Pulsation of the Earth's electromagnetic field with periods of 1 to 15 seconds and their connection with phenomena in the high atmosphere
Pulsation of the Earth's electromagnetic field with periods of 1 to 15 seconds and their connection with phenomena in the high atmosphere
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地球电磁场周期为 1 至 15 秒的脉动及其与高层大气现象的联系
DOI：
10.1029/jz066i001p00005
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发表时间：
1961
影响因子：
--
通讯作者：
V. Troitskaya
中科院分区：
文献类型：
--
作者：
V. Troitskaya
给出了在1到15秒的周期范围内研究地电流脉动的第一个结果。使用了位于北极(5个站)、南极(2个站)和苏联中纬度(10个站)的地球电流站的数据，以及3个站的高灵敏度磁场(Z)配准装置的数据。在这一周期范围内确定了几种特征脉动类型，并研究了它们与高层大气现象的关系，其中包括：(A)构成几种形式的磁场宏观扰动的微观结构的短不规则脉动(T∼1-15秒)，并与极光密切相关；和(B)“珍珠型”脉动(T∼1-4秒)，这种脉动形式规则，与平流层宇宙线强度爆发有关。
给出了磁暴组织的主要特征，以及SSC的微观结构。强调了磁暴期间“周期减小的脉动”的发生及其与高层大气现象的相关性研究的重要性。描述了SSC精细结构对局部时间的依赖关系。与一些理论预期相反，由于SSC引起的第一次运动之间的时间差被发现非常小；这些运动甚至可能是同时进行的。对于Argus III爆炸，发现振荡开始时间在1秒内。
The first results of investigations of earth current pulsations in the range of periods of 1 to 15 seconds are presented. Data of earth current stations located in the Arctic (5 stations), in the Antarctic (2 stations), and in middle latitudes of the USSR (10 stations), as well as data of high-sensitivity installations for magnetic-field (Z) registration at 3 stations, were used. Several characteristic types of pulsations were defined in this range of periods, and their correlation with phenomena in the high atmosphere was studied, among them: (a) short irregular pulsations (T ∼1–15 sec) composing the microstructure of several forms of macroscopic disturbances of the magnetic field and showing a close correlation with aurora; and (b) pulsations of the ‘pearl’ type (T∼1–4 sec), distinguished by their regular form and showing a correlation with cosmic-ray intensity bursts in the stratosphere.
The main features of magnetic-storm microstructure, as well as the microstructure of SSC, are given. The importance of the occurrence during magnetic storms of ‘pulsations with diminishing periods’ and correlation studies with high-atmosphere phenomena is stressed. The dependence on local time of the fine structure of SSC is described. Contrary to some theoretical expectations the time difference between the first movements due to SSC was found to be very small; the movements may even have been simultaneous. For the Argus III explosion the onset time of oscillation was found to be within 1 second.