Gravity and Magnetic Exploration : Principles, Practices, and Applications.

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Preface; Objectives of this book; Related books; Organization of this book; Study questions and exercises; Units; Acknowledgements; 1 Introduction; 1.1 Overview; 1.2 The Earth and its planetary force fields; 1.3 Basis of the gravity and magnetic methods; 1.3.1 Gravity; 1.3.2 Magnetics; 1.4 Foundations of geophysical methods; 1.5 Geophysical practices; 1.5.1 Planning phase; 1.5.2 Data acquisition phase; 1.5.3 Data processing phase; 1.5.4 Interpretation phase; 1.6 Nature of geophysical data; 1.6.1 Data documentation; 1.6.2 Data errors; 1.7 Key concepts; Part I Gravity exploration.

2 The gravity method2.1 Overview; 2.2 Role of the gravity method; 2.3 The Earth's gravity field; 2.3.1 Gravitational force; 2.3.2 Gravity units; 2.3.3 Basis of the gravity method; 2.3.4 Spatial variations; 2.3.5 Temporal variations; 2.3.6 Measurement; 2.4 History of the gravity method; 2.5 Implementing the gravity method; 2.5.1 Planning phase; 2.5.2 Data acquisition phase; 2.5.3 Data processing phase; 2.5.4 Interpretation phase; 2.5.5 Reporting phase; 2.6 Key concepts; 3 Gravity potential theory; 3.1 Overview; 3.2 Introduction; 3.3 Gravity effects of a point mass.

3.4 Gravity effects of an extended body3.5 Idealized source gravity modeling; 3.6 General source gravity modeling; 3.6.1 Generic 2D modeling procedures; 3.6.2 Generic 3D modeling procedures; 3.6.3 Least-squares 3D modeling; 3.6.4 Least-squares 2D modeling; 3.6.5 Least-squares modeling accuracy; 3.6.6 Least-squares modeling in spherical coordinates; 3.7 Gauss' law; 3.8 Gravity anomaly ambiguity; 3.9 Poisson's theorem; 3.10 Pseudoanomalies; 3.11 Key concepts; 4 Density of Earth materials; 4.1 Overview; 4.2 Introduction; 4.3 Types of densities; 4.3.1 True density; 4.3.2 Bulk density.

4.3.3 Natural density4.4 Density of the Earth's interior; 4.5 Rock densities; 4.5.1 Lithology; 4.5.2 Lithostatic pressure and void space; 4.5.3 Temperature; 4.5.4 Summary; 4.6 Density measurements; 4.6.1 Laboratory measurements; 4.6.2 Gravity measurements; 4.6.3 Correlative property measurements; 4.7 Density tabulations; 4.8 Key concepts; 5 Gravity data acquisition; 5.1 Overview; 5.2 Introduction; 5.3 Measuring gravity; 5.3.1 Land surface measurements; 5.3.2 Moving platform measurements; 5.3.3 Gravity gradiometry; 5.3.4 Absolute gravity; 5.3.5 Navigation control; 5.4 Gravity surveying.

5.4.1 Survey design5.4.2 Survey procedures; 5.5 Gravity measurements from space; 5.5.1 Passive measurements; 5.5.2 Active measurements; 5.5.3 Satellite gravity mapping progress; 5.6 Key concepts; 6 Gravity data processing; 6.1 Overview; 6.2 Introduction; 6.3 Extraneous gravity variations; 6.3.1 Temporal variations; 6.3.2 Datums; 6.3.3 Latitude variation; 6.3.4 Atmospheric mass correction; 6.3.5 Height effect; 6.3.6 Mass effect; 6.3.7 Terrain effect; 6.3.8 Miscellaneous effects; 6.4 Gravity anomalies; 6.4.1 Fundamental elements; 6.4.2 Classes of gravity anomalies.

6.5 Anomaly isolation and enhancement.

This combined textbook and reference manual introduces key topics and techniques in gravity and magnetic exploration, with practical online resources.

Includes bibliographical references and index.

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