Thesis Abstract

Abstract
This thesis investigates the delineation of subsurface structures using Electrical Resistivity Tomography (ERT) in an urban environment. The study aims to address the challenges associated with characterizing subsurface structures in urban areas, where complex geology and anthropogenic activities can impact the interpretation of ERT data. The research methodology involved conducting ERT surveys at multiple sites within an urban setting, analyzing the data using advanced inversion techniques, and correlating the results with ground truth information from borehole logs and geotechnical investigations. Chapter One provides an introduction to the research topic, outlining the background of the study, problem statement, objectives, limitations, scope, significance, structure of the thesis, and definitions of key terms. The chapter sets the foundation for understanding the need for accurate subsurface characterization in urban areas and the role of ERT in achieving this objective. Chapter Two presents a comprehensive literature review that covers ten key aspects related to ERT applications in urban environments. The review synthesizes existing knowledge on the principles of ERT, data acquisition methods, interpretation techniques, challenges specific to urban settings, and case studies highlighting successful applications of ERT for subsurface mapping in similar contexts. Chapter Three details the research methodology employed in this study, including the selection of study sites, ERT survey design, data acquisition protocols, data processing steps, inversion algorithms utilized, and validation techniques applied. The chapter also discusses the integration of ERT data with geotechnical information to enhance the accuracy of subsurface structure delineation. Chapter Four presents a detailed discussion of the findings obtained from the ERT surveys conducted in the urban environment. The chapter analyzes the interpreted subsurface structures, identifies key geological features, evaluates the resolution and accuracy of the ERT results, and discusses the implications of the findings for urban planning, infrastructure development, and environmental management. Chapter Five provides a conclusion and summary of the thesis, highlighting the key findings, contributions to the field of geophysics, implications for urban subsurface characterization, and recommendations for future research directions. The chapter emphasizes the importance of integrating ERT with other geophysical and geotechnical methods to enhance the understanding of subsurface structures in urban areas and support sustainable urban development practices. Overall, this thesis contributes to the advancement of geophysical techniques for subsurface mapping in urban environments and demonstrates the effectiveness of ERT in delineating complex geological features beneath urban settings. The findings have practical implications for urban planning, infrastructure design, and environmental assessment, emphasizing the significance of accurate subsurface characterization for sustainable urban development.

Thesis Overview

The project titled "Delineation of Subsurface Structures Using Electrical Resistivity Tomography in an Urban Environment" focuses on the application of electrical resistivity tomography (ERT) as a geophysical method to investigate subsurface structures in urban settings. Urban environments present unique challenges for subsurface investigations due to the presence of complex infrastructure, utilities, and varying geological conditions. The use of ERT in urban areas offers a non-invasive and cost-effective solution to map subsurface structures such as bedrock, soil layers, groundwater levels, and potential hazards. The research aims to address the limitations and challenges associated with traditional subsurface investigation methods in urban areas by utilizing ERT technology. By conducting a thorough literature review, the project will explore the existing knowledge and applications of ERT in urban settings, highlighting its advantages and limitations. This will provide a comprehensive background for understanding the significance of using ERT for subsurface delineation in urban environments. The project will define the problem statement, emphasizing the need for accurate and efficient subsurface mapping in urban areas for various purposes such as construction, infrastructure development, environmental assessments, and hazard mitigation. The objectives of the study will be clearly outlined, focusing on the specific goals to be achieved through the application of ERT technology. The scope of the study will be defined to outline the boundaries and limitations of the research, including the specific urban area of interest, the depth of investigation, and the target subsurface structures. The significance of the study will be highlighted, demonstrating the practical implications and benefits of using ERT for subsurface delineation in urban environments, such as improved planning, design, and risk assessment. The research methodology section will detail the approach and techniques to be employed in conducting the ERT survey, data collection, processing, and interpretation. Various aspects of the methodology, including survey design, equipment selection, data analysis software, and quality control measures, will be discussed to ensure the reliability and accuracy of the results. The discussion of findings section will present the results of the ERT survey, including subsurface images, resistivity profiles, and interpretations of the identified structures. The implications of the findings will be discussed in relation to the research objectives, highlighting the practical applications and insights gained from the subsurface mapping. In the conclusion and summary section, the key findings, implications, and recommendations of the study will be summarized, emphasizing the contributions to the field of geophysics and urban planning. The conclusion will also reflect on the challenges encountered during the research and suggest areas for further investigation and improvement in the application of ERT for subsurface delineation in urban environments. Overall, the project on "Delineation of Subsurface Structures Using Electrical Resistivity Tomography in an Urban Environment" aims to advance the understanding and application of ERT technology for subsurface investigations in urban settings, contributing valuable insights to the fields of geophysics, urban planning, and infrastructure development.