Articles | Volume 37, issue 3
https://doi.org/10.5194/angeo-37-381-2019
https://doi.org/10.5194/angeo-37-381-2019
Regular paper
 | 
05 Jun 2019
Regular paper |  | 05 Jun 2019

A new scenario applying traffic flow analogy to poleward expansion of auroras

Osuke Saka

Related authors

Are drivers of northern lights in the ionosphere?
Osuke Saka
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2023-32,https://doi.org/10.5194/angeo-2023-32, 2023
Manuscript not accepted for further review
Short summary
Parallel electric fields produced by ionospheric injection
Osuke Saka
Ann. Geophys., 41, 369–373, https://doi.org/10.5194/angeo-41-369-2023,https://doi.org/10.5194/angeo-41-369-2023, 2023
Short summary
Are drivers of northern lights in the ionosphere?
Osuke Saka
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2021-66,https://doi.org/10.5194/angeo-2021-66, 2021
Revised manuscript not accepted
Short summary
Ionospheric control of space weather
Osuke Saka
Ann. Geophys., 39, 455–460, https://doi.org/10.5194/angeo-39-455-2021,https://doi.org/10.5194/angeo-39-455-2021, 2021
Short summary
The increase in the curvature radius of geomagnetic field lines preceding a classical dipolarization
Osuke Saka
Ann. Geophys., 38, 467–479, https://doi.org/10.5194/angeo-38-467-2020,https://doi.org/10.5194/angeo-38-467-2020, 2020
Short summary

Related subject area

Subject: Magnetosphere & space plasma physics | Keywords: Auroral phenomena
Morphological evolution and spatial profile changes of poleward moving auroral forms
Anton Goertz, Noora Partamies, Daniel Whiter, and Lisa Baddeley
Ann. Geophys., 41, 115–128, https://doi.org/10.5194/angeo-41-115-2023,https://doi.org/10.5194/angeo-41-115-2023, 2023
Short summary
Surveying pulsating auroras
Eric Grono and Eric Donovan
Ann. Geophys., 38, 1–8, https://doi.org/10.5194/angeo-38-1-2020,https://doi.org/10.5194/angeo-38-1-2020, 2020
Short summary
Wavelet analysis of the magnetotail response to solar wind fluctuations during HILDCAA events
Adriane Marques de Souza Franco, Ezequiel Echer, and Mauricio José Alves Bolzan
Ann. Geophys., 37, 919–929, https://doi.org/10.5194/angeo-37-919-2019,https://doi.org/10.5194/angeo-37-919-2019, 2019
Short summary
Multiscale estimation of the field-aligned current density
Costel Bunescu, Joachim Vogt, Octav Marghitu, and Adrian Blagau
Ann. Geophys., 37, 347–373, https://doi.org/10.5194/angeo-37-347-2019,https://doi.org/10.5194/angeo-37-347-2019, 2019
Characteristics of the electrojet during intense magnetic disturbances
Liudmila I. Gromova, Matthias Förster, Yakov I. Feldstein, and Patricia Ritter
Ann. Geophys., 36, 1361–1391, https://doi.org/10.5194/angeo-36-1361-2018,https://doi.org/10.5194/angeo-36-1361-2018, 2018
Short summary

Cited articles

Akasofu, S.-I., Kimball, D. S., and Meng, C.-I.: Dynamics of the aurora-VII, Equatorward motions and the multiplicity of auroral arcs, J. Atmos. Terr. Phys., 28, 627–635, 1966. 
Chao, J. K., Kan, J. R., Lui, A. T. Y., and Akasofu, S.-I.: A model for thinning of the plasma sheet, Planet. Space Sci., 25, 703–710, 1977. 
Chen, F. F.: Introduction to plasma physics, Plenum Press, New York, 1974. 
Ergun, R. E., Andersson, L., Main, D., Su, Y.-J., Newman, D. L., Goldman, M. V., Carlson, C. W., McPhadden, J. P., and Mozer, F. S.: Parallel electric fields in the upward current region of the aurora: Numerical solutions, Phys. Plasmas, 9, 3695–3704, 2002. 
Download
Short summary
Flow channel extending in north–south directions is produced in the initial pulse of Pi2 pulsations associated with the field line dipolarization. Drifts in the ionosphere of the order of kilometers per second accumulated plasmas at the low-latitude end of the flow channel. The plasma compression in the ionosphere produced field-aligned currents, parallel electric fields, and auroral expansion. We called the compressive ionosphere a "dynamic ionosphere".