On sudden commencements of magnetic storms at higher latitudes
On sudden commencements of magnetic storms at higher latitudes
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高纬度地区突然爆发磁暴
DOI：
10.1029/jz062i001p00162
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发表时间：
1957
影响因子：
--
通讯作者：
S. Matsushita
中科院分区：
文献类型：
--
作者：
S. Matsushita
这封信描述了一种以前文献中没有讨论过的磁暴突然开始的类型。这种突然的开始发生在高纬度地区，它的特征已经在巴罗点的磁图中研究过了（71.3°N，156.8°W; gm 68°N），学院（64.9°N，147.8°W; gm 65°N），切尔滕纳姆（38.7°N，76.8°W; gm 50°N），图森（32.3°N，110.8°N; gm 40°N）、圣胡安（18.4°N，66.1°W; gm 30°N）和檀香山（21.3°N，158.1°W; gm 21°N）。
在此期间，观察到44个突然开始。其中21个在高纬度观测到，其特征是在水平分量中的主要正脉冲之前有一个小的负脉冲，因此被命名为−Sc（通常用符号Sc* 表示）。
This communication describes a type of sudden commencement of magnetic storms not previously discussed in the literature. This type of sudden commencement occurs at higher latitudes, and its characteristics have been studied in magnetograms made at Point Barrow (71.3°N, 156.8°W; gm 68°N), College (64.9°N, 147.8°W; gm 65°N), Cheltenham (38.7°N, 76.8°W; gm 50°N), Tucson (32.3°N, 110.8°N; gm 40°N), San Juan (18.4°N, 66.1°W; gm 30°N), and Honolulu (21.3°N, 158.1°W; gm 21°N), during the period from July 1949 to March 1956.
During that period, 44 sudden commencements were observed. Twenty-one of them, observed at higher latitudes, were characterized by a small negative impulse preceding the main positive impulse in the horizontal component, and thus were designated as −Sc (usually denoted by the symbol Sc*).