The geoelectrical methods in geophysical exploration
著者
書誌事項
The geoelectrical methods in geophysical exploration
（Methods in geochemistry and geophysics, 31）
Elsevier, 1994
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注記
Includes bibliographical references and index
内容説明・目次
内容説明
This volume deals with electrical methods as used in applied geophysics. There are 14 chapters. The first four chapters comprise a handbook of information needed in applied electrical geophysics. The next three chapters deal with three standard techniques: Direct Current (DC), Magnetotelluric (MT) and Controlled-Source Electromagnetic (EM) methods. Chapters 8-11 develop important aspects of the subject which are common to all three standard techniques. These common aspects include ambiguity and insensitivity, data acquisition, modelling and simulation, and interpretation. Chapters 12 and 13 cover experience with electrical methods in the solution of a wide variety of practical problems.
目次
- Part 1 Electrical methods in geophysics: in the beginning
- the mind set
- and the future. Part 2 General concepts of electromagnetic field behaviour: Maxwell's equations
- diffusing electromagnetic fields
- static electromagnetic fields
- quasi-stationary electromagnetic fields. Part 3 Properties of rocks and minerals: properties and units
- properties in a parametric sense
- properties in an existential sense
- geoelectrical mesostructures and megastructures
- electrical properties of the atmosphere and the ocean. Part 4 Electromagnetic environment of planet Earth: Earth currents of external origin
- industrial noise
- atmospheric electric sources
- mechanically generated electric fields
- extraneous sources of electric fields
- electromagnetic fields generated by the oceans. Part 5 Direct current and induced polarization methods: point and dipole sources on a uniform Earth
- electric fields in one-dimensional Earth structures
- fields of a point source for two- and three-dimensional structures
- vertical electric sounding and apparent resistivity
- induced polarization
- magnetic field measurements. Part 6 Natural-field electromagnetic methods: the Tikhonov-Cagniard approach
- linearity of relationships between components of the magnetotelluric field
- electromagnetic fields in a horizontally homogenous medius
- electromagnetic fields in horizontally inhomogeneous media
- magnetotelluric and magnetovariational survey methods
- data reduction
- interpretation of MT data
- interpretation of MVP and GDS data. Part 7 Controlled source electromagnetic methods: principles of controlled source electromagnetic methods
- electromagnetic sounding
- electromagnetic profiling. Part 8 Modelling and simulation: exact analytical solutions for special cases
- thin sheet models
- the integral equation method
- finite difference modelling
- finite element method
- physical and analog modelling
- other approaches to modelling. Part 9 Insensitivity and ambiguity: insensitivity for a laterally uniform Earth
- ambiguity for a laterally uniform Earth. Part 10 Practical aspects of data acquisition: sources
- detection of electric and magnetic fields
- sampling
- filtering
- survey design. Part 11 Interpretation: rules, intuition and pragmatic interpretation
- pseudo-inversion of soundings by transformation
- inversion
- continuation of electromagnetic fields
- electromagnetic migration
- comprehensive three-dimensional interpretation. Part 12 Other platforms, other methodologies: airborne electromagnetic (AEM) methods
- marine electrical surveys
- bore hole assisted methods
- spontaneous polarization (SP) method
- ground penetrating radar (GPR)
- the piezoelectric method (PEP). Part 13 A baker's dozen of case histories: minerals exploration - Que River Deposit, Tasmania, Australia
- physical volcanology - Oshima volcano, Japan
- groundwater exploration - Apodi Valley, Rio Grande do Norte, Brazil. (Part Contents).
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