大气科学2012，Vol.36Issue(1)：77-88,12.
山东人工引发雷电综合观测实验及回击电流特征
Shandong Artificially Triggering Lightning Experiment and Current Characterization of Return Stroke
摘要
Abstract
Shandong Artificially Triggering Lightning Experiment (SHATLE) has been conducted continuously since the summer of 2005. During the six years from 2005 to 2010, twenty-two negative lightning flashes containing eighty-eight return strokes were successfully triggered. Channel base currents, close electromagnetic fields, and high-speed camera images were obtained simultaneously for some of the strokes. Based on directly measured currents for thirty-six return strokes, the geometric mean of return stroke peak current was about 12. 1 kA with a max-imum of 41. 6 kA and a minimum of 4. 4 kA, the half peak width of current varied from 1 to 68 μs, and the geometric mean values of 10%- 90% risetime, charge transfer, and action integral were about 1. 9μs, 0. 86 C, and 2. 6× 103A2 ? s, respectively. The surface electric field at 30 m away from the discharge channel caused by a return stroke with peak current of 16. 5 kA reached 111. 9 kV/m. The geometric mean of magnetic field at 60 m away from the discharge channel was about 52 μT. The peak current and charge transfer of some large M components were comparable with those of return stroke. The speed of upward positive leaders in the initial stage of triggered flashes was about 0. 96 ×105 m/s.关键词
人工引发雷电/回击/放电电流/近距离电磁场/光学特征Key words
artificially triggered lightning/return stroke/discharge current/close electromagnetic field/optical characteristics分类
天文与地球科学引用本文复制引用
郄秀书,杨静,蒋如斌,王彩霞,冯桂力,吴书君,张广庶..山东人工引发雷电综合观测实验及回击电流特征[J].大气科学,2012,36(1):77-88,12.基金项目
中国科学院知识创新工程重要方向项目KZCX2-YW-206,国家自然科学基金资助项目41175002、40930949,中国科学院"百人计划"专项经费 （）
