…The coastline is lined with parallel dunes, about 5 km wide, and at Pyla it is over 100 m above sea level. The inland area is covered by a layer of sand several tens of metres thick, which forms an impermeable layer of sandstone called arillos less than a metre below the surface. On the other hand, there is no drainage to the sea, except for the River Leil (or Aire), which flows into the Arcachon lagoon. Rainfall accumulates inside the dunes, forming a series of lakes and marshes, and the area is widely flooded during the winter rains. … *Some of the terminology explanations that mention "Ariyos" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…海岸線沿いには並列して砂丘が発達し,幅約5km,ピラでは標高100mを超える。内陸は厚さ数十mの砂の層で覆われ,この砂は地表から1m足らずで,アリヨスと呼ばれる不浸透性の砂岩の層を形成している。他方,アルカションArcachonの潟に流れるレイル(またはエイル)川を除き,海への排水路はなく,砂丘の内側に降水がたまり,一連の湖沼をつくり,また冬の降水期には広く浸水する。… ※「アリヨス」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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