| 地磁捕获区及某些空間相关現象的非軸对称形状 |
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| 引用本文： | 徐荣栏,谢榴香.地磁捕获区及某些空間相关現象的非軸对称形状[J].地球物理学报,1965,14(2):73-84. |
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| 作者姓名： | 徐荣栏 谢榴香 |
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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： | 理论研究与高空探测结果表明,地磁层的边界在太阳风的作用下将发生形变,形成一个水滴式的界面。本文讨论了带电粒子在这样一个磁层內的运动,以及它与某些非轴对称的空间物理相关现象的关系。由于带电粒子在形变后的地磁場內的运动是比较复杂的,因此我们只讨论这些粒子的迴旋中心在整个漂移运动中所在的卢等于常数的漂移曲面。计算结果表明,磁层內捕获区的立体图形相对于磁轴来说是非轴对称的,向阳面此背阳面大,这个结果与人造卫星的採测结果以及极光日变化的资料是很接近的。与此同时,我们还统计了1957与1958年高纬度区31个地磁台在平靜时每天的平均日变化。所有上述结果表明,在磁层內的上述相关现象都是非轴对称的。
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| 关 键 词： | 带电粒子 捕获区 非轴对称性 曲面方程 漂移运动 日变化 磁层 地磁台 背阳面 极光带 |
THE ASYMMETRICAL CONFIGURATION OF THE TRAPPED REGION AND SOME CORRELATED AERONOMICAL PHENOMENA |
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| SHU YUNG-LAN HSIEH LIU-HSIANG.THE ASYMMETRICAL CONFIGURATION OF THE TRAPPED REGION AND SOME CORRELATED AERONOMICAL PHENOMENA[J].Chinese Journal of Geophysics,1965,14(2):73-84. |
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| Authors: | SHU YUNG-LAN HSIEH LIU-HSIANG |
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| Institution: | Institute of Geophysics and Meteorology, Academia Sinica |
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| Abstract: | Under the action of solar wind, the magnetosphere boundary is generally deformed like a falling water drop. Theoretical investigations as well as space explorations verify this conjecture. In this paper we study the motion of the charged particles in such a deformed magnetosphere in conjunction with certain asymmetrical aeronomical phenomena. Since the motion of charged particles in a deformed geomagnetic field is very complicated, we limit ourselves only to discussing the drifting surface β=const, defined by the guiding center of the drifting particles. The result of the calculation shows that the three-dimensional configuration of the trapped regions inside the magnetosphere is asymmetric with respect to the magnetic axis. The frontal part facing the sun is much larger than the rear part. The results of the calculation are compared with the data of Explorer ⅪⅤ, Injun Ⅰ, Ⅲ and the diurnal variation of auroras. The results are in good accord with experiments. We have also calculated the mean daily variation of K index of 31 stations of high latitude during the relative magnetic quiet period of year 1957 and 1958. All these results demonstrate the asymmetrical characteristics of the correlated phenomena inside the magnetosphere. |
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