| 地磁静日Y分量季节变化的物理讨论 |
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| 引用本文： | 沈长寿,高玉芬.地磁静日Y分量季节变化的物理讨论[J].地球物理学报,1995,38(3):305-310. |
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| 作者姓名： | 沈长寿 高玉芬 |
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| 作者单位： | 1. 北京大学地球物理系, 北京 100871;
2. 国家地震局地球物理研究所, 北京 100081;
3. 中国艺术研究院, 北京 100009 |
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| 摘 要： | 对电离层Ｅ层发电机Ｓｑ电流系和赤道区晨昏侧Ｆ层电流共同作用的地磁效应进行了定性分析和定量估计，并解释了静日地磁Ｙ分量日变化形态在冬、夏季近于反相的现象．所用物理机制能同样说明ＮｍａｘＦ２赤道异常驼峰每日出现、消失时间的季变化．
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| 关 键 词： | 地磁Y分量 电离层发电机 S_q电流系 F层电流 |
| 收稿时间： | 1994-03-24 |
THE PHYSICAL PROCESSES RELATED TO THE SEASONAL VARIATION OF GEOMAGENTIC FIELD Y-COMPONENT |
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| SHEN CHANG-SHOU.THE PHYSICAL PROCESSES RELATED TO THE SEASONAL VARIATION OF GEOMAGENTIC FIELD Y-COMPONENT[J].Chinese Journal of Geophysics,1995,38(3):305-310. |
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| Authors: | SHEN CHANG-SHOU |
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| Institution: | 1. Department of Geophysics, Peking University, Beijing 100871;
2. Institute of Geophysics, State Seismological Bureau, Beijing 100081;
3. The Academy of Arts of China, Beijing 100009 |
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| Abstract: | Combined geomagnetic effect of the Sq current system driven by the E-region dynamo and that of F-region current at dusk and dawn are analgzed and quantitatively estimated.The results give a proper interpretation to the season-to-season change Of the diurnal variation of Y-component,especially to the variation in Winter with reversed phase in comparison to that in other seasons.The same mechanism can also explain well the seasonal Variation of the NmaxF2 equatorial anomaly,i.e.the seasonal variation of the time when the crests appear and disappear. |
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| Keywords: | Geomagnetic Y-component Ionospheric dynamo S_q current system F-region current |
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