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← ScienceWhich effect accelerates sediment sorting in alluvial fans?
A)Increased flow competent Reynolds number✓
B)Reduced sediment threshold shear stress
C)Enhanced laminar boundary layer adhesion
D)Kinematic viscosity buoyant equilibrium boost
💡 Explanation
Shear stress on sediment depends upon flow regime as described by Reynolds number; segregation increases because higher Reynolds numbers give greater local turbulent fluctuations and entrainment, eroding lower fractions, therefore increases sorting, rather than boundary effects.
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