TitleModeling the Impact of Metallic Ion Layers on Equatorial Spread With SAMI3/ESF
Publication TypeJournal Article
Year of Publication2020
AuthorsHuba, JD, Krall, J, Drob, D
JournalGeophysical Research Letters
Volume47
Issue5
Date Published02/2020
ISSN0094-8276
KeywordsEquatorial ionosphere; Equatorial Spread F; metal ions; sporadic E
Abstract

The impact of region metal ion layers on the development of equatorial plasma bubbles is investigated using the SAMI3/ESF model. We find that metal ion layers reduce the growth rate of the generalized Rayleigh‐Taylor instability (GRTI) and act to suppress the development of equatorial plasma bubbles. This is consistent with theoretical expectations and observations and is attributed to the increase in both the Pedersen and Hall conductances. Additionally, inhomogeneities in the region metal ion layer can map into the layer and alter the morphology of equatorial spread (ESF) bubble evolution. Lastly, we find that if EFS bubbles develop in the presence of a metal ion layer, then the electric fields generated by the instability can lift the metal ions into the region. This is consistent with observations of Fe in the region during equatorial spread .

URLhttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2020GL087224
DOI10.1029/2020GL087224
Short TitleGeophys. Res. Lett.


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