GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents
Ionospheric irregularities cause rapid fluctuations of radio wave amplitude and phase that candegrade GPS positional accuracy and affect performance of radio communication and navigation systems. The ionosphere becomes particularly disturbed during geomagnetic storms caused by impacts of coronal mas...
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ftdtupubl:oai:pure.atira.dk:publications/2a5fabe9-c1e5-4471-a554-b19d5e6dff49 2023-05-15T15:12:13+02:00 GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents Prikryl, Paul Ghoddousi-Fard, Reza Connors, Martin Weygand, James M. Danskin, Donald W. Thayyil Jayachandran, P. G. Thomas, Evan Ruohoniem, Mike Durgonics, Tibor Oksavik, Kjellmar Zhang, Yongliang 2016 https://orbit.dtu.dk/en/publications/2a5fabe9-c1e5-4471-a554-b19d5e6dff49 eng eng info:eu-repo/semantics/restrictedAccess Prikryl , P , Ghoddousi-Fard , R , Connors , M , Weygand , J M , Danskin , D W , Thayyil Jayachandran , P , G. Thomas , E , Ruohoniem , M , Durgonics , T , Oksavik , K & Zhang , Y 2016 , ' GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents ' , Japan Geoscience Union Meeting 2016 , Chiba-city , Japan , 22/05/2016 - 26/05/2016 . conferenceObject 2016 ftdtupubl 2022-08-14T08:24:16Z Ionospheric irregularities cause rapid fluctuations of radio wave amplitude and phase that candegrade GPS positional accuracy and affect performance of radio communication and navigation systems. The ionosphere becomes particularly disturbed during geomagnetic storms caused by impacts of coronal mass ejections compounded by high-speed plasma streams from coronal holes. Geomagnetic storm of March 17, 2015 was the largest in the current solar cycle. The high-latitude ionosphere dynamics is studied using arrays of ground-based instruments including GPS receivers, HF radars, ionosondes, riometers and magnetometers. GPS phase scintillation index is computed for L1 signal sampled at the rate of 50 Hz by specialized GPS scintillation receivers of the Expanded Canadian High Arctic Ionospheric Network (ECHAIN). To further extend the geographic coverage, the phasescintillation proxy index is obtained from geodetic-quality GPS data sampled at 1 Hz. In the context of solar wind coupling to the magnetosphere-ionosphere system, it has been demonstrated that GPS phase scintillation is primarily enhanced in the cusp, tongue of ionization (TOI) broken into patches drawn into the polar cap from the dayside storm-enhanced plasma density (SED) and in the auroral oval during energetic particle precipitation events, substorms and pseudo-breakups in particular. In this paper we examine the relation to auroral electrojet currents observed by arrays of ground-based magnetometers and energetic particle precipitation observed by DMSP satellites. Equivalent ionospheric currents (EICs) are obtained from ground magnetometer data using the spherical elementary currents systems (SECS) technique developed by Amm and Viljanen (1999) that has been applied over the entire North American ground magnetometer network by Weygand et al.(2011). Conference Object Arctic Canadian High Arctic Ionospheric Network Technical University of Denmark: DTU Orbit Arctic |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
Ionospheric irregularities cause rapid fluctuations of radio wave amplitude and phase that candegrade GPS positional accuracy and affect performance of radio communication and navigation systems. The ionosphere becomes particularly disturbed during geomagnetic storms caused by impacts of coronal mass ejections compounded by high-speed plasma streams from coronal holes. Geomagnetic storm of March 17, 2015 was the largest in the current solar cycle. The high-latitude ionosphere dynamics is studied using arrays of ground-based instruments including GPS receivers, HF radars, ionosondes, riometers and magnetometers. GPS phase scintillation index is computed for L1 signal sampled at the rate of 50 Hz by specialized GPS scintillation receivers of the Expanded Canadian High Arctic Ionospheric Network (ECHAIN). To further extend the geographic coverage, the phasescintillation proxy index is obtained from geodetic-quality GPS data sampled at 1 Hz. In the context of solar wind coupling to the magnetosphere-ionosphere system, it has been demonstrated that GPS phase scintillation is primarily enhanced in the cusp, tongue of ionization (TOI) broken into patches drawn into the polar cap from the dayside storm-enhanced plasma density (SED) and in the auroral oval during energetic particle precipitation events, substorms and pseudo-breakups in particular. In this paper we examine the relation to auroral electrojet currents observed by arrays of ground-based magnetometers and energetic particle precipitation observed by DMSP satellites. Equivalent ionospheric currents (EICs) are obtained from ground magnetometer data using the spherical elementary currents systems (SECS) technique developed by Amm and Viljanen (1999) that has been applied over the entire North American ground magnetometer network by Weygand et al.(2011). |
format |
Conference Object |
author |
Prikryl, Paul Ghoddousi-Fard, Reza Connors, Martin Weygand, James M. Danskin, Donald W. Thayyil Jayachandran, P. G. Thomas, Evan Ruohoniem, Mike Durgonics, Tibor Oksavik, Kjellmar Zhang, Yongliang |
spellingShingle |
Prikryl, Paul Ghoddousi-Fard, Reza Connors, Martin Weygand, James M. Danskin, Donald W. Thayyil Jayachandran, P. G. Thomas, Evan Ruohoniem, Mike Durgonics, Tibor Oksavik, Kjellmar Zhang, Yongliang GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents |
author_facet |
Prikryl, Paul Ghoddousi-Fard, Reza Connors, Martin Weygand, James M. Danskin, Donald W. Thayyil Jayachandran, P. G. Thomas, Evan Ruohoniem, Mike Durgonics, Tibor Oksavik, Kjellmar Zhang, Yongliang |
author_sort |
Prikryl, Paul |
title |
GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents |
title_short |
GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents |
title_full |
GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents |
title_fullStr |
GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents |
title_full_unstemmed |
GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents |
title_sort |
gps phase scintillation during the geomagnetic storm of march 17, 2015: the relation to auroral electrojet currents |
publishDate |
2016 |
url |
https://orbit.dtu.dk/en/publications/2a5fabe9-c1e5-4471-a554-b19d5e6dff49 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Canadian High Arctic Ionospheric Network |
genre_facet |
Arctic Canadian High Arctic Ionospheric Network |
op_source |
Prikryl , P , Ghoddousi-Fard , R , Connors , M , Weygand , J M , Danskin , D W , Thayyil Jayachandran , P , G. Thomas , E , Ruohoniem , M , Durgonics , T , Oksavik , K & Zhang , Y 2016 , ' GPS phase scintillation during the geomagnetic storm of March 17, 2015: The relation to auroral electrojet currents ' , Japan Geoscience Union Meeting 2016 , Chiba-city , Japan , 22/05/2016 - 26/05/2016 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766342927915679744 |