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← GeographyWhich consequence results when overtopping occurs on barrier islands?
A)Landward migration increases significantly✓
B)Lagoon salinity levels rapidly decline
C)Dune formation increases gradually
D)Backshore aeolian transport halts completely
💡 Explanation
Increases in barrier island overtopping causes increased rates in landward migration because storm surges transport sediment landward via marine overwash. Therefore, the island moves inland and upward, rather than maintaining position or halting evolution entirely.
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