Which outcome typically occurs when longshore drift encounters a submerged obstruction?

💡 Explanation

Tombolo formation occurs because sediment deposition increases in the wave shadow behind obstructions due to reduced energy and velocity caused by wave refraction. Therefore, a tombolo forms rather than a barrier island, because a tombolo connects to the mainland.

• Which outcome occurs when a newly formed barrier island restricts lagoon water exchange?
• Which increasing risk results when intense rainfall interacts with existing karst topography?
• Which effect amplifies hurricane spin in the Northern Hemisphere?
• Which outcome increases when highly soluble bedrock groundwater withdrawal exceeds recharge?
• Which outcome occurs when permafrost thaw accelerates due to increased global temperatures?
• Which outcome occurs when differential weathering undermines coastal sea stacks?