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Near-Earth substorm...
Near-Earth substorm onset - a coordinated study
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- Persson, M. A. L. (author)
- Swedish Institute of Space Physics, Uppsala
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OPGENOORTH, HJ (author)
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PULKKINEN, TI (author)
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ERIKSSON, AI (author)
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DOVNER, PO (author)
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REEVES, GD (author)
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BELIAN, RD (author)
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ANDRE, M (author)
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- Blomberg, Lars (author)
- KTH,Alfvénlaboratoriet,Rymd- och plasmafysik
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ERLANDSON, RE (author)
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BOEHM, MH (author)
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AIKIO, AT (author)
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HAGGSTROM, I (author)
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(creator_code:org_t)
- 1994
- 1994
- English.
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In: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 21:17, s. 1875-1878
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- We present simultaneous satellite and ground-based measurements of a substorm. Throughout the initial substorm expansion, southward drifting arcs are observed poleward of the expanding substorm aurora, indicating two independent systems of particle precipitation. Freja passes the brightening onset arc in the topside ionosphere near the moment of the substorm onset, observing an Alfven wave, field aligned current and oxygen ion outflow. The substorm onset occurs at low magnetospheric L-shells, near the poleward edge of the region of trapped particles. The location and time for the substorm injection are confirmed by geostationary spacecraft together with magnetometers, all-sky cameras and radar on the ground. We believe that the substorm onset may be triggered by modification of the oxygen content of the inner magnetosphere during the growth-phase caused by ionospheric ion outflow.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Persson, M. A. L ...
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OPGENOORTH, HJ
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PULKKINEN, TI
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ERIKSSON, AI
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DOVNER, PO
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REEVES, GD
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show more...
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BELIAN, RD
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ANDRE, M
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Blomberg, Lars
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ERLANDSON, RE
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BOEHM, MH
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AIKIO, AT
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HAGGSTROM, I
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show less...
- 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 ...
- Articles in the publication
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Geophysical Rese ...
- By the university
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Royal Institute of Technology