Offshore Geohazards Wiki

1. Introduction to Offshore Slope Instability
2. Mechanisms of Instability
3. Triggering Mechanisms
   1. Gravity Forces
   2. Hydraulic Forces
   3. Earthquakes and Tectonic Activity
   4. Over Pressurization Due to the Presence of Gas
   5. Oversteepening
   6. Rapid Rate of Sedimentation
   7. Storm Waves
   8. Low Tides
   9. Seepage
   10. Glacial Sediment Deposition Loading
   11. Volcanoes
   12. Pore Pressure Increase
   13. Tsunamis
   14. Human Activity
   15. Slope Angle
4. Geologic Spatial and Temporal Features of Submarine Slides
   1. Classification of Slides
   2. Types of Deformational Features
   3. Run-Out Distance of Slides
   4. Aging
5. Offshore Sediments - Overview and Properties
   1. Soil Types
   2. Deposition Modes
   3. Mineralogy
   4. Gas Hydrates
   5. Soil Consolidation
   6. Effective Stress
   7. Compressibility
   8. Shear Strength
   9. Coarse- Grained versus Fine- Grained Soils
6. Exploration Methods
   1. Multibeam and Bathymetric Methods
   2. Remotely Operated Vehicles
   3. Non-Invasive Techniques
   4. Geotechnical Investigations
   5. In-Situ Testing
   6. Sampling Methods
7. Laboratory Tests for Determining Soil Mechanical Properties
   1. Cyclic Loading
   2. Direct Simple Shear Test
   3. Triaxial Shear Test
8. Analyses of Slope Stability
   1. Limit Equilibrium Methods
   2. Continuum Analyses
   3. Finite Element Analysis
9. Slope Stability Under Wave Forces
   1. Wave-Induced Bottom Pressures
   2. Wave-Induced Stresses Within the Sea Bed
   3. Transient Wave-Induced Pore Pressures
   4. Residual Wave-Induced Pore Pressures
   5. Limit Equilibrium Analysis of Slope Stability Due to Waves
   6. Simplified Total Stress Analysis of Stability
   7. Simplified Evaluation of Wave-Induced Liquefaction
10. Earthquake Effects
    1. Limit Equilibrium Analysis of Slope Stability Due to Earthquakes
    2. Evaluation of Liquefaction Potential
    3. Effective Stress Analysis of Liquefaction Potential