DEVELOPMENT OF 3D MODEL VIEW OF POTENTIAL GROUNDWATER AQUIFER FOR IRRIGATION USING GEOPHYSICAL TECHNIQUE
DOI:
https://doi.org/10.11113/jt.v76.5963Keywords:
2D resistivity, 3D model view, Electrical Tomography Results (ERT), groundwater, irrigationAbstract
A 2D surface electrical resistivity is one of non-destructive methods to investigate groundwater. In this study, 2D resistivity method was used to produce subsurface imaging profiles which are known as ERT (Electrical Resistivity Tomography) at Block C, Sawah Sempadan, Tanjung Karang, Selangor. These ERT profiles were then used to create 3D model view of potential aquifer at the study area. Overall, there were 3 ERT profiles of 1600m for major survey lines and 6 ERT profiles of 400m for minor lines. ERT profiles were then compared to lithology log from nearby tube wells of same geological formation in order to locate potential aquifer location in these profiles. Results show that there were 7 locations of identified potential aquifer in this study area. Later, the resistivity data were added with longitude and latitude data before imported into Voxler to achieve the objective of the study. The 3D model view of skeleton shape was productively built in Voxler as it visibly illustrates the whole subsurface profiles of study area. Locations of potential aquifers were identified in this 3D model view to show the exact location and depth of each potential aquifer.
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