吹蝕(Deflation)是一種風的地質作用,與磨蝕(Abrasion)同為風蝕作用的兩種類型[1]。由於氣流的直接壓力使地面上鬆散岩石遭到破壞,粉碎和被吹走的作用稱為吹蝕。[2]

吹蝕盛行於海岸、河床、沙漠等風強雨少、天氣晴朗、蒸發強烈、且地面缺乏植被與水分的區域。風蝕窪地、漠地礫面、礫漠和岩漠等地形,其形成主因即為吹蝕[1]

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