Studies on sudden commencements of geomagnetic storms using IGY data from United States stations
Studies on sudden commencements of geomagnetic storms using IGY data from United States stations
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使用美国站的 IGY 数据研究突然爆发的地磁风暴
DOI：
10.1029/jz065i005p01423
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发表时间：
1960
影响因子：
--
通讯作者：
S. Matsushita
中科院分区：
文献类型：
--
作者：
S. Matsushita
本报告载有对美国七个国际地球物理年观测站网络记录的地磁暴变化的研究，以及美国运营的其他观测站的记录。该网络相邻站之间的距离为360至510公里。正如所料，这些观测站的地磁变化通常非常相似。然而，在磁暴期间，即使在相邻的台站之间也会出现显著的差异。
对于同一磁暴，约有一半的水平分量的突然开始在相邻台站表现出不同的形状。从这些结果中获得的数据，并从更远的站的观测，突然开始的行为进行检查。数据还表明，突然开始的垂直分量的变化不同的方式表明在美国中部的地球的导电性显着的不规则性。此外，偶尔的海湾形状的变化，在磁暴期间，这是相当不均匀的密集网的例子，进行了说明和分析。
This report contains studies of geomagnetic storm variations recorded at a network of seven IGY stations in the United States together with records for other observatories operated by the United States. The distance between adjacent stations of the network ranges from 360 to 510 km. Geomagnetic variations at these stations were usually quite similar, as would be expected. During magnetic storms, however, remarkable differences occurred even between adjacent stations.
About half of the sudden commencements of the horizontal component showed different shapes at adjacent stations for the same magnetic storm. From the data obtained from these results, and from observations at more distant stations, the behavior of sudden commencements is examined. The data also show that the variations of the vertical component of the sudden commencement differ in ways suggesting notable irregularities of the earth's conductivity in the central part of the United States. In addition, occasional examples of bay-shaped variations during magnetic storms, which are quite nonuniform over the closely spaced net, are illustrated and analyzed.