What solar and geomagnetic activities does F2-layer critical frequency median correspond to in midlatitudes?

被引：2
|
作者：
Deminov, M. G. [1 ]
Deminova, G. F. [1 ]
机构：
[1] Russian Acad Sci, Pushkov Inst Terr Magnetism Ionosphere & Radio Wa, Moscow 142190, Russia
来源：
GEOMAGNETISM AND AERONOMY | 2015年 / 55卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
LONG-TERM TRENDS; F2; LAYER; MODEL; FOF2; IONOSPHERE; INDEX;
D O I：
10.1134/S0016793215030068
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：
A correlation was found between indices of solar and geomagnetic activities for monthly foF2 median and average values of these indices on the basis of an analysis of data on the F2-layer critical frequency foF2 from Slough and Chilton stations for 1954-2013. It was found that there is no systematic difference between the index of solar activity for a median foF and the 81-day or yearly average index of this activity. Cases in which a foF2 median corresponds to high geomagnetic activity are about 3-4 times rarer than observed cases of this high activity. Therefore, the geomagnetic activity that corresponds to a foF2 median is lower than the monthly average index of this activity on average, and this difference increases as the geomagnetic activity grows. The behaviors of relations between solar and geomagnetic activity indices for a foF2 median and the average values of these indices almost coincide for periods of relatively high (1954-1995) and low (1996-2003) solar and geomagnetic activity.
引用
收藏
页码：326 / 332
页数：7
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