SHALSTAB: Stability Model for Shallow Landsliding

Provide and explain answers to the following questions …

What is the influence on patterns of the potential for slope instability as a result of changes in

  1. transmissivity (T)?

    2.  

  2. bulk density (rs)?

    3.  

  3. depth (z)?

    4.  

  4. friction angle (f)?

    5.  

  5. apparent cohesion (C’)?

    6.  

     

  6. Which parameter is the most important for slope stability?

    7.  

     

  7. Which parameter is the least important?

    8.  

     

  8. Which parameters would you expect to know best?

    9.  

     

  9. Worst?

    10.  

     

  10. Which parameters would you expect to vary spatially and by how much?

    11.  

     

     

  11. How does use of measured soil depth (z =-1) affect predictions?

    12.  

  12. Based on the above, how should one use such a model in landslide hazard assessments for a) forest practice regulation, or b) regulating urban development in steep terrain?