Influence of solar wind dynamic pressure on geomagnetic Dst index during   various magnetic storms

doi:10.1007/s11431-011-4319-y

CORC > 北京大学 > 地球与空间科学学院

	Influence of solar wind dynamic pressure on geomagnetic Dst index during various magnetic storms
	Zhao Hong ; Zong QiuGang ; Wei Yong ; Wang YongFu
刊名	science china technological sciences
	2011
关键词	corrected Dst index pressure correction geomagnetic storms with different intensity ART. NO. 1341 RING CURRENT DECAY INJECTION
DOI	10.1007/s11431-011-4319-y
英文摘要	The Dst index, designed as a proxy of ring current intensity, is known to be also affected by other magnetospheric current systems, e.g. magnetopause current. The pressure-corrected Dst index is obtained by removing the effects of the solar wind dynamic pressure and the quiet time ring current. However, all previous studies treated the correction coefficient as an averaged parameter for storms of different intensity. In this paper, based on the Burton's equations and employing two independent methods, we will show a positive correlation between pressure-correction coefficient b and the intensity of the storms. We divided our storm database (872 storms in total) into three categories according to the intensity of storms. In order to improve the accuracy of calculating, we also used the higher-resolution SYM-H index data instead of Dst index to compute the corrected Dst index during different storms. Furthermore, we are able to provide corrected magnetic storm index with high-time resolution (similar to 1 min).; Engineering, Multidisciplinary; Materials Science, Multidisciplinary; SCI(E); 0; ARTICLE; 6; 1445-1454; 54
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/148563]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhao Hong,Zong QiuGang,Wei Yong,et al. Influence of solar wind dynamic pressure on geomagnetic Dst index during various magnetic storms[J]. science china technological sciences,2011.
APA	Zhao Hong,Zong QiuGang,Wei Yong,&Wang YongFu.(2011).Influence of solar wind dynamic pressure on geomagnetic Dst index during various magnetic storms.science china technological sciences.
MLA	Zhao Hong,et al."Influence of solar wind dynamic pressure on geomagnetic Dst index during various magnetic storms".science china technological sciences (2011).