V2EX outwash

Outwash

定义 Definition

outwash(地质/冰川学)指冰川融水携带并在冰川前方(或冰缘外)沉积的砂、砾等松散物质,也可指这种沉积物形成的外洗平原/外洗扇(outwash plain)。常见含义为名词;在地质语境中最常用。

发音 Pronunciation (IPA)

/atw/

例句 Examples

The hikers crossed a wide outwash of sand and gravel.
徒步者穿过了一片宽阔的冰川外洗砂砾沉积地。

During the spring melt, braided streams spread fresh outwash across the valley floor, reshaping the landscape.
在春季融雪期,辫状河道把新的外洗沉积物铺展到谷底,重新塑造了地貌。

词源 Etymology

outwashout-(向外)+ wash(冲刷、冲洗)构成,字面意思是“向外冲刷出来的物质”。该词在冰川地貌学中用来描述融水把沉积物从冰体前缘“洗”出来并向外搬运、堆积的过程与产物。

相关词 Related Words

文学与著作 Literary Works

  • John Gerrard, Fundamentals of Geomorphology(地貌学教材中常用到 outwash 描述冰川融水沉积地貌)
  • David J.A. Evans & Andrew S. Orton, Glacial Geomorphology: A Field Guide(野外地貌指南中用 outwash 标注外洗平原与辫状河沉积)
  • Richard John Huggett, Fundamentals of Geomorphology(章节讨论冰川过程与外洗沉积,频繁出现 outwash
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