Luminosity characteristics of a Natural Cloud-to-ground Lightning
A cloud-to-ground(CG) lightning with 13 return strokes(RS) was observed by using a high-speed camera with a frame rate of 5,000 frames/s. The speed of stepped leader was of the order of 10 6 m/s. An attempted leader involved in the CG lightning discharge. The speed of the attempted leader was measured and appeared to decrease as it developed down toward the ground. The speed of a dart-stepped leader appeared to increase as it approached to the ground. The luminosity peaks of 25％ subsequent return strokes were larger than that of the first return stroke. It has been found that the cut-off time before one subsequent return stroke exhibit a consistent trend with the total luminosity of this subsequent return stroke and the continuing current (CC) followed, but there is no fixed proportionality between them.
Yijun Zhang Jun Li Weitao Lu Wansheng Dong Shaodong Chen
Laboratory of Lightning Physics and Protection, Chinese Academy of Meteorological Sciences, Beijing Laboratory of Lightning Physics and Protection, Chinese Academy of Meteorological Sciences, Beijing Laboratory of Lightning Physics and Protection, Chinese Academy of Meteorological Sciences,Beijing 1 Laboratory of Lightning Physics and Protection, Chinese Academy of Meteorological Sciences,Beijing 1
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）