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广东沿海地区闪电通道的温度特性研究
引用本文:欧阳玉花,袁萍,郄秀书,王怀斌,贾向东,张华明.广东沿海地区闪电通道的温度特性研究[J].光谱学与光谱分析,2006,26(11):1988-1992.
作者姓名:欧阳玉花  袁萍  郄秀书  王怀斌  贾向东  张华明
作者单位:1. 西北师范大学物理与电子工程学院,甘肃,兰州,730070
2. 西北师范大学物理与电子工程学院,甘肃,兰州,730070;中国科学院寒区旱区环境与工程研究所,甘肃,兰州,730000
3. 中国科学院寒区旱区环境与工程研究所,甘肃,兰州,730000
4. 西北师范大学数学与信息学院,甘肃,兰州,730070
基金项目:国家自然科学基金 , 国家自然科学基金
摘    要:在广东沿海地区,用无狭缝光栅摄谱仪获得了云对地闪电回击过程的光谱.经过光谱特征分析和谱线辨认,依据测得的谱线相对强度以及多组态Dirac-Fock方法得到的谱线跃迁参数,采用多谱线法,对每个闪电回击通道不同高度处的温度进行了定量计算.结果表明,强闪电放电过程对应的通道温度较高;分析通道不同高度处的温度值,发现对大多数闪电,同一回击通道随高度的增加温度略呈减小趋势;与青海高原相比,广东沿海地区强闪电较多,光谱上激发能高的一次电离氧离子的跃迁谱线明显增多.

关 键 词:闪电光谱  多谱线法  通道温度
文章编号:1000-0593(2006)11-1988-05
收稿时间:2005-08-28
修稿时间:2005-11-08

Temperature Study on Lightning Return Stroke in the Coastal Area of Guangdong
OUYANG Yu-hua,YUAN Ping,QIE Xiu-shu,WANG Huai-bin,JIA Xiang-dong,ZHANG Hua-ming.Temperature Study on Lightning Return Stroke in the Coastal Area of Guangdong[J].Spectroscopy and Spectral Analysis,2006,26(11):1988-1992.
Authors:OUYANG Yu-hua  YUAN Ping  QIE Xiu-shu  WANG Huai-bin  JIA Xiang-dong  ZHANG Hua-ming
Institution:1. College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China; 2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of .Sciences, Lanzhou 730000, China ;3. College of Mathematics and Information, Northwest Normal University, Lanzhou 730070, China
Abstract:In the coastal area of Guangdong, slit-less spectra for first return strokes of lightning between the cloud and ground were obtained. After spectrum analysis and line identification were done by using multi-configuration Dirac-Fock (MCDF) method, parameters like wavelengths, oscillator strengths, transition probabilities, and excitation energies were calculated. According to the relative intensities of lines and transition parameters, temperatures for individual lightning strokes and at different heights of the discharge channel were calculated by using multiple-line method. The result shows that the temperatures in return stroke channel varied from stroke to stroke. In general, the more intensive the lightning discharge, the higher the value of channel temperature. On the other hand, for a certain return stroke channel, the temperatures at different positions show signs of falling away with increasing height along the discharge channel. Compared with that of Qinghai plateau, lightning in Guangdong coastal area is more intensive, and the lines from higher excitation potential of N II in these lightning spectra are easier observed.
Keywords:Lightning spectra  Multiple-line method  Channel temperature
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