Current and close EM field of rocket-triggered lightning flashes in SHATLE 2005-2010
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 maximum 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 transferred and action integral were about 1.9 μs, 0.86 C and 2.6 ×103 A2s, respectively.The electric field at 30 m caused by a return stroke with peak current of 16.5 kA reached 56.0 kV/m.The geometric mean of magnetic field at 60 m was about 52 μT.
Xiushu Qie Jing Yang Rubin Jiang
Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO),Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029
国际会议
成都
英文
1-4
2011-11-01（万方平台首次上网日期，不代表论文的发表时间）