GPS phase scintillation at high latitudes during geomagnetic storms of 7-17 March 2012 - Part 2: Interhemispheric comparison

P. Prikryl, R. Ghoddousi-Fard, L. Spogli, C. N. Mitchell, G. Li, B. Ning, P. J. Cilliers, V. Sreeja, M. Aquino, M. Terkildsen, P. T. Jayachandran, Y. Jiao, Y. T. Morton, J. M. Ruohoniemi, E. G. Thomas, Y. Zhang, A. T. Weatherwax, L. Alfonsi, G. De Franceschi, V. Romano

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

During the ascending phase of solar cycle 24, a series of interplanetary coronal mass ejections (ICMEs) in the period 7-17 March 2012 caused geomagnetic storms that strongly affected high-latitude ionosphere in the Northern and Southern Hemisphere. GPS phase scintillation was observed at northern and southern high latitudes by arrays of GPS ionospheric scintillation and TEC monitors (GISTMs) and geodetic-quality GPS receivers sampling at 1 Hz. Mapped as a function of magnetic latitude and magnetic local time (MLT), the scintillation was observed in the ionospheric cusp, the tongue of ionization fragmented into patches, sun-aligned arcs in the polar cap, and nightside auroral oval and subauroral latitudes. Complementing a companion paper (Prikryl et al., 2015a) that focuses on the high-latitude ionospheric response to variable solar wind in the North American sector, interhemispheric comparison reveals commonalities as well as differences and asymmetries between the northern and southern high latitudes, as a consequence of the coupling between the solar wind and magnetosphere. The interhemispheric asymmetries are caused by the dawn-dusk component of the interplanetary magnetic field controlling the MLT of the cusp entry of the storm-enhanced density plasma into the polar cap and the orientation relative to the noon-midnight meridian of the tongue of ionization.

Original languageEnglish
Pages (from-to)657-670
Number of pages14
JournalAnnales Geophysicae
Volume33
Issue number6
Early online date2 Jun 2015
DOIs
Publication statusPublished - 2 Jun 2015

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geomagnetic storm
magnetic storms
polar regions
scintillation
GPS
ionospherics
tongue
polar caps
cusps
solar wind
asymmetry
commonality
ionization
noon
interplanetary magnetic fields
coronal mass ejection
Southern Hemisphere
Northern Hemisphere
solar cycles
entry

Keywords

  • Ionosphere (ionospheric disturbances; ionospheric irregularities; polar ionosphere)

Cite this

GPS phase scintillation at high latitudes during geomagnetic storms of 7-17 March 2012 - Part 2 : Interhemispheric comparison. / Prikryl, P.; Ghoddousi-Fard, R.; Spogli, L.; Mitchell, C. N.; Li, G.; Ning, B.; Cilliers, P. J.; Sreeja, V.; Aquino, M.; Terkildsen, M.; Jayachandran, P. T.; Jiao, Y.; Morton, Y. T.; Ruohoniemi, J. M.; Thomas, E. G.; Zhang, Y.; Weatherwax, A. T.; Alfonsi, L.; De Franceschi, G.; Romano, V.

In: Annales Geophysicae, Vol. 33, No. 6, 02.06.2015, p. 657-670.

Research output: Contribution to journalArticle

Prikryl, P, Ghoddousi-Fard, R, Spogli, L, Mitchell, CN, Li, G, Ning, B, Cilliers, PJ, Sreeja, V, Aquino, M, Terkildsen, M, Jayachandran, PT, Jiao, Y, Morton, YT, Ruohoniemi, JM, Thomas, EG, Zhang, Y, Weatherwax, AT, Alfonsi, L, De Franceschi, G & Romano, V 2015, 'GPS phase scintillation at high latitudes during geomagnetic storms of 7-17 March 2012 - Part 2: Interhemispheric comparison', Annales Geophysicae, vol. 33, no. 6, pp. 657-670. https://doi.org/10.5194/angeo-33-657-2015
Prikryl, P. ; Ghoddousi-Fard, R. ; Spogli, L. ; Mitchell, C. N. ; Li, G. ; Ning, B. ; Cilliers, P. J. ; Sreeja, V. ; Aquino, M. ; Terkildsen, M. ; Jayachandran, P. T. ; Jiao, Y. ; Morton, Y. T. ; Ruohoniemi, J. M. ; Thomas, E. G. ; Zhang, Y. ; Weatherwax, A. T. ; Alfonsi, L. ; De Franceschi, G. ; Romano, V. / GPS phase scintillation at high latitudes during geomagnetic storms of 7-17 March 2012 - Part 2 : Interhemispheric comparison. In: Annales Geophysicae. 2015 ; Vol. 33, No. 6. pp. 657-670.
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T1 - GPS phase scintillation at high latitudes during geomagnetic storms of 7-17 March 2012 - Part 2

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AU - Prikryl, P.

AU - Ghoddousi-Fard, R.

AU - Spogli, L.

AU - Mitchell, C. N.

AU - Li, G.

AU - Ning, B.

AU - Cilliers, P. J.

AU - Sreeja, V.

AU - Aquino, M.

AU - Terkildsen, M.

AU - Jayachandran, P. T.

AU - Jiao, Y.

AU - Morton, Y. T.

AU - Ruohoniemi, J. M.

AU - Thomas, E. G.

AU - Zhang, Y.

AU - Weatherwax, A. T.

AU - Alfonsi, L.

AU - De Franceschi, G.

AU - Romano, V.

PY - 2015/6/2

Y1 - 2015/6/2

N2 - During the ascending phase of solar cycle 24, a series of interplanetary coronal mass ejections (ICMEs) in the period 7-17 March 2012 caused geomagnetic storms that strongly affected high-latitude ionosphere in the Northern and Southern Hemisphere. GPS phase scintillation was observed at northern and southern high latitudes by arrays of GPS ionospheric scintillation and TEC monitors (GISTMs) and geodetic-quality GPS receivers sampling at 1 Hz. Mapped as a function of magnetic latitude and magnetic local time (MLT), the scintillation was observed in the ionospheric cusp, the tongue of ionization fragmented into patches, sun-aligned arcs in the polar cap, and nightside auroral oval and subauroral latitudes. Complementing a companion paper (Prikryl et al., 2015a) that focuses on the high-latitude ionospheric response to variable solar wind in the North American sector, interhemispheric comparison reveals commonalities as well as differences and asymmetries between the northern and southern high latitudes, as a consequence of the coupling between the solar wind and magnetosphere. The interhemispheric asymmetries are caused by the dawn-dusk component of the interplanetary magnetic field controlling the MLT of the cusp entry of the storm-enhanced density plasma into the polar cap and the orientation relative to the noon-midnight meridian of the tongue of ionization.

AB - During the ascending phase of solar cycle 24, a series of interplanetary coronal mass ejections (ICMEs) in the period 7-17 March 2012 caused geomagnetic storms that strongly affected high-latitude ionosphere in the Northern and Southern Hemisphere. GPS phase scintillation was observed at northern and southern high latitudes by arrays of GPS ionospheric scintillation and TEC monitors (GISTMs) and geodetic-quality GPS receivers sampling at 1 Hz. Mapped as a function of magnetic latitude and magnetic local time (MLT), the scintillation was observed in the ionospheric cusp, the tongue of ionization fragmented into patches, sun-aligned arcs in the polar cap, and nightside auroral oval and subauroral latitudes. Complementing a companion paper (Prikryl et al., 2015a) that focuses on the high-latitude ionospheric response to variable solar wind in the North American sector, interhemispheric comparison reveals commonalities as well as differences and asymmetries between the northern and southern high latitudes, as a consequence of the coupling between the solar wind and magnetosphere. The interhemispheric asymmetries are caused by the dawn-dusk component of the interplanetary magnetic field controlling the MLT of the cusp entry of the storm-enhanced density plasma into the polar cap and the orientation relative to the noon-midnight meridian of the tongue of ionization.

KW - Ionosphere (ionospheric disturbances; ionospheric irregularities; polar ionosphere)

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DO - 10.5194/angeo-33-657-2015

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EP - 670

JO - Annales Geophysicae

JF - Annales Geophysicae

SN - 0992-7689

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ER -