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Role of phonon thermal conductivity in the minerals of the earth′s mantle(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2004年第02期
Page:
32-33
Research Field:
Publishing date:

Info

Title:
Role of phonon thermal conductivity in the minerals of the earth′s mantle
Author(s):
HE An-ming; LI Chun; SHI Huan-w en
School ofSciences, Chang′an University, Xi′an 710064, China
Keywords:
phonon ; thermal conductivity ; mantle ; mineral
PACS:
P574.19;O545
DOI:
-
Abstract:
According to the new literatures of the physical properties of minerals in the mantle under high temperature and high pressure, the processes of stimulation, transfer and absorption of phonons of minerals in the mantle were investigated by using nonequilibrium quantum statistics. It had been found that the mechanism of the thermal conductivity of phonons of minerals in the mantle could be divided into three kinds. The results show that: In the transit zone and submantle, the phonon thermal conductivity is the main mechanism of minerals in the mantle because that pressural effects surpassing temperatural effect causes phonon thermal conductivity increasing with the depth;In the mantle, if Boses condensing phenonmenon under nonlinearity and nonequi-librium state exists, a great quantity of optical braching phonons will enter the same vibration energy level and the optical braching phonons will play a leading role in the phonon thermal conductivity.

References:

[1] Lubimova E A .The Earths Mant le[M] .Ed.T .F .Gaskell , Acad , Press .1967 .259 .
[2] Mao H K , Carneg.Inst.Washington Yearbook[M] .1973 .561 .
[3] 胡照林.统计热力学[M] .长沙:湖南科学技术出版社, 1982 . 87 .

Memo

Memo:
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Last Update: 2004-06-20