| 天津轨道交通对地磁观测干扰的影响研究 |
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| 引用本文： | 谢凡,滕云田,徐学恭,邢西淳,胡星星.天津轨道交通对地磁观测干扰的影响研究[J].地震学报,2011,33(2):252-261. |
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| 作者姓名： | 谢凡 滕云田 徐学恭 邢西淳 胡星星 |
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| 作者单位： | 1）中国北京100081中国地震局地球物理研究所
2）中国天津301600天津市地震局静海地磁台
3）中国陕西泾阳713700陕西省地震局泾阳地磁台 |
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| 基金项目： | 地震行业科研专项(20070817)资助.中国地震局地球物理研究所论著11AC1004 |
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| 摘 要： | 直流牵引城市轨道交通系统在运行过程中产生的磁场对我国大城市周边地磁台站的观测数据产生较为严重的干扰.城市轨道交通运行过程中产生泄露电流是产生干扰的重要原因.本文以真空中的线电流磁场计算模型为基础,通过简化的远场磁场干扰模型对天津地铁轨道交通干扰进行理论建模.该模型计算简洁高效.通过对模型的数值模拟,获得了干扰随距离衰减...
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| 关 键 词： | 泄露电流 地磁观测 直流牵引轨道交通系统 人工干扰 |
Magnetic perturbation to geomagnetic observation caused by Tianjin railway transit |
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| Xie Fan,Teng Yuntian,Xu Xuegong,Xing Xichun,Hu Xingxing.Magnetic perturbation to geomagnetic observation caused by Tianjin railway transit[J].Acta Seismologica Sinica,2011,33(2):252-261. |
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| Authors: | Xie Fan Teng Yuntian Xu Xuegong Xing Xichun Hu Xingxing |
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| Institution: | 1）Institute of Geophysics, China Earthquake Administration, Beijing 100081, China2）Jinghai Geomagnetic Observatory, Tianjin Earthquake Administration，Tianjin 301600, China3）Jingyang Geomagnetic Observatory, Shannxi Earthquake Administration, Jingyang 713700, Chin |
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| Abstract: | Magnetic field created by DC traction power supply system has become a serious man-made perturbation to the operations of geomagnetic observatories near big cities in China.Leakage current produced by DC traction power supply system is the key factor.Based on vacuum line current magnetic field model in railway transit,this paper presents a more general and simple model for quantitative estimation of the magnetic perturbation.It is effective in fast estimating magnetic perturbation value.Using this model we ... |
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| Keywords: | leakage current geomagnetic observatory DC traction power supply system urban rail transit man-made perturbation |
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