Details

<p>Preface to the First Edition ix</p> <p>Preface to the Second Edition x</p> <p>Preface to the Third Edition xii</p> <p>Preface to the Fourth Edition xiv</p> <p><b>1 Introduction 1</b></p> <p>1.1 What Geophysics Measures 1</p> <p>1.2 Fields 1</p> <p>1.3 Geophysical Survey Design 9</p> <p>1.4 Geophysical Fieldwork 14</p> <p>1.5 Geophysical Data 19</p> <p>1.6 Bases and Base Networks 29</p> <p>1.7 Real-Time Profiling 32</p> <p><b>2 Gravity Method 39</b></p> <p>2.1 Physical Basis of the Gravity Method 39</p> <p>2.2 Gravity Meters 41</p> <p>2.3 Gravity Reductions 49</p> <p>2.4 Gravity Surveys 52</p> <p>2.5 Field Interpretation 61</p> <p><b>3 Magnetic Method 65</b></p> <p>3.1 Magnetic Properties 65</p> <p>3.2 The Magnetic Field of the Earth 67</p> <p>3.3 Magnetic Instruments 72</p> <p>3.4 Magnetic Surveys 75</p> <p>3.5 Simple Magnetic Interpretation 81</p> <p><b>4 Radiometric Surveys 85</b></p> <p>4.1 Natural Radiation 85</p> <p>4.2 Radiation Detectors 90</p> <p>4.3 Radiometric Surveys 92</p> <p><b>5 Electric Current Methods: General Considerations 97</b></p> <p>5.1 Resistivity and Conductivity 97</p> <p>5.2 Varying Currents 102</p> <p><b>6 Resistivity Methods 109</b></p> <p>6.1 DC Survey Fundamentals 109</p> <p>6.2 DC Practicalities 117</p> <p>6.3 Resistivity Profiling 122</p> <p>6.4 Resistivity Depth-Sounding 125</p> <p>6.5 Electrical Resistivity Imaging (ERI) 128</p> <p>6.6 Capacitive Coupling 133</p> <p><b>7 SP and IP 137</b></p> <p>7.1 SP Surveys 137</p> <p>7.2 Polarisation Fundamentals 140</p> <p>7.3 Time-Domain IP Surveys 143</p> <p>7.4 Frequency-Domain Surveys 144</p> <p>7.5 IP Data 146</p> <p><b>8 Electromagnetic Methods 149</b></p> <p>8.1 Two-Coil CW Systems 149</p> <p>8.2 CWEM Conductivity Mapping 158</p> <p>8.3 Fixed-Source Methods 161</p> <p>8.4 Transient Electromagnetics 165</p> <p><b>9 Remote-Source Electromagnetics 171</b></p> <p>9.1 Natural Electromagnetic Radiation 171</p> <p>9.2 Controlled-Source Audio-Magnetotellurics (CSAMT) 180</p> <p><b>10 Ground Penetrating Radar 185</b></p> <p>10.1 Radar Fundamentals 185</p> <p>10.2 GPR Surveys 199</p> <p>10.3 Data Processing 205</p> <p><b>11 Siesmic Methods: General Considerations 211</b></p> <p>11.1 Seismic Waves 211</p> <p>11.2 Seismic Sources 216</p> <p>11.3 Detection of Seismic Waves 222</p> <p>11.4 Recording Seismic Signals 226</p> <p><b>12 Seismic Reflection 229</b></p> <p>12.1 Reflection Theory 229</p> <p>12.2 Reflection Surveys 233</p> <p><b>13 Seismic Refraction 241</b></p> <p>13.1 Refraction Surveys 241</p> <p>13.2 Interpretation 247</p> <p>13.3 Limitations of the Refraction Method 257</p> <p><b>14 Seismic Surface Wave Methods 261</b></p> <p>14.1 Surface Wave Surveys 261</p> <p>14.2 Data Processing 266</p> <p>14.3 Limitations of the Method 270</p> <p><b>15 Maps, Mapping and GPS 273</b></p> <p>15.1 Maps and Mapping 273</p> <p>15.2 Satellite Navigation 276</p> <p>Appendix: Terrain Corrections for Hammer Zones B to m 281</p> <p>Index 283</p>

<p>“Overall, Field Geophysics—one of several published by Wiley-Blackwell in their Geological Field Guide Series—is a good practical introductory reference book for a geophysical technician beginning their career or a quick refresher for someone using an instrument they haven’t picked up for many years.”  (<i>Environmental & Engineering Geoscience</i>, 2 May 2013)</p> <p> </p>

<p>John Milsom is the author of Field Geophysics, 4th Edition, published by Wiley. Asger Eriksen is the author of Field Geophysics, 4th Edition, published by Wiley.

<p>This handy pocket-sized field guide provides practical information and assistance to anyone engaged in small-scale surveys on the ground. Fully revised and updated throughout , the Fourth Edition includes comprehensive updates on the used of GPR and GPS and new sections on surface wave seismic and towed array systems. This has become the standard text in this area for use in the field and the experience of the two authors will ensure the book retains its place as one of the most popular handbooks in applied geophysics.</p> <ul> <li>Fully revised and updated to incorporate new developments in the field;</li> <li>Focus on quality control of the acquisition of data and basic field interpretation;</li> <li>User-friendly, accessible writing style;</li> <li>Includes updates on Ground Penetrating Radar and the use of GPS;</li> <li>New section on surface wave methods;</li> <li>Additional material available on the companion website at: www.wiley.com/go/milsom/geophysics4e</li> </ul>

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