南北半球观测站临界频率 foF2 的变化趋势

IF 0.7 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Geomagnetism and Aeronomy Pub Date : 2024-06-19 DOI:10.1134/S0016793224600085

A. D. Danilov, A. V. Konstantinova, N. A. Berbeneva

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引用次数: 0

摘要

摘要根据北半球三个观测站（朱利叶斯鲁、博尔德和莫斯科）和南半球三个观测站（汤斯维尔、霍巴特和堪培拉）的垂直探测观测结果，研究了F 2层临界频率foF 2的长期趋势。采用的是作者开发并广泛介绍的一种方法。分析了每个半球两个冬季月份的五个近午 LT 时刻的数据。使用了三个太阳活动（SA）代用指标（F 30、Ly-α 和 MgII）来消除 SA 的影响。在所有考虑的情况下（观测站、月份、低纬度时刻、SA 代用指标）都得到了负趋势。如果对南半球和北半球的观测站进行单独比较或综合比较，这些趋势都非常吻合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Trends in the Сritical Frequency foF2 at Stations of the Northern and Southern Hemispheres

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Trends in the Сritical Frequency foF2 at Stations of the Northern and Southern Hemispheres

A search for long-term trends in the F 2 layer critical frequency foF 2 is performed based on vertical sounding observations at three stations of the Northern Hemisphere (Juliusruh, Boulder, and Moscow) and three stations of the Southern Hemisphere (Townsville, Hobart, and Canberra). A method developed and extensively described by the authors is used. The data for two winter months in each hemisphere for five near-noon LT moments were analyzed. Three solar activity (SA) proxies (F 30, Ly-α, and MgII) were used to eliminate SA effects. Negative trends are obtained for all considered situations (station, month, LT moment, SA proxy). The trends agree well with each other both if stations of the Northern and Southern hemispheres are compared individually or in aggregate.

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来源期刊

Geomagnetism and Aeronomy Earth and Planetary Sciences-Space and Planetary Science

CiteScore

1.30

自引率

33.30%

发文量

审稿时长

4-8 weeks

期刊介绍： Geomagnetism and Aeronomy is a bimonthly periodical that covers the fields of interplanetary space; geoeffective solar events; the magnetosphere; the ionosphere; the upper and middle atmosphere; the action of solar variability and activity on atmospheric parameters and climate; the main magnetic field and its secular variations, excursion, and inversion; and other related topics.