کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1766211 | 1020140 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cluster observations of earthward propagating plasmoid and flux ropes in the near-tail during the course of a substorm event
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
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چکیده انگلیسی
We analyze the magnetic structures in the near-tail at Xgsm = â17.5 Re on September 19, 2003 by Cluster. During the course of a substorm event, the earthward propagating plasmoid and flux ropes in the near-tail are observed. The earthward propagating plasmoid is associated with the bipolar Bz and By signatures. The two flux ropes are embedded within the earthward plasma flows, which might be referred to the population as ''BBF-type'' flux ropes. The first flux rope diameter is about 0.7 Re and duration based upon the Bz signature is â¼20 s, while the second one diameter is about 1.4 Re and duration is â¼30 s. The earthward propagating plasmoid and flux ropes could have influence upon the dipolarization and injection in inner magnetosphere. The Cluster observations of earthward propagating plasmoid and flux ropes can be interpreted as strong evidence for multiple X-lines. Our observations are consistent with that multiple plasmoids or flux ropes are formed repeatedly and ejected tailward in the course of geomagnetically active time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 43, Issue 9, 1 May 2009, Pages 1337-1342
Journal: Advances in Space Research - Volume 43, Issue 9, 1 May 2009, Pages 1337-1342
نویسندگان
C.L. Tang, Z.Y. Li, L. Lu,