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| 一次多回击闪电过程的物理特性分析 | |
| 引用本文： | 瞿海燕,袁萍,张廷龙,郄秀书,张义军,张广庶.一次多回击闪电过程的物理特性分析[J].高原气象,2012,31(1):218-222. |
| 作者姓名： | 瞿海燕 袁萍 张廷龙 郄秀书 张义军 张广庶 |
| 作者单位： | 1. 西北师范大学物理与电子工程学院／甘肃省原子分子物理与功能材料重点实验室,甘肃兰州730070／中国科学院国家科学图书馆兰州分馆,甘肃兰州730000 2. 西北师范大学物理与电子工程学院／甘肃省原子分子物理与功能材料重点实验室,甘肃兰州,730070 3. 中国科学院寒区旱区环境与工程研究所,甘肃兰州,730000 4. 中国科学院大气物理研究所,北京,100029 5. 中国气象科学研究院,北京,100081 |
| 基金项目： | 西北师范大学科技创新工程项目 |
| 摘 要： | 利用西藏那曲无狭缝光栅摄谱仪获得的一次多回击云对地闪电光谱,研究了各放电通道的温度及其变化。结果表明,一次闪电不同回击过程的通道温度有明显差异,闪电前期的温度通常较高,之后呈逐渐降低趋势。将闪电光谱与同步电学观测资料相结合,讨论了光谱特征、通道温度与闪电放电特性、电流热效应的相关性。数据分析显示,光谱总强度与辐射电场的变化幅度成正比;光谱总强度与放电电流的大小成正比;通道温度与回击过程传输的能量为正相关。 |
| 关 键 词： | 多回击地闪 光谱 通道温度 同步电学观测 |
Analysis on Physical Characteristic of Lightning with Multiple Return Strokes |
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| QU Hai-yan,-,YUAN Ping,ZHANG Ting-long,QIE Xiu-shu,ZHANG Yi-jun,ZHANG Guang-shu.Analysis on Physical Characteristic of Lightning with Multiple Return Strokes[J].Plateau Meteorology,2012,31(1):218-222. | |
| Authors: | QU Hai-yan - YUAN Ping ZHANG Ting-long QIE Xiu-shu ZHANG Yi-jun ZHANG Guang-shu |
| Institution: | 1.Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province/College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,China; 2.The Lanzhou Branch of the National Science Library,Chinese Academy of Sciences,Lanzhou 730000,China; 3.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China; 4.Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China; 5.Chinese Academy of Meteorological Sciences,Beijing 100081,China) |
| Abstract: | Using the spectrum of cloud-to-ground(CG) lightning with multiple return strokes obtained by a slit-less spectrograph in Tibetan Plateau,the channel temperature and its change have been studied.The results show that the channel temperature oppears obvious difference in different strokes of lightning.Generally,the temperature at initial stage of flash is higher,and then gradually decreases.The spectral characteristic,channel temperature and their correlation with discharge characteristic and the thermal effect of current are discussed by combing the spectrum with synchronous electrical information at the first time.It is found that the total intensity of spectrum is directly proportional to the amplitude variations of radiation electric field,the total intensity of spectrum should bedirectly proportional to the intensity of discharge current,and the correlation between channel temperature and the energy transmitted in one return stroke is positive. |
| Keywords: | Multi-return stroke of cloud-to-ground lightning Spectrum Channel temperature Synchronous electrical observation |
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