电波科学学报2017，Vol.32Issue(1)：96-102,7.DOI:10.13443/j.cjors.2016112101
云闪反冲流光过程的电磁场计算及其影响因素分析
Calculation and its affecting factors of intracloud lightning electromagnetic field during the recoil streamer process
摘要
Abstract
Aiming at the issue of electromagnetic radiation from the recoil streamer of intracloud lightning discharge, a three-dimensional model for lightning electromagnetic field calculation during the recoil streamer process is presented based on the dipole method.Effects of the observation azimuth angle, recoil streamer propagation speed, and tortuosity of channel on lightning electromagnetic field are analyzed.The results show that with the exception of on-ground electric field within the intermediate zone, the bigger the observation azimuth angle is, the smaller the on-ground electromagnetic field of the oblique channel will be.The larger the propagation speed of recoil streamer, the bigger the on-ground electromagnetic field and the narrower the pulse-width of them.The tortuosity of lightning channel can result in some fluctuation in the lightning electromagnetic field waveform.However, for the channel with random tortuosity along an oblique channel, the main trend of its on-ground electromagnetic field waveforms are basically consistent with that of the oblique channel.关键词
云闪电磁场/反冲流光/方位角/传播速度/弯曲通道Key words
intracloud lightning electromagnetic field/recoil streamer/azimuth angle/propagation speed/tortuous channel分类
天文与地球科学引用本文复制引用
万浩江,魏光辉,陈亚洲,王晓嘉..云闪反冲流光过程的电磁场计算及其影响因素分析[J].电波科学学报,2017,32(1):96-102,7.基金项目
国家自然科学基金(No.51377171) （No.51377171）
