globalchange  > 气候减缓与适应
DOI: 10.1002/2018JA025214
Scopus记录号: 2-s2.0-85044546591
论文题名:
Survey of Magnetosheath Plasma Properties at Saturn and Inference of Upstream Flow Conditions
作者: Thomsen M.F.; Coates A.J.; Jackman C.M.; Sergis N.; Jia X.; Hansen K.C.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期:3
起始页码: 2034
结束页码: 2053
语种: 英语
英文关键词: bow shock ; magnetosheath ; Saturn
英文摘要: A new Cassini magnetosheath data set is introduced that is based on a comprehensive survey of intervals in which the observed magnetosheath flow was encompassed within the plasma analyzer field of view and for which the computed numerical moments are therefore expected to be accurate. The data extend from 2004 day 299 to 2012 day 151 and comprise 19,155 416 s measurements. In addition to the plasma ion moments (density, temperature, and flow velocity), merged values of the plasma electron density and temperature, the energetic particle pressure, and the magnetic field vector are included in the data set. Statistical properties of various magnetosheath parameters, including dependence on local time, are presented. The magnetosheath field and flow are found to be only weakly aligned, primarily because of a relatively large z component of the magnetic field, attributable to the field being pulled out of the equatorial orientation by flows at higher latitudes. A new procedure for using magnetosheath properties to estimate the upstream solar wind speed is proposed and used to determine that the amount of electron heating at Saturn's high Mach-number bow shock is ~4% of the dissipated flow energy. The data set is available as supporting information to this paper. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114320
Appears in Collections:气候减缓与适应

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作者单位: Planetary Science Institute, Tucson, AZ, United States; Los Alamos National Laboratory, Los Alamos, NM, United States; Mullard Space Science Laboratory, University College London, Dorking, United Kingdom; Department of Physics and Astronomy, University of Southampton, Southampton, United Kingdom; Office of Space Research and Technology, Academy of Athens, Athens, Greece; Institute of Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Athens, Greece; Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, United States

Recommended Citation:
Thomsen M.F.,Coates A.J.,Jackman C.M.,et al. Survey of Magnetosheath Plasma Properties at Saturn and Inference of Upstream Flow Conditions[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(3)
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