
Explore the principles and basic concepts of geophysical surveying methods, with a geology focus, in this introductory lecture.
Geophysics blends geology and physics to study subsurface conditions using non-invasive methods. It uses seismic, gravity, magnetic, and electrical techniques to reveal rock layers and resources.
Explore geophysical surveying methods for prospecting, covering active and passive techniques such as seismic, gravity, magnetic, radiometric, electrical, and electromagnetic methods, including potential-field and IP methods.
Explore the anomaly concept in geophysics by analyzing deviations in gravity and density measurements to identify subsurface targets and distinguish background from dense bodies using resistivity.
Learn how to plan and execute geophysical data acquisition, choose measurement methods, set traverse lines and spacing, and optimize data resolution to accurately image subsurface targets.
Process geophysical data after acquisition by removing artifacts, reducing noise, and enhancing the signal with methods like stacking and migration to improve resolution.
Explore how electric resistivity, conductivity, magnetism, gravity, and seismic methods reveal subsurface structures and density contrasts. Apply these geophysical prospecting methods to assess aquifer thickness, bedrock depth, and subsurface features.
Identify, assess, select and apply geophysical methods to solve environmental and groundwater problems, leveraging magnetic and electrical properties to map subsurface features, process data, and deliver actionable recommendations.
Explore recent geophysical investigations through concrete case studies, data-driven modeling, and interpretation techniques that map subsurface features, compare observed and theoretical models, and visualize results.
GEOPHYSICAL SURVEYING METHODS - AN INTRODUCTION
About This Course
This course is aimed at discussing the principles and methods of geophysical exploration and their Applications. The course teaches the concept and basic principles of geophysics from a very simple and easily understandable perspective (all of these are not taught in isolation of geology or geologic interpretations).
Overview
i. General Introduction of the subject of Geophysics in terms of its definition and Concepts were discussed.
ii. The various methods of Geophysics and the discussion of the physical properties and parameters on which these methods are based and utilized with brief discussion on some of the end products (geologic information) obtainable from them.
iii. A brief discussion of the theory, the field operations, interpretation and applications of each of the more frequently used methods.
iv. Case studies of typical field works: the following were presented; statement of problem or field work objectives, obtained data, interpretations and recommendations.
Course Content
Module 1: What is Geophysics
Module 2: Geophysical Prospecting Methods 1
Module 3: Anomaly Concept in Geophysics
Module 4: Geophysical Data Acquisition
Module 5: Geophysical Data Processing
Module 6: Geophysical Prospecting methods 2
Module 7: What does a Geophysicist do?
Module 8: Recent Case Studies of Geophysical Research works.