The research on characteristic of short time duration intracloud discharge of Qinghai-Tibet Plateau

Author

Li Yajun ; Zhang Guangshu ; Wang Yanhui ; Zhang Tong ; Liu Yanxiu

Author_Institution

Lab. of Land Surface Process & Climate Change in Cold & Arid Regions, Cold & Arid Regions Environ. & Eng. Res. Inst. (CAREERI), Lanzhou, China

fYear

2014

fDate

11-18 Oct. 2014

Firstpage

805

Lastpage

807

Abstract

A kind of short duration intracloud flash in the Qinghai-Tibet Plateau was researched. It mainly occurred when the charge structure changed. The characteristics of this kind lightning flashes are following. The duration time is less than 100ms and majority is from 30ms to 50ms. The transfer distance is from 1km to 3km. The initial radiation events propagated horizontally with speed of 6-8.5×10⁴m/s, and then build a new discharge channel near the lightning starting point with speed of 1×10⁵m/s or produce multiple branched channels. The sequence of unipolar pulse constitutes the electric field waveform.

Keywords

clouds; lightning; Qinghai-Tibet plateau; charge structure; discharge channel; distance 1 km to 3 km; electric field waveform; initial radiation events; lightning flashes; multiple branched channels; short duration intracloud flash; short time duration intracloud discharge; time 30 ms to 50 ms; unipolar pulse sequence; Instruments; Lightning; Three-dimensional displays; intracloud flash; lightning discharge; short duration;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (ICLP), 2014 International Conference o

Conference_Location

Shanghai

Type

conf

DOI

10.1109/ICLP.2014.6973233

Filename

6973233