IMF effect on the polar cap contraction and expansion during a period of substorms

• Published in: Annales Geophysicae
• Main Authors: Aikio, A. T., Pitkänen, T., Honkonen, I., Palmroth, M., Amm, O.
• Format: Text
• Language: English
• Published: 2018
• Subjects: Omni; EISCAT
• Online Access: https://doi.org/10.5194/angeo-31-1021-2013; https://angeo.copernicus.org/articles/31/1021/2013/

The polar cap boundary (PCB) location and motion in the nightside ionosphere has been studied by using measurements from the EISCAT radars and the MIRACLE magnetometers during a period of four substorms on 18 February 2004. The OMNI database has been used for observations of the solar wind and the G...