Which process dictates submerged sandbar migration near barrier islands?

💡 Explanation

Longshore drift drives the shifting of sand deposits parallel to coastlines; because sandbars are unconsolidated sedimentary features, they are highly vulnerable to redistribution via longshore drift, therefore dictating their location, rather than vertical upwelling.

• Which consequence results near the coast when excessive groundwater extraction destabilizes karst?
• Which deformation occurs on continents undergoing isostatic rebound?
• Which effect results when trade winds approach the equator in a Walker circulation cell?
• Which risk increases when increased freshwater runoff disrupts the density gradient within a subtropical gyre?
• Which mechanism causes tsunami generation when a submarine earthquake occurs involving vertical seafloor displacement?
• Along coastlines, which outcome occurs when persistent offshore winds drive surface water away from the shore?