The book is divided into two parts. The first part concentrates on the theoretical basis of the various methods, illustrated for the most part through case-studies and practical examples drawn from a variety of geographical and cultural contexts. The second part focuses on the work carried out in the field during the Summer School. Tutors and students took part in the intensive application of the principal techniques of geophysical prospecting (magnetometry, EM, ERT and ground-penetrating radar) to locate, retrieve, process and interpret data for a large Roman villa-complex near Grosseto.
SEEING THE UNSEEN. GEOPHYSICS AND LANDSCAPE ARCHAEOLOGY provides a clear illustration of the remarkable potential of geophysical methods in the study of ancient landscapes, and will be usefull to Archaeologists, Geophysicists, Environmental scientists, and those involved in the management of cultural heritage.
The emphasis is on the principles and practical application of the well established techniques of resistivity, magnetometry and magnetic susceptibility, with shorter sections on emerging and less common techniques such as ground-penetrating radar, electromagnetic methods and phosphate survey.
This paperback edition updates and enhances the earlier book, adding new material such as the large-scale evaluation exercises now required as a precondition of planning consent for major developments.
Crime scene investigation and evidence collection entails locating, identifying, collecting, and cataloging. Such physical evidence searches are time consuming and can often lead to searches that require excavations, which in itself that can destroy evidence. The noninvasive, nondestructive methods outlined in this book can both reduce the time spent on searches and excavations, thereby increasing the probability of locating vital physical evidence. As such, the application of remote sensing methods has gained increased acceptance, and seen increased usage, by investigators.
Remote sensing methods are based on making indirect measurements of the surface of and within the earth. The resulting measurement information can be presented in either an imaging format— such as in aerial photography—or a non-imaging format, such as in a profile or contour map. These measurements can be interpreted to identify and characterize contrasts due to differences in physical and natural properties of the materials being studied. This can include physical evidence, remains, and clandestine graves.
This book will serve as a handy introductory primer to the technology, techniques, and application of such techniques. Throughout, numerous references and additional resources are provided for those investigators, forensic anthropology, and police professionals who want further information on the technology’s usage for investigative purposes.
Additional material available on the companion website at www.wiley.com/go/milsom/geophysics4e
The mathematics required in order to understand the text is purposely kept to a minimum, so the book is suitable for courses taken in geophysics by all undergraduate students. It will also be of use to postgraduate students who might wish to include geophysics in their studies and to all professional geologists who wish to discover the breadth of the subject in connection with their own work.
Author J. S. Dugdale establishes a picture of the current-carrying state of a solid and the associated electron energy states before exploring how departures from crystal perfection scatter electrons. Static imperfections and lattice vibrations receive detailed explanations before the text advances to complex scattering. Emphasis on the behavior of real materials provides readers with a physical understanding of transport properties of transition metals, resistance, and thermoelectric anomalies in dilute magnetic alloys and transport in concentrated alloys and compounds.
Dr John Oswin is in charge of the geophysics operation of the Bath and Camerton Archaeological Society and his work has recently been the subject of a television programme. He has taught many students how to use geophysical equipment.