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	Interplanetary shock characteristics and associated geosynchronous magnetic field variations estimated from sudden impulses observed on the ground
	Wang, C.1; Li, H.1,2; Richardson, J. D.3; Kan, J. R.4
刊名	Journal of geophysical research-space physics
	2010-09-22
卷号	115页码:10
ISSN号	0148-0227
DOI	10.1029/2009ja014833
通讯作者	Wang, c.(cw@spaceweather.ac.cn)
英文摘要	Interplanetary (ip) shocks disturb the magnetosphere-ionosphere system resulting in geosynchronous magnetic field changes and sudden impulses observed by ground-based magnetometers. we extend the implications of a previous statistical study and show that sudden impulses (sis) can be used to estimate some parameters at the l1 point and geosynchronous orbit, including the change of the square root of solar wind dynamic pressure across the shock and the associated geosynchronous magnetic field changes near the subsolar region. it should be pointed out that the relationship between magnetospheric field change and sis amplitude and the solar wind dynamic pressure is not a single valued one, but a statistical relationship is useful in cases when interplanetary data are not available. empirical formulae deduced from observations can be used to estimate certain ip shock characteristics and geosynchronous magnetic field changes from sudden impulse data observed on the ground, with the prediction efficiency as high as 90% and 86%, respectively. these estimates are useful for studying historic, pre-space era data or if the l1 and geosynchronous data are not available at some future time.
WOS关键词	STEADY-STATE RESPONSE ; LOW-LATITUDE STATIONS ; PRESSURE CHANGES ; STORM
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000282327100003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2410716
专题	中国科学院大学
通讯作者	Wang, C.
作者单位	1.Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China 3.MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA 4.Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99709 USA
推荐引用方式 GB/T 7714	Wang, C.,Li, H.,Richardson, J. D.,et al. Interplanetary shock characteristics and associated geosynchronous magnetic field variations estimated from sudden impulses observed on the ground[J]. Journal of geophysical research-space physics,2010,115:10.
APA	Wang, C.,Li, H.,Richardson, J. D.,&Kan, J. R..(2010).Interplanetary shock characteristics and associated geosynchronous magnetic field variations estimated from sudden impulses observed on the ground.Journal of geophysical research-space physics,115,10.
MLA	Wang, C.,et al."Interplanetary shock characteristics and associated geosynchronous magnetic field variations estimated from sudden impulses observed on the ground".Journal of geophysical research-space physics 115(2010):10.

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