论文标题
局部源电流对磁铁响应的高度影响
Altitude effects of localized source currents on magnetotelluric responses
论文作者
论文摘要
在文献中，在周期和地下结构的变化方面，已经报道了局部源电流对地球磁铁（MT）响应的影响。这项研究的重点是由源电流的垂直和水平距离变化引起的MT响应的偏差。 20和200 s的MT响应在与源电流的不同距离处计算。源距离的略有变化会导致MT响应的变化，并且偏差很大，尤其是在MT数据分析（即100-150 km）中探索的高度上，E层存在。源场的垂直距离有所不同，因为电离层中电导率的分布以及控制电离层电气过程的区域的时间变化。因此，在评估MT响应的时间变化时，我们应该通过检查电离层环境仔细对待它们。
The effects of localized source currents on Earth's magnetotelluric (MT) responses have been reported in the literature in terms of the changes in period and subsurface structure. The focus in this study is on the bias within the MT responses arising from variations in the vertical and horizontal distances of the source current. The MT responses at 20 and 200 s were calculated at various distances from the source current. A slight change in source distance causes a shift in the MT responses, and the bias is large, especially over the altitudes explored in the MT data analysis (i.e., 100-150 km), where the E layer exists. The vertical distance of the source field varies because the distribution of conductivity with altitude in the ionosphere and the region controlling the ionospheric electrical process change temporally. Thus, in assessing the temporal changes in MT responses, we should treat them carefully by checking the ionospheric environment.
