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《Chinese Journal of Geophysics》 2005-06
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Effects and assessments of geomagnetically induced currents(GIC)

MA Xiao-Bing~(1,2),Ian J.Ferguson~2,KONG Xiang-Ru~1,Xianghong Wu~2,YAN Yong-Li~11 Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China2 University of Manitoba,R3T 2N2,Canada  
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 possible maximum 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.
【Fund】: 国家自然科学基金(40374026 40436016和40474048)联合资助
【CateGory Index】: P318
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