英德
有道
百度
谷歌
图片
维基
百科
下地幔 [xià dì màn]
lower mantle
- 一项新的研究表示在地球深处极高的热度和极大的压力使得音波通过下地幔传播的速度比之前估计的更慢，表示地球内部该层的部分比预期的更软。
A new study suggests the intense heat and pressure deep in the Earth makes sound waves travel more slowly through parts of the lower mantle than had been previously estimated, suggesting that part of this layer of the inner Earth is softer than expected. - “但同时，从下地壳一直到地幔上部在产生一种东西拉张的力量，这种拉力对喜马拉雅山的继续升高起到了阻碍作用。”
"But at the same time, a horizontal pulling power inside the lower continental crust and mantle of the earth counteracts this upward movement," said Bian. - 同时，还从库仑破裂应力触发、动态应力触发以及下地壳和上地幔流动变形机制等方面，对这些大震效应作了一些成因机理讨论。
Finally, some possible physical mechanisms, for example the Coulomb stress-triggering mechanism, the dynamic stress-triggering mechanism and the lower crust and upper mantle flow deformation mechanism, which may generate these coseismic and post-seismic anomalies, are discussed.
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