[1]周过海,蔡小辉,劳小青,等.超强台风“威马逊”的地闪活动及大气电场特征[J].气象研究与应用,2019,40(02):98-102,111.
　Zhou Guohai,Cai Xiaohui,Lao Xiaoqing,et al.The ground flashing activity and atmospheric electric field characteristics of the super typhoon Weimason[J].Journal of Meteorological Research and Application,2019,40(02):98-102,111.
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超强台风“威马逊”的地闪活动及大气电场特征()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第40卷
期数:
2019年02期
页码:
98-102,111
栏目:
大气监测与装备技术
出版日期:
2019-06-30

文章信息/Info

Title:
The ground flashing activity and atmospheric electric field characteristics of the super typhoon Weimason
作者:
周过海1;  蔡小辉2;  劳小青3;  余海3
1. 海南省海口市气象局, 海口 57100;
2. 海南省昌江县气象局, 海南 昌江 572700;
3. 海南省气象灾害防御技术中心, 海口 570203
Author(s):
Zhou Guohai1;  Cai Xiaohui2;  Lao Xiaoqing3;  Yu Hai3
1. Haikou Meteorological Service, Haikou 57100;
2. Changjiang County Meteorological Service, Changjiang Hainan 572700;
3. Hainan Meteorological Disaster Prevention Technology Center, Haikou 570203
关键词:
地闪活动; 地面电场; "威马逊"台风; 三极性电荷结构
Keywords:
ground flashover activity; ground electric feld; Wilmson; tripolar charge structure
分类号:
P444
摘要:
利用海南省气象局在海南岛内布设的地闪定位网、海口地区组网大气平均电场仪及雷达对超强台风“威马逊”过程的监测资料，分析了该过程在海南岛过境（2014年18日12时至19日12时）时陆地及附近海域的地闪活动的时空分布特征。闪电监测结果显示，18日18时起，发生的地闪数目开始增多，至18日22时达到顶峰，至19日8时以前仍保持较强的频数。地电主要发生在东方市境内及近海，最大密度值出现于洋面，达到了4.7次/km2（海面），陆地最大地闪密度为1.6次/km2。通过对地面电场的演变特征分析来看，嵌于台风外围雨带里的对流云具有三极性电荷结构特征，这与大部分常规夏季雷暴云具有一致性。
Abstract:
The temporal and spatial distribution characteristics of land and adjacent sea areas during the transit of the super typhoon Wimason in Hainan Island (from 12:00 on 18th to 12:00 on 19th, 2014) are analyzed based on the monitoring data of the geostrophic positioning network, the average electric feld meter in Haikou and the radar set up by the Hainan Provincial Meteorological Service. Lightning monitoring results show that the number of ground flashes began to increase from 6pm on the 18th, peaked at 10pm, and maintained a strong frequency until 8am on the 19th. Geoelectricity mainly occurred in Dongfang City and offshore waters. The maximum density appeared on the ocean surface, reaching 4.7 times/km2 (sea surface), and the maximum land flash density is 1.6 times/km2. According to the analysis of the evolution characteristics of the ground electric feld, the convective cloud embedded in the rainband around typhoon has the characteristics of tripolar charge structure, which is consistent with most conventional summer thunderstorm clouds.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-11-30。
基金项目:海南省自然科学基金项目（2017CXTD014）和海南省气象局技术提升项目（HNQXJS201612）
作者简介:周过海(1976-),男,海南儋州人,从事雷电防护工作。
更新日期/Last Update: 1900-01-01