高级检索

山东人工引雷二十年:实验与研究进展

Two-decades of the Shandong triggering lightning experiment (SHATLE) : Experimental and Research Advances

  • 摘要: 自2005年起,中国科学院大气物理研究所持续在山东滨州开展人工引雷实验(SHATLE),本文系统回顾了2005~2025年间实验取得的主要成果。该实验自主设计和研制了拖带金属导线的专用引雷火箭,目前该技术已推广至全国所有人工引雷实验中。实验首次在国内获得并已经积累了一批完整的微秒量级时间分辨率的雷电流波形及其近距离电场变化资料;通过不断研制和升级改进高时空分辨率雷电探测设备,研究揭示了正极性先导的跳跃式不连续传输特征和机制,提出了雷电与地面物体相互作用的新机制,发现了云内放电过程对闪电接地和M分量等过程的影响。在观测实验和资料分析基础上,开展了人工引雷放电过程的建模和数值模拟研究,改进了M分量机制,建立了雷电中和电荷量、通道电流和电磁场变化的规律以及它们之间的定量关系;观测实验还揭示了闪电和雷暴通过诱发中高层大气放电对中上层大气的影响,近期的研究还发现了闪电和雷暴对大气成分的影响。

     

    Abstract: Since 2005, the Institute of Atmospheric Physics (IAP) of the Chinese Academy of Sciences (CAS) has been conducting the SHAndong Triggering Lightning Experiment (SHATLE) in Binzhou, Shandong Province. This paper reviews the key achievements of the experiment from 2005 to 2025. We specially designed and developed trailing-wire-rocket for triggering lightning experiment, a technology that has since been adopted in all triggering lightning experiments across China. The experiment observed, for the first time in China, the microsecond-resolution lightning current waveforms and their corresponding close-range electric field variations, and a comprehensive dataset has accumulated in the last two decades. Through the continuous development and upgrading of high spatiotemporal resolution lightning detection technologies, the study has revealed the intermittent and stepping propagation characteristics and mechanisms of positive leaders, proposed novel mechanisms for the interaction between lightning and ground objects, and identified the influence of intracloud discharge processes on lightning grounding and M-component processes. Based on observational data and analysis, modeling and numerical simulation studies of triggered lightning discharge processes were conducted, leading to improvements in the understanding of M-component mechanisms and the establishment of quantitative relationships among lightning-neutralized charge, channel currents, and electromagnetic field variations. The experiments also revealed the effects of lightning and thunderstorms on the middle and upper atmosphere through the induced Transient Luminous Events above the thundercloud. Recent studies have further uncovered the influence of lightning and thunderstorms on atmospheric composition. Moreover, the rocket-triggering lightning platform have also played a significant role in testing and improving lightning protection technologies for lightning-sensitive industries such as telecommunications, petrochemicals, power systems, and so on.

     

/

返回文章
返回