Initiation of positive streamer corona in low thundercloud fields

被引：11

作者：

Cai, Qiheng ^{[1
]}

Jansky, Jaroslav ^{[1
]}

Pasko, Victor P. ^{[1
]}

机构：

[1] Penn State Univ, Dept Elect Engn, Sch Elect Engn Comp Sci, CSSL Lab, University Pk, PA 16802 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2017年 / 44卷 / 11期

基金：

美国国家科学基金会;

关键词：

Lightning Initiation; Avalanche-to-streamer Transition; LIGHTNING INITIATION; ELECTRIC-FIELD; DISCHARGE; PRECIPITATION; AIR; THUNDERSTORM; BREAKDOWN; RAINDROPS; PRESSURE; FLASHES;

D O I：

10.1002/2017GL073107

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Formation of filamentary gas discharge forms, commonly referred to as streamers, is one of the conditions required for initiation and subsequent propagation of lightning leaders. It is quantitatively demonstrated that streamers can be initiated under thunderstorm conditions when two precipitation particles cause an enhancement of the electric field by passing in close vicinity of each other. Conditions for avalanche-to-streamer transition are documented using a model of two spherical hydrometeor particles placed in uniform ambient field. The results are presented in scaled form using similarity relations for gas discharges and can be applied for a wide range of thunderstorm conditions, including different air pressures, electric fields, and particle dimensions.

引用

页码：5758 / 5765

页数：8

共 43 条

[1] The effect of a corona discharge on a lightning attachment [J].