Density inhomogeneities of the Earth's mantle and core

被引：4
|
作者：
Chuikova, N. A. [1 ]
Maksimova, T. G. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, State Astron Inst, Moscow 119991, Russia
来源：
MOSCOW UNIVERSITY PHYSICS BULLETIN | 2010年 / 65卷 / 02期
关键词：
crust; mantle; core; density inhomogeneities; gravity anomalies; hydrostatic equilibrium; INNER-CORE; NORMAL-MODE; SHEAR VELOCITY; HETEROGENEITY; INVERSION;
D O I：
10.3103/S0027134910020128
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Lateral density variations are determined at depth and are characterized by the anomalies of the seismic waves velocities, which are consistent with both the anomalies of the external gravity field and with the data from the analysis of Earth's free-oscillation minimizing the deviations of the internal Earth structure from a hydrostatically equilibrated structure. It is shown that the obtained anomalous structures cause anomalies of the gravity field inside the Earth, which may be conducive to convective movements in the mantle and core.
引用
收藏
页码：137 / 144
页数：8
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