Application of geoelectrical method
for groundwater investigations
Presenter: Fang-Ming Hsu                            Adviser: Chien-Chih Chen

Abstract
Electrical resistivity surveying methods have been widely used to determine the thickness and resistivity of layered media for the purpose of assessing groundwater potential and siting boreholes in fractured unconfined aquifer. There are two studies about the investigations of groundwater resources. The first survey was conducted in the city of Bulawayo, Zimbabwe. The parallel N-S oriented electrical resistivity Tomography(ERT) lines were surveyed, and an ERT line was surveyed along the E-W direction. In addition, Vertical Electrical Sounding(VES) were performed to obtain deeper measurement. The second survey was conducted in the Western Desert of Egypt. Twenty-eight transient electromagnetic(TEM) soundings, three VES and three ERT profiles were carried out around the study area. The results of two studies well demonstrated the efficiency of using electrical resistivity method in investigating subsurface structure and groundwater resources.

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