Abstract

磁层磁场的几何结构是空间物理中的重要研究内容.本文采用曲率半径分析方法,结合Cluster立体探测的相关知识和背景,利用Cluster立体探测的优势,通过对Cluster 2001年的立体探测数据的研究,分析了磁层各区域的磁力线结构,包括背阳面、Cusp区以及昏侧,得出各区域中磁力线的曲率半径大小,曲率矢量以及磁力线密切面的法线矢量的方向.利用这些参量直接确定出该区域中磁力线的空间几何构型,进而揭示了该区域磁场的三维立体结构.所得结果也验证了曲率半径分析方法的正确性.在科学探测数据完备的情况下,将这一研究方法应用到磁层中其他所有区域,可以得到整个磁层的详细三维结构模型,这具有重要的科学意义.

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