The Magnetotelluric Method -

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Résumé :
The magnetotelluric method is a technique for imaging the electrical conductivity and structure of the Earth, from the near surface down to the 410 km transition zone and beyond. This book forms the first comprehensive overview of magnetotellurics, from the salient physics and its mathematical representation to practical implementation in the field, data processing, modeling and geological interpretation. Electromagnetic induction in 1-D, 2-D and 3-D media is explored, building from first principles, and with thorough coverage of the practical techniques of time series processing, distortion, numerical modeling and inversion. The fundamental principles are illustrated with a series of case histories describing geological applications. Technical issues, instrumentation and field practices are described for both land and marine surveys. This book provides a rigorous introduction to magnetotellurics for academic researchers and advanced students, and will be of interest to industrial practitioners and geoscientists wanting to incorporate rock conductivity into their interpretations....

Sommaire:
Preface; List of contributors; 1. Introduction to the magnetotelluric method Alan D. Chave and Alan G. Jones; 2. The theoretical basis for electromagnetic induction Alan D. Chave and Peter Weidelt; 3. Earth's magnetic environment: 3A. Conductivity of Earth materials Rob L. Evans; 3B. Description of the magnetospheric/ionospheric sources Ari Viljanen; 4. The magnetotelluric response function Peter Weidelt and Alan D. Chave; 5. Estimation of the magnetotelluric response function Alan D. Chave; 6. Distortion of magnetotelluric data: its identification and removal Alan G. Jones; 7. The 2D and 3D forward problems Chester Weiss; 8. The inverse problem William L. Rodi and Randall L. Mackie; 9. Instrumentation and field procedures Ian Ferguson; 10. Case histories and geological applications Ian Ferguson, Alan G. Jones and Alan D. Chave; Index.