171 pages, 72 b/w illustrations, 10 tables
Gravity surveys have a huge range of applications, indicating density variations in the subsurface and identifying man-made structures, local changes of rock type or even deep-seated structures at the crust/mantle boundary. This important one-stop book combines an introductory manual of practical procedures with a full explanation of analysis techniques, enabling students, geophysicists, geologists and engineers to understand the methodology, applications and limitations of a gravity survey. Filled with examples from a wide variety of acquisition problems, Acquisition and Analysis of Terrestrial Gravity Data instructs students in avoiding common mistakes and misconceptions. It explores the increasing near-surface geophysical applications being opened up by improvements in instrumentation and provides more advance-level material as a useful introduction to potential theory. This is a key text for graduate students of geophysics and for professionals using gravity surveys, from civil engineers and archaeologists to oil and mineral prospectors and geophysicists seeking to learn more about the Earth's deep interior.
List of symbols
1. Gravitational attraction
2. Instruments and data reduction
3. Field acquisition of gravity data
4. Graphical representation of the anomalous field
5. Manipulation of the gravity field
6. Interpretation of density structure
7. Direct inversion
8. Experimental isostasy
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Leland Timothy Long is Emeritus Professor of Geophysics at Georgia Institute of Technology, where he has taught geophysics for over 40 years, on topics including exploration geophysics, potential theory, seismology, data analysis and earth science. He is also a licensed Professional Geologist in Georgia and consults on topics of gravity data interpretation, seismic hazard and blast vibration. Professor Long's research interests in potential methods include the interpretation of regional crustal structures for seismic hazards, deflections of the vertical, statistical properties of gravity field, and microgravity for the detection of sink holes, and his research interests in seismology have emphasized seismicity, seismic networks, induced seismology, many aspects of theoretical seismology related to scattering and scattering inversion, and near-surface surface wave analysis. In 2006, Professor Long was awarded the Jesuit Seismological Association Award honouring outstanding contributions to observational seismology.
Ronald (Ron) Kaufmann is President of Spotlight Geophysical Services in Doral, Florida and has over 19 years of geophysical consulting experience, including positions of Vice President and Senior Geophysicist at Technos, Inc. He is a licensed Professional Geophysicist in California and a Professional Geologist in Tennessee. Mr Kaufmann is an expert in the use of microgravity for karst and geologic hazard investigations and has personally acquired gravity measurements at over 20,000 stations for a variety of near-surface investigations. He has led geophysical projects for environmental, geotechnical and groundwater applications across the US and Latin America, including several comprehensive geophysical investigations for the Panama Canal Third Set of Locks Project. Mr Kaufmann is on the Board of Directors for the Environmental and Engineering Geophysical Society and is a Section Officer for the Association of Environmental and Engineering Geologists.