Parallel electric fields produced by ionospheric injection

IF 1.7 4区地球科学 Q3 ASTRONOMY & ASTROPHYSICS

Annales Geophysicae Pub Date : 2023-09-19 DOI:10.5194/angeo-41-369-2023

Osuke Saka

引用次数: 0

Abstract

Abstract. It is well known that there exists a thin layer in the lower boundary of the ionosphere between altitudes of 80 and 140 km in which collisional ions and collisionless electrons mix. Local breakdown of charge neutrality may be initiated in this layer by electric fields from the magnetosphere as well as by electric fields generated there by the local neutral winds. The breakdown may be momentarily canceled by Pedersen currents, but complete neutralization is prevented because some ionospheric plasmas are released as outflows by parallel electric fields. Those parallel electric fields are produced by inherent plasma processes in the polar ionosphere and act as auroral drivers. A new scenario creating parallel potential gradients is proposed.

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电离层注入产生的平行电场

摘要众所周知，在电离层的下界，在海拔80至140公里之间存在着一层很薄的物质，在这层物质中，发生碰撞的离子和没有发生碰撞的电子混合在一起。来自磁层的电场以及由局部中性风产生的电场可能在这一层引起电荷中性的局部破坏。彼得森电流可以暂时消除击穿，但由于平行电场释放出一些电离层等离子体，因此无法完全中和。这些平行电场是由极地电离层中固有的等离子体过程产生的，并充当极光驱动器。提出了一种产生平行电位梯度的新方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Annales Geophysicae 地学-地球科学综合

CiteScore

4.30

自引率

0.00%

发文量

审稿时长

2 months

期刊介绍： Annales Geophysicae (ANGEO) is a not-for-profit international multi- and inter-disciplinary scientific open-access journal in the field of solar–terrestrial and planetary sciences. ANGEO publishes original articles and short communications (letters) on research of the Sun–Earth system, including the science of space weather, solar–terrestrial plasma physics, the Earth''s ionosphere and atmosphere, the magnetosphere, and the study of planets and planetary systems, the interaction between the different spheres of a planet, and the interaction across the planetary system. Topics range from space weathering, planetary magnetic field, and planetary interior and surface dynamics to the formation and evolution of planetary systems.