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Mass Loading the Earth's Dayside Magnetopause Boundary Layer and Its Effect on Magnetic Reconnection
Fuselier, S.A.1,2; Trattner, K.J.3; Petrinec, S.M.4; Denton, M.H.5; Toledo-Redondo, S.6; André, M.7; Aunai, N.8; Chappell, C.R.9; Glocer, A.10; Haaland, S.E.11,12; Hesse, M.12; Kistler, L.M.13; Lavraud, B.6; Li, W.14; Moore, T.E.10; Graham, D.7; Alm, L.7; Tenfjord, P.12; Dargent, J.15; Vines, S.K.16; Nykyri, K.17; Burch, J.L.1; Strangeway, R.J.18
Source PublicationGeophysical Research Letters
AbstractWhen the interplanetary magnetic field is northward for a period of time, O+ from the high-latitude ionosphere escapes along reconnected magnetic field lines into the dayside magnetopause boundary layer. Dual-lobe reconnection closes these field lines, which traps O+ and mass loads the boundary layer. This O+ is an additional source of magnetospheric plasma that interacts with magnetosheath plasma through magnetic reconnection. This mass loading and interaction is illustrated through analysis of a magnetopause crossing by the Magnetospheric Multiscale spacecraft. While in the O+-rich boundary layer, the interplanetary magnetic field turns southward. As the Magnetospheric Multiscale spacecraft cross the high-shear magnetopause, reconnection signatures are observed. While the reconnection rate is likely reduced by the mass loading, reconnection is not suppressed at the magnetopause. The high-latitude dayside ionosphere is therefore a source of magnetospheric ions that contributes often to transient reduction in the reconnection rate at the dayside magnetopause. ©2019. American Geophysical Union. All Rights Reserved.
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Affiliation1.Southwest Research Institute, San Antonio; TX, United States;
2.Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio; TX, United States;
3.Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder; CO, United States;
4.Lockheed Martin Advanced Technology Center, Palo Alto; CA, United States;
5.New Mexico Consortium, Los Alamos; NM, United States;
6.Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, CNRS, UPS, CNES, Toulouse, France;
7.Swedish Institute of Space Physics, Uppsala, Sweden;
8.Laboratoire de Physique des Plasmas, Paris, France;
9.Physics and Astronomy Department, Vanderbilt University, Nashville; TN, United States;
10.NASA Goddard Space Flight Center, Greenbelt; MD, United States;
11.Max-Planck Institute for Solar Systems Research, Göttingen, Germany;
12.Birkeland Center for Space Science, University of Bergen, Bergen, Norway;
13.Institute for the Study of Earth Oceans and Space, University of New Hampshire, Durham; NH, United States;
14.State Key Laboratory of Space Weather, National Space Science Center, Beijing, China;
15.Physics Department E. Fermi, University of Pisa, Pisa, Italy;
16.Applied Physics Laboratory, Johns Hopkins University, Laurel; MD, United States;
17.Center for Space and Atmospheric Research, Embry-Riddle Aeronautical University, Daytona Beach; FL, United States;
18.Earth and Space Sciences, University of California, Los Angeles; CA, United States
Recommended Citation
GB/T 7714
Fuselier, S.A.,Trattner, K.J.,Petrinec, S.M.,et al. Mass Loading the Earth's Dayside Magnetopause Boundary Layer and Its Effect on Magnetic Reconnection[J]. Geophysical Research Letters,2019.
APA Fuselier, S.A..,Trattner, K.J..,Petrinec, S.M..,Denton, M.H..,Toledo-Redondo, S..,...&Strangeway, R.J..(2019).Mass Loading the Earth's Dayside Magnetopause Boundary Layer and Its Effect on Magnetic Reconnection.Geophysical Research Letters.
MLA Fuselier, S.A.,et al."Mass Loading the Earth's Dayside Magnetopause Boundary Layer and Its Effect on Magnetic Reconnection".Geophysical Research Letters (2019).
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