Which consequence results when sand supply decreases near a barrier island system?

💡 Explanation

Reduced sand supply initiates overwash, furthering the island's landward migration because of loss of sediment for natural rebuilding processes; therefore, migration increases, rather than building the islands seaward or increasing mainland stability since longshore drift's sediment deposition changes.The mechanism is barrier island transgression.

• Which outcome occurs from increased pressure gradients influencing trade winds?
• Which outcome results when intense rainfall strikes thick loess deposits?
• Which long-term effect follows reduced wave refraction near stack formations?
• Which catastrophic effect is initiated by density currents generated from pyroclastic tephra flows entering a stratified lake?
• Which outcome is driven by density stratification during subduction?
• Which deformation occurs when seismic waves pass through different rock types near a transform fault?