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
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Cluster observations of earthward propagating plasmoid and flux ropes in the near-tail during the course of a substorm event
چکیده انگلیسی
We analyze the magnetic structures in the near-tail at Xgsm = −17.5 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 ∼20 s, while the second one diameter is about 1.4 Re and duration is ∼30 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
نویسندگان
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