...This is the basic form of sand dunes in desert regions when the wind direction is almost constant. Aeolian sand moves in parallel laminae on the windward slope, then slides down the steep leeward slope, forming steep foreset laminae one after another. This is the mechanism by which not only barchan dunes, but also general sand dunes move to the leeward side. ... *Some of the terminology that mentions "foreset laminae" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これは砂漠地域において,風向がほぼ一定であるときの砂丘の基本形態である。風成砂は風上側斜面を平行ラミナをなして動いた後,風下側急斜面を滑り落ち,急斜する前置ラミナforeset laminaeを次々に形成していく。これはバルハン砂丘だけでなく,一般の砂丘が風下側に移動していくメカニズムである。… ※「foreset laminae」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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