Which outcome occurs from enhanced overwash events eroding a barrier island's dune system?

💡 Explanation

Landward migration of the barrier island results from dune erosion and sediment transport by overwash; this is barrier island transgression because sediment accumulation occurs on the bay side, therefore its shoreline moves inland rather than remaining stable.

• Which risk increases when urban development reduces floodplain storage behind a natural levee system?
• Increased flood risk results when groundwater's solvent exceeds a limestone aquifer's saturation primarily because of which mechanism?
• Which outcome occurs when floodplains lack riparian vegetation?
• Which outcome results when a caldera experiences resurgence?
• Which outcome increases proportionally with substantial bioturbation in temperate grasslands?
• Which changes due to increased stratification limit upwelling?