Electrical characteristics of thunderstorms in the Eastern part of India

被引:20
作者
Gopalakrishnan, V. [1 ]
Pawar, S. D. [1 ]
Murugavel, P. [1 ]
Johare, Kirankumar P. [1 ]
机构
[1] Indian Inst Trop Meteorol, Pune 411008, Maharashtra, India
关键词
Lightning; Electric field change; Thunderstorm; North-east India; LIGHTNING DISCHARGES; TIBETAN PLATEAU; CHARGE CENTER; FIELD; ELECTRIFICATION; PRECIPITATION; THUNDERCLOUD; RECOVERY;
D O I
10.1016/j.jastp.2011.04.022
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Measurements of surface electric field made during the Pilot experiment to STORM at Kharagpur, India have been analyzed. During period of observations, i.e., from April 15 to May 31 2006, 14, thunderstorms were observed. Some electrical characteristic features of lighting associated with these thunderstorms are presented here. The electric field pattern shows that large number of negative electric field changes occur during mature stage of thunderstorm indicating removal of negative charge from overhead. Based on the polarity of electric field changes induced by lightning and shape of recovery curves, it is concluded that the most of thunderstorms in this region have positive-dipole type charge structure. These thunderstorms generally exhibit End-Of-Storm-Oscillation (EOSO). (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1876 / 1882
页数:7
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