| 南极中山站1991年地磁静日S_q变化 |
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| 引用本文： | 刘长发,刘春节,焦承民,汪阳.南极中山站1991年地磁静日S_q变化[J].极地研究,1995,7(3):87-94. |
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| 作者姓名： | 刘长发 刘春节 焦承民 汪阳 |
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| 作者单位： | 中国科学院地球物理研究所 |
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| 摘 要： | 本文分析了１９９１年太阳活动峰年南极中山站地磁静日Ｓｑ变化，结果表明：１）地磁静日Ｓｑ变化叠加有很多扰动。Ｓｑ场是由Ｓ０ｑ场和Ｓｐｑ场所组成。２）Ｓ０ｑ场变化比较规则，其极昼月（夏季）的变幅比极夜月（冬季）大很多。在极昼月Ｓ０ｑ（Ｈ）变化出现有双峰图象。Ｓ０ｑ场主要是由高纬度极区电离层Ｓｑ电流体系所控制。３）Ｓｐｑ场的变化形态没有昼夜之分；它的变化强度为冬季小、夏季大。Ｓｐｑ场源主要是依赖于场向电流和电离层电导率。４）Ｓ０ｑ（Ｚ）变化比Ｓ０ｑ（Ｈ）变化要大，特别是在极夜的冬季，Ｓ０ｑ（Ｚ）的变幅比Ｓ０ｑ（Ｈ）大２／３倍。本文对北京地磁中心台磁静日资料也一并进行了分析。Ｓｑ变化主要是由北半球中、低纬电离层Ｓｑ电流体系所引起的
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| 关 键 词： | 极昼 极夜 场向电流 地磁静日 中山站 |
THE QUIET DAILY VARIATIONS S q OF GEOMAGNETIC FIELD AT ZHONGSHAN STATION,ANTARCTICA IN 1991 |
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| Liu Changfa,Liu Chunjie,Jiao Chengmin,Wang Yang.THE QUIET DAILY VARIATIONS S q OF GEOMAGNETIC FIELD AT ZHONGSHAN STATION,ANTARCTICA IN 1991[J].Chinese Journal of Polar Research,1995,7(3):87-94. |
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| Authors: | Liu Changfa Liu Chunjie Jiao Chengmin Wang Yang |
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| Abstract: | The geomagnetically quiet daily variations S q field are analysed at Zhongshan Station,Antarctica during the period of maximum solar activities in 1991.The results show that:1) The geomagnetically quiet daily variations S q field are superposed more disturbances.S q field consits of both the S 0 q field and S p q field.2)S 0 q field are ratter regulervariations.Amplitudes of variation are larger in the sunlift ( Summer) polar region than in the dark (Winter) polar region.S 0 q(H) variation appears a twinpeak pattern in sunlift (Summer).S 0 q field are mainly controlled by the higher latitudinal ionospheric S q current system in the polar region.3)The morphology of S p q field variability have not difference both in the daytime and the nighttime.The intensity of S p q field variability is less in the winter than in the summer.Therefor S p q is largely depend upon both field aligned currents and ionospheric conductivity.4) S 0 q(Z) variation is larger than S 0 q(H) vatiation.In particular the amplitude of S 0 q (Z) is twice as larger as S 0 q(H) in winter.The geomagnetic quiet day data are also analysed at Beijing Ming Tombs geomagnetic observatory center of China in 1991.S q field variations caused by the S q current system at the mid low latitudinal ionosphere in the north hemisphere. |
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| Keywords: | s sunlift polar region dark polar region field aligned current quiet day Zhongshan Station |
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