Which risk increases when reduced sediment supply hinders sand deposition behind a developing coastal barrier island?

💡 Explanation

Increased storm surge overwash occurs due to barrier island degradation. Sea level rise causes shoreline retreat through marine transgression, rather than isostatic rebound. Storm surge overwash results because impeded sediment transport hinders natural island building processes.

• Which outcome occurs when wind exceeds threshold friction velocity parallel a vegetated dune field?
• Which feedback results when volcanic tephra deposition increases albedo?
• Which outcome occurs when elevated atmospheric CO₂ levels persist?
• Which outcome occurs when trade winds approach equatorial continents?
• Which outcome is accelerated along ocean surface currents when increased atmospheric temperatures weaken the density gradient near glacier streams?
• Which outcome occurs when intense weathering produces abundant sediment upslope from a confined valley exit onto a plain?