 0.05 and 2.75 m/day. Estimated parameters of the aquifer units indicate weak to moderate groundwater yield for withdrawal and distribution for irrigation purposes at the investigated sites. The present study helped decision-makers take suitable measures for placing future irrigation wells and achieve significant groundwater exploration results in the study area.

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