The August 2011 URSI World Day campaign

Initial results

Thomas J. Immel, Guiping Liu, Scott L. England, Larisa Petrovna Goncharenko, Philip J. Erickson, Mykhaylo V. Lyashenko, Marco Milla, Jorge Chau, Harald U. Frey, Stephen B. Mende, Qihou Zhou, Anja Stromme, Larry J. Paxton

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

During a 10-day URSI World Day observational campaign beginning on August 1, 2011, an isolated, major geomagnetic storm occurred. On August 5, Kp reached values of 8- and Dst dropped to -113nT. The occurrence of this isolated storm in the middle of a 10-day URSI World Day campaign provides and unprecedented opportunity to observe the coupling of solar wind energy into the magnetosphere and to evaluate the varied effects that occur in the coupled magnetosphere-ionosphere-thermosphere system. Dramatic changes in the ionosphere are seen at every one of the active radar stations, extending from Greenland down to equatorial Peru in the American sector and at middle latitudes in Ukraine. Data from TIMED and THEMIS are shown to support initial interpretations of the observations, where we focus on processes in the middle latitude afternoon sector during main phase, and the formation of a dense equatorial ionosphere during storm recovery. The combined measurements strongly suggest that the changes in ionospheric conditions observed after the main storm phase can be attributed in large part to changes in the stormtime thermosphere. This is through the generation of disturbance dynamo winds and also global neutral composition changes that either reduce or enhance plasma densities in a manner that depends mainly upon latitude. Unlike larger storms with possibly more sustained forcing, this storm exhibits minimal effects of persistent meridional stormtime wind drag, and little penetration of solar wind electric potentials to low latitudes. It is, therefore, an outstanding example of an impulsive event that exhibits longer-term effects through modification of the background atmosphere.

元の言語英語
ページ(範囲)47-55
ページ数9
ジャーナルJournal of Atmospheric and Solar-Terrestrial Physics
134
DOI
出版物ステータス出版済み - 11 1 2015

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ionospheres
ionosphere
thermosphere
magnetospheres
solar wind
magnetosphere
sectors
Ukraine
long term effects
windpower utilization
Peru
Greenland
geomagnetic storm
magnetic storms
tropical regions
ionospherics
plasma density
drag
radar
disturbances

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science

これを引用

Immel, T. J., Liu, G., England, S. L., Goncharenko, L. P., Erickson, P. J., Lyashenko, M. V., ... Paxton, L. J. (2015). The August 2011 URSI World Day campaign: Initial results. Journal of Atmospheric and Solar-Terrestrial Physics, 134, 47-55. https://doi.org/10.1016/j.jastp.2015.09.005

The August 2011 URSI World Day campaign : Initial results. / Immel, Thomas J.; Liu, Guiping; England, Scott L.; Goncharenko, Larisa Petrovna; Erickson, Philip J.; Lyashenko, Mykhaylo V.; Milla, Marco; Chau, Jorge; Frey, Harald U.; Mende, Stephen B.; Zhou, Qihou; Stromme, Anja; Paxton, Larry J.

:: Journal of Atmospheric and Solar-Terrestrial Physics, 巻 134, 01.11.2015, p. 47-55.

研究成果: ジャーナルへの寄稿記事

Immel, TJ, Liu, G, England, SL, Goncharenko, LP, Erickson, PJ, Lyashenko, MV, Milla, M, Chau, J, Frey, HU, Mende, SB, Zhou, Q, Stromme, A & Paxton, LJ 2015, 'The August 2011 URSI World Day campaign: Initial results', Journal of Atmospheric and Solar-Terrestrial Physics, 巻. 134, pp. 47-55. https://doi.org/10.1016/j.jastp.2015.09.005
Immel TJ, Liu G, England SL, Goncharenko LP, Erickson PJ, Lyashenko MV その他. The August 2011 URSI World Day campaign: Initial results. Journal of Atmospheric and Solar-Terrestrial Physics. 2015 11 1;134:47-55. https://doi.org/10.1016/j.jastp.2015.09.005
Immel, Thomas J. ; Liu, Guiping ; England, Scott L. ; Goncharenko, Larisa Petrovna ; Erickson, Philip J. ; Lyashenko, Mykhaylo V. ; Milla, Marco ; Chau, Jorge ; Frey, Harald U. ; Mende, Stephen B. ; Zhou, Qihou ; Stromme, Anja ; Paxton, Larry J. / The August 2011 URSI World Day campaign : Initial results. :: Journal of Atmospheric and Solar-Terrestrial Physics. 2015 ; 巻 134. pp. 47-55.
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AU - Goncharenko, Larisa Petrovna

AU - Erickson, Philip J.

AU - Lyashenko, Mykhaylo V.

AU - Milla, Marco

AU - Chau, Jorge

AU - Frey, Harald U.

AU - Mende, Stephen B.

AU - Zhou, Qihou

AU - Stromme, Anja

AU - Paxton, Larry J.

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