New method for solving inductive electric fields in the non-uniformly conducting ionosphere
New method for solving inductive electric fields in the non-uniformly conducting ionosphere
复制标题
求解非均匀传导电离层感应电场的新方法
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
A. Viljanen
中科院分区：
文献类型：
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作者：
H. Vanhamaki;O. Amm;A. Viljanen
抽象的。本文提出了一种求解电离层感应电场的新计算方法。电离层电场的电位部分的时间序列，连同霍尔和佩德森电导作为输入到这个方法。输出是电离层电场的感应旋转部分的时间序列。该计算方法在时域中工作，可用于非均匀的、随时间变化的电导。此外，对输入电势电场没有特别的对称性要求。所提出的方法利用特殊的非局部矢量基函数称为笛卡尔基本电流系统（CECS）。这个向量基提供了一种方便的方法来表示二维向量场的无旋度和无发散部分，并且使得使用简单的线性代数来解决归纳问题成为可能。新的计算方法进行了验证，通过比较它与以前发表的结果阿尔芬波反射从一个均匀导电电离层。
Abstract. We present a new calculation method for solving inductive electric fields in the ionosphere. The time series of the potential part of the ionospheric electric field, together with the Hall and Pedersen conductances serves as the input to this method. The output is the time series of the induced rotational part of the ionospheric electric field. The calculation method works in the time-domain and can be used with non-uniform, time-dependent conductances. In addition, no particular symmetry requirements are imposed on the input potential electric field. The presented method makes use of special non-local vector basis functions called the Cartesian Elementary Current Systems (CECS). This vector basis offers a convenient way of representing curl-free and divergence-free parts of 2-dimensional vector fields and makes it possible to solve the induction problem using simple linear algebra. The new calculation method is validated by comparing it with previously published results for Alfven wave reflection from a uniformly conducting ionosphere.