THERMAL-DIFFUSIVITY OF OLIVINE UNDER UPPER-MANTLE CONDITIONS

被引：53

作者：

KATSURA, T ^{[1
]}

机构：

[1] UNIV BAYREUTH,BAYER GEOINST,D-95540 BAYREUTH,GERMANY

来源：

GEOPHYSICAL JOURNAL INTERNATIONAL | 1995年 / 122卷 / 01期

关键词：

ANGSTROM METHOD; HIGH PRESSURES AND TEMPERATURES; OLIVINE; THERMAL DIFFUSIVITY; UPPER MANTLE;

D O I：

10.1111/j.1365-246X.1995.tb03536.x

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Thermal diffusivity of olivine with (Mg0.89Fe0.11)(2)SiO4 composition is measured at pressures up to 9 GPa and temperatures up to 1700 K using the Angstrom method in a cylindrical geometry. The experimental results demonstrate that lattice thermal diffusivity increases with increasing pressure at a small rate: 46 per cent increase over 10 GPa. The experimental data also suggest that radiative thermal diffusivity may decrease with increasing pressure. Thermal diffusivity in the upper mantle has almost constant values of 7-8 x 10(-7) m(2) s(-1).

引用

页码：63 / 69

页数：7

共 17 条

[1] HIGH-TEMPERATURE ELASTIC-CONSTANT DATA ON MINERALS RELEVANT TO GEOPHYSICS [J].