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 language | English |
|---|---|
| Pages (from-to) | 4601-4609 |
| Number of pages | 9 |
| Journal | Geophysical Research Letters |
| Volume | 45 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - May 28 2018 |
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All Science Journal Classification (ASJC) codes
- Geophysics
- Earth and Planetary Sciences(all)
Cite this
Ionospheric Response to the Solar Eclipse of 21 August 2017 in Millstone Hill (42N) Observations. / Goncharenko, Larisa P.; 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 journal › Article
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TY - JOUR
T1 - Ionospheric Response to the Solar Eclipse of 21 August 2017 in Millstone Hill (42N) Observations
AU - Goncharenko, Larisa P.
AU - Erickson, Philip J.
AU - Zhang, Shun Rong
AU - Galkin, Ivan
AU - Coster, Anthea J.
AU - Jonah, Olusegun F.
PY - 2018/5/28
Y1 - 2018/5/28
N2 - 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.
AB - 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.
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U2 - 10.1029/2018GL077334
DO - 10.1029/2018GL077334
M3 - Article
AN - SCOPUS:85047540451
VL - 45
SP - 4601
EP - 4609
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 10
ER -