Two fundamentally different drivers of dipolarizations at Saturn

doi:10.1002/2017JA024060

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	Two fundamentally different drivers of dipolarizations at Saturn
	Yao, Z. H.1,2; Grodent, D.2; Ray, L. C.3; Rae, I. J.1; Coates, A. J.1; Pu, Z. Y.4; Lui, A. T.5; Radioti, A.2; Waite, J. H.6; Jones, G. H.1
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2017-04-01
卷号	122 期号:4 页码:4348-4356
ISSN号	2169-9380
DOI	10.1002/2017JA024060
文献子类	Article
英文摘要	Solar wind energy is transferred to planetary magnetospheres via magnetopause reconnection, driving magnetospheric dynamics. At giant planets like Saturn, rapid rotation and internal plasma sources from geologically active moons also drive magnetospheric dynamics. In both cases, magnetic energy is regularly released via magnetospheric current redistributions that usually result in a change of the global magnetic field topology (named substorm dipolarization at Earth). Besides this substorm dipolarization, the front boundary of the reconnection outflow can also lead to a strong but localized magnetic dipolarization, named a reconnection front. The enhancement of the north-south magnetic component is usually adopted as the indicator of magnetic dipolarization. However, this field increase alone cannot distinguish between the two fundamentally different mechanisms. Using measurements from Cassini, we present multiple cases whereby we identify the two distinct types of dipolarization at Saturn. A comparison between Earth and Saturn provides new insight to revealing the energy dissipation in planetary magnetospheres.
WOS关键词	SUBSTORM EXPANSION ONSET ; MAGNETIC-FIELD ; MESSENGER OBSERVATIONS ; ENERGY-CONVERSION ; FLUX BUNDLES ; MAGNETOTAIL ; FRONTS ; TAIL ; CLUSTER ; PLASMA
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000401340800032
资助机构	European Union ; European Union ; UK Science and Technology Facilities Council (STFC) at UCL/MSSL(ST/L005638/1) ; UK Science and Technology Facilities Council (STFC) at UCL/MSSL(ST/L005638/1) ; Belgian Fund for Scientific Research (FNRS) ; Belgian Fund for Scientific Research (FNRS) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; German Ministry for Economy and Technology and the German Center for Aviation and Space (DLR)(50 OC 0302) ; German Ministry for Economy and Technology and the German Center for Aviation and Space (DLR)(50 OC 0302) ; GIMNAST(AGS-1004736) ; GIMNAST(AGS-1004736) ; European Union ; European Union ; UK Science and Technology Facilities Council (STFC) at UCL/MSSL(ST/L005638/1) ; UK Science and Technology Facilities Council (STFC) at UCL/MSSL(ST/L005638/1) ; Belgian Fund for Scientific Research (FNRS) ; Belgian Fund for Scientific Research (FNRS) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; German Ministry for Economy and Technology and the German Center for Aviation and Space (DLR)(50 OC 0302) ; German Ministry for Economy and Technology and the German Center for Aviation and Space (DLR)(50 OC 0302) ; GIMNAST(AGS-1004736) ; GIMNAST(AGS-1004736) ; European Union ; European Union ; UK Science and Technology Facilities Council (STFC) at UCL/MSSL(ST/L005638/1) ; UK Science and Technology Facilities Council (STFC) at UCL/MSSL(ST/L005638/1) ; Belgian Fund for Scientific Research (FNRS) ; Belgian Fund for Scientific Research (FNRS) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; German Ministry for Economy and Technology and the German Center for Aviation and Space (DLR)(50 OC 0302) ; German Ministry for Economy and Technology and the German Center for Aviation and Space (DLR)(50 OC 0302) ; GIMNAST(AGS-1004736) ; GIMNAST(AGS-1004736) ; European Union ; European Union ; UK Science and Technology Facilities Council (STFC) at UCL/MSSL(ST/L005638/1) ; UK Science and Technology Facilities Council (STFC) at UCL/MSSL(ST/L005638/1) ; Belgian Fund for Scientific Research (FNRS) ; Belgian Fund for Scientific Research (FNRS) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; German Ministry for Economy and Technology and the German Center for Aviation and Space (DLR)(50 OC 0302) ; German Ministry for Economy and Technology and the German Center for Aviation and Space (DLR)(50 OC 0302) ; GIMNAST(AGS-1004736) ; GIMNAST(AGS-1004736)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/93369]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Yao, Z. H.
作者单位	1.UCL, Mullard Space Sci Lab, Dorking, Surrey, England 2.Univ Liege, STAR Inst, Lab Phys Atmospher & Planetaire, Liege, Belgium 3.Univ Lancaster, Dept Phys, Bailrigg, England 4.Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China 5.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA 6.Southwest Res Inst, San Antonio, TX USA 7.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yao, Z. H.,Grodent, D.,Ray, L. C.,et al. Two fundamentally different drivers of dipolarizations at Saturn[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2017,122(4):4348-4356.
APA	Yao, Z. H..,Grodent, D..,Ray, L. C..,Rae, I. J..,Coates, A. J..,...&Dunn, Andw. R..(2017).Two fundamentally different drivers of dipolarizations at Saturn.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,122(4),4348-4356.
MLA	Yao, Z. H.,et al."Two fundamentally different drivers of dipolarizations at Saturn".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 122.4(2017):4348-4356.