…The landforms formed by deflation include desert pavements and blowouts. The former are formed when sand and dust are blown away by the wind, leaving behind large pebbles and boulders, and are like a layer of gravel. In the Sahara Desert, they are called regs and serirs, and in Australia, they are called gibber plains. A blowout is a circular or elliptical depression caused by deflation, measuring several hundred meters in diameter and about one meter deep. It is called a wind-eroded depression or wind-eroded depression. … From the Desert...Rocky deserts are called hamada (derived from the Arabic name for the plateau desert found in the Sahara), and can be either exposed rock beds rubbed with sand or covered with gravel and debris. The ground covered with gravel is called desert pavement or Gibber Plain in Australia, and is formed when deflation blows away sand and rocks, leaving behind gravel and rock masses. Desert pavement, where small gravel is piled on top of the soil, is called reg in the western Sahara and serir in the eastern Sahara. *Some terminology explanations that mention "gibber plain" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…デフレーションにより形成される地形としてはデザート・ペーブメントdesert pavement,ブローアウトblowoutがある。前者は,砂塵が風で飛ばされて大きな礫や岩塊などが残るため生じた,あたかも礫を敷きつめたような地面で,サハラ砂漠ではレグreg,セリールserir,オーストラリアではギバー・プレーンgibber plainと呼ばれる。ブローアウトは径数百m以下,深さは1m程度の円ないし楕円形のデフレーションによる凹地で,風食凹地または風食窪と呼ばれる。… 【砂漠】より…岩石砂漠はハマダhamada(サハラ砂漠に見られる高原砂漠のアラビア語の呼び名hammadaに由来)といわれ,砂などでこすり磨かれた岩石床が露出する場合と,岩石床の上を礫,岩屑がおおう礫砂漠の場合とがある。礫が敷きつめたように集中して堆積している地面は,デフレーションにより砂塵が吹き飛ばされて礫や岩塊などが残った結果生じたもので,デザート・ペーブメントdesert pavement,オーストラリアではギバー・プレーンgibber plainという。小礫が土壌上に堆積しているデザート・ペーブメントはサハラ西部ではレグreg,東部ではセリールserirと呼ばれている。… ※「gibber plain」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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