Under what circumstance would significant overwash initiate barrier island migration?

💡 Explanation

Reduced sediment is the initiator because it diminishes the sand reservoir available for beach nourishment and dune building; this causes increased overwash via Wave action and Landward transport , therefore the barrier migrates landward rather than remaining stationary.

• Which outcome results when transform fault motion is impeded?
• Which phenomenon causes increased anchovy productivity when coastal upwelling occurs off Peru's west coast?
• Which risk increases near transform plate margins during locked phases?
• Which outcome increases when highly soluble bedrock groundwater withdrawal exceeds recharge?
• Which risk increases adjacent to a river reach where artificial levees have been recently constructed?
• Which process contributes to the formation of deep anoxic basins within fjord environments with restricted sills?