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← GeographyWhich effect is amplified as increased sediment deposition obstructs a river meander and subsequently cuts off river flow?
A)Oxbow lake erosion rate✓
B)Braided channel formation likelihood
C)Alluvial fan apex progradation
D)Floodplain soil permeability decline
💡 Explanation
Oxbow lake erosion accelerates because channel abandonment increases hydraulic gradient and flow concentration in the cutoff. This process is referred to as avulsion. Deposition makes erosion occur in one place rather than uniform erosion, and other options will only happen with changes.
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