A CME-DRIVEN SOLAR-WIND DISTURBANCE OBSERVED AT BOTH LOW AND HIGH HELIOGRAPHIC LATITUDES

被引：63

作者：

GOSLING, JT

MCCOMAS, DJ

PHILLIPS, JL

PIZZO, VJ

GOLDSTEIN, BE

FORSYTH, J

LEPPING, RP

机构：

[1] NOAA, SPACE ENVIRONM LAB, BOULDER, CO 80303 USA

[2] CALTECH, JET PROP LAB, PASADENA, CA 91109 USA

[3] UNIV LONDON IMPERIAL COLL SCI & TECHNOL, BLACKETT LAB, LONDON SW7 2BZ, ENGLAND

[4] NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 1995年 / 22卷 / 13期

关键词：

D O I：

10.1029/95GL01776

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A solar wind disturbance produced by a fast coronal mass ejection, CME, that departed from the Sun on Feburary 20, 1994 was observed in the ecliptic plane at 1 AU by IMP 8 and at high heliographic latitudes at 3.53 AU by Ulysses. In the ecliptic the disturbance included a strong forward shock but no reverse shock, while at high latitudes the disturbance was bounded by a relatively weak forward-reverse shock pair. It is clear that the disturbance in the ecliptic plane was driven primarily by the relative speed between the CME and a slower ambient solar wind ahead, whereas at higher latitudes the disturbance was driven by expansion of the CME. The combined IMP 8 and Ulysses observations thus provide a graphic illustration of how a single fast CME can produce very different types of solar wind disturbances at low and high heliographic latitudes. Simple numerical simulations help explain observed differences at the two spacecraft.

引用

页码：1753 / 1756

页数：4

共 12 条

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