Ionospheric Response to the Solar Eclipse of 21 August 2017 in Millstone Hill (42N) Observations

Larisa Petrovna Goncharenko, Philip J. Erickson, Shun Rong Zhang, Ivan Galkin, Anthea J. Coster, Olusegun F. Jonah

Research output: Contribution to journalArticle

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Abstract

This study examines the ionospheric changes associated with the solar eclipse of 21 August 2017. The effects associated with the passage of the eclipse shadow were observed more than 1,000 km away from the totality at midlatitudes using the Millstone Hill incoherent scatter radar and digisonde. There was a 30–40% decrease in electron density, a 100- to 220-K decrease in electron temperature, and a 50- to 140-K decrease in ion temperature. Surprisingly, the greatest decrease in electron density occurred above 200 km. The most unexpected effect was a large 20- to 40-m/s upward vertical drift observed in the topside ionosphere right after the local maximum obscuration. We suggest that this drift led to a posteclipse increase in the topside electron density.

Original languageEnglish
Pages (from-to)4601-4609
Number of pages9
JournalGeophysical Research Letters
Volume45
Issue number10
DOIs
Publication statusPublished - May 28 2018

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solar eclipses
solar eclipse
electron density
ionospherics
incoherent scatter radar
temperate regions
occultation
eclipses
ion temperature
ionospheres
ionosphere
temperature
radar
electron energy
electron
ion
effect

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Goncharenko, L. P., Erickson, P. J., Zhang, S. R., Galkin, I., Coster, A. J., & Jonah, O. F. (2018). Ionospheric Response to the Solar Eclipse of 21 August 2017 in Millstone Hill (42N) Observations. Geophysical Research Letters, 45(10), 4601-4609. https://doi.org/10.1029/2018GL077334

Ionospheric Response to the Solar Eclipse of 21 August 2017 in Millstone Hill (42N) Observations. / Goncharenko, Larisa Petrovna; Erickson, Philip J.; Zhang, Shun Rong; Galkin, Ivan; Coster, Anthea J.; Jonah, Olusegun F.

In: Geophysical Research Letters, Vol. 45, No. 10, 28.05.2018, p. 4601-4609.

Research output: Contribution to journalArticle

Goncharenko, LP, Erickson, PJ, Zhang, SR, Galkin, I, Coster, AJ & Jonah, OF 2018, 'Ionospheric Response to the Solar Eclipse of 21 August 2017 in Millstone Hill (42N) Observations', Geophysical Research Letters, vol. 45, no. 10, pp. 4601-4609. https://doi.org/10.1029/2018GL077334
Goncharenko, Larisa Petrovna ; Erickson, Philip J. ; Zhang, Shun Rong ; Galkin, Ivan ; Coster, Anthea J. ; Jonah, Olusegun F. / Ionospheric Response to the Solar Eclipse of 21 August 2017 in Millstone Hill (42N) Observations. In: Geophysical Research Letters. 2018 ; Vol. 45, No. 10. pp. 4601-4609.
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