globalchange  > 科学计划与规划
DOI: 10.1002/2016GL070677
论文题名:
Dipolarization in the inner magnetosphere during a geomagnetic storm on 7 October 2015
作者: Matsui H.; Erickson P.J.; Foster J.C.; Torbert R.B.; Argall M.R.; Anderson B.J.; Blake J.B.; Cohen I.J.; Ergun R.E.; Farrugia C.J.; Khotyaintsev Y.V.; Korth H.; Lindqvist P.-A.; Magnes W.; Marklund G.T.; Mauk B.H.; Paulson K.W.; Russell C.T.; Strangeway R.J.; Turner D.L.
刊名: Geophysical Research Letters
ISSN: 0094-8579
EISSN: 1944-8310
出版年: 2016
卷: 43, 期:18
起始页码: 9397
结束页码: 9405
语种: 英语
英文关键词: dipolarization ; geomagnetic storm ; inner magnetosphere ; magnetosphere-ionosphere coupling
Scopus关键词: Electric fields ; Geomagnetism ; Ionosphere ; Ionospheric measurement ; Radar ; Spacecraft ; Storms ; Dipolarization ; Field aligned currents ; Geomagnetic storm ; Incoherent scatter radar ; Inner magnetosphere ; Magnetic and electric fields ; Magnetosphere-ionosphere coupling ; Magnetospheric multi scale ; Magnetosphere
英文摘要: A dipolarization event was observed by the Magnetospheric Multiscale (MMS) spacecraft at L = 3.8 and 19.8 magnetic local time starting at ∼23:42:36 UT on 7 October 2015. The magnetic and electric fields showed initially coherent variations between the spacecraft. The sunward convection turned tailward after the dipolarization. The observation is interpreted in terms of the pressure balance or the momentum equation. This was followed by a region traversed where the fields were irregular. The scale length was of the order of the ion gyroradius, suggesting the kinetic nature of the fluctuations. Combination of the multi-instrument, multispacecraft data reveals a more detailed picture of the dipolarization event in the inner magnetosphere. Conjunction ionosphere-plasmasphere observations from DMSP, two-dimensional GPS total electron content, the Millstone Hill midlatitude incoherent scatter radar, and AMPERE measurements imply that MMS observations are located on the poleward edge of the ionospheric trough where Region 2 field-aligned currents flow. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988640811&doi=10.1002%2f2016GL070677&partnerID=40&md5=f7f55e0a4200161de8694052296086d0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9542
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Space Science Center, University of New Hampshire, Durham, NH, United States

Recommended Citation:
Matsui H.,Erickson P.J.,Foster J.C.,et al. Dipolarization in the inner magnetosphere during a geomagnetic storm on 7 October 2015[J]. Geophysical Research Letters,2016-01-01,43(18).
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