比斯开湾上空电子总量对磁暴的响应

本文论述过去十年中,在英国Aberystwyth城观测同步卫星Intelsat IIF2和SIRIO信标时获得的大西洋比斯开湾上空电子总量对磁暴的响应。所选择的地磁-电离层暴分属前后两个太阳活动较高周期,主要集中在春秋分阶段和冬夏至阶段。文中指出,春分期间连续型磁暴使TEC在正相效应之后出现加长的凋落周期,集中型磁暴导致TEC在正相之后产生凋落周期缩短;春秋分和冬夏至时磁暴伴生的电子总量形态受制于急始时刻与次数、磁暴主相、磁暴指数(即暴时位置和暴情指数)等因素。 

The Response of the Ionospheric TEC to Magnetic Storms over the Bay of Biscay

This paper deals with the response of total electron content of the ionosphere over the Bay of Biscay, the Northeast Atlantic Ocean, to geomagnetic storms observed at Aberystwyth, U. K, from geostationary beacon satellites Intelsat IIF2 and SIRIO during the last ten years. The magneto-ionospheric storms selected belong to maxima of the 20th and 21st solar periods and are around the equinoxes and solstices. It is outlined that in spring months, the longish TEC depletion period appears after positive phase effect of continuous magnetic storm, and on the other hand, the short TEC depletion follows the concentrative magnetic storm. The TEC morphology associating with storms during equinoxes and solstices is influenced by some storm indices such as sudden commencement time and SSC occurrence frequency, season, storm main phase, Dst, Kp, Ap, etc.