| 地磁感应电流（GIC）的作用与评估 |
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| 引用本文： | 马晓冰,Ian J.Ferguson,孔祥儒,Xianghong Wu,闫永利.地磁感应电流（GIC）的作用与评估[J].地球物理学报,2005,48(6):1282-1287. |
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| 作者姓名： | 马晓冰 Ian J.Ferguson 孔祥儒 Xianghong Wu 闫永利 |
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| 作者单位： | 1.中国科学院地质与地球物理研究所，北京 100029 2 University of Manitoba, Canada R3T 2 N2 |
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| 基金项目： | 国家自然科学基金(40374026,40436016和40474048)联合资助 |
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| 摘 要： | 地磁感应电流（GIC）可能对各种人工长距离导电体造成影响与危害.地磁扰动产生的感应电场的强度与地磁场强度、地下电阻率结构相关，在导电系统内生成的GIC的强度则同时与导电系统的内在结构有关.计算了加拿大Manitoba省三个典型地区在2000年7月15日的一个强烈磁暴期间产生的感应电场.通过对地磁活动性的统计分析，估计加拿大魁北克电网可能经受的最大GIC达每相78A（一年一次）和234A（每十年一次）.
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| 关 键 词： | 地磁感应电流 地磁扰动 感应电场 |
| 文章编号： | 0001-5733（2005）06-1282-06 |
| 收稿时间： | 2005-01-20 |
| 修稿时间： | 2005-01-202005-09-06 |
Effects and assessments of geomagnetically induced currents (GIC) |
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| MA Xiao-Bing,Ian J.Ferguson,KONG Xiang-Ru,Xianghong Wu,YAN Yong-Li.Effects and assessments of geomagnetically induced currents (GIC)[J].Chinese Journal of Geophysics,2005,48(6):1282-1287. |
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| Authors: | MA Xiao-Bing Ian JFerguson KONG Xiang-Ru Xianghong Wu YAN Yong-Li |
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| Institution: | 1.Institute of Geology and Geophysics，Chinese Academy of Sciences, Beijing 100029, China 2 University of Manitoba, R3T 2N2, Canada |
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| Abstract: | Geomagnetically induced currents (GIC) may have effects or hazards on various man made long distance conductors. The electric field produced during a geomagnetic disturbance is dependent on the magnitude and frequency of magnetic field variations and the Earth's surface impedance. The GIC in a conductor system is also related to the infrastructure of the system. In this study, the induced electric fields are separately calculated during a storm with Kp=9 in July 15, 2000 in the Winnipeg area, southern Manitoba and northern Manitoba. It is assesed that the possiblemaximum 1 year (and 10 year) GIC values are 78(234) A/ phase on the Hydro Quebéc power system according to the statistical analysis of geomagnetic activity. |
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| Keywords: | Geomagnetically induced currents(GIC) Geomagnetic disturbance Electric field |
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