Principles of Induced Polarization for Geophysical Exploration

PrefaceAcknowledgments1. Introduction A Historical Summary of IP Research The IP Effect IP Response The Decay Curve IP Measurement The Basic IP Measurement ¿ V/V Phase-Angle IP Measurement Errors Units Used in IP Surveying The Glossary2. Resistivity Principles Resistivity Theory Ohm's Law Three-Dimensional Resistivity Resistivity and Conductivity Potential Field of a Current Electrode Pair Refraction of Current Flow Lines Equipotential Surfaces Resistivity Anisotropy Paradox of Anisotropy Superposition and Reciprocity Resistivity Type Curves by the Method of Images Resistivity of Earth Materials Resistivity Properties of Minerals Electrical Conduction in Rocks Resistivity of Mineralized Rocks Resistivity Exploration Methods Resistivity Equipment Self-Potential Resistivity Sounding Resistivity Profiling Pseudosection Plotting3. Theory of Induced Polarization Electrochemical Theory The Electrode Overvoltage The Double Layer Faradaic and Nonfaradaic Paths Warburg Impedance Membrane Polarization Applications of Electrochemical Theory Dielectric Constant Electrical Models of Induced Polarization Equivalent Circuit The Decay Curve Field of a Dipole Electrical Polarization Polarization Induced Polarization Magnetic Induced Polarization The Equivalence of Frequency and Pulse Measurements The Place of IP Theory in the Exploration Method4. Laboratory Work in Induced Polarization Electrical Measurements of Rocks Types of Experiments Sampling and Preparation Electrical Measuring Equipment Environmental Chamber Sample Holders Frequency-Domain Studies Resistivity Spectrum Interpretation of the Resistivity Spectrum Effects of Current Density Effect of Rock Saturation Anisotropism Time-Domain Measurements Charge and Decay Cycles Phase Measurement Early Part of Decay Curve and the Comparison with Frequency Effects Considerations of Laboratory and Field Results5. IP Field Equipment Historical Development Design Considerations Parameters to be Measured Electrode Resistance Voltage and Polarization Signals Noise Characteristics of the Ground The Signal-Gene Rating System Motors and Generators The IP Transmitter The IP Receiver Self-Potential Buckout The Time-Domain Receiver The Frequency IP Receiver Digitized IP Field Equipment Design Considerations from Frequency Analysis of a Square Wave Filtering6. Telluric Noise and Electromagnetic Coupling Telluric (Earth) Currents The Magnetosphere Micropulsations Man-Made Electrical Noise Sferics Methods of Avoiding Magnetotelluric Noise Coupling of Electrical Circuits Resistive Coupling Capacitive Coupling Cultural Coupling Effects Electromagnetic Coupling The EM-Coupling Problem EM Coupling and Phase EM Coupling Relationships - Correction Curve EM Coupling for Small Inductive Effects Using the Dipole-Dipole Array Methods of Avoiding EM Coupling Detection and Identification of EM Coupling7.