Characterization of aquifer system using Electrical Resistivity Tomography (ERT) and Induced Polarisation (IP) techniques
Document Type
Conference Item
Publication Date
1-1-2021
Abstract
Groundwater plays a major role as an alternative freshwater resource for irrigation and industrial purposes. This study aimed to characterize the subsurface of aquifer systems in TelukIntan district, Perak, Malaysia using Electrical Resistivity Tomography (ERT) and Induced Polarization (IP) methods. The horizontal profiling (TL1 and TL2) was conducted at length of 400 m. The estimated depth is 150 m below ground level (b.g.l.). An ABEM SAS 4000 Terrameter and ABEM LUND ES464 Imaging System were applied to create a resistivity pseudo-section using polar-dipole configuration. The collected geo-electrical data was interpreted using RESIST software with partial curve matching and computer iteration. ERT and IP survey profile results were validated with in-situ borehole data from borehole 2 (B2). Eleven samples of soil profile were collected at depth from 5.6 m to 61.2 m, with average percentage of sand, silt and clay are 93.77 , 5.78 and 0.02 , respectively. The geology of subsurface settings is the key factor in determining the aquifer system characterized by interlayer sand-silt sequence indicating the saturation zone of aquifer underlain by shale at the bottom. Further study on hydraulics perspective is important to understand the overall capacity of the aquifer. © Published under licence by IOP Publishing Ltd.
Keywords
Aaquifer system, Electrical resistivity tomography, ERT, Induced Polarisation, IP
Divisions
GEOLOGY
Funders
None
Publication Title
IOP Conference Series: Earth and Environmental Science
Volume
880
Issue
1
Event Title
4th International Conference on Science and Technology Applications in Climate Change, STACLIM 2021
Event Location
Selangor, Virtual
Event Dates
1 July 2021 - 2 July 2021
Event Type
conference