Effects of dipole tilt angle on geomagnetic activity

NCU Institutional Repository > 地球科學學院 > 太空科學研究所 > 期刊論文 > Item 987654321/27396

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/27396

题名:	Effects of dipole tilt angle on geomagnetic activity
作者:	Nowada,M;Shue,JH;Russell,CT
贡献者:	太空科學研究所
关键词:	SEMIANNUAL VARIATION;SUBSTORMS
日期:	2009
上传时间:	2010-06-29 18:37:34 (UTC+8)
出版者:	中央大學
摘要:	The relationship between the orientation of the interplanetary magnetic field (IMF), represented by the clock angle which is the angle defined by IMF-B-y and -B-z components, and the AL and AU indices is examined at various dipole tilt angles for the period of 1978-1988. We use the IMF data obtained from the IMP 8 satellite, AL and AU indices with corrected seasonal variations, and the dipole tilt angle, which is the dipole magnetic latitude of the subsolar point calculated as a function of the day of year and universal time. For both positive (dipole tilted to the Sun) and negative dipole tilt angles, the values of vertical bar AL vertical bar and AU decrease as the IMF clock angle moves away from 180 degrees. becoming more northward. The indices also tend to become smaller for larger dipole tilt angle, either toward or away from the Sun. This dependence on dipole tilt angle enhances the semiannual variation of geomagnetic activity. (C) 2009 Elsevier Ltd. All rights reserved.
關聯:	PLANETARY AND SPACE SCIENCE
显示于类别:	[太空科學研究所 ] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	381	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing