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GEOTAIL SPACECRAFT OBSERVATIONS OF NEAR-TAIL DIPOLARIZATION AND PLASMA FLOW DURING THE SUBSTORM EXPANSION
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  • GEOTAIL SPACECRAFT OBSERVATIONS OF NEAR-TAIL DIPOLARIZATION AND PLASMA FLOW DURING THE SUBSTORM EXPANSION
  • GEOTAIL SPACECRAFT OBSERVATIONS OF NEAR-TAIL DIPOLARIZATION AND PLASMA FLOW DURING THE SUBSTORM EXPANSION
저자명
Lee. D.Y.,Min. K.W.,Lee. E.S.
간행물명
韓國宇宙科學會誌
권/호정보
2000년|17권 2호|pp.141-146 (6 pages)
발행정보
한국우주과학회
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

Some observational features on the July 5, 1995 substorm event are presented using the data from the Geotail satellite which was located at near-Earth plasma sheet, ${X}_{GSE}$ ∼ $-9.6R_{E}$, and quite close to the onset sector. Near-tail magnetic field reveals the typical dipolarizations starting ar ∼ 11-4 UT until ∼ 1113 UT. During the interval, two dipolarizations occur: First dipolarization is not strong and accompanies only weak(<150km/s) earthward/dawnward plasma flows, and in the second dipolarization that follows shortly, rather large amplitude magnetic fluctuations are seen, but it initiates with no significant earthward flow. The earthward bursty flow with a maximum speed of > 450km/s was observed, but delayed by ∼ 1 min with respect to the second dipolarization initiation. These features are in conflict with the flow-braking scenario for the substorm. Rather they fit better in the near-tail current disruption scenario.