气候变化领域集成服务门户(CCPortal): The Magnetic Structure of the Subsolar MPB Current Layer From MAVEN Observations: Implications for the Hall Electric Force

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DOI	10.1029/2020GL089230
	The Magnetic Structure of the Subsolar MPB Current Layer From MAVEN Observations: Implications for the Hall Electric Force
	Boscoboinik G.; Bertucci C.; Gomez D.; Morales L.; Mazelle C.; Halekas J.; Gruesbeck J.; Mitchell D.; Jakosky B.; Penou E.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	We report on the local structure of the Martian subsolar magnetic pileup boundary (MPB) from minimum variance analysis of the magnetic field measured by the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft for six orbits. In particular, we detect a well-defined current layer within the MPB and provide a local estimate of its current density which results in a sunward Hall electric force. This force accounts for the deflection of the solar wind ions and the acceleration of electrons which carry the interplanetary magnetic field through the MPB into the magnetic pileup region. We find that the thickness of the MPB current layer is of the order of both the upstream (magnetosheath) solar wind proton inertial length and convective gyroradius. This study provides a high-resolution view of one of the components of the current system around Mars reported in recent works. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Magnetic fields; Magnetic structure; Solar wind; High resolution; Interplanetary magnetic fields; Local structure; Magnetic pileup boundary; Mars atmosphere; Minimum variance analysis; Solar-wind ions; Volatile evolution; Orbits; electromagnetic field; geoelectric field; ion exchange; magnetosphere; Mars; solar wind; spacecraft
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169512
作者单位	IAFE, UBA CONICET, Buenos Aires, Argentina; Department of Physics, FCEyN, UBA, Buenos Aires, Argentina; INFIP, UBA CONICET, Buenos Aires, Argentina; IRAP, UPS CNRS CNES, Toulouse, France; Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States; GSFC, Greenbelt, MD, United States; SSL, University of California, Berkeley, CA, United States; LASP, University of Colorado Boulder, Boulder, CO, United States
推荐引用方式 GB/T 7714	Boscoboinik G.,Bertucci C.,Gomez D.,et al. The Magnetic Structure of the Subsolar MPB Current Layer From MAVEN Observations: Implications for the Hall Electric Force[J],2020,47(21).
APA	Boscoboinik G..,Bertucci C..,Gomez D..,Morales L..,Mazelle C..,...&Penou E..(2020).The Magnetic Structure of the Subsolar MPB Current Layer From MAVEN Observations: Implications for the Hall Electric Force.Geophysical Research Letters,47(21).
MLA	Boscoboinik G.,et al."The Magnetic Structure of the Subsolar MPB Current Layer From MAVEN Observations: Implications for the Hall Electric Force".Geophysical Research Letters 47.21(2020).