V2EX isostasy

Isostasy

释义 Definition

均衡说;地壳均衡(作用):指地球岩石圈(主要是地壳与上地幔最上部)在较“软”的地幔物质之上,因密度与厚度差异而达到一种近似的浮力平衡状态。常用来解释大陆“根”、山脉隆起与冰川消退后的地表回弹等现象。

发音 Pronunciation

/asstsi/

例句 Examples

Isostasy helps explain why mountains have deep “roots” underground.
均衡说有助于解释为什么山脉在地下有很深的“根”。

After the ice sheet melted, the land slowly rose due to isostasy, reshaping the coastline over thousands of years.
冰盖融化后,陆地因地壳均衡作用而缓慢抬升,在数千年间改变了海岸线的形态。

词源 Etymology

该词由 **iso-**(“相等、均等”)与 -stasy(源自希腊语 stasis,“站立、稳定状态”)构成,字面含义接近“处于均等稳定的状态”。它在地质学中用来描述地壳在重力与浮力共同作用下趋于平衡的概念。

相关词 Related Words

文学作品 Literary Works

  • The Voyage of the Beagle(《小猎犬号航行记》) Charles Darwin:在讨论地表升降、海岸线变化等地质现象的语境中常与“地壳平衡/回弹”相关概念并置(现代版本与注释中可能直接使用“isostasy”一词)。
  • Principles of Geology(《地质学原理》) Charles Lyell:涉及地壳升降与长期地质过程的论述中,与均衡与补偿(compensation)等思想关联紧密;后世地质学写作常以“isostasy”概括相关机制。
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