中低纬度Pc3-4地磁脉动特性研究——子午工程数据分析初步结果

张青梅; 王赤; 李晖; 李传起

doi:10.11728/cjss2013.06.608

中低纬度Pc3-4地磁脉动特性研究——子午工程数据分析初步结果

doi: 10.11728/cjss2013.06.608 cstr: 32142.14.cjss2013.06.608

张青梅^1,2,
王赤^2, ,,
李晖²,
李传起^1,3

1.
南京信息工程大学数学与统计学院南京 210044
2.
中国科学院空间科学与应用研究中心空间天气学国家重点实验室北京 100190
3.
广西师范大学电子工程学院桂林 541004

基金项目: 国家重点基础研究发展计划项目(2012CB825602);国家自然科学基金项目(41231067, 41204118)和国家重点实验室专项基金项目共同资助

详细信息

作者简介:

张青梅,E-mail:qmzhang@spaceweather.ac.cn

通讯作者:

王赤,E-mail:cw@spaceweather.ac.cn

中图分类号: P353
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出版历程
- 收稿日期: 2013-01-10
- 修回日期: 2013-03-18
- 刊出日期: 2013-11-15

Characters of the Pc3-4 Magnetic Pulsations at Middle and Low Latitudes: Preliminary Geomagnetic Results From Chinese Meridian Project

Zhang Qingmei^1,2,
Wang Chi^{2
, ,},
Li Hui²,
Li Chuanqi^1,3

1.
College of Math and Statistics, Nanjing University of Information Science and Technology, Nanjing 210044
2.
State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190
3.
College of Electronic Engineering, Guangxi Normal University, Guilin 541004

摘要

摘要: 利用新建成的子午工程地磁台站数据,对比分析了地磁平静期间(2011年3月20-27日)和磁暴期间(2011年9月25日至10月1日)Pc3-4地磁脉动的时空分布特征及其对行星际条件的响应.数据分析结果表明,中低纬度(1.3<L<2.3,L为磁壳参数)的Pc3-4地磁脉动在这两个时期内的分布存在明显的晨昏不对称性,在昼侧前出现明显的Pc3-4地磁脉动并与行星际上游波动密切相关,其振幅增强可能与太阳风动压脉冲相关,高速太阳风更易导致Pc3-4地磁脉动;而对于近赤道低纬(L<1.3)区域,无论是在地磁平静期还是磁暴期均未能观测到Pc3-4地磁脉动,Pc3-4地磁脉动存在明显的纬度效应.
- Pc3-4地磁脉动 /
- 行星际总磁场 /
- 锥角 /
- 太阳风速度
Abstract: The characters of the Pc3-4 magnetic pulsations and their relationships to interplanetary conditions were studies during the periods of both the magnetic quite (March 20 to 27, 2011) and storm (September 25 to October 1, 2011), using ground-based geomagnetic field measurements from the new-developed Chinese Meridian Project. Preliminary results show there exist significant dawn-dusk asymmetric distribution of the Pc3-4 pulsations in the middle-low latitudes (1.3<L < 2.3), with Pc3-4 pulsations activity are observed mainly in the pre-noon sector, during both time periods. They are closely related to the interplanetary conditions, with high-speed solar wind and solar wind dynamic pressure pulsation leading to enhancement of the Pc3-4. However, Pc3-4 pulsations activity is not observed near the equatorial low latitudes (L <1.3) due to latitudinal effect.
- Pc3-4 pulsations /
- Interplanetary Magnetic Field (IMF) /
- Cone angle /
- Solar wind velocity

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参考文献(35)

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