GPS phase scintillation and proxy index at high latitudes during a moderate geomagnetic storm

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dc.contributorVirginia Techen
dc.contributor.authorPrikryl, P.en
dc.contributor.authorGhoddousi-Fard, R.en
dc.contributor.authorKunduri, B. S. R.en
dc.contributor.authorThomas, E. G.en
dc.contributor.authorCoster, A. J.en
dc.contributor.authorJayachandran, P. T.en
dc.contributor.authorSpanswick, E.en
dc.contributor.authorDanskin, D. W.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessed2014-06-09en
dc.date.accessioned2014-06-09T19:08:54Zen
dc.date.available2014-06-09T19:08:54Zen
dc.date.issued2013en
dc.description.abstractThe amplitude and phase scintillation indices are customarily obtained by specialised GPS Ionospheric Scintillation and TEC Monitors (GISTMs) from L1 signal recorded at the rate of 50 Hz. The scintillation indices S-4 and sigma(Phi) are stored in real time from an array of high-rate scintillation receivers of the Canadian High Arctic Ionospheric Network (CHAIN). Ionospheric phase scintillation was observed at high latitudes during a moderate geomagnetic storm (Dst = -61 nT) that was caused by a moderate solar wind plasma stream compounded with the impact of two coronal mass ejections. The most intense phase scintillation (sigma(Phi) similar to 1 rad) occurred in the cusp and the polar cap where it was co-located with a strong ionospheric convection, an extended tongue of ionisation and dense polar cap patches that were observed with ionosondes and HF radars. At sub-auroral latitudes, a sub-auroral polarisation stream that was observed by mid-latitude radars was associated with weak scintillation (defined arbitrarily as sigma(Phi) < 0.5 rad). In the auroral zone, moderate scintillation coincided with auroral breakups observed by an all-sky imager, a riometer and a magnetometer in Yellowknife. To overcome the limited geographic coverage by GISTMs other GNSS data sampled at 1 Hz can be used to obtain scintillation proxy indices. In this study, a phase scintillation proxy index (delta phase rate, DPR) is obtained from 1-Hz data from CHAIN and other GPS receivers. The 50-Hz and 1-Hz phase scintillation indices are correlated. The percentage occurrences of sigma(Phi) > 0.1 rad and DPR > 2mm s(-1), both mapped as a function of magnetic latitude and magnetic local time, are very similar.en
dc.description.sponsorshipCanada Foundation for Innovationen
dc.description.sponsorshipNew Brunswick Innovation Foundationen
dc.description.sponsorshipGeomagnetic Laboratory, Natural Resources Canadaen
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (NSERC)en
dc.description.sponsorshipCSAen
dc.description.sponsorshipNational Science Foundation AGS-0838219, AGS-0946900, ATM-0856093en
dc.description.sponsorshipMIT Haystacken
dc.description.sponsorshipVirginia Space Grant Consortiumen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationPrikryl, P., Ghoddousi-Fard, R., Kunduri, B. S. R., Thomas, E. G., Coster, A. J., Jayachandran, P. T., Spanswick, E., and Danskin, D. W.: GPS phase scintillation and proxy index at high latitudes during a moderate geomagnetic storm, Ann. Geophys., 31, 805-816, doi:10.5194/angeo-31-805-2013, 2013.en
dc.identifier.doihttps://doi.org/10.5194/angeo-31-805-2013en
dc.identifier.issn0992-7689en
dc.identifier.urihttp://hdl.handle.net/10919/48603en
dc.identifier.urlhttp://www.ann-geophys.net/31/805/2013/angeo-31-805-2013.htmlen
dc.language.isoenen
dc.publisherCopernicus Publicationsen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectIonosphereen
dc.subjectIonospheric irregularitiesen
dc.subjectMagnetospheric physicsen
dc.subjectStormsen
dc.subjectAnd substormsen
dc.subjectRadio scienceen
dc.subjectSpace and satellite communicationen
dc.subjectHF radar observationsen
dc.subjectIonospheric scintillationen
dc.subjectSolar minimumen
dc.subjectAuroralen
dc.subjectOvalen
dc.subjectConvectionen
dc.subjectNetworksen
dc.subjectClimatologyen
dc.subjectMorphologyen
dc.subjectSuperDARNen
dc.subjectDynamicsen
dc.subjectAstronomy & astrophysicsen
dc.subjectGeosciences, multidisciplinaryen
dc.subjectMeteorologyen
dc.subjectAtmospheric sciencesen
dc.titleGPS phase scintillation and proxy index at high latitudes during a moderate geomagnetic stormen
dc.title.serialAnnales Geophysicaeen
dc.typeArticleen
dc.type.dcmitypeTexten

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