%0 Journal Article
%T PRELIMINARY ANALYSIS OF CHARACTERISTICS OF LIGHTNING IN THE NAGQU AREA OF THE QINGHAI-XIZANG PLATEAU<br>青藏高原那曲地区雷电特征初步分析
%A ZHAO Yang ZHANG Yi Jun DONG Wan Sheng ZHANG Hong Fa CHEN Cheng Pin ZHANG Tong Cold
%A Arid Regions Environmental
%A Engineering Research Institute
%A Chinese Academy of Sciences
%A Lanzhou
%A China
%A <br>赵 阳
%A 张义军
%A 董万胜
%A 张鸿发
%A 陈成品
%A 张 彤
%J 地球物理学报
%D 2004
%I 
%X We analyzed the data of electric field and electric field changes produced by lightning on the ground in the Nagqu area of the Qinghai Xizang plateau in the summer of 2002. The results showed that the charge structure in thunderstorms was multiformity and complication. Little cloud to ground (CG) lightning flashes occurred in the thunderstorm. A long time discharge process in cloud occurred just before the step leader of positive and negative CG lightning. Most of CG lightning discharges only involved one return stroke. The proportion of positive CG lightning discharges was 33% and negative 67% in thunderstorms. It was obviously higher than that in lower and middle latitude area. A continuing current process with short lasting time occurred just after the return stroke.
%K Qinghai-Xizang plateau
%K Charge structure
%K Electric field change<br>青藏高原
%K 电荷结构
%K 电场变化
%K 那曲地区
%K 雷电
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=4293E1FEA1831B20&yid=D0E58B75BFD8E51C&vid=F4B561950EE1D31A&iid=38B194292C032A66&sid=EB58C3052341AAA3&eid=FED44C0135DC1D9C&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=20&reference_num=16