Publication Abstracts

Andrews et al. 2016

Andrews, D.J., S. Barabash, N.J.T. Edberg, D.A. Gurnett, B.E.S. Hall, M. Holmström, M. Lester, D.D. Morgan, H.J. Opgenoorth, R. Ramstadt, B. Sanchez-Cano, M. Way, and O. Witasse, 2016: Plasma observations during the Mars atmospheric "plume" event of March-April 2012. J. Geophys. Res. Space Phys., 121, no. 4, 3139-3154, doi:10.1002/2015JA022023.

We present initial analyses and conclusions from plasma observations made during the reported "Mars plume event" of March-April 2012. During this period, multiple independent amateur observers detected a localized, high-altitude "plume" over the Martian dawn terminator, the cause of which remains to be explained. The estimated brightness of the plume exceeds that expected for auroral emissions, and its projected altitude greatly exceeds that at which clouds are expected to form. We report on in situ measurements of ionospheric plasma density and solar wind parameters throughout this interval made by Mars Express, obtained over the same surface region but at the opposing terminator. Measurements in the ionosphere at the corresponding location frequently show a disturbed structure, though this is not atypical for such regions with intense crustal magnetic fields. We tentatively conclude that the formation and/or transport of this plume to the altitudes where it was observed could be due in part to the result of a large interplanetary coronal mass ejection (ICME) encountering the Martian system. Interestingly, we note that the only similar plume detection in May 1997 may also have been associated with a large ICME impact at Mars.

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BibTeX Citation

  author={Andrews, D. J. and Barabash, S. and Edberg, N. J. T. and Gurnett, D. A. and Hall, B. E. S. and Holmström, M. and Lester, M. and Morgan, D. D. and Opgenoorth, H. J. and Ramstadt, R. and Sanchez-Cano, B. and Way, M. and Witasse, O.},
  title={Plasma observations during the Mars atmospheric "plume" event of March-April 2012},
  journal={J. Geophys. Res. Space Phys.},

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RIS Citation

ID  - an07100r
AU  - Andrews, D. J.
AU  - Barabash, S.
AU  - Edberg, N. J. T.
AU  - Gurnett, D. A.
AU  - Hall, B. E. S.
AU  - Holmström, M.
AU  - Lester, M.
AU  - Morgan, D. D.
AU  - Opgenoorth, H. J.
AU  - Ramstadt, R.
AU  - Sanchez-Cano, B.
AU  - Way, M.
AU  - Witasse, O.
PY  - 2016
TI  - Plasma observations during the Mars atmospheric "plume" event of March-April 2012
JA  - J. Geophys. Res. Space Phys.
VL  - 121
IS  - 4
SP  - 3139
EP  - 3154
DO  - 10.1002/2015JA022023
ER  -

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