| 利用低频磁场天线遥感测量人工引雷中的初始连续电流 |
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| 引用本文： | 樊艳峰,陆高鹏,蒋如斌,张鸿波,刘明远,郄秀书.利用低频磁场天线遥感测量人工引雷中的初始连续电流[J].大气科学,2017,41(5):1027-1036. |
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| 作者姓名： | 樊艳峰 陆高鹏 蒋如斌 张鸿波 刘明远 郄秀书 |
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| 作者单位： | 1.中国科学院大气物理研究所, 北京 100029 |
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| 基金项目： | 国家重点基础研究发展计划项目（973计划）2014CB441405,中国科学院"百人计划"项目2013068,国家自然科学基金项目41305005、41622501 |
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| 摘 要： | 2014年夏季的山东人工引雷实验中,我们利用高灵敏度宽频段磁场天线在距引雷点78 m的距离上开展了对人工引雷初始连续电流过程的遥感测量。通过分析实验期间5次人工引雷的综合观测数据,发现磁场遥感方法对人工引雷中特有的初始连续电流有很好的反演效果。通过对78 m距离上获得的磁场测量信号进行积分处理,能够有效地抑制测量过程中白噪声的影响,从而反演得到初始连续电流的低噪声时变波形。该方法为获取空中引雷实验中的初始连续电流波形提供了一种解决方案,同时也可用于反演近距离自然闪电中地闪回击中的长连续电流的时变波形。
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| 关 键 词： | 人工引雷 低频磁场天线 初始连续电流 长连续电流 |
| 收稿时间： | 2016/10/20 0:00:00 |
Application of Low-frequency Magnetic Sensor for Remote Measurement of the Initial Continuous Current in Rocket-triggering Lightning |
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| FAN Yanfeng,LU Gaopeng,JIANG Rubin,ZHANG Hongbo,LIU Mingyuan and QIE Xiushu.Application of Low-frequency Magnetic Sensor for Remote Measurement of the Initial Continuous Current in Rocket-triggering Lightning[J].Chinese Journal of Atmospheric Sciences,2017,41(5):1027-1036. |
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| Authors: | FAN Yanfeng LU Gaopeng JIANG Rubin ZHANG Hongbo LIU Mingyuan and QIE Xiushu |
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| Institution: | 1.Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 1000292.University of Chinese Academy of Sciences, Beijing 1000493.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044 |
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| Abstract: | We present a new method to remotely measure the initial continuous current in classical rocket-triggering lightning using a compact low-frequency magnetic sensor deployed at 78-m distance from the channel base. The current waveform retrieved from the numerical integration of close magnetic signals shows very well the general feature and all the slow variations (such as the initial continuous current pulse) embedded in the channel base current measured with a shunt. Compared with the shunt measurement, the new method has the advantage of significantly reduced noise. This method can be applied to remotely probe the initial continuous current in upward lightning from high objects and altitude-triggering lightning, as well as long continuing current in natural cloud-to-ground lightning at a close range. |
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| Keywords: | Rocket-triggering lightning Low-frequency magnetic sensor Initial continuous current Long continuing current |
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