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2000年4月6日磁暴夜侧场向电流变化特征 被引量:5

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摘要 利用全球地磁台站观测数据,研究了2000年4月6日超级磁暴期间北半球夜侧场向电流变化特征.结果表明,磁暴主相期间,北半球夜侧中纬地区呈现东向磁扰的主要特征,子夜后扇区东向磁扰强于子夜前扇区.这表明夜侧高纬电离层的场向电流以流出电离层为主,流出电离层的场向电流中心在子夜后扇区,靠近子夜,即Ⅱ区场向电流和部分环电流体系在磁暴主相期间向昏侧偏转.磁层亚暴对夜侧流出电离层的场向电流有一个先减弱后增强的效应.磁暴主相期间部分环电流和Ⅱ区场向电流的发展与子夜后-晨侧扇区的西向电集流增强相对应.
出处 《科学通报》 EI CAS CSCD 北大核心 2010年第14期1409-1415,共7页 Chinese Science Bulletin
基金 国家重点基础研究发展计划(2006CB806305) 国家自然科学基金(40874088 40890163) 公益性行业(气象)科研专项经费(GYHY200806072) 中央级公益性科研院所基本科研业务费专项(058904)资助项目
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