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Substorm Auroral Dynamics Reproduced by Advanced Global Magnetosphere−Ionosphere (M–I) Coupling Simulation
Takashi Tanaka
- pp 177-190
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The article was published on 2015-11-20. It has received 40 citations till now. The article focuses on the topics: Substorm & Coupling (physics).read more
Citations
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Journal ArticleDOI
Quiescent Discrete Auroral Arcs: A Review of Magnetospheric Generator Mechanisms
Joseph E. Borovsky,Joachim Birn,Marius Echim,Shigeru Fujita,Shigeru Fujita,Robert L. Lysak,David J. Knudsen,Octav Marghitu,Antonius Otto,Tomo-Hiko Watanabe,Takashi Tanaka +10 more
TL;DR: In this paper, the authors reviewed magnetospheric mechanisms for driving quiescent auroral arcs and predicted the driving of auroral-arc currents in large-scale computer simulations.
Journal ArticleDOI
Generation of field‐aligned current (FAC) and convection through the formation of pressure regimes: Correction for the concept of Dungey's convection
Takashi Tanaka,Masakazu Watanabe,M. Den,Shigeru Fujita,Yusuke Ebihara,Takashi Kikuchi,Kumiko K. Hashimoto,Ryuho Kataoka +7 more
TL;DR: In this paper, a comparison between the theoretical prediction and the state of numerical solution from the high-resolution global simulation was obtained about the distribution of dynamo, the magnetic field structure along the flow path that diverges Poynting flux, and energy conversion promoting the generation of electromagnetic energy.
Journal ArticleDOI
Substorm simulation: Formation of westward traveling surge
Yusuke Ebihara,Takashi Tanaka +1 more
TL;DR: In this paper, the authors proposed a scenario for the onset and subsequent formation of WTS, which is characterized by initial brightening of aurora, followed by a bulge expanding in all directions, and a westward traveling surge.
Journal ArticleDOI
Energy Flow Exciting Field-Aligned Current at Substorm Expansion Onset
Yusuke Ebihara,Takashi Tanaka +1 more
TL;DR: In this article, the authors present energy flow and energy conversion associated with the upward field-aligned currents (FACs) that manifest the onset of substorm expansion, and show that the cusp/mantle region transmits electromagnetic energy to almost the entire region of the magnetosphere when the interplanetary magnetic field is southward.
Journal ArticleDOI
Global simulation study for the time sequence of events leading to the substorm onset
Takashi Tanaka,Yusuke Ebihara,Masakazu Watanabe,Mitsue Den,Shigeru Fujita,Shigeru Fujita,Takashi Kikuchi,Kumiko K. Hashimoto,Ryuho Kataoka +8 more
TL;DR: In this paper, a global simulation code was developed to reproduce the precise features of the substorm onset in the ionosphere, which can reproduce the onset that starts from the equatorward side of the quiet arc, two step development of the onset, and the westward traveling surge (WTS) that starts two minutes after the initial brightening.
References
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Journal ArticleDOI
Neutral line model of substorms: Past results and present view
Daniel N. Baker,Tuija Pulkkinen,Vassilis Angelopoulos,Wolfgang Baumjohann,Robert L. McPherron +4 more
TL;DR: In this article, the authors reviewed the NENL model of magnetospheric substorms, including the role of coupling with the solar wind and interplanetary magnetic field, the growth phase sequence, the expansion phase (and onset), and the recovery phase.
Journal ArticleDOI
Current disruption in the Earth's magnetosphere: Observations and models
TL;DR: In this paper, the cross-tail current sheet shows a rapid growth in the current density, a large upsurge in the duskward ion bulk speed to nearly the ion thermal speed, an increase in the plasma pressure and its isotropy, a rise in the ion beta, and a decrease in the thickness of the current sheet to a length scale comparable to the thermal ion gyroradius.
Journal ArticleDOI
Observations of charged particle precipitation into the auroral zone
L. A. Frank,K. L. Ackerson +1 more
TL;DR: Electron and proton precipitation observations in auroral, polar cap and outer radiation zones by electrostatic analyzers on earth satellite Injun 5 were carried out by as mentioned in this paper, and the results showed that the auroral and polar cap regions were relatively stable.
Journal ArticleDOI
Finite volume TVD scheme on an unstructured grid system for three-dimensional MHD simulation of inhomogeneous systems including strong background potential fields
TL;DR: In this article, a 3D high-resolution MHD simulation scheme was developed for inhomogeneous systems, including strong background potential fields, based on the finite volume method (FVM) with an upwinding numerical flux by the linearized Riemann solver.
Journal ArticleDOI
The auroral luminosity structure in the high-latitude upper atmosphere: Its dynamics and relationship to the large-scale structure of the Earth's magnetosphere
Ya. I. Feldstein,Yu. I. Galperin +1 more
TL;DR: The concept of the auroral oval was proposed independently by Feldstein and by Khorosheva in the early 1960's, and it has since been widely used as a reference frame for the organization of high-latitude optical, particle, and ionospheric data as discussed by the authors.