Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094097 |
Development of Multiple Injection Channels during a Sawtooth Substorm Event | |
Weiqin Sun; Sina Sadeghzadeh; Jian Yang; Wenrui Wang; Jun Cui | |
2021-06-26 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Substorm injection boundary was proposed to explain the dispersion characteristics of particles during the substorm expansion phase. Sawtooth event, a peculiar quasi-periodic type of substorms, is believed to have a very wide injection boundary around geosynchronous orbit. In this study, we combine the numerical simulation of the Rice Convection Model with the IMAGE, LANL, and GOES data to investigate how the injection develops and couples with the ionosphere during a sawtooth substorm. We find the wide injection breaks up into multiple injection boundaries/channels with the local time separation of about 1∼2 h. Using backward tracing of energetic particles in the self-consistently computed electromagnetic field, we can infer the MLT locations of the channels, which are found to nearly one-to-one co-located with multiple finger-like auroral structures. Our study provides strong evidence that the interchange instability plays a central role in the development of multiple injection channels. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/333735 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Weiqin Sun,Sina Sadeghzadeh,Jian Yang,et al. Development of Multiple Injection Channels during a Sawtooth Substorm Event[J]. Geophysical Research Letters,2021. |
APA | Weiqin Sun,Sina Sadeghzadeh,Jian Yang,Wenrui Wang,&Jun Cui.(2021).Development of Multiple Injection Channels during a Sawtooth Substorm Event.Geophysical Research Letters. |
MLA | Weiqin Sun,et al."Development of Multiple Injection Channels during a Sawtooth Substorm Event".Geophysical Research Letters (2021). |
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