2016
DOI: 10.1002/2015ja021672
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Does a localized plasma disturbance in the ionosphere evolve to electrostatic equilibrium? Evidence to the contrary

Abstract: Electrostatic equilibrium must be achieved through electromagnetic evolution. From an initial state with nonzero neutral wind localized along the geomagnetic field, and with all other plasma and electromagnetic perturbations initially zero, evolution progresses from plasma velocity to electric field to magnetic field, where the last step can launch an Alfvén wave that transmits the electromagnetic disturbance along geomagnetic field lines. Without the Alfvén wave the disturbance does not map along geomagnetic … Show more

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Cited by 4 publications
(3 citation statements)
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“…See Mallinckrodt & Carlson (1978) for in-depth discussion. Keiling (2009) and Cosgrove (2016) noted that the transition from an Alfvén wave to a quasi-static structure under strong M-I coupling is not fully understood. Seemingly, the ambiguity extends to all levels of activity with implications for regional-(e.g., Lotko & Zhang, 2018) and global-scale energy deposition (this study).…”
Section: Accepted Articlementioning
confidence: 99%
“…See Mallinckrodt & Carlson (1978) for in-depth discussion. Keiling (2009) and Cosgrove (2016) noted that the transition from an Alfvén wave to a quasi-static structure under strong M-I coupling is not fully understood. Seemingly, the ambiguity extends to all levels of activity with implications for regional-(e.g., Lotko & Zhang, 2018) and global-scale energy deposition (this study).…”
Section: Accepted Articlementioning
confidence: 99%
“…( 2017 ); Keiling et al. ( 2019 ); Keiling ( 2021 )), which are sometimes referred as Alfven or Alfvenic waves, where the later terminology is meant to capture the distinction from the low‐frequency Alfven waves that are involved in setting up the steady‐state ionospheric conductance (e.g., Lysak and Dum ( 1983 ); Cosgrove ( 2016 ); Pakhotin et al. ( 2018 ); Pakhotin et al.…”
Section: Introductionmentioning
confidence: 99%
“…The second article (Pakhotin et al (2021)) analyzes what is know as Alfvenic Poynting flux using data from the SWARM satellites. Alfvenic Poynting flux refers to the Poynting flux in a certain category of observed events with wave-like signatures (e.g., Janhunen et al (2005); Hartinger et al (2015); Luhr et al (2015); Hatch et al (2017); Keiling et al (2019); Keiling (2021)), which are sometimes referred as Alfven or Alfvenic waves, where the later terminology is meant to capture the distinction from the low-frequency Alfven waves that are involved in setting up the steady-state ionospheric conductance (e.g., Lysak and Dum (1983); Cosgrove (2016); Pakhotin et al (2018); Pakhotin et al (2020); Keiling (2021)). Pakhotin et al (2021) identify Alfvenic events in SWARM data and process the Poynting flux in three different ranges of spatial scale, as part of an argument that there is significant energy in the Alfvenic component (compare with Hartinger et al (2015)).…”
mentioning
confidence: 99%