Ground Penetrating Radar

A real-world guide to practical applications of groundpenetrating radar (GPR) The nondestructive nature of ground penetrating radar makes itan important and popular method of subsurface imaging, but it is ahighly specialized field, requiring a deep understanding of theunderlying science for successful application. Introduction toGround Penetrating Radar: Inverse Scattering and DataProcessing provides experienced professionals with thebackground they need to ensure precise data collection andanalysis. Written to build upon the information presented in more generalintroductory volumes, the book discusses the fundamentalmathematical, physical, and engineering principles upon which GPRis built. Real-world examples and field data provide readers anaccurate view of day-to-day GPR use. Topics include: 2D scattering for dielectric and magnetic targets 3D scattering equations and migration algorithms Host medium characterization and diffraction tomography Time and frequency steps in GPR data sampling The Born approximation and the singular valuedecomposition The six appendices contain the mathematical proofs of allexamples discussed throughout the book. Introduction to GroundPenetrating Radar: Inverse Scattering and Data Processing is acomprehensive resource that will prove invaluable in the field.

This book presents the integrated use of magnetometry and ground-penetrating radar geophysical mapping to understand the human presence within buried archaeological landscapes. Ground-penetrating radar can be used to identify buried living surfaces, geological stratigraphy and the architectural remains of sites in three-dimensions. Magnetometry can produce images denoting differences on the composition of those materials, both anthropogenic and natural, but with more limited three-dimensional resolution. The integration of the two has a unique ability to resolve and interpret these buried materials, differentiated between the human-caused and natural layers, and place all buried features within historic landscapes. The final product of geophysical integration, along with some limited subsurface testing, produces a holistic analysis of human adaptations to, and modifications of, the ancient landscape. Examples are shown from sites in Roman Croatia and Britain, Medieval Ireland, Colonial Connecticut, and an Archaic site in the Colorado Rocky Mountains. These examples from very different environments, time periods and cultural groups illustrate how the integrated geophysical methodology can interpret, on a scale approaching many hectares, the ancient landscapes within which people lived.

Ground Penetrating Radar: Theory and Practice is a practical guide to using this powerful underground surveying technique. The author uses her wide experience to explain the critical factors in using GPR and how parameters, such as wavelength, attenuation and loss need to be properly considered to obtain good survey results. The first chapter introduces the underlying physics and explains the formation of signal patterning. The next two chapters explain the significance of wavelengths for target detection, probing depths and resolution, and demonstrating the variety of signal presentation. Chapter four discusses why survey results are affected by water and air in the soil, and how this may affect depth readings. Additional chapters discuss a variety of methods for velocity calibration and suggests where they may be useful, challenging soil conditions and potential problem environments, data processing and a suite of useful techniques, amongst other important topics. The book gives a clear and formative guidance on understanding the critical factors in using GPR, as well as a checklist of surveying considerations. Covers the critical, practical factors in using a ground penetrating radar, including troubleshooting appropriate equipment selection Explains why wavelengths matter, providing practice calculations Offers insight into how to spot ringing (echo effects) and air signals, and how to distinguish these from subsurface data Enables the reader to understand the importance of calibration of transmission velocity and a range of methodsa

Included in this book are practical guidelines for data collection and interpretation, from antennae configurations to sequence stratigraphy, together with new advances such as vertical radar profiles and 3-D GPR imaging for hydrocarbon reservoir modelling, designed to assist new and veteran users get the most from GPR. Case studies in this book detail GPR investigations in a wide array of sedimentary environments including alluvial fans, braided rivers, spits, beaches, sand dunes, lakes, bogs, and floodplains.

This book describes the key elements of the subject of surface penetrating radar, and in general terms the inter-relationship between those topics in electromagnetism, soil science, geophysics and signal processing which form part of its design.

Ground-penetrating radar (GPR) is a rapidly developing field that has seen tremendous progress over the past 15 years. The development of GPR spans aspects of geophysical science, technology, and a wide range of scientific and engineering applications. It is the breadth of applications that has made GPR such a valuable tool in the geophysical consulting and geotechnical engineering industries, has lead to its rapid development, and inspired new areas of research in academia. The topic of GPR has gone from not even being mentioned in geophysical texts ten years ago to being the focus of hundreds of research papers and special issues of journals dedicated to the topic. The explosion of primary literature devoted to GPR technology, theory and applications, has lead to a strong demand for an up-to-date synthesis and overview of this rapidly developing field. Because there are specifics in the utilization of GPR for different applications, a review of the current state of development of the applications along with the fundamental theory is required. This book will provide sufficient detail to allow both practitioners and newcomers to the area of GPR to use it as a handbook and primary research reference. *Review of GPR theory and applications by leaders in the field *Up-to-date information and references *Effective handbook and primary research reference for both experienced practitioners and newcomers

This book, based on Transport and Urban Development COST Action TU1208, presents the most advanced applications of ground penetrating radar (GPR) in a civil engineering context, with documentation of instrumentation, methods and results. It explains clearly how GPR can be employed for the surveying of critical transport infrastructure, such as roads, pavements, bridges and tunnels and for the sensing and mapping of underground utilities and voids. Detailed attention is also devoted to use of GPR in the inspection of geological structures and of construction materials and structures, including reinforced concrete, steel reinforcing bars and pre/post-tensioned stressing ducts. Advanced methods for solution of electromagnetic scattering problems and new data processing techniques are also presented. Readers will come to appreciate that GPR is a safe, advanced, non destructive and noninvasive imaging technique that can be effectively used for the inspection of composite structures and the performance of diagnostics relevant to the entire life cycle of civil engineering works.

Ground-penetrating radar (GPR) has become one of the standard tools in the archaeologist's array of methods, but users still struggle to understand what the images tell us. In this book—illustrated with over 200 full-color photographs—Lawrence Conyers shows how results of geophysical surveys can test ideas regarding people, history, and cultures, as well as be used to prospect for buried remains. Using 20 years of data from more than 600 GPR surveys in a wide array of settings, Conyers, one of the first archaeological specialists in GPR, provides the consumer of GPR studies with basic information on how the process works. He show how the plots are generated, what subsurface factors influence specific profiles, how the archaeologist can help the surveyor collect optimal data, and how to translate the results into useable archaeological information.