Articles | Volume 38, issue 4
https://doi.org/10.5194/angeo-38-845-2020
https://doi.org/10.5194/angeo-38-845-2020
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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Cited articles

Aikio, A., Lakkal, T., Kozlovsky, A., and Williams, P.: Electric fields and currents of stable drifting auroral arcs in the evening sector, J. Geophys. Res., 107, 1424, doi:10.1029/2001JA009172, 2002. a
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Blixt, E., Semeter, J., and Ivchenko, N.: Optical flow analysis of the aurora borealis, IEEE T. Geosci. Remote, 3, 159–163, 2006. a, b
Chisham, G., Lester, M., Milan, S., Freeman, M., Bristow, W., Grocott, A., Mcwilliams, K., Ruohoniemi, J., Yeoman, T., Dyson, P., Greenwald, R., Kikuchi, T., Pinnock, M., Rash, J., Sato, N., Sofko, G., Villain, J. P., and Walker, A.: A decade of the Super Dual Auroral Radar Network (SuperDARN): scientific achievements, new techniques and future directions, Surv. Geophys., 28, 33–109, https://doi.org/10.1007/s10712-007-9017-8, 2007. a
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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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