Which mechanism causes reversing transverse dune crest migration?

💡 Explanation

Seasonal offshore winds cause reversing dune crest migration due to wind transport. The mechanism, saltation, mobilizes sand grains upwind, causing dune reversal; therefore seasonal wind shifts explain the alternating direction, rather than cementation or groundwater influence dominating sediment deposition.

• Which mechanism causes thermohaline circulation slowdown in a freshwater glacial lake emptying into the North Atlantic?
• Which outcome results when differential weathering weakens coastal rock formations?
• Which mechanism causes reduced sediment deposition rates within an oxbow lake compared to the active river channel?
• Which mechanism reduces surface salinity in high-latitude oceans when warming temperatures accelerate glacial meltwater outflow?
• Which phenomenon restricts deep water renewal within silled fjords?
• Which mechanism influences jet stream meandering as it passes over major mountain ranges and coastal streams?