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An analysis of thermospheric density response to solar flares during 2001-2006
Le, Huijun; Liu, Libo; Wan, Weixing; Le, HJ (reprint author), Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing 100029, Peoples R China.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2012
Volume117Pages:A03307
ISSN2169-9380
Language英语
AbstractPrevious studies show there are significant thermospheric responses to the two great solar flares on October 28, 2003 (X17.2) and November 4, 2003 (X28). In the present study, we further explored the thermospheric response to all X-class solar flares during 2001-2006. The observed results show that X5 and stronger solar flares can induce an average enhancement of 10-13% in thermospheric density in latitude 50 degrees S-50 degrees N within similar to 4 h after the flare onset. Many important lines and continua in solar EUV region are optically thick, thus EUV enhancements are smaller for flares located near the solar limb due to absorption by the solar atmosphere. Limb flares induce smaller thermospheric responses, due to the limb effect of solar EUV. The thermospheric density enhancement is much more correlated with integrated EUV flux than with peak EUV flux, with a high correlation coefficient of 0.91, which suggests that thermospheric response is strongly dependent on the total integrated energy into the thermosphere.; Previous studies show there are significant thermospheric responses to the two great solar flares on October 28, 2003 (X17.2) and November 4, 2003 (X28). In the present study, we further explored the thermospheric response to all X-class solar flares during 2001-2006. The observed results show that X5 and stronger solar flares can induce an average enhancement of 10-13% in thermospheric density in latitude 50 degrees S-50 degrees N within similar to 4 h after the flare onset. Many important lines and continua in solar EUV region are optically thick, thus EUV enhancements are smaller for flares located near the solar limb due to absorption by the solar atmosphere. Limb flares induce smaller thermospheric responses, due to the limb effect of solar EUV. The thermospheric density enhancement is much more correlated with integrated EUV flux than with peak EUV flux, with a high correlation coefficient of 0.91, which suggests that thermospheric response is strongly dependent on the total integrated energy into the thermosphere.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3238
Collection空间科学部
Corresponding AuthorLe, HJ (reprint author), Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing 100029, Peoples R China.
Recommended Citation
GB/T 7714
Le, Huijun,Liu, Libo,Wan, Weixing,et al. An analysis of thermospheric density response to solar flares during 2001-2006[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2012,117:A03307.
APA Le, Huijun,Liu, Libo,Wan, Weixing,&Le, HJ .(2012).An analysis of thermospheric density response to solar flares during 2001-2006.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,117,A03307.
MLA Le, Huijun,et al."An analysis of thermospheric density response to solar flares during 2001-2006".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 117(2012):A03307.
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