3.9. (9/13) DEBRIS FLOW - Hillslope transport Flashcards

Stratigraphy of hillslope deposits – Conglomerates

1
Q

What does strain rate do to an object?

A

High strain rate = brittle
Low strain rate = flows

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2
Q

How are debris flows and silly putty similar?

A

in a water channel, water is a material that has a linear relationship with shear stress and strain rate
- slope is determined by fluid viscosity

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3
Q

How does the mud in a debris flow behave?

A
  • silly putty
    -strain hardens
  • Bingham plastic
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4
Q

What is the velocity profile?

A

strain rate: the change in velocity with respect to z

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5
Q

what is U?

A

velocity

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6
Q

What is this equation used for?
Umax = ρgsinα (h-(k/ρgsinα))/2μ

A

gets applied to debris flows, the velocity that mud is moving so that it strain hardens and becomes a battering ram
- models debris flows

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7
Q

What is τc?

A

k or critical shear stress

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