彭泽水产养殖基地雷电活动特征与风险评估  

Characteristics and risk assessment of lightning activity in Pengze aquaculture base

作　　者：江国振 马中元[2] 辜晓青[2] 

机构地区：[1]江西彭泽县气象局,彭泽332700 [2]江西省气象科学研究所,南昌330046

出　　处：《气象水文海洋仪器》2012年第3期124-128,共5页Meteorological,Hydrological and Marine Instruments

基　　金：公益性行业(气象)科研专项<水产养殖气象保障关键技术>(GYHY201006029)资助

摘　　要：采用统计方法对彭泽水产养殖基地2005～2010年的雷电数据进行分析。结果表明:彭泽水产养殖基地雷电活动比较频繁,年平均雷暴日为42.17d,5～9月平均落雷次数高于6000次,其中8月份最多,为11039次,主要集中在13:00～20:00,占总数的66.6%;年平均落雷密度Ng=4.217次/km2,雷电流幅值平均为12.3kA,雷电流幅值>98.9kA的地闪概率为1%,雷电流幅值>94.2kA的地闪概率为2%。根据雷电活动特征,给出养殖区雷电风险评估和雷电防御措施。Based on statistical method,lightning data of Pengze aquaculture base from 2005 to 2010 are analyzed. The results show that ：lightning activity in Pengze aquaculture base is more frequent, and the annual mean number of days with thunderstorms is 42.17 per a year. The average lightning numbers are more than 6 000 times from May to September with a maximum of 11 039 times in August,mainly focused at 13.00 to 20,00 accounting for 66.6% of the total. Average annual density of lightning is Ng =4. 217 times/km2 and lightning current amplitude is 12.3 kA on average. The probability of lightning is 1% when lightning current amplitude is more than 98. 9 kA. If the value of lightning current amplitude is greater than 94. 2 kA, the probability of lightning is 2%. According to characteristics of lightning activity, lightning risk assessment and its defense measures are given out in culture zones.

关 键 词：水产养殖 雷电活动特征 风险评估 雷电防御 

分 类 号：P427.3[天文地球—大气科学及气象学]