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A Multi-Instrument ...
A Multi-Instrument Study of a Dipolarization Event in the Inner Magnetosphere
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- Matsui, H. (author)
- Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA.
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- Torbert, R. B. (author)
- Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA.
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- Spence, H. E. (author)
- Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA.
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- Argall, M. R. (author)
- Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA.,Kyoto Univ, Grad Sch Sci, Kyoto, Japan.
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- Cohen, I. J. (author)
- Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA.
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- Cooper, M. B. (author)
- New Jersey Inst Technol, Ctr Solar Terr Res, Newark, NJ 07102 USA.
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- Ergun, R. E. (author)
- Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
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- Farrugia, C. J. (author)
- Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA.
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- Fennell, J. F. (author)
- Aerosp Corp, Space Sci Dept, El Segundo, CA 90245 USA.
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- Fuselier, S. A. (author)
- Southwest Res Inst, San Antonio, TX USA.;Univ Texas San Antonio, San Antonio, TX USA.
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- Gkioulidou, M. (author)
- Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA.
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- Khotyaintsev, Yu. V. (author)
- Swedish Inst Space Phys, Uppsala, Sweden.
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- Lindqvist, Per-Arne (author)
- KTH,Rymd- och plasmafysik
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- Matsuoka, A. (author)
- Kyoto Univ, Grad Sch Sci, Kyoto, Japan.
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- Russell, C. T. (author)
- Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA.
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- Shoji, M. (author)
- Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan.
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- Strangeway, R. J. (author)
- Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA.
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- Turner, D. L. (author)
- Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA.
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- Vaith, H. (author)
- Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA.
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- Wygant, J. R. (author)
- Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
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- Khotyaintsev, Yuri V. (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA Kyoto Univ, Grad Sch Sci, Kyoto, Japan. (creator_code:org_t)
- American Geophysical Union (AGU), 2021
- 2021
- English.
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In: Journal of Geophysical Research - Space Physics. - : American Geophysical Union (AGU). - 2169-9380 .- 2169-9402. ; 126:5
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- A dipolarization of the background magnetic field was observed during a conjunction of the Magnetospheric Multiscale (MMS) spacecraft and Van Allen Probe B on September 22, 2018. The spacecraft were located in the inner magnetosphere at L similar to 6-7 just before midnight magnetic local time (MLT). The radial separation between MMS and Probe B was similar to 1R(E). Gradual dipolarization or an increase of the northward component B-Z of the background field occurred on a timescale of minutes. Exploration of energization and Radiation in Geospace located 0.5 MLT eastward at a similar L shell also measured a gradual increase. The spatial scale was of the order of 1 R-E. On top of that, MMS and Probe B measured B-Z increases, and a decrease in one case, on a timescale of seconds, accompanied by large electric fields with amplitudes > several tens of mV/m. Spatial scale lengths were of the order of the ion inertial length and the ion gyroradius. The inertial term in the momentum equation and the Hall term in the generalized Ohm's law were sometimes non-negligible. These small-scale variations are discussed in terms of the ballooning/interchange instability and kinetic Alfven waves among others. It is inferred that physics of multiple scales was involved in the dynamics of this dipolarization event.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- dipolarization
- inner magnetosphere
- multiple scale dynamics
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Matsui, H.
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Torbert, R. B.
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Spence, H. E.
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Argall, M. R.
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Cohen, I. J.
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Cooper, M. B.
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Ergun, R. E.
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Farrugia, C. J.
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Fennell, J. F.
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Fuselier, S. A.
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Gkioulidou, M.
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Khotyaintsev, Yu ...
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Lindqvist, Per-A ...
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Matsuoka, A.
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Russell, C. T.
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Shoji, M.
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Strangeway, R. J ...
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Turner, D. L.
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Vaith, H.
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Wygant, J. R.
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Khotyaintsev, Yu ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Journal of Geoph ...
- By the university
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Royal Institute of Technology
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Uppsala University