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Solar wind controls on Mercury's magnetospheric cusp

文献类型：期刊论文

作者He, Maosheng1,2; Vogt, Joachim1; Heyner, Daniel3; Zhong, Jun4
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2017-06-01
卷号122期号:6页码:6150-6164
关键词Mercury cusp IMF heliocentric distance component reconnection MESSENGER
ISSN号2169-9380
DOI10.1002/2016JA023687
文献子类Article
英文摘要This study assesses the response of the cusp to solar wind changes comprehensively, using 2848 orbits of MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) observation. The assessment entails four steps: (1) propose and validate an approach to estimate the solar wind magnetic field (interplanetary magnetic field (IMF)) for MESSENGER's cusp transit; (2) define an index s measuring the intensity of the magnetic disturbance which significantly peaks within the cusp and serves as an indicator of the cusp activity level; (3) construct an empirical model of sigma as a function of IMF and Mercury's heliocentric distance r(sun), through linear regression; and (4) use the model to estimate and compare the polar distribution of the disturbance s under different conditions for a systematic comparison. The comparison illustrates that the disturbance peak over the cusp is strongest and widest extending in local time for negative IMF B-x and negative IMF B-z, and when Mercury is around the perihelion. Azimuthal shifts are associated with both IMF B-y and r(sun): the cusp moves toward dawn when IMF B-y or r(sun) decrease. These dependences are explained in terms of the IMF B-x-controlled dayside magnetospheric topology, the component reconnection model applied to IMF B-y and B-z, and the variability of solar wind ram pressure associated with heliocentric distance r(sun). The applicability of the component reconnection model on IMF B-y indicates that at Mercury reconnection occurs at lower shear angles than at Earth.
WOS关键词INTERPLANETARY MAGNETIC-FIELD ; POLAR CUSP ; MESSENGER OBSERVATIONS ; DAYSIDE MAGNETOPAUSE ; INNER HELIOSPHERE ; PROTON AURORA ; B-Y ; IMF ; PLASMA ; LOCATION
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000405534800019
出版者AMER GEOPHYSICAL UNION
资助机构Deutsche Forschungsgemeinschaft through grant DFG(HE6915/1-1) ; German Ministerium fur Wirtschaft und Energie ; German Zentrum fur Luft-und Raumfahrt(50 QW 1501) ; Deutsche Forschungsgemeinschaft through grant DFG(HE6915/1-1) ; German Ministerium fur Wirtschaft und Energie ; German Zentrum fur Luft-und Raumfahrt(50 QW 1501) ; Deutsche Forschungsgemeinschaft through grant DFG(HE6915/1-1) ; German Ministerium fur Wirtschaft und Energie ; German Zentrum fur Luft-und Raumfahrt(50 QW 1501) ; Deutsche Forschungsgemeinschaft through grant DFG(HE6915/1-1) ; German Ministerium fur Wirtschaft und Energie ; German Zentrum fur Luft-und Raumfahrt(50 QW 1501)
源URL[http://ir.iggcas.ac.cn/handle/132A11/42968]  
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He, Maosheng
作者单位1.Jacobs Univ Bremen, Dept Phys & Earth Sci, Bremen, Germany
2.Rostock Univ, Leibniz Inst Atmospher Phys, Kuhlungsborn, Germany
3.Inst Geophys & Extraterr Phys, Braunschweig, Germany
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 He, Maosheng,Vogt, Joachim,Heyner, Daniel,et al. Solar wind controls on Mercury's magnetospheric cusp[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2017,122(6):6150-6164.
APA He, Maosheng,Vogt, Joachim,Heyner, Daniel,&Zhong, Jun.(2017).Solar wind controls on Mercury's magnetospheric cusp.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,122(6),6150-6164.
MLA He, Maosheng,et al."Solar wind controls on Mercury's magnetospheric cusp".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 122.6(2017):6150-6164.

入库方式： OAI收割

来源：地质与地球物理研究所

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