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Unique Combinations of Differently Shaped Equatorial Plasma Bubbles Occurring Within a Small Longitude Range
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  • Deepak Kumar Karan,
  • Richard W Eastes,
  • Carlos Martinis,
  • Robert Edward Daniell,
  • Stanley C. Solomon,
  • William E. McClintock
Deepak Kumar Karan
Laboratory for Atmospheric and Space Physics, University of Colorado

Corresponding Author:[email protected]

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Richard W Eastes
Laboratory for Atmospheric and Space Physics
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Carlos Martinis
Boston University
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Robert Edward Daniell
Ionospheric Physics Consulting
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Stanley C. Solomon
National Center for Atmospheric Research (UCAR)
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William E. McClintock
Laboratory for Atmospheric and Space Physics
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On 12 October 2020 and 26 December 2021, NASA’s Global-scale Observations of the Limb and Disk (GOLD) mission observed differently shaped EPBs simultaneously within ~10o longitude, near the subsatellite point and over the Atlantic, respectively which is unusual. On 12 October 2020, three EPBs with differing curvatures were observed in a ~12o longitude sector. The westside EPB was curved towards the east, in a C-shape. The middle was straight. The eastside EPB was curved westward, in a reversed C-shape. In the second case, 26 December 2021, in a smaller longitude range of ~6o adjacent C-shaped and reversed C-shaped EPBs were observed. EPBs’ zonal drift velocities at the magnetic equator and both EIA crests were compared. These occurrences of oppositely shaped EPBs simultaneously in a narrow longitude may indicate that small-scale longitudinal variations in the E-region density, electric field, neutral wind variations, or a combination of them were present.
23 May 2023Submitted to ESS Open Archive
25 May 2023Published in ESS Open Archive