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The correlation of flare’s location on solar disc and the sudden increase of total electron content 总被引:1,自引:0,他引:1
The correlation of flare's location on solar disc with the value of sudden increase of total electron content is analyzed with flare's parameters observed by GOES satellite from 1997 to 1999 and total electron content derived from GPS data observed by international GPS Service for Geodynamics. It is found that, besides the flare's maximum X-ray flux, flare's location on solar disc has some relation with the value of SITEC during the flare. The ionospheric response to a flare with a smaller maximum X-ray flux and nearer angular distance to the Sun's central meridian line may be stronger than that of the flare with a larger maximum X-ray flux and far angular distance. To the flares with the same class of maximum X-ray flux, the nearer the angular distance to the Sun's meridian, the stronger the ionospheric response. 相似文献
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ZHANG Donghe XIAO Zuo LIU Jing LIU Siqing & GONG Jiancun .Department of Geophysics Peking University Beijing China .Center for Space Science Applied Research Chinese Academy of Sciences Beijing China 《科学通报(英文版)》2004,49(15):1570-1574
The sudden increase in X-ray and EUV flux duringthe outburst of a large flare greatly elevate the electrondensity of the ionosphere, causing sudden ionosphericdisturbances (SIDs), such as sudden wave fadeout (SFD),sudden phase anomaly (SPA), sudden frequency deviation(SFD) and sudden increase in total electron content(SITEC)[1—4]. Two review articles addressed SIDs in detailrecently[5,6]. Due to the limitation of observing methods,the global ionospheric morphology during solar flares… 相似文献
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