Which risk increases when barrier island sediment replenishment halts?

💡 Explanation

Accelerated rate of coastal erosion on the mainland will occur if barrier islands erode, because these islands normally provide a buffer via wave energy dissipation (wave diffraction). Without it, wave energy directly impacts exposed coastline, therefore erosion accelerates at the coast, rather than being distributed.

• Which long-term consequence arises when intense subsurface irrigation causes increased leaching?
• What outcome results when an increase in sediment deposition alters lake bathymetry?
• Which outcome occurs when sediment load overwhelms stream competence after intense uplift?
• Which outcome results downstream of the Pacific Equatorial Undercurrent during a strong El Niño event?
• If intense seasonality strengthens chemical weathering on parent rock, which pedogenesis outcome accelerates?
• Which risk increases when sediment supply exceeds stream transport capacity near mountain fronts?