Electrical characteristics of an isolated Tibetan thunderstorm
An isolated Tibetan thunderstorm, which passed overhead our multiple observation sites and exhibits a positive dominant electric field at the ground, has been studied. All the lightning occurred are intracloud discharges which neutralize positive charge at lower height and negative charge above. The ightning discharges are found to be initiated mainly at two heights: one is roughly 2 km and the other is 4km above the ground. These results strongly suggest that the initial dominant leader of an intracloud discharge could be either a negative leader or a positive leader depending on its initial height. The large microsecond scale pulses usually observed at the initial stage of an intracloud discharge appeared to be generated when a negative leader is propagating within a positive charge region.
D.Wang K.Minamitani N.Takagi T.Watanabe T. Yuan X.Qie Y. Zhang
Gifu University, Japan Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, China Chinese Academy of Meteorological Sciences, China
国际会议
第13届国际大气电学会议(The 13th International Conference on Atmospheric Electricity)
北京
英文
2007-08-13（万方平台首次上网日期，不代表论文的发表时间）