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Barchan

释义 Definition

barchan（新月形沙丘）：一种常见于干旱、风向较稳定地区的沙丘类型，外形像新月，两端（“角”）顺风向伸出，并会在持续风力作用下缓慢迁移。（该词也常写作 barkhan。）

发音 Pronunciation

/brkn/

例句 Examples

A barchan dune forms where the wind blows mostly from one direction.
新月形沙丘通常形成于风向大多单一稳定的地区。

Over time, the barchan migrated downwind and partially buried the roadside fence.
随着时间推移，这座新月形沙丘向下风方向移动，并部分掩埋了路边的围栏。

词源 Etymology

barchan 源自俄语 бархан（barhan，“沙丘”），一般认为与突厥语族中表示“沙丘/沙堆”的词有关。该词通过地貌学与沙漠研究文献进入英语，用来指代这种具有典型新月形外观的风成沙丘。

相关词 Related Words

文学与著作 Literary Works

The Physics of Blown Sand and Desert Dunes（R. A. Bagnold）
Aeolian Geomorphology: An Introduction（K. Pye & H. Tsoar）
Sand and Sand Dunes（I. Livingstone & A. Warren）
The Geomorphology of Desert Dunes（R. U. Cooke, A. Warren & A. S. Goudie）

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