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Detailed Reference Information |
Slinker, S.P., Fedder, J.A. and Lyon, J.G. (1995). Plasmoid formation and evolution in a numerical simulation of a substorm. Geophysical Research Letters 22: doi: 10.1029/95GL00300. issn: 0094-8276. |
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Plasmoids are thought to occur as a consequence of the formation of a near-Earth neutral line during the evolution of a geomagnetic substorm. Using a 3D, global MHD simulation of the interaction of the Earth's magnetosphere with the solar wind, we initiate a substorm by a southward turning of the Interplanetary Magnetic Field (IMF) after a long period of steady northward field. A large plasmoid is formed and ejected. We show field line maps of its shape and relate its formation time to the progress of the substorm as indicated by the cross polar potential. Because of the large region of closed field in the magnetotail at the time of the substorm, this plasmoid is longer in axial dimension than is typically observed. We compare the simulation results with the type of satellite observations which have been used to argue for the existence of plasmoids or of traveling compression regions (TCRs) in the lobes or magnetosheath. The simulation predicts that plasmoid passage would result in a strong signal in the cross tail electric field. ¿American Geophysical Union 1995 |
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Abstract |
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Keywords
Magnetospheric Physics, Solar wind/magnetosphere interactions, Magnetospheric Physics, Storms and substorms, Magnetospheric Physics, Numerical modeling, Magnetospheric Physics, Magnetotail |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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