Which effect occurs when wind speed decreases abruptly after saltation?

💡 Explanation

Parabolic dunes initiate where vegetation anchors parts of the dune surface; wind speed decreasing causes sand deposition. This differential sand transport shapes the dune, therefore a parabolic dune forms rather than a sheet dune because specific anchoring is present.

• Which outcome is accelerated if permafrost degradation weakens the bergschrund wall above a cirque?
• In poorly drained floodplain soils, which mineral transformation is driven by fluctuating redox conditions?
• Which outcome typically follows meander cutoff in fluvial systems?
• Which pedogenic outcome results when intense termite bioturbation modifies savanna soils?
• Which feedback results when sustained aeolian abrasion forms ventifacts?
• Which outcome occurs when hydraulic gradient decreases abruptly?