Journal ArticleDOI
Peculiar features of the low-latitude and midlatitude ionospheric response to the St. Patrick's Day geomagnetic storm of 17 March 2015
Chinmaya Nayak,Lung Chih Tsai,Shin-Yi Su,Ivan Galkin,Adrian Teck Keng Tan,Ed Nofri,Punyawi Jamjareegulgarn +6 more
TLDR
In this paper, the authors investigated the ionospheric effects of the geomagnetic storm that occurred during 17-19 March 2015 in the American and European sectors using available ground-based ionosonde and GPS TEC data.Abstract:
The current study aims at investigating and identifying the ionospheric effects of the geomagnetic storm that occurred during 17–19 March 2015. Incidentally, with SYM-H hitting a minimum of −232 nT, this was the strongest storm of the current solar cycle 24. The study investigates how the storm has affected the equatorial, low-latitude, and midlatitude ionosphere in the American and the European sectors using available ground-based ionosonde and GPS TEC (total electron content) data. The possible effects of prompt electric field penetration is observed in both sectors during the main phase of the storm. In the American sector, the coexistence of both positive and negative ionospheric storm phases are observed at low latitudes and midlatitudes to high latitudes, respectively. The positive storm phase is mainly due to the prompt penetration electric fields. The negative storm phase in the midlatitude region is a combined effect of disturbance dynamo electric fields, the equatorward shift of the midlatitude density trough, and the equatorward compression of the plasmapause in combination with chemical compositional changes. Strong negative ionospheric storm phase is observed in both ionosonde and TEC observations during the recovery phase which also shows a strong hemispherical asymmetry. Additionally, the variation of equatorial ionization anomaly as seen through the SWARM constellation plasma measurements across different longitudes has been discussed. We, also, take a look at the performance of the IRI Real-Time Assimilative Mapping during this storm as an ionospheric space weather tool.read more
Citations
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Penetration of high latitude electric fields effects tolow latitude during Sundial 1984
TL;DR: In this article, electric field penetration events were identified using F-region vertical-drift measurements obtained in the October 6-13, 1984 period by Jicamarcan incoherent-backscatter radar and corresponding h-prime F measurements from ionosondes at Fortaleza, Cachoeira Paulista, and Dakar.
Journal ArticleDOI
Was Magnetic Storm the Only Driver of the Long-Duration Enhancements of Daytime Total Electron Content in the Asian-Australian Sector Between 7 and 12 September 2017?
Jiuhou Lei,Fuqing Huang,Xuetao Chen,Jiahao Zhong,Dexin Ren,Wenbin Wang,Xinan Yue,Xiaoli Luan,Mingjiao Jia,Xiankang Dou,Lianhuan Hu,Baiqi Ning,Charles Owolabi,Jinsong Chen,Guozhu Li,Xianghui Xue +15 more
Journal ArticleDOI
Predictable and unpredictable ionospheric disturbances during St. Patrick's Day magnetic storms of 2013 and 2015 and on 8–9 March 2008
Alexei Dmitriev,Alexei Dmitriev,Alla Suvorova,Alla Suvorova,Maxim Klimenko,Vladimir V. Klimenko,Konstantin Ratovsky,R. A. Rakhmatulin,V. A. Parkhomov +8 more
Journal ArticleDOI
Global Ionospheric and Thermospheric Effects of the June 2015 Geomagnetic Disturbances : Multi-Instrumental Observations and Modeling
TL;DR: In this article, the authors investigate ionospheric/thermospheric behavior during the period from 21 to 23 June 2015, when three interplanetary shocks (IS) of different intensities arrived at Earth.
Journal ArticleDOI
Formation of ionospheric irregularities over Southeast Asia during the 2015 St. Patrick's Day storm
Luca Spogli,Claudio Cesaroni,D. Di Mauro,Michael Pezzopane,Lucilla Alfonsi,Elvira Musicò,Elvira Musicò,Gabriella Povero,Marco Pini,Fabio Dovis,Rodrigo Romero,Nicola Linty,Prayitno Abadi,Fitri Nuraeni,Asnawi Husin,Minh Le Huy,Tran Thi Lan,Valdir Gil Pillat,Nicolas Floury +18 more
TL;DR: In this article, the authors investigate the geospace response to the 2015 St. Patrick's Day storm leveraging on instruments spread over Southeast Asia (SEA), covering a wide longitudinal sector of the low-latitude ionosphere.
References
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