雪崩、分形与雷电中强闪的自组织演化
he avalanche, fractals and the self-organized evolution in thunderstorm discharge
主要基于Bak等的自组织临界理论和Nottale 的标度相对性理论,强调了雪崩、分形与复杂系统自组织演化的联系,以此为基础,利用青藏高原中部那曲地区雷电地面电场仪资料,对强闪发生前放电雪崩的自组织演化特征进行了研究;通过放电雪崩的累计频率-幅度幂律特性分析,发现强闪前放电雪崩一般具有较好的分形特性,用探测系统长程关联特性(long-range corrections)的去势涨落分析(detrended fluctuation analysis)(DFA)法计算了相应阶段的赫斯特指数,发现其中长程持续的存在,两方面的分析都表明雷暴强强放电的发生可能具有自组织演化特征。
Mainly Based on the Bak’s self-organized criticality(SOC) model in complexity and the Nottale’s scale relativity theory in the fundamental physics, we argue that avalanche and fractal are signatures of Quantum mechanics and that they characterize self-organized evolution of complex system far from equilibrium . Using the electrical filed mill data of thunderstorm discharge of Naqu region in Qinghai-Xizang Plateau, the avalanche was defined through wavelet transformation, the cumulative frequency-amplitude relations of avalanche before first strong lightning are analyzed, long-range corrections are also detected using the well established detrended fluctuation analysis (DFA) method in fractal analysis, both fractal property of avalanche and long-range persistence revealed by above analysis suggest the possible existence of self-organized evolution in thunderstorm discharge, the possible related reasons for their emergence is discussed.
董万胜、苟学强、张义军
大气科学(气象学)高电压技术物理学
雪崩分形自组织去势涨落分析长程持续雷暴放电
avalanchefractalself-organizationdetrended fluctuation analysislong-range persistencelightning discharge
董万胜,苟学强,张义军 .雪崩、分形与雷电中强闪的自组织演化[EB/OL].(2005-02-17)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/200502-44.点此复制
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