Publications of The Korean Astronomical Society (천문학논총)
- Volume 15 Issue spc2
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- Pages.53-56
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- 2000
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- 1225-1534(pISSN)
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- 2287-6936(eISSN)
ON THE RELATIONSHIP BETWEEN SUBSTORM CURRENT SYSTEM AND BURSTY BULK FLOWS AT NEAR TAIL
서브스톰 전류계와 BBF 사이의 관계에 대하여
- LEE DAE-YOUNG (Physics Department, Korea Advanced Institute of Science and Technology) ;
- MIN KYOUNG WOOK (Physics Department, Korea Advanced Institute of Science and Technology)
- Published : 2000.12.01
Abstract
We investigate the critical issue on how the BBF (bursty bulk flow) is related to the substorm current wedge formation. Observationally, after analysing data sets from Geotail spacecraft at near tail and many ground magnetic observatories for 9 months period of 1996, we find three BBF events that clearly occurred at the center of the wedge with region I type FAC (field-aligned current), and two other BBF events that were seen outside the wedge sector. Theoretically, we suggest that the substorm current wedge generation by BBF is most likely when the h' VB contribution is dominant in the well-known MHD