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基于多台站观测的中国区域地磁指数

王楚钦 杜丹 张效信 赵明现 蒋勇

王楚钦, 杜丹, 张效信, 赵明现, 蒋勇. 基于多台站观测的中国区域地磁指数[J]. 空间科学学报, 2015, 35(1): 26-39. doi: 10.11728/cjss2015.01.026
引用本文: 王楚钦, 杜丹, 张效信, 赵明现, 蒋勇. 基于多台站观测的中国区域地磁指数[J]. 空间科学学报, 2015, 35(1): 26-39. doi: 10.11728/cjss2015.01.026
Wang Chuqin, Du Dan, Zhang Xiaoxin, Zhao Mingxian, Jiang Yong. New regional geomagnetic activity index based on multi-station observation[J]. Journal of Space Science, 2015, 35(1): 26-39. doi: 10.11728/cjss2015.01.026
Citation: Wang Chuqin, Du Dan, Zhang Xiaoxin, Zhao Mingxian, Jiang Yong. New regional geomagnetic activity index based on multi-station observation[J]. Journal of Space Science, 2015, 35(1): 26-39. doi: 10.11728/cjss2015.01.026

基于多台站观测的中国区域地磁指数

doi: 10.11728/cjss2015.01.026
基金项目: 国家高技术研究发展计划项目(2012AA121002),国家重点基础研究发展计划项目(2011CB811406),国家重大科学研究计划项目(2012CB957803)和国家自然科学青年基金项目(41304144)共同资助
详细信息
  • 中图分类号: P353

New regional geomagnetic activity index based on multi-station observation

  • 摘要: 利用中国14个地磁台站和全球23个地磁台站的H分量分钟值数据,分析单台站小时幅度指数rH的时空分布特征,在此基础上结合台站之间rH指数的相似度度量(残差指数Ra),采用K均值聚类算法将中国14个地磁台站划分为7个区域,根据加权法计算各区域的区域指数Rr.结果表明,rH指数具有27天太阳自转周变化,季节变化不显著,但仍存在春秋季大而冬夏季小的特征;在空间变化上,rH随纬度的增高而增大,并且在磁暴期间rH指数的幅值和形态均表现出明显的经度差异,随地方时呈现晨-昏不对称现象;与Dst指数、SYM-H指数、Kp指数及各区域内台站的H分量观测数据对比分析发现,区域指数Rr能有效反映区域地磁扰动.

     

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出版历程
  • 收稿日期:  2014-02-24
  • 修回日期:  2014-09-17
  • 刊出日期:  2015-01-15

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