globalchange  > 气候减缓与适应
DOI: 10.1002/2017JA025121
Scopus ID: 2-s2.0-85044538920
Large-Scale Survey of the Structure of the Dayside Magnetopause by MMS
Author: Paschmann G.; Haaland S.E.; Phan T.D.; Sonnerup B.U.Ö.; Burch J.L.; Torbert R.B.; Gershman D.J.; Dorelli J.C.; Giles B.L.; Pollock C.; Saito Y.; Lavraud B.; Russell C.T.; Strangeway R.J.; Baumjohann W.; Fuselier S.A.
Source Publication: Journal of Geophysical Research: Space Physics
ISSN: 21699380
Publishing Year: 2018
Volume: 123, Issue:3
pages begin: 2018
pages end: 2033
Language: 英语
Keyword: database ; magnetopause ; MMS
English Abstract: This paper describes the generation and initial utilization of a database containing 80 vector and scalar quantities, for a total of 8,670 magnetopause and magnetosheath current sheet crossings by MMS1, using plasma and magnetic field data from the Fast Plasma Investigation, Fluxgate Magnetometer, and Hot Plasma Composition Analyzer instruments, augmented by solar wind and interplanetary magnetic field data from CDAWeb. Based on a determination of the current sheet width, measured and calculated vector and scalar quantities are stored for the two sides of the current sheet and for selected times within the current sheet. The only manual operations were the classification of the current sheets according to the type of boundary, the character of the magnetic field transition, and the quality of the current sheet fit. To characterize the database, histograms of selected key quantities are presented. We then give the statistics for the duration, motion, and thicknesses of the magnetopause current sheet, using single-spacecraft techniques for the determination of the normal velocities, obtaining median results of 12.9 s, 38.5 km/s, and 705.4 km, respectively. When scaled to the ion inertial length, the median thickness became 12.6; there were no thicknesses less than one. Next, we apply the Walén relation to find crossings that are rotational discontinuities and thus may indicate ongoing magnetic reconnection. For crossings where the velocities in the outflow region exceed the velocity on the magnetosheath side by at least 250 km/s, 47% meet our rotational discontinuity criteria. If we require the outflow to exceed 250 km/s along the L direction, then the percentage rises to 68%. ©2018. American Geophysical Union. All Rights Reserved.
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被引频次[WOS]:10   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Appears in Collections:气候减缓与适应

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Affiliation: Max-Planck-Institut für extraterrestrische Physik, Garching, Germany; Birkeland Centre for Space Science, University of Bergen, Bergen, Norway; Max-Planck-Institut für Sonnensystemforschung, Göttingen, Germany; Space Sciences Laboratory, University of California, Berkeley, Berkeley, CA, United States; Thayer School of Engineering, Dartmouth College, Hanover, NH, United States; Southwest Research Institute, San Antonio, TX, United States; Space Science Center, University of New Hampshire, Durham, NH, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Astronomy, University of Maryland, College Park, MD, United States; Denali Scientific, Healy, AK, United States; Institute for Space and Astronautical Sciences, Sagamihara, Japan; Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, CNRS, CNES, Toulouse, France; Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA, United States; Space Research Institute, Austrian Academy of Sciences, Graz, Austria; Department of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, TX, United States

Recommended Citation:
Paschmann G.,Haaland S.E.,Phan T.D.,et al. Large-Scale Survey of the Structure of the Dayside Magnetopause by MMS[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(3)
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