Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 38, issue 4
Articles | Volume 38, issue 4
https://doi.org/10.5194/angeo-38-845-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/angeo-38-845-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 38, issue 4
Regular paper
 | 
14 Jul 2020
Regular paper |  | 14 Jul 2020

Horizontal electric fields from flow of auroral O+(2P) ions at sub-second temporal resolution

Sam Tuttle, Betty Lanchester, Björn Gustavsson, Daniel Whiter, Nickolay Ivchenko, Robert Fear, and Mark Lester

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Short summary
Electric fields in the atmosphere near dynamic aurora are important in the physics of the electric circuit within the Earth's magnetic field. Oxygen ions emit light as they move under the influence of these electric fields; the flow of this emission is used to find the electric field at high temporal resolution. The solution needs two other simultaneous measurements of auroral emissions to give key parameters such as the auroral energy. The electric fields increase with brightness of the aurora.
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Special Issue on the joint 19th International EISCAT Symposium...