The correlation of flare's location on solar disc and the sudden increase of total electron content  

作　　者：ZHANG Donghe, XIAO Zuo & CHANG QingDepartment of Geophysics, Peking University, Beijing 100871, China Qingdao Research Center, China Research Insitute of Radio-wave Propagation, Qingdao 266071, China Department of Electronic Engineering, Beijing Universit 

出　　处：《Chinese Science Bulletin》2002年第1期82-85,共4页

基　　金：This work was supported by the National Natural Science Foundation of C'hina (Grant Nos. 49874041 and 49990455).

摘　　要：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 Geo-dynamics. 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 maxi-mum X-ray flux and far angular distance. To the flares with the same class of maximum X-ray flux, the nearer the angu-lar distance to the Sun’s meridian, the stronger the ionospheric response.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 Geo-dynamics. 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 maxi-mum X-ray flux and far angular distance. To the flares with the same class of maximum X-ray flux, the nearer the angu-lar distance to the Sun's meridian, the stronger the ionospheric response.

关 键 词：FLARE SITEC GPS. 

分 类 号：P182.52[天文地球—天文学]