Which mechanism increases the frequency of oxbow lake formation in fluvial floodplains with easily eroded cohesive soils?

💡 Explanation

In soils with low cohesive strength, increased discharge during floods causes accelerated lateral channel migration via bank erosion, which shortens the time required for a meander neck to be cut off, forming an oxbow lake because rapid undercutting increases the rate of outward movement of river bends. Therefore, a higher migration rate results, rather than decreased deposition, reduced flooding, or vegetation which would stabilize the banks hindering the process.

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