DOI: 10.1029/2017JA024900
Scopus记录号: 2-s2.0-85050287445
论文题名: Multivariable Comprehensive Analysis of Two Great Geomagnetic Storms of 2015
作者: Kashcheyev A. ; Migoya-Orué Y. ; Amory-Mazaudier C. ; Fleury R. ; Nava B. ; Alazo-Cuartas K. ; Radicella S.M.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 6 起始页码: 5000
结束页码: 5018
语种: 英语
英文关键词: geomagnetic storm
; ionosphere
; multivariable analysis
; plasma bubble
英文摘要: During the year 2015 two great geomagnetic storms (Dst < −200 nT) occurred on 17 March and 22 June. These two geomagnetic storms have similarities. They occurred during the same decreasing phase of the sunspot cycle 24. The interplanetary and magnetospheric environments were calm before the beginning of the storms. Both events were due to Coronal Mass Ejections and High-Speed Solar Wind. Variations of the solar wind velocity and the Bz component of the interplanetary magnetic field were also similar. Two key features that are different for these storms are UT time of the beginning (04:45 UT for 17 March and 18:33 UT for 22 June) and season (equinox and solstice). The comparison of the impact of the storms on the Earth ionosphere and magnetosphere has been performed using diverse parameters including global ionospheric maps of vertical total electron content, data from individual Global Navigation Satellite System receivers, ionosondes, magnetometers, and instruments from different space missions. Visualizing global ionospheric map data as the difference of vertical total electron content between consecutive days allowed understanding better the effect of the storms as a function of time of the beginning of the storm and of the season. It is shown that the presence or absence of scintillations in Global Navigation Satellite System signals during these two storms in African longitude sector is clearly related to the local time at a given station at the beginning of the storm. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113759
Appears in Collections: 气候减缓与适应
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作者单位: The Abdus Salam International Centre for Theoretical Physics (ICTP) T/ICT4D, Trieste, Italy; Department of Radiophysics of Geospace, Institute of Radio Astronomy, National Academy of Sciences of Ukraine, Kharkiv, Ukraine; Sorbonne Universités, UPMC Univ. Paris 06, UMR 7648, Laboratoire de Physique des Plasmas, Paris, France; LAB-STICC, UMR6285 Institut Mines-Telecom, Brest, France
Recommended Citation:
Kashcheyev A.,Migoya-Orué Y.,Amory-Mazaudier C.,et al. Multivariable Comprehensive Analysis of Two Great Geomagnetic Storms of 2015[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(6)