Exploration of Groundwater Resources using Electrical Resistivity Imaging Techniques

Thesis Abstract

Abstract
This thesis presents a comprehensive study on the exploration of groundwater resources using Electrical Resistivity Imaging (ERI) techniques. Groundwater is a vital natural resource that plays a crucial role in sustaining ecosystems, agriculture, industries, and human populations. The availability and quality of groundwater resources have a direct impact on socio-economic development and environmental sustainability. However, the exploration and management of groundwater resources pose significant challenges due to the complex subsurface conditions and limited accessibility. The primary objective of this research is to investigate the application of ERI techniques in mapping and characterizing groundwater resources. ERI is a non-invasive geophysical method that utilizes the variation in electrical resistivity of subsurface materials to delineate geological structures and hydrogeological properties. By integrating ERI with traditional hydrogeological methods, this study aims to enhance the efficiency and accuracy of groundwater exploration. The study begins with a detailed introduction to the importance of groundwater resources, the limitations of existing exploration methods, and the potential benefits of using ERI techniques. The background of the study provides a theoretical framework for understanding the principles of electrical resistivity imaging and its relevance to groundwater exploration. The problem statement highlights the current challenges in groundwater exploration and emphasizes the need for innovative approaches to address these challenges. The research objectives focus on evaluating the effectiveness of ERI techniques in mapping groundwater resources, assessing the hydrogeological properties of the subsurface, and identifying potential areas for sustainable groundwater development. The study also considers the limitations of ERI, such as depth penetration, resolution, and interpretation challenges, and proposes strategies to mitigate these limitations. The scope of the study encompasses field investigations, data collection, laboratory analysis, and interpretation of ERI results in selected study areas. The significance of the study lies in its potential to improve the efficiency and accuracy of groundwater exploration, leading to better resource management and sustainable development practices. The structure of the thesis outlines the organization of chapters and sub-sections, providing a roadmap for readers to navigate through the research findings and discussions. The literature review chapter critically examines existing studies and practices related to ERI applications in groundwater exploration. Key topics include the principles of electrical resistivity imaging, field instrumentation, data processing techniques, interpretation methods, case studies, and best practices in groundwater mapping. The research methodology chapter outlines the procedures and techniques employed in data collection, field surveys, ERI data acquisition, processing, and interpretation. The study includes a detailed description of the study area, site selection criteria, survey design, data acquisition parameters, and quality control measures. The discussion of findings chapter presents the results of ERI surveys, geophysical data interpretation, hydrogeological analysis, and mapping of groundwater resources. The findings are discussed in relation to the research objectives, highlighting the effectiveness of ERI techniques in identifying subsurface structures, aquifer characteristics, and potential groundwater zones. In conclusion, this thesis provides valuable insights into the application of ERI techniques for groundwater exploration, highlighting the benefits, limitations, and future research directions in this field. The study contributes to the advancement of geophysical methods in hydrogeological investigations and offers practical recommendations for sustainable groundwater management practices.