The altitude profile of ionospheric currents and conductivities deduced from EISCAT observations

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概要

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• On the basis of updated EISCAT observations, the altitude profile of ionospheric currents and conductivities is examined. It is shown that the altitude distribution of the substorm westward electrojet changes quite dynamically, depending on the electrojet phases and also on local time. The altitude at which the current density and the Hall conductivity are maximized in morning hours is lower than that at midnight, indicating that energies of precipitating electrons are relatively high in the morning sector. The altitude distribution is also found to vary systematically in relation to the electrojet phases in the morning sector : the characteristic energies of precipitating electrons tend to increase during the electrojet recovery phase.

• 国立極地研究所の論文

著者

• NOZAWA Satonori

  Solar-Terrestrial Environment Laboratory, Nagoya University

• Nozawa Satonori

  Solar-terrestrial Environment Laboratory Nagoya University

• Brekke A

  Faculty Of Science University Of Tromso

• Brekke Asgeir

  The Auroral Observatory The University Of Tromso

• KAMIDE Yohsuke

  Solar-Terrestrial Environment Laboratory, Nagoya University

• Kamide Yohsuke

  Solar-terrestrial Environment Laboratory Nagoya University

• SATO Mariko

  Solar-Terrestrial Environment Laboratory, Nagoya University

• Sato Mariko

  Solar-terrestrial Environment Laboratory Nagoya University

• Brekke Asgeir

  Auroral Observatory, University of Tromso

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• A low-latitude aurora observed at Rikubetsu (L=1.6) during the magnetic storm of September 13,1993
• The altitude profile of ionospheric currents and conductivities deduced from EISCAT observations
• Daytime ionospheric absorption features in the polar cap associated with poleward drifting F-region plasma patches
• Studies of the E-Region Neutral Wing in the Auroral Ionosphere Using Two Long-Run Data
• Dayside neutral winds in the quiet E-region deduced from the EISCAT radar data (extended abstract)
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• Estimate of Global and Regional Distributions of Ionospheric Electrodynamic Quantities from EISCAT Radar and Ground Magnetometer Data
• Polar cap ionosphere and thermosphere during the solar minimum period : EISCAT Svalbard radar observations and GCM simulations

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