Volume 25 Issue 6
Nov.  2005
Turn off MathJax
Article Contents
WU Mingliang, XU Jiyao. Time-Dependent Simulation of Electrical Field Configuration and Optical Emission of Sprite Halo[J]. Chinese Journal of Space Science, 2005, 25(6): 510-515. doi: 10.11728/cjss2005.06.510
Citation: WU Mingliang, XU Jiyao. Time-Dependent Simulation of Electrical Field Configuration and Optical Emission of Sprite Halo[J]. Chinese Journal of Space Science, 2005, 25(6): 510-515. doi: 10.11728/cjss2005.06.510

Time-Dependent Simulation of Electrical Field Configuration and Optical Emission of Sprite Halo

doi: 10.11728/cjss2005.06.510
  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2005-11-15
  • Using the two-dimensional, time-dependent quasi-electrostatic field (QEF) code, the configuration, time delay, duration and descending motion speed of quasi-static electric field caused by thunderstorm discharge was investigated, and the effects of atmospheric ionization and optical emission in mesosphere and low ionosphere caused by this QEF was also studied. Research show: the sprite halo initiates at 85 km and with a pancake-like shape, then the regions of breakdown and optical emission move downward at speed of 1.5 × 10^7m·s^-1, the regions of breakdown and optical emission gradually become an upward concave shape. Sprite halo lasts about 5.5 ms with a height range of 64-87km, and with a horizontal scale of 80 km. Moreover, simulation results indicate that appearance time of the maximum of optical emission occurs at the time of t = 2.1 ms, which is delayed to thunderstorm discharge. And the QEF does not monotonously decrease with the altitude increasing, it has complicated structure at symmetrical axes. In addition to, the QEF cause atmosphere breakdown ionization and lead to electron density increases (ionization coefficient 〉 attachment coefficeint) or decreases (attachment coefficient 〉 ionization coefficient). At altitude of 70 km, the increased electron density of Ne = 2.178 × l0^8 m^-3 is much bigger than the fair weather electron density of Ne = 6.329 × 10^5 m^-3.

     

  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article Views(1956) PDF Downloads(1513) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return