摘要
为得到自恰且适用性强的雷云激励源以满足主动防雷理论与技术研究的需要,在回顾上世纪以来雷云荷电模型研究成果的基础上,对Wilson的正偶极子模型与Amoruso和Lattarulo的带电圆盘模型进行了详细推导,给出了相应的解析表达式,分析了各种模型的优点与不足.以带电圆盘模型为基础,建立了雷云元线性加权组合的荷电模型,并提出权矩阵反演拟合思想,推导得到了反演表达式.新模型克服了带电圆盘模型荷电结构单一,不能有效模拟雷云中多层电荷结构的缺点.文中给出了一个简单但不失代表性的算例,得到地面处最高背景场强绝对值19kV·m^(-1)的结果与公认地面场观测数据相吻合,验证了新模型的合理性.
In this paper we have reviewed the main achievements of research on thunderstorm charged models in the last century. We have derived the Wilson＇s dipole model and Amoruso﹠Lateral＇s charged disk model in detail and achieved their analytic solutions. We have analyzed every model＇s advantage and disadvantage. According to the Amoruso＆Lattarulo＇s charged disk model, a thunderstorm element linear weighting charging model is established to adapt the research of the new-style lightning protection system. The weight matrix could be fitted by inversion. We have derived inversion expression. This new model could simulate multilayer charge structure that had been observed in thunderstorms and is proved to be logical. For a representational calculation example we gave the result that the max background field is 19 kV·m-1 which dovetailed with the proverbial observed result of the earth＇s surface field.
出处
《地球物理学进展》
CSCD
北大核心
2010年第5期1617-1622,共6页
Progress in Geophysics
基金
武器装备探索研究项目(7130933)资助
关键词
雷云荷电
偶极子模型
带电圆盘模型
线性加权
反演
最小二乘法
平滑
thunderstorm charge,dipole model, charged disk model,linear weighting,inversion, least squares method,smoothing
