Subsurface Characterization Using Ground and Underwater Resistivity Techniques for Groundwater Abstraction

Abstract:

A geophysical method was used in studying the subsurface profile for investigating the aquifer existence at Jenderam Hilir, Selangor, Malaysia. The 2-D electrical resistivity technique is to determine the presence of aquifer suitable for groundwater abstraction. Resistivity was measured through an ABEM SAS 4000 Terrameter and ABEM Terrameter LS. 2-D electrical-imaging resistivity data of subsurface profile for each survey line were calculated inverse modelling, validate by borehole data which showed the lithology: sandy clay to sandy silt sediments more than 3 m deep, composed of alternating layers of silty and sand. The aquifer potential are mostly in silty sand zones which resistivity value should be within 60-800 ohm-m. Based on interpretation, a potential water-bearing aquifer was located at a depth of 3 m and below which is good agreement with interpreted results. 2-D underwater resistivity survey lines were conducted across the ground and river. Resistivity image was interpreted as silty sand under the river bed, which the subsurface aquifer on land has a physical contact with surface water. Result has shown that ground and underwater resistivity technique can be used as alternative method in finding a good location for groundwater abstraction.

• Periodical: Applied Mechanics and Materials (Volume 802)
• Pages: 629-633
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.802.629
• Online since: October 2015
• Authors: Rais Yusoh*, Md Azlin Md Said, Mohd Ashraf Mohamad Ismail, Mohd Firdaus Abdul Razak
• Keywords: Aquifer, Ground Resistivity, Soil Suitability, Underwater Resistivity

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