Volume 43 Issue 3
Jul.  2023
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WU Kun, XU Jiyao, YUAN Wei. Evolution of Equatorial Plasma Bubbles Group Simultaneously Observed by Multi-instruments over China (in Chinese). Chinese Journal of Space Science, 2023, 43(3): 446-455 doi: 10.11728/cjss2023.03.2022-0030
Citation: WU Kun, XU Jiyao, YUAN Wei. Evolution of Equatorial Plasma Bubbles Group Simultaneously Observed by Multi-instruments over China (in Chinese). Chinese Journal of Space Science, 2023, 43(3): 446-455 doi: 10.11728/cjss2023.03.2022-0030

Evolution of Equatorial Plasma Bubbles Group Simultaneously Observed by Multi-instruments over China

doi: 10.11728/cjss2023.03.2022-0030 cstr: 32142.14.cjss2023.03.2022-0030
  • Received Date: 2022-06-24
  • Accepted Date: 2022-09-25
  • Rev Recd Date: 2022-12-05
  • Available Online: 2023-05-23
  • The Equatorial Plasma Bubbles (EPB) of 30 March 2014 were studied using airglow images of 630 nm emission from all-sky imager and observations of Viral Hemorrhagic Fever (VHF) radar over Hainan Fuke Station (19.5°N, 109.1°E) from the Chinese Meridian Project, digisonde over Hainan Sanya Station (18.4°N, 109.6°E), and data of the Communication/Navigation Outage Forecasting System (C/NOFS). In this case, the morphological features and evolution processes of these EPBs were analyzed and studied in detail. The results showed that there was a group of EPB over China during the night of 30 March 2014. The EPB group includes about nine EPB which were simultaneously observed by multi-instrument. These EPBs occurred after sunset, lasting after midnight. The lifetime of the EPBs is about eight hours (from 20:15 LT to 04:15 LT). These EPB moved from west to east during the night. The maximal scale of their longitudinal ranges is more than 1200 km. East-west ranges of the EPB group are more than 1400 km. Besides, two EPBs showed a merging process in the evolutionary process. Portion of b6 merged into the other EPB and then formed into one EPB. When these EPBs were observed by the all-sky imager, the corresponding range spread F and plume irregularities were also simultaneously observed by the digisonde and VHF radar, respectively. Meanwhile, observations from C/NOFS also showed plasma depletion over the same period. Evolutions of these EPBs were simultaneously observed by optical equipment (all-sky imager) and radio equipment (VHF radar and digisonde) of ground-based measurements, and C/NOFS satellite. The observation results show that evolution of these EPBs which is simultaneously observed by multi-instrument. These observation results and the study enrich research of ionospheric irregularity based on observations of multi-instrument.

     

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