Ionospheric Bow Waves and Perturbations Induced by the 21 August 2017 Solar Eclipse

Shun Rong Zhang, Philip J. Erickson, Larisa Petrovna Goncharenko, Anthea J. Coster, William Rideout, Juha Vierinen

研究成果: ジャーナルへの寄稿記事

21 引用 (Scopus)

抄録

During solar eclipses, the Moon's shadow causes a large reduction in atmospheric energy input, including not only the stratosphere but also the thermosphere and ionosphere. The eclipse shadow has a supersonic motion which is theoretically expected to generate atmospheric bow waves, similar to a fast-moving river boat, with waves starting in the lower atmosphere and propagating into the ionosphere. However, previous geographically limited observations have had difficulty detecting these weak waves within the natural background atmospheric variability, and the existence of eclipse-induced ionospheric waves and their evolution in a complex coupling system remain controversial. During the 21 August 2017 eclipse, high fidelity and wide coverage ionospheric observations provided for the first time an oversampled set of eclipse data, using a dense network of Global Navigation Satellite System receivers at ∼2,000 sites in North America. We show the first unambiguous evidence of ionospheric bow waves as electron content disturbances over central/eastern United States, with ∼1 h duration, 300–400 km wavelength and 280 m/s phase speed emanating from and tailing the totality region. We also identify large ionospheric perturbations moving at the supersonic speed of the maximum solar obscuration which are too fast to be associated with known gravity wave or large-scale traveling ionospheric disturbance processes. This study reveals complex interconnections between the Sun, Moon, and Earth's neutral atmosphere and ionosphere and demonstrates persistent coupling processes between different components of the Earth's atmosphere, a topic of significant community interest.

元の言語英語
ページ(範囲)12,067-12,073
ジャーナルGeophysical Research Letters
44
発行部数24
DOI
出版物ステータス出版済み - 12 28 2017

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bow waves
solar eclipses
solar eclipse
eclipses
ionospherics
perturbation
ionospheres
moon
ionosphere
Moon
supersonic speed
atmosphere
traveling ionospheric disturbances
neutral atmospheres
satellite navigation systems
lower atmosphere
Earth atmosphere
thermosphere
occultation
boats

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

これを引用

Zhang, S. R., Erickson, P. J., Goncharenko, L. P., Coster, A. J., Rideout, W., & Vierinen, J. (2017). Ionospheric Bow Waves and Perturbations Induced by the 21 August 2017 Solar Eclipse. Geophysical Research Letters, 44(24), 12,067-12,073. https://doi.org/10.1002/2017GL076054

Ionospheric Bow Waves and Perturbations Induced by the 21 August 2017 Solar Eclipse. / Zhang, Shun Rong; Erickson, Philip J.; Goncharenko, Larisa Petrovna; Coster, Anthea J.; Rideout, William; Vierinen, Juha.

:: Geophysical Research Letters, 巻 44, 番号 24, 28.12.2017, p. 12,067-12,073.

研究成果: ジャーナルへの寄稿記事

Zhang, SR, Erickson, PJ, Goncharenko, LP, Coster, AJ, Rideout, W & Vierinen, J 2017, 'Ionospheric Bow Waves and Perturbations Induced by the 21 August 2017 Solar Eclipse', Geophysical Research Letters, 巻. 44, 番号 24, pp. 12,067-12,073. https://doi.org/10.1002/2017GL076054
Zhang SR, Erickson PJ, Goncharenko LP, Coster AJ, Rideout W, Vierinen J. Ionospheric Bow Waves and Perturbations Induced by the 21 August 2017 Solar Eclipse. Geophysical Research Letters. 2017 12 28;44(24):12,067-12,073. https://doi.org/10.1002/2017GL076054
Zhang, Shun Rong ; Erickson, Philip J. ; Goncharenko, Larisa Petrovna ; Coster, Anthea J. ; Rideout, William ; Vierinen, Juha. / Ionospheric Bow Waves and Perturbations Induced by the 21 August 2017 Solar Eclipse. :: Geophysical Research Letters. 2017 ; 巻 44, 番号 24. pp. 12,067-12,073.
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