Randomization of the Earth's magnetic field driven by magnetic helicity

被引：1

作者：

Bershadskii, Alexander ^{[1
]}

机构：

[1] ICAR, POB 31155, IL-91000 Jerusalem, Israel

来源：

PHYSICS OF THE EARTH AND PLANETARY INTERIORS | 2024年 / 356卷

关键词：

Spatial and temporal geomagnetic field variability; Geomagnetic dynamo; Geomagnetic observations;

D O I：

10.1016/j.pepi.2024.107250

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, using results of numerical simulations and geomagnetic observations, that the spatial and temporal randomization of the Earth's global and local magnetic fields is driven by magnetic helicity (an ideal magnetohydrodynamic invariant). In the frames of the distributed chaos notion, the magnetic helicity determines the degree of magnetic field randomization and the results of numerical simulations are in quantitative agreement with the geophysical observations despite the considerable differences in the scales and physical parameters.

引用

页数：6