磁场反转和偏移过程中偶极子和四极子的同步性

IF 0.9 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Izvestiya, Physics of the Solid Earth Pub Date : 2024-07-03 DOI:10.1134/S1069351324700228

M. Yu. Reshetnyak

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引用次数: 0

摘要

摘要与逆转相反，地磁场偏移可能发生在地核对流强度较低的情况下。由于在这种地球动力机制下，磁场行为仍然是准规则的，因此在偏移期间偶极子场的减弱可能表明动力机制过程的全面失败。因此，在偏移过程中，不仅偶极子分量有可能减小，磁场的高次谐波也有可能减小。这一假设在三维（3D）动力模型中得到了验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Synchrony between Dipole and Quadrupole During Magnetic Field Reversals and Excursions

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Synchrony between Dipole and Quadrupole During Magnetic Field Reversals and Excursions

Abstract—In contrast to reversals, geomagnetic field excursions can occur at lower convection intensity in the Earth’s core. Since in such geodynamo regimes the magnetic field behavior is still quasi regular, a reduction in the dipole field during excursion may indicate a global failure in the dynamo process. As a consequence, it is possible that during the excursion, not only the dipole component, but also higher harmonics of the field decrease. This hypothesis is tested in a 3D (3D) dynamo model.

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来源期刊

Izvestiya, Physics of the Solid Earth 地学-地球化学与地球物理

CiteScore

1.60

自引率

30.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Izvestiya, Physics of the Solid Earth is an international peer reviewed journal that publishes results of original theoretical and experimental research in relevant areas of the physics of the Earth''s interior and applied geophysics. The journal welcomes manuscripts from all countries in the English or Russian language.