Which long-term outcome occurs from a dam blocking sediment transport?

💡 Explanation

Increased coastal erosion occurs because sediment supply is cut off, hindering natural coastal buildup; therefore, coastal land retreats, rather than progrades, under constant erosive forces because longshore drift's sediment replenishment mechanism fails. Submarine canyon formation and upstream accretion are not dominant consequences.

• Which phenomenon causes the deflection of large-scale ocean currents such as the Gulf Stream?
• Which atmospheric-driven effect causes enhanced coastal upwelling currents along western continental edges at mid lats?
• Which phenomenon allows saltwater intrusion into coastal aquifers behind barrier islands?
• Which outcome results when a subducting plate dehydrates?
• Which risk escalates on steep slopes in Arctic regions undergoing active solifluction?
• Which geographic deformation results from mantle plume convection?