| 雪崩、分形与雷暴放电中强闪的自组织演化 |
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| 引用本文： | 苟学强,张义军,董万胜,郄秀书.雪崩、分形与雷暴放电中强闪的自组织演化[J].高原气象,2006,25(5):849-854. |
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| 作者姓名： | 苟学强 张义军 董万胜 郄秀书 |
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| 作者单位： | 1. 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000;西北师范大学,物理与电子工程学院,甘肃,兰州,730070
2. 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金
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科技部科技基础条件平台建设计划 |
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| 摘 要： | 强调了雪崩、分形与远离平衡系统自组织演化的联系。利用2003年夏季青藏高原中部地区雷暴放电的地面电场野外观测资料,基于近年来发展的分形及多重分形分析中的去势涨落分析(detrend-ed fluctuation analysis,DFA)方法,对强闪前电场信号的关联及多重分形特征进行了分析,发现强放电前过程具有明显的分形和多重分形特征,多重分形谱与推广的二项倍增串级模式符合。分析在一定程度上表明了雷暴强放电发生的可能的自组织演化性。
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| 关 键 词： | 雪崩 分形 多重分形 去势涨落分析 雷暴放电 |
| 文章编号： | 1000-0534（2006）05-0849-06 |
| 收稿时间： | 2005-01-10 |
| 修稿时间： | 2005-01-102005-11-21 |
The Valanche, Fractals and the Self-Organized Evolution with Occurrence of Strong Discharge in Thunderstorm |
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| GOU Xue-qiang,ZHANG Yi-jun,DONG Wan-sheng,QIE Xiu-shu.The Valanche, Fractals and the Self-Organized Evolution with Occurrence of Strong Discharge in Thunderstorm[J].Plateau Meteorology,2006,25(5):849-854. |
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| Authors: | GOU Xue-qiang ZHANG Yi-jun DONG Wan-sheng QIE Xiu-shu |
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| Institution: | 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China ; 2. College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China |
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| Abstract: | It is considered that avalanche and fractal characterize self-organized evolution of complex system far from equilibrium.By using the ground electrical filed data obtained in the middle of Qinghai-Xizang Plateau region,long-range correlations and multifractal behavior of strong lightning discharges in thunderstorm is investigated with recently developed detrended fluctuation analysis(DFA) and multifractal detrend fluctuation analysis(MF-DFA) method,it is found that the clear long-range persistence and multfractality are involve in the strong lightning discharges,all scaling behavior is consisted with a modified version of the binomial multiplicative cascade multifractal model,the analysis suggest the possible existence of self-organized evolution in thunderstorm discharge. |
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| Keywords: | Avalanche Fractal Multifractal Detrended fluctuation analysis Lightning discharge |
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