sandbox analog models:
Post on 23-Feb-2016
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Sandbox analog models: Sketch a cross section of the ‘mountain’ through the middle, normal to the plate boundary.Which one has higher basal coefficient of friction?
A
A’
B
B’
Critical taper equation
The relationship of the topographic slope (α) to the material properties (angles of internal and basal frictions)
For cohesionless material,
𝛼=𝜇𝑏
𝑁
𝑁=𝑡𝑎𝑛2( 𝜋4 + 𝜙2 )= 1+𝑠𝑖𝑛𝜙1−𝑠𝑖𝑛𝜙
(Koons, 1990)
Sandbox analog models: Construct ‘beachball ‘ diagrams showing the seismogenic instantaneous strain and fault motion.
Sandbox analog models: Construct beachball diagrams.Where beachball diagrams show the predominantly strike-slip nature?
Shear strain rate of weak base (φb = 15˚ ) model
Shear strain rate of strong base (φb = 45˚ ) model
Horizontal velocity of weak base (φb = 15˚ ) model
Vertical velocity of weak base (φb = 15˚ ) model
Horizontal velocity of strong base (φb = 45˚ ) model
Vertical velocity of strong base (φb = 45˚ ) model
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