Lecture 1: Introduction: An overview of field geophysics
1. Site characterization
2. Types of field geophysical targets: fixed and mobile
2.1. landfills contaminant plumes
2.2. conduits, fractures and voids
2.3. groundwater, aquifer characterization
2.4. buried objects, utility lines, unexploded ordnance (UXO)
2.5. soil stratigraphy, earthquake liquefaction features
2.6. petroleum exploration
Lecture 2: Physical properties of near-surface geological materials
1. Magnetic properties
2. Low frequency electrical properties
3. Archie’s law, Waxman-Smits equation
4. Electrical conductivity and hydraulic conductivity
5. Kozeny-Carman relationship
6. Electrical properties of organically contaminated soils
Lecture 3: 1. Derivation of Maxwell equations from basic physic laws
2. Helmholtz equation
3. Boundary conditions
4. Electromagnetic parameters
Lecture 4: Direct current (DC) Resistivity I
1. Introduction
2. Current flow in inhomogeneous ground
3. Current flow in layered media
4. Schlumberger, Wenner, dipole-dipole, pole-dipole arrays
Lecture 5: Direct current (DC) Resistivity II
1. Field methods: profiling, sounding, instrumentation
2. Data interpretation with examples
3. Case histories: landfill site characterization, fracture mapping
Lecture 6: Geomagnetic Methods
1. Fundamentals of geomagnetic field
2. Soil and rock magnetism
3. Magnetization and buried magnetic targets
4. Magnetic prospecting
5. Field example: buried metals detection
Lecture 7: Electromagnetic Induction I
1. Introduction
2. Basic Theory: laws of Ohm, Ampere and Faraday
3. Direct vs. inductive coupling
4. Frequency domain vs. time domain systems
5. Smoke-ring diffusion
6. Mutual coupling of coils: LR circuit analogy of an EM system
7. Case histories: landfill characterization, brine migration
Lecture 8: Seismic Exploration and Microtremors
1. Principles of seismic exploration
2. Refraction
3. Reflection
4. Surface wave
5. Microtremor
Lecture 9: Ground-penetrating Radar I
1. Introduction
2. EM wave propagation: velocity, attenuation
3. Dielectric properties
4. Loss mechanisms
5. GPR systems
6. Noise, including clutter, ringing, and scattering from inhomogeneities
7. Case histories: soil stratigraphy
Lecture:10 Borehole Geophysics
1. Geophysical well logging
2. Electrical resistance tomography
3. Borehole radar tomography
4. Case history: Borehole radar monitoring saline water transport
