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	Study on a forecasting method of the relativistic electron flux at geostationary orbit using geomagnetic pulsation data
	He Tian1,2; Liu Si-Qing1; Xue Bing-Sen3; Cheng Yong-Hong1; Gong Jian-Cun1
刊名	Chinese journal of geophysics-chinese edition
	2009-10-01
卷号	52期号:10页码:2419-2427
关键词	Geomagnetic storm Geosynchronous orbit Relativistic electron flux Geomagnetic pulsation
ISSN号	0001-5733
DOI	10.3969/j.issn.0001-5733.2009.10.001
通讯作者	He tian(hetian06@mails.gucas.ac.cn)
英文摘要	Relativistic electron fluxes measured at constant energy undergo large dropouts and enhancements during geomagnetic storms. as far as we know, there are two substantial preconditions for the relativistic electron flux enhancement in the outer radiation belt during geomagnetic storm: the first and the most important is that there must be enough low energy electron (on the order of tens to hundreds of kev), the so-called seed electron; second, kinds of waves which can contribute to the electron acceleration by wave-particle interaction are necessary. geomagnetic field data observed by memambetsu (l=1.57) observatory are used to extract pil-2 pulsations during geomagnetic storm. the relativistic electron data at geostationary orbit are from goes satellites observation. we investigate the relationship between pil-2 pulsation duration and relativistic electron flux during the recovery phase, and find that the relativistic electron flux increases with the pil-2 pulsation duration. the pc5 pulsation at geostationary orbit has the similar result, the duration and amplitude of pc5 pulsation can also impact the relativistic electron flux. due to this statistic analysis result, a model was developed to forecast the relativistic electron flux at geostationary orbit during the recover phase of the geomagnetic storms. the model uses the duration and amplitude of pil pulsation and pc5 pulsation as input. parameters in the model are set by optimizing prediction efficiency (pe) for 38 events during 2004.01 similar to 2006.1.2, and the optimized linear correlation coefficient and pe for these events are 0.82 and 0.67, which means this method is viable.
WOS关键词	RADIATION BELT ; ACCELERATION ; STORMS
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000271403300001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2403590
专题	中国科学院大学
通讯作者	He Tian
作者单位	1.Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.China Meteorol Adm, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	He Tian,Liu Si-Qing,Xue Bing-Sen,et al. Study on a forecasting method of the relativistic electron flux at geostationary orbit using geomagnetic pulsation data[J]. Chinese journal of geophysics-chinese edition,2009,52(10):2419-2427.
APA	He Tian,Liu Si-Qing,Xue Bing-Sen,Cheng Yong-Hong,&Gong Jian-Cun.(2009).Study on a forecasting method of the relativistic electron flux at geostationary orbit using geomagnetic pulsation data.Chinese journal of geophysics-chinese edition,52(10),2419-2427.
MLA	He Tian,et al."Study on a forecasting method of the relativistic electron flux at geostationary orbit using geomagnetic pulsation data".Chinese journal of geophysics-chinese edition 52.10(2009):2419-2427.

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