Low Latitude Ionospheric TEC Oscillations Associated With Periodic Changes in IMF Bz Polarity
Abstract An Ionospheric Observation Network for Irregularity and Scintillation in East/Southeast Asia was recently deployed. Using ionospheric total electron content (TEC) from the two crossed Beidou geostationary satellite receiver chains of the network along 110°E and 23°N and Doppler velocity mea...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-08-01
|
| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2019GL084428 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849715448153636864 |
|---|---|
| author | Guozhu Li Baiqi Ning Xiukuan Zhao Wenjie Sun Lianhuan Hu Haiyong Xie Kangkang Liu K. K. Ajith |
| author_facet | Guozhu Li Baiqi Ning Xiukuan Zhao Wenjie Sun Lianhuan Hu Haiyong Xie Kangkang Liu K. K. Ajith |
| author_sort | Guozhu Li |
| collection | DOAJ |
| description | Abstract An Ionospheric Observation Network for Irregularity and Scintillation in East/Southeast Asia was recently deployed. Using ionospheric total electron content (TEC) from the two crossed Beidou geostationary satellite receiver chains of the network along 110°E and 23°N and Doppler velocity measurements from the Sanya (18.3°N, 109.6°E) portable digital ionosonde, we report first observations of low latitude TEC oscillations synchronized over a wide longitude range in East/Southeast Asia, which occur at nighttime, after the main phase of the geomagnetic storm on 20 April 2018. A comparison among TEC and Doppler velocity and interplanetary magnetic field (IMF) Bz component shows that the periodic TEC enhancements correlate with F region downward plasma drifts and IMF Bz southward turnings. The results suggest that the quasiperiodic southward turnings of IMF Bz could produce multiple short‐lived westward prompt penetration electric fields, which contribute to driving the nighttime low latitude TEC oscillations simultaneously over the wide longitude range. |
| format | Article |
| id | doaj-art-b43b0aaf692847aaa29d5813c91f2dd8 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2019-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-b43b0aaf692847aaa29d5813c91f2dd82025-08-20T03:13:22ZengWileyGeophysical Research Letters0094-82761944-80072019-08-0146169379938710.1029/2019GL084428Low Latitude Ionospheric TEC Oscillations Associated With Periodic Changes in IMF Bz PolarityGuozhu Li0Baiqi Ning1Xiukuan Zhao2Wenjie Sun3Lianhuan Hu4Haiyong Xie5Kangkang Liu6K. K. Ajith7Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaBeijing National Observatory of Space Environment, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaKey Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaAbstract An Ionospheric Observation Network for Irregularity and Scintillation in East/Southeast Asia was recently deployed. Using ionospheric total electron content (TEC) from the two crossed Beidou geostationary satellite receiver chains of the network along 110°E and 23°N and Doppler velocity measurements from the Sanya (18.3°N, 109.6°E) portable digital ionosonde, we report first observations of low latitude TEC oscillations synchronized over a wide longitude range in East/Southeast Asia, which occur at nighttime, after the main phase of the geomagnetic storm on 20 April 2018. A comparison among TEC and Doppler velocity and interplanetary magnetic field (IMF) Bz component shows that the periodic TEC enhancements correlate with F region downward plasma drifts and IMF Bz southward turnings. The results suggest that the quasiperiodic southward turnings of IMF Bz could produce multiple short‐lived westward prompt penetration electric fields, which contribute to driving the nighttime low latitude TEC oscillations simultaneously over the wide longitude range.https://doi.org/10.1029/2019GL084428low latitude ionosphereTEC oscillationgeomagnetic stormplasma refilling |
| spellingShingle | Guozhu Li Baiqi Ning Xiukuan Zhao Wenjie Sun Lianhuan Hu Haiyong Xie Kangkang Liu K. K. Ajith Low Latitude Ionospheric TEC Oscillations Associated With Periodic Changes in IMF Bz Polarity Geophysical Research Letters low latitude ionosphere TEC oscillation geomagnetic storm plasma refilling |
| title | Low Latitude Ionospheric TEC Oscillations Associated With Periodic Changes in IMF Bz Polarity |
| title_full | Low Latitude Ionospheric TEC Oscillations Associated With Periodic Changes in IMF Bz Polarity |
| title_fullStr | Low Latitude Ionospheric TEC Oscillations Associated With Periodic Changes in IMF Bz Polarity |
| title_full_unstemmed | Low Latitude Ionospheric TEC Oscillations Associated With Periodic Changes in IMF Bz Polarity |
| title_short | Low Latitude Ionospheric TEC Oscillations Associated With Periodic Changes in IMF Bz Polarity |
| title_sort | low latitude ionospheric tec oscillations associated with periodic changes in imf bz polarity |
| topic | low latitude ionosphere TEC oscillation geomagnetic storm plasma refilling |
| url | https://doi.org/10.1029/2019GL084428 |
| work_keys_str_mv | AT guozhuli lowlatitudeionospherictecoscillationsassociatedwithperiodicchangesinimfbzpolarity AT baiqining lowlatitudeionospherictecoscillationsassociatedwithperiodicchangesinimfbzpolarity AT xiukuanzhao lowlatitudeionospherictecoscillationsassociatedwithperiodicchangesinimfbzpolarity AT wenjiesun lowlatitudeionospherictecoscillationsassociatedwithperiodicchangesinimfbzpolarity AT lianhuanhu lowlatitudeionospherictecoscillationsassociatedwithperiodicchangesinimfbzpolarity AT haiyongxie lowlatitudeionospherictecoscillationsassociatedwithperiodicchangesinimfbzpolarity AT kangkangliu lowlatitudeionospherictecoscillationsassociatedwithperiodicchangesinimfbzpolarity AT kkajith lowlatitudeionospherictecoscillationsassociatedwithperiodicchangesinimfbzpolarity |