Yu. S. Zagainova, S. V. Gromov, L. I. Gromova, V. G. Fainshtein
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引用次数: 0
Abstract
The article presents the results of a studying detection of the sudden commencement (SC) and main impulse (MI) of a magnetic storm as a function of the geographic coordinates of magnetic observatories and Universal Time, using modern data with second time resolution. The analysis was carried out for two events in which an interplanetary shock wave impacting the magnetosphere was associated with interplanetary coronal mass ejections (CMEs) with sources in different hemispheres of the Sun. The authors propose an approach to determine the time points of SC and MI detection. It is concluded that the SC and MI detection times may differ by several seconds to more than a minute at magnetic observatories located at different geographic latitudes and longitudes. For the studied events, the graphs of SC and MI detection as functions of the geographic coordinates of magnetic observatories and Universal Time revealed trends according to which, on average, the higher station the latitude, the later SC and MI are detected at the station.
摘要 本文介绍了利用具有秒时间分辨率的现代数据对磁暴的突然开始（SC）和主脉冲（MI）作为磁观测站地理坐标和世界时的函数进行研究探测的结果。分析是针对两个事件进行的，在这两个事件中，行星际冲击波撞击磁层与行星际日冕物质抛射（CMEs）有关，其来源位于太阳的不同半球。作者提出了一种确定 SC 和 MI 检测时间点的方法。结论是，在位于不同地理纬度和经度的磁观测站，SC 和 MI 的探测时间可能相差几秒到一分多钟。对于所研究的事件，SC 和 MI 的探测时间与磁性观测站的地理坐标和世界时的函数关系图显示了这样的趋势：平均而言，纬度越高的观测站，其 SC 和 MI 的探测时间越晚。
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.
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