Observations of tailward streaming ions in the near-earth tail during a magnetospheric substorm

被引：0

作者：

Haland, S ^{[1
]}

Ullaland, S ^{[1
]}

Doke, T ^{[1
]}

Reeves, GD ^{[1
]}

Wilken, B ^{[1
]}

Zong, QG ^{[1
]}

Yamamoto, T ^{[1
]}

机构：

[1] Univ Bergen, Dept Phys, N-5007 Bergen, Norway

来源：

POLAR CAP BOUNDARY PHENOMENA | 1998年 / 509卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A tailward moving plasmoid (flux rope) was observed by the GEOTAIL spacecraft at [-22, 5, -3 R-E GSE] after a period with strong geomagnetic activity on November 27, 1995. The structure exhibited classic plasmoid like signatures; bipolar B-Z, a strong core field and tailward streaming ions. Measurements from the solar wind and the ground show that the GEOTAIL-observations were correlated with a change in the IMF and a substorm onset. Together, these observations suggest that the flux rope was launched as a result of magnetic reconnection during substorm onset, and that the reconnection site was located earthward of -22 R-E. TO our knowledge, observations of similar substorm associated flux rope formation and tailward streaming ions at such distances have not been reported earlier.

引用

页码：393 / 402

页数：10