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Near-Surface Applied Geophysics
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TLDR
In this article, the authors explore the foundations of interpretation theory and the latest developments in near-surface techniques, used to complement traditional geophysical methods for deep-exploration targets, including magnetics, resistivity, seismic reflection and refraction, surface waves, induced polarization, selfpotential, electromagnetic induction, ground-penetrating radar, magnetic resonance, interferometry, seismoelectric and more.Abstract:
Just a few meters below the Earth's surface lie features of great importance, from geological faults which can produce devastating earthquakes, to lost archaeological treasures. This refreshing, up-to-date book explores the foundations of interpretation theory and the latest developments in near-surface techniques, used to complement traditional geophysical methods for deep-exploration targets. Clear but rigorous, the book explains theory and practice in simple physical terms, supported by intermediate-level mathematics. Techniques covered include magnetics, resistivity, seismic reflection and refraction, surface waves, induced polarization, self-potential, electromagnetic induction, ground-penetrating radar, magnetic resonance, interferometry, seismoelectric and more. Sections on data analysis and inverse theory are provided and chapters are illustrated by case studies, giving students and professionals the tools to plan, conduct and analyze a near-surface geophysical survey. This is an important textbook for advanced-undergraduate and graduate students in geophysics and a valuable reference for practising geophysicists, geologists, hydrologists, archaeologists, and civil and geotechnical engineers.read more
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Journal ArticleDOI
High‐resolution unmanned aerial vehicle aeromagnetic surveys for mineral exploration targets
TL;DR: In this article, a three-dimensional UAV aeromagnetic survey was conducted within the Shebandowan Greenstone Belt, northwest of Thunder Bay, Ontario, Canada, in July 2017.
Journal ArticleDOI
Geophysical investigation of underground water content zones using electrical resistivity tomography and ground penetrating radar: A case study in Hesarak-Karaj, Iran
TL;DR: In this article, the authors describe the successful application of an integrated geophysical survey to investigate the depth of underground water table and the location of probable cavity occurrences at a developing residential area to design the foundation of under constructing urban buildings.
Book ChapterDOI
Near-Surface Geophysical Characterization of Areas Prone to Natural Hazards: A Review of the Current and Perspective on the Future
Alireza Malehmir,Laura Socco,Mehrdad Bastani,Charlotte M. Krawczyk,Charlotte M. Krawczyk,A.A. Pfaffhuber,R D Miller,Hansruedi Maurer,Regula Frauenfelder,Koya Suto,Sara Bazin,Kaspar Merz,Torleif Dahlin +12 more
TL;DR: In this paper, a review of geophysical methods that can be and have been utilized in studying natural hazard prone areas, then a look into the future detailing how these methods and technologies can be better implemented and thereby more time and cost-effective and provide improved results.
Journal ArticleDOI
The use of FDEM in hydrogeophysics: A review
TL;DR: The frequency domain electro-magnetic (FDEM) survey is becoming a key tool for 3D soil characterization and dynamics observation in near surface hydrological studies as discussed by the authors, thanks to the improvement of multi-frequency and multi-coils instrumentation, simple time-lapse repeatability, cheap and accurate topographical referencing, and emerging development of inversion codes.
Journal ArticleDOI
Imaging and functional characterization of crop root systems using spectroscopic electrical impedance measurements
Maximilian Weigand,Andreas Kemna +1 more
TL;DR: In this paper, the authors highlight the imaging capabilities of these methods with regard to crop root systems and investigate changes in electrical signals caused by physiological reactions, and use them to characterize oilseed root systems embedded in nutrient solution.
References
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