Relation between substorm characteristics and rapid temporal variations of the ground magnetic field
Relation between substorm characteristics and rapid temporal variations of the ground magnetic field
复制标题
亚暴特征与地面磁场快速时间变化之间的关系
DOI：
10.5194/angeo-24-725-2006
复制
发表时间：
2006
影响因子：
1.9
通讯作者：
A. Pulkkinen
中科院分区：
文献类型：
--
作者：
A. Viljanen;E. Tanskanen;A. Pulkkinen
抽象的。极光亚暴是技术系统中大地磁感应电流（GIC）的主要原因之一。本研究从GIC的观点讨论了极光亚暴的不同阶段及其严重程度。我们的数据库包含了IMAGE磁力仪网络在1997年（太阳黑子极小期前后）和1999年（太阳黑子周期上升期）观测到的833个亚暴，根据Dst指数分为两类：非暴（Dst>-40 nT，696个事件）和暴时亚暴（Dst
Abstract. Auroral substorms are one of the major causes of large geomagnetically induced currents (GIC) in technological systems. This study deals with different phases of the auroral substorm concerning their severity from the GIC viewpoint. Our database consists of 833 substorms observed by the IMAGE magnetometer network in 1997 (around sunspot minimum) and 1999 (rising phase of the sunspot cycle), divided into two classes according to the Dst index: non-storm (Dst>-40 nT, 696 events) and storm-time ones (Dst