@article{oai:nagoya.repo.nii.ac.jp:00018500, author = {Tsunomura, S. and Kuwashima, M. and Kainuma, S. and Kikuchi, T.}, issue = {2}, journal = {Proceedings of the Research Institute of Atmospherics, Nagoya University}, month = {Nov}, note = {The relationship is described between geomagnetic variations and HF Doppler frequencies for the oscillative variation following the Si event at 1748 UT on February 9, 1986. After comparing time differences between geomagnetic variations and HF Doppler frequencies, it is suggested that the electric fields variations deduced from the HF Doppler frequencies data for this event are due to compressional mode HM waves excited by the dynamic response of the magnetosphere to the solar wind pressure variations., This special issue contains contributed papers presented at the symposium "Solar Terrestrial Events in February-March 1986" (January 19, 1989, Nagoya)}, pages = {115--118}, title = {ELECTRIC FIELD VARIATION OF THE IONOSPHERE AFTER THE SI ON FEBRUARY 9, 1986}, volume = {36}, year = {1989} }