Magnetospheric sawtooth events during the solar cycle 23
Magnetospheric sawtooth events during the solar cycle 23
复制标题
太阳周期期间的磁层锯齿事件 23
DOI：
10.1002/2013ja018819
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
C. Clauer
中科院分区：
文献类型：
--
作者：
X. Cai;C. Clauer
地球的磁层和电离层对不同的太阳活动有不同的反应。因此，有几种类型的磁层响应模式；其中一种被称为锯齿形注入事件。目前，锯齿事件的发生是否与太阳周期有关尚不清楚。这在一定程度上是因为缺乏涵盖整个太阳周期的事件列表。在这项研究中，我们将原来的事件列表扩展到了第23个太阳周期，现在包括了1996到2007年的126个事件。锯齿事件根据其太阳风驱动因素被分为三类：行星际日冕物质抛射、流相互作用区和其他。然后，我们详细考察锯齿事件的发生是否与太阳周期和季节有关。我们还检验了一个假设，即锯齿事件的发生与磁层顶总侵蚀磁通量的阈值有关，而与太阳风结构无关。本文建议从太阳风、磁通量或能量的角度而不是从结构的角度来理解锯齿事件和其他对流模式，这是理解复杂的磁层动力学的一个重要思想。
The Earth's magnetosphere and ionosphere have a variety of responses to different solar activities. As a result, there are several types of magnetosphere response modes; one of which is termed sawtooth injection events. Currently, it is still unclear whether sawtooth events occurrence has a solar cycle dependence. Partially, this is due to a lack of an event list which covers a full solar cycle. In this research, we have extended our original event list to cover the solar cycle 23, which now includes 126 events from 1996 to 2007. Sawtooth events have been grouped into three categories based on their solar wind drivers: interplanetary coronal mass ejections, stream interaction regions, and others. Then we examine in detail whether sawtooth events occurrence has dependencies on solar cycle and season. We also test a hypothesis that sawtooth events occurrence is related to a threshold of total eroded magnetic flux at the magnetopause regardless of solar wind structures. This paper suggests understanding sawtooth events and other convection modes from solar wind magnetic flux or energy aspect rather than from structure aspect, which is an important idea to understand the complicated magnetosphere dynamics.
影响因子：
5.2
作者：
B. Hubert;S. Milan;A. Grocott;S. Cowley;J. Gérard
通讯作者：
B. Hubert;S. Milan;A. Grocott;S. Cowley;J. Gérard