On the Ekman instability at the core-mantle boundary

被引：0
|
作者：
Chkhetiani, O. G. [1 ,3 ]
Shalimov, S. L. [2 ,3 ]
机构：
[1] Russian Acad Sci, Obukhov Inst Atmospher Phys, Pyzhevskii Per 3, Moscow 119017, Russia
[2] Russian Acad Sci, Schmidt Inst Phys Earth, Ul B Gruzinskaya 10, Moscow 123995, Russia
[3] Russian Acad Sci, Space Res Inst, Ul Profsoyuznaya 84-32, Moscow 117997, Russia
来源：
IZVESTIYA-PHYSICS OF THE SOLID EARTH | 2016年 / 52卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
hydromagnetic flows; Earth's core; instability; core-mantle boundary; SEISMIC EVIDENCE; PARTIAL MELT; IRON; MECHANISM; LAYER; BASE;
D O I：
10.1134/S1069351316030022
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：
It is shown that the instability of turbulent flows with Ekman velocity profiles in the vicinity of the core-mantle boundary leads to the formation of horizontally oriented circulating roll structures. The geophysical implications of the presence of such structures in the liquid core are explored, namely, the formation of the hot zones with enhanced conductivity and their influence on geomagnetic reversals.
引用
收藏
页码：337 / 343
页数：7
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