lower mantle [地质] 下地幔 ; 下部地函 ; 地幔 ; 地幔下部
lower mantle viscosity 下地幔粘性
composition of lower mantle 下地慢组分
lower mantle mineral associations 下地幔矿物组合
Downwelling superplume of lower mantle 超级下降地幔柱
lower r mantle 下地幔
Lower Yangtze mantle 下扬子地幔
The Moon's mean density is much lower than that of Earth but is about the same as that of Earth's mantle.
月球的平均密度比地球低得多,但与地球的地幔密度大致相同。
Hess suggested that the presence of water, probably released from minerals decomposing in the Earth's mantle, might have meant that a high-magnesium magma could have existed at a lower temperature.
赫斯认为,水的存在可能是由地幔中分解的矿物质释放出来的,这可能意味着含镁高的岩浆可能在较低的温度下存在。
This won't affect climate tomorrow, but what our results tell you is that carbon from the surface can go all the way into the lower mantle, which may be a long-term sink for carbon.
这不会对明天的天气产生影响,但我们所得的结果告诉你来自地表的碳元素总是能够进入到底层的地幔中,这可能是碳元素的长期下沉过程。
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