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Geography

Which outcome occurs when a low-gradient alluvial plain experiences accelerated subsidence?

A)Enhanced meandering channel avulsion
B)Increased suspended sediment load
C)Stabilized floodplain soil horizons
D)Decreased rate of delta progradation

💡 Explanation

Enhanced meandering channel avulsion ensues due to differential compaction. Subsidence increases channel slope locally due differential compaction, which causes faster migration of meanders because hydraulic radius promotes channel incision, therefore avulsion becomes more probable, rather than gradual aggradation and floodplain stability.

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