Randomly Stepped Model for Upward Electrical Discharge from Top of Thundercloud(Gases, Plasmas and Electric Discharges)
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概要
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The upward electrical discharges from the tops of thunderclouds are investigated by a numerical simulation method in this study. Based on a positive dipole (positive above negative charge) charge structure of thunderclouds, a randomly stepped model is developed to simulate the growth of upward electrical discharges. It is found that an upward electrical discharge is preferred when the distance between the positive and negative charges of a thundercloud is large. The simulation reveals a threedimensional (3D) overall feature of upward electrical discharges that are primarily terminated at an altitude below 40km, which is in agreement with observations of blue jets and blue starters.
- 一般社団法人日本物理学会の論文
- 2005-04-15
著者
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Tong Lizhu
Institute Of Fluid Science Tohoku University
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Fukunishi Hiroshi
Department Of Astrophysics And Geophysics Tohoku University
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Nanbu Kenichi
Institute For Fluid Science Tohoku University
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