空间科学学报2012，Vol.32Issue(3)：321-335,15.
磁静日期间中国大陆地区外源弱磁场研究
Study on External Weak Magnetic Field During Magnetic Quiet Periods Over Chinese Mainland
摘要
Abstract
The fourth generation comprehensive model of magnetic field CM4 was used to research the variation of external weak field in magnetically quiet periods over Chinese mainland during 1960—2000.The distribution and variation of ionospheric induced field,toroidal field and magnetospheric induced field separated from the external field were also calculated and analyzed.Results show that in terms of lithospheric induced field,component X＇s trend of variation was increased firstly,then decreased with time,the amplitude is about 7.3 nT;Component Y＇s trend of variation was initially decreased,and increased with time,the amplitude is about 0.8nT;Component Z＇s trend of variation was increased and then decreased with time,the amplitude is about 5.5 nT.The variation amplitude of toroidal field and magnetospheric induced field of three components are relative small.Their distribution during 1960-1970 and 1970-1980,1980-1990 and 1990-2000 show an interesting phenomenon that areas of positive and negative values exchanged each other,which may has something related with solar 11 years＇ activities.Finally,analysis and explaination of these results were given.关键词
CM4模型/电离层感应场/磁层感应场Key words
CM4/Ionospheric induced field/Magnetospheric induced field分类
天文与地球科学引用本文复制引用
冯彦,安振昌,毛飞,孙涵,蒋勇,柳士俊..磁静日期间中国大陆地区外源弱磁场研究[J].空间科学学报,2012,32(3):321-335,15.基金项目
国家高技术研究发展计划课题研究专项资助 （）
