Midlatitude Plasma Bubbles Over China and Adjacent Areas During a Magnetic Storm on 8 September 2017

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  • Ercha Aa
    National Space Science Center Chinese Academy of Sciences Beijing China
  • Wengeng Huang
    National Space Science Center Chinese Academy of Sciences Beijing China
  • Siqing Liu
    National Space Science Center Chinese Academy of Sciences Beijing China
  • Aaron Ridley
    Department of Climate and Space Sciences and Engineering University of Michigan Ann Arbor MI USA
  • Shasha Zou
    Department of Climate and Space Sciences and Engineering University of Michigan Ann Arbor MI USA
  • Liqin Shi
    National Space Science Center Chinese Academy of Sciences Beijing China
  • Yanhong Chen
    National Space Science Center Chinese Academy of Sciences Beijing China
  • Hua Shen
    National Space Science Center Chinese Academy of Sciences Beijing China
  • Tianjiao Yuan
    National Space Science Center Chinese Academy of Sciences Beijing China
  • Jianyong Li
    National Earthquake Infrastructure Service Beijing China
  • Tan Wang
    National Earthquake Infrastructure Service Beijing China

書誌事項

公開日
2018-03
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#am
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/2017sw001776
公開者
American Geophysical Union (AGU)

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説明

<jats:title>Abstract</jats:title><jats:p>This paper presents observations of postsunset super plasma bubbles over China and adjacent areas during the second main phase of a storm on 8 September 2017. The signatures of the plasma bubbles can be seen or deduced from (1) deep field‐aligned total electron content depletions embedded in regional ionospheric maps derived from dense Global Navigation Satellite System networks, (2) significant equatorial and midlatitudinal plasma bite‐outs in electron density measurements on board Swarm satellites, and (3) enhancements of ionosonde virtual height and scintillation in local evening associated with strong southward interplanetary magnetic field. The bubbles/depletions covered a broad area mainly within 20°–45°N and 80°–110°E with bifurcated structures and persisted for nearly 5 hr (∼13–18 UT). One prominent feature is that the bubbles extended remarkably along the magnetic field lines in the form of depleted flux tubes, reaching up to midlatitude of around 50°N (magnetic latitude: 45.5°N) that maps to an altitude of 6,600 km over the magnetic equator. The maximum upward drift speed of the bubbles over the magnetic equator was about 700 m/s and gradually decreased with altitude and time. The possible triggering mechanism of the plasma bubbles was estimated to be storm time eastward prompt penetration electric field, while the traveling ionospheric disturbance could play a role in facilitating the latitudinal extension of the depletions.</jats:p>

収録刊行物

  • Space Weather

    Space Weather 16 (3), 321-331, 2018-03

    American Geophysical Union (AGU)

被引用文献 (11)*注記

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