Analysis of S(p)q current systems by using corrected geomagnetic coordinates

• Main Authors: Hongfei, Chen, Gengxiong, Chen, Fenglin, Peng, Wenyao, Xu
• Format: Article in Journal/Newspaper
• Language: English
• Published: Polar Research Institute of China - PRIC 2000
• Subjects: Advances in Polar Science; Polar Science
• Online Access: http://library.arcticportal.org/2198/; http://library.arcticportal.org/2198/1/A200001007.pdf

The S(p)q equivalent current system of the quiet day geomagnetic variation in the polar region is very complicated. It is composed of several currents, such as the ionospheric dynamo current and the auroral electrojet caused by the field-aligned current. S(p)q is unsymmetrical in both polar regions. In this paper, the S(p)q current systems are analyzed in the corrected geomagnetic coordinates (CGM) instead of the conventional geomagnetic coordinates (GM), and the symmetries of the S(p)q current in different systems are compared. Then the causes of S(p)q asymmetry in the GM coordinates are discussed; the effects of each component in S(p)q are determined.