Magnetic Resonance Imaging for Groundwater.
Title:
Magnetic Resonance Imaging for Groundwater.
Author:
Legtchenko, Anatoly.
ISBN:
9781118649466
Personal Author:
Edition:
1st ed.
Physical Description:
1 online resource (170 pages)
Series:
FOCUS Series
Contents:
Cover -- Title page -- Contents -- PREFACE -- ACKNOWLEDGEMENTS -- CHAPTER 1. SNMR IMAGING FOR GROUNDWATER -- 1.1. Brief history of SNMR development -- 1.2. The basic principles -- 1.3. Magnetic Resonance Sounding -- 1.4. Measuring setup -- 1.5. Geophysical tool for hydrogeologists -- CHAPTER 2. THE BASICS OF NMR -- 2.1. NMR phenomenon -- 2.1.1. Precession of free spins -- 2.1.2. Macroscopic spin magnetization -- 2.2. NMR relaxation -- 2.2.1. Longitudinal relaxation -- 2.2.2. Transverse relaxation -- 2.2.3. Diffusion in non-homogeneous magnetic field -- 2.3. NMR measurements -- 2.3.1. Free induction decay (FID) -- 2.3.2. Spin echo (SE) -- CHAPTER 3. FORWARD MODELING -- 3.1. The imaging equation -- 3.2. The Earth's magnetic field -- 3.3. Modeling typical SNMR signals -- 3.4. 3-D sensitivity of the SNMR loop -- 3.5. Experimental verification -- CHAPTER 4. INVERSION -- 4.1. The SNMR inverse problem -- 4.2. Linearization -- 4.3. Discretization -- 4.3.1. The 1-D inverse problem -- 4.3.2. The 3-D inverse problem -- 4.4. Linear inverse problems -- 4.5. Nonlinear inverse problems -- 4.5.1. Inversion of the geomagnetic field variations -- 4.5.2. Inversion of the resistivity distribution -- CHAPTER 5. LINK BETWEEN SNMR AND AQUIFER PARAMETERS -- 5.1. Parameters used for characterizing an aquifer -- 5.2. Available SNMR estimates on aquifer parameters -- 5.2.1. Detection of groundwater -- 5.2.2. Aquifers and geometry -- 5.2.3. Storage-related parameters -- 5.2.4. Flow-related parameters -- 5.3. Joint use of SNMR and resistivity data -- BIBLIOGRAPHY -- INDEX.
Abstract:
This book presents the basics of the non-invasive geophysical method for groundwater investigation, called Magnetic Resonance Sounding (MRS) or Surface Nuclear Magnetic Resonance (SNMR), and its practical application to the problems of groundwater localization and aquifer characterization. The method is based on the nuclear magnetic resonance (NMR) phenomenon and is selectively sensitive to groundwater. The main aims of the author are to teach the reader the basic principles of the method as well as to formulate consistent approximate models, leading to reasonably simple inverse problems. Containing an extensive bibliography, numerous practical and numerical examples as well as a detailed presentation of the nuts and bolts of the method based on the long-term experience of SNMR development and practical use, this book is useful for students, scientists and professional engineers working in the field of hydrogeophysics and hydrogeology. Contents 1. SNMR Imaging for Groundwater.2. The Basics of NMR.3. Forward Modeling.4. Inversion.5. Link Between SNMR and Aquifer Parameters.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
Genre:
Electronic Access:
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