| Edition |
Second edition. |
| Description |
1 online resource. |
|
text file |
| Series |
Geology and mineralogy research developments
|
|
Geology and mineralogy research developments.
|
| Bibliography |
Includes bibliographical references (pages 345-352) and index. |
| Contents |
1. Introduction to environmental geophysics ; Introduction -- Aims and scope of the book -- Five stages in planning and executing a geophysical survey -- Stage I : initial planning -- Stage II : site characterization -- Stage III : data collection -- Stage IV : post-survey processing and visual formats display -- Stage V : report presentation -- 2. Gravity geophysical technique ; Introduction -- Density variations in the near subsurface -- Measuring absolute and relative gravity -- Gravity on a rotating Earth -- Corrections to gravity data -- Summary of corrections -- Gravity anomalies associated with regular shaped bodies -- Direct interpretation of gravity anomalies -- Processing gravity data -- Applications of gravity surveying -- |
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5. Electromagnetic geophysical techniques I ; Introduction -- Terminology and basic concepts of EM surveying -- Very low frequency (VLF) survey -- VLF surveying equipment -- Presentation of VLF data -- Instrument types for constant frequency EM survey -- Effects of dipole orientation -- Theoretical background to constant frequency EM instruments -- Time domain electromagnetic survey (TDEM) -- Applications of EM surveys -- 6. Electromagnetic geophysical techniques II : ground penetrating radar ; Introduction -- Important considerations in the acquisition of radar data -- Main components and types of GPR systems -- Deployment modes of GPR systems -- Main components of a radar profile -- Subsurface properties -- GPR survey parameters -- Processing of GPR data -- Applications of GPR surveys -- |
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7. Seismic geophysical techniques ; Introduction -- Theoretical concepts -- Seismic surveying equipment -- Noise on seismic surveys -- Seismic wave refraction -- Considerations for seismic refraction surveys -- Seismic wave reflection -- Applications of seismic surveys -- 8. Other geophysical techniques employed in environmental studies ; Introduction -- Radiometric surveys -- Radiometric surveying -- Magnetotelluric surveys -- Borehole logging -- Logging methodology -- Spontaneous potential (SP) log -- Cross-hole measurements. |
| Summary |
Geophysical techniques provide useful information about the subsurface with suitable techniques chosen for particular environments or problems. Thus resistivity would be considered more useful than gravity for the detection of contaminant plumes whereas gravity is ideal for the detection of cavities. There are two major advantages in adopting a geophysical approach to studying the subsurface: the non-destructive and very cost-effective nature of most geophysical surveys. This book should be of great benefit to undergraduate and postgraduate students who are taking geology or geophysics courses. It is also aimed at a wider audience, those who need to know what exists below the surface and those to whom the state of that subsurface, and hence to a large extent our environmental well being, is important. Geophysics is a science that transcends the usual disciplinary boundaries, so this book will also be beneficial for engineers, geologists, planners, archaeologists, hydrologists, geographers and environmental scientists. Equations in this book are restricted to those that are essential to provide a better understanding of a particular technique or specific theoretical concept. High school mathematics is all that is required to comprehend their use. |
| Local Note |
eBooks on EBSCOhost EBSCO eBook Subscription Academic Collection - North America |
| Contents |
3. Magnetic geophysical technique ; Introduction -- Basic magnetic principles -- Susceptibility of rocks and minerals -- Remanent magnetism -- Earth's magnetic field -- Secular variation of the Earth's magnetic field -- Paleomagnetism and apparent polar wandering curves -- Magnetic field reversals -- Origin of the Earth's magnetic field -- Magnetic surveying techniques -- Airborne and shipborne magnetic survey -- Processing magnetic data -- Magnetic anomaly patterns -- Depth estimates -- Gradiometer measurements -- Applications of magnetic surveying -- 4. Electrical geophysical technique ; Introduction -- Basic electrical theory -- Resistivity of substances -- Current flow and current density in a non-homogeneous medium -- Advantages and disadvantages of various electrode arrays -- Resistivity surveying equipment -- Resistivity surveying techniques -- Resistivity profiling -- Vertical electrical sounding (VES) -- Spontaneous potential (SP) surveying -- Induced polarization (IP) surveying -- IP surveying and display of IP data -- Applications of IP surveys -- |
| Language |
English. |
| Subject |
Geophysics -- Technique.
|
|
Geophysics -- Technique. |
|
Geophysics. |
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Geophysics -- Environmental aspects.
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Geophysics -- Environmental aspects. |
| Genre/Form |
Electronic books.
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|
Electronic books.
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| Added Author |
Gibson, Paul J. (Paul Jude), 1954-
|
|
George, Dorothy M.
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| Other Form: |
Print version: Environmental applications of geophysical surveying techniques New York : Nova Publishers, [2013] 9781626184459 (hardcover) (DLC) 2013009424 |
| ISBN |
9781626184527 (ebook) |
|
9781626184459 (hardcover) |
|
1626184453 |
|
1626184526 |
|
9781626184527 |
|
