西北师范大学学报（自然科学版）2018，Vol.54Issue(2)：36-42,7.DOI:10.16783/j.cnki.nwnuz.2018.02.007
闪电先导发展速度和发光特性的研究
The propagation speed and luminescence characteristics of lightning leaders
摘要
Abstract
The light intensity and 2-D propagation speed for leader channel of natural lightning are obtained by analyzing the optical data captured by a high-speed camera.For the leader channels of cloud-to-ground (CG)lightning and bidirectional leader(BI)lightning,the light intensities present apulse at the positions where the tip of leader arrived,and the tip passed,the pulse disappear and the light intensities of channel remain stable.As the stepped leaders approach the ground,the tip luminous intensities and two-dimension(2-D)propagation speed of the channels as a whole showed the tendencies of"increased","decreased"and"irregular"with time.Moreover,the luminous intensities of the tip or total channel increase when the branch occurred,while the propagation speed of stepped leader decreases in most cases.关键词
闪电/先导/发光强度/二维传播速度Key words
lightning/leader/light intensity/2-D propagation speed分类
天文与地球科学引用本文复制引用
袁萍,李琴琴,王雪娟,岑建勇..闪电先导发展速度和发光特性的研究[J].西北师范大学学报（自然科学版）,2018,54(2):36-42,7.基金项目
国家自然科学基金资助项目(11475139,11365019,11605108) （11475139,11365019,11605108）
