Importance of unique events/thresholds Discrete vs. continuous processes Storms Disturbance...
-
Upload
calvin-baker -
Category
Documents
-
view
221 -
download
0
Transcript of Importance of unique events/thresholds Discrete vs. continuous processes Storms Disturbance...
Importance of unique events/thresholds
Discrete vs. continuous processesStorms
DisturbanceLandslides
Debris Flows
Critical Distance from drainage divide = channelization
6. How and where are channels initiated on slopes?
Rain splash
Where flow is thin, rainsplash disturbance prevents channelization
Incision begins when shear stress exceeds
strength
Hillslope- channel transition, colluvial hollows
5. Explain two biologic effects on soil strength and erosion.
Other biotic effects - vary by climate and location
3
4. Describe the physical characteristics of debris flows and the deposits they leave.
3. Describe how slope stability is modeled for planar and rotational slides.
http://ees.as.uky.edu/sites/default/files/elearning/module11swf.swf
FORCE BALANCE
GRAVITY
SHEAR STRENGTH (FRICTION
AND COHESION or VISCOSITY)
DRIVING VERSUS RESISTING
Rotational failure - clay, silt, homogeneous material
2. What is cohesion and why is it important geomorphically?
1. Predict the effect of a heavy rainstorm on slope stability and explain the reasoning behind your prediction.