University of Agricultural Sciences, Bangalore

Includes bibliographical references and index.

Front Cover; Digital Terrain Analysis in Soil Science and Geology; Copyright; Contents; Preface to the Second Edition; Acknowledgments; Abbreviations and Acronyms; Chapter 1: Digital Terrain Modeling: A Brief Historical Overview; Part I: Principles and Methods of Digital Terrain Modeling; Chapter 2: Topographic Surface and Its Characterization; 2.1. Topographic Surface; 2.1.1. Definition and Limitations; 2.1.2. Contour Lines and Special Points; 2.1.3. Morphometric Variable and Its Types; 2.2. Local Morphometric Variables; 2.2.1. Overview; 2.2.2. Gradient; 2.2.2.1. Slope Lines and Flow Lines.

2.2.3. Aspect2.2.4. Curvatures; 2.2.4.1. Plan Curvature; 2.2.4.2. Horizontal Curvature; 2.2.4.3. Vertical Curvature; 2.2.4.4. Mean Curvature; 2.2.4.5. Principal Curvatures; 2.2.4.6. Gaussian Curvature; 2.2.4.7. Unsphericity Curvature; 2.2.4.8. Rotor; 2.2.4.9. Difference Curvature; 2.2.4.10. Horizontal and Vertical Excess Curvatures; 2.2.4.11. Ring Curvature; 2.2.4.12. Accumulation Curvature; 2.2.4.13. Laplacian; 2.2.5. Generating Function; 2.3. Nonlocal Morphometric Variables; 2.4. Structural Lines; 2.5. Solar Morphometric Variables; 2.5.1. Reflectance; 2.5.2. Insolation.

2.6. Combined Morphometric Variables2.7. Landform Classifications; 2.7.1. Gaussian Classification; 2.7.2. The Concept of Accumulation Zones. The Efremov-Krcho Classification; 2.7.3. The Shary Classification; Chapter 3: Digital Elevation Models; 3.1. DEM Generation; 3.1.1. Conventional Topographic Surveys; 3.1.2. Kinematic GNSS Surveys; 3.1.3. Stereophotogrammetry; 3.1.4. Structure-From-Motion Techniques; 3.1.5. Laser Altimetry; 3.1.6. SAR Techniques; 3.1.7. Echo Sounding; 3.1.8. Satellite Radar Altimetry; 3.1.9. Airborne Optical Sensing of Bathymetry; 3.1.10. Soil and Geological Core Drilling.

3.1.11. Three-Dimensional Seismic Survey3.1.12. Ice Penetrating Radio-Echo Sounding; 3.1.13. Digitizing of Contours; 3.1.14. Fusion of Data From Different Sources; 3.2. DEM Grids; 3.2.1. Plane Grids; 3.2.2. Spheroidal Grids; 3.2.3. Datums and Coordinate Systems; 3.3. DEM Resolution; 3.4. DEM Interpolation; 3.4.1. General; 3.4.2. Some Methods; Chapter 4: Calculation Methods; 4.1. The Evans-Young Method; 4.2. Calculation of Local Morphometric Variables on a Plane Square Grid; 4.2.1. Motivation; 4.2.2. Formulae; 4.2.3. Method Validation; 4.2.3.1. Materials and Data Processing.

4.2.3.2. Results and Discussion4.3. Calculation of Local Morphometric Variables on a Spheroidal Equal Angular Grid; 4.3.1. Motivation; 4.3.2. Formulae; 4.3.3. Calculation of Linear Sizes of a Spheroidal Equal Angular Window; 4.3.4. Discussion; 4.4. Calculation of Nonlocal Morphometric Variables; 4.4.1. Operation on a Plane Square Grid; 4.4.2. Operation on a Spheroidal Equal Angular Grid; 4.5. Calculation of Structural Lines; 4.5.1. Conventional Algorithms; 4.5.2. Generating Function; 4.6. Calculation of Solar Morphometric Variables; 4.7. Calculation of Combined Morphometric Variables.