1. Gradual, Incremental Hillslope Transport:
Creep
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2. Creep Schedule Conversion of Rock to Regolith on Hillslopes
Soil Transport by Creep on Hillslopes
Mass Balance derivation of hillslope profile using Kirkby relation
MATLAB numerical example
Creep process descriptions
Coupled Production and transport
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3. Semester Schedule 28-Oct Creep Processes 31-Oct No Class
4-Nov Style/Activity/Distribution
7-Nov Type: Slides
9-Nov FIELD TRIP
11-Nov Type: Flow
14-Nov Type: Topple and Rockfall
18-Nov Causes: Earthquakes and Overloading
21-Nov Causes: Water, Slope Angle and Glacier Thinning
25-Nov Hazard Assessment
28-Nov Landslide Risk
2-Dec Landslide Risk
5-Dec (Away?)
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4. Gradient of Hillslope Transport Processes
Slow/Continual Process
Soil Creep
Rehologic Creep / Non-Rehologic
Biotic vs. Abiotic
Rainsplash/Sheetwash (not channelized)
Transport at/close to the ridgeline
RainsplashRainflowSheetwash Continuum
Rapid/Stochastic Process
Def: occurring at random frequency, no pattern
Multiple types determined as a function of:
Climate, hydrology, geologic materials, biota
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5. Soil Creep Mechanisms Biogenic, Non-Rheologic Abiotic
Tree Throw, Root growth and decay, Burrowing (mammals, insects, worms, etc.) Foot traffic
Abiotic
Non-Rheologic
Wet/Dry
Freeze/Thaw
Shrink/Swell (clays)
Frost Heave/Jacking
Rheologic (‘true’ creep, flow)
Liquefaction
Solufluction, Gelifluction
Plastic or visco-plastic flow (clays, fine sands)
Flux is a function of:
Slope, soil texture, soil moisture, temp fluctuations, depth
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6. 11/27/201811/27/2018
Gabet et al., 2007

7. 11/27/201811/27/2018
Gabet et al., 2007

8. Tree Throw
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9. Tree Throw
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Gabet et al., 2007

10. 11/27/201811/27/2018
Gabet et al., 2007

11. Worms, Termites and Ants
WVx9K7KwBA
Fg21x2sj-M
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12. 11/27/201811/27/2018
Harris et al, 2007

13. 11/27/201811/27/2018
Harris et al, 2007

14. Needle Ice
Dr. James R. Carter
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15. Fook
Here it is
View From Big Sheep Mountain, Wind River Range, Seminar Trip, Sept 2010

16. (Anderson, 2002)
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17. (Anderson, 2002)
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18. Idealized and actual displacement profiles
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Selby, 1993

19. Experiments for creep
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Harris et al., 2008

20. 11/27/201811/27/2018
Harris et al., 2008

21. 11/27/201811/27/2018
Harris et al., 2008

22. Harris et al., 2008
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Harris et al., 2008

23. Harris et al., 2008
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Harris et al., 2008

24. Contrast these short-term experimental results with long-term measurements of creep.
Physical Tracers
Fallout Short-Lived Isotopes
Meteoric 10Be
OSL Dating
Integrating Soil Production Rates
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25. Young Pit
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Heimsath and Jungers, 2013

26. Short Lived Isotopes
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Heimsath and Jungers, 2013

27. Meteoric 10Be
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Heimsath and Jungers, 2013

28. Meteoric 10Be Sticks to Clays, not sand. Graly et al., 2010
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Graly et al., 2010

29. Meteoric 10Be
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Graly et al., 2010

30. 11/27/201811/27/2018
Graly et al., 2010

31. 11/27/201811/27/2018
Graly et al., 2010