12. Imaging/Interpretation Frontiers
Prospective of Groundwater Resource by RIS Investigation: Study Case in Proposed Project of RAMSAR Site, Tasik Bera, Pahang, Malaysia
Rahman Yaccup(1), Lakam Mejus(2) and Umar Hamzah(3)
(1) Malaysian Institute For Nuclear Technology Research (MINT), Malaysia. (2) Malaysian Institute For Nuclear Technology Research (MINT), Malaysia.
Abstract
RAMSAR site is for official setting and worker's residence and needed clean water supply for daily used. However because of the site situated far from the clean water processing plant and the pipeline assemble very costly hence alternative water supply was likely to be used. Source of alternative water that could accommodate water supply straightaway was groundwater resource. Source of groundwater ought to be explored in a manner spread and protected so that the groundwater resource may well be fully used not just simply when the country faced the water crisis but also important for the function of the ecology. Geologically, the area consists of shale, clay and tufaceous sandstone of Semantan Formation aging middle Triassic – Late Triassic. A total of two resistivity imaging lines consists of five resistivity profiles with electrode spacing of 10.0m was established at the study site. Three electrode configurations i.e. Sclumberger, Dipole-dipole and Wenner configuration were used in this study as the comparison to get the higher conviction stage of data for the analysis. The presences of moist in the earth material will caused the resistivity values descend depended whether itÃÔ fresh water, salt water or brackish water. The study site not influenced by salt water and brackish water and this facilitated the analysis by only observed zones that have low resistivity values. This study encountered several locations with low resistivity values that less than 150 Ωm and most probably identified as fractured rock zones that have potential as the groundwater aquifer. The depths of potential zones range between 20m – 100m for surface.<p>KEY WORDS: Electrode configuration, Resistivity imaging, Potential zone
Last modified: Wed May 17 12:21:28 2006