@article{oai:nagoya.repo.nii.ac.jp:00018488, author = {Watanabe, Takashi and Kikuchi, Takashi and Iwata, Akira}, issue = {2}, journal = {Proceedings of the Research Institute of Atmospherics, Nagoya University}, month = {Nov}, note = {A brief summary of significant solar-terrestrial events occurring in February-March 1986 is presented. Unusually high solar-terrestrial activity was observed in early February 1986. A series of large solar flares took place within the active region of NOAA #4711 during the period 3-7 February 1986. A geomagnetic storm which took place at 13:12 UT on 6 February reached its maximum phase through 8-9 February. The minimum Dst of -312 nT was recorded on early 9 February. It took more than a month to show full recovery. This magnetic storm will be a good example to study various terrestrial events in association with high solar-flare activity. March 1986 was another important interval because extensive observations of comet Halley were performed. Large-scale solar wind structures in the minimum activity phase of the sun and their influences on plasma-tail activity of the comet will be of interest., This special issue contains contributed papers presented at the symposium "Solar Terrestrial Events in February-March 1986" (January 19, 1989, Nagoya)}, pages = {1--16}, title = {SOLAR-TERRESTRIAL EVENTS IN FEBRUARY-MARCH 1986}, volume = {36}, year = {1989} }