电阻率图像重建的佐迪(Zohdy)反演及其应用效果

本文讨论了利用佐迪反演方法对地表高密度电阻率法的数据采集结果进行电阻率图像重建。通过对多种复杂地电模型的数值模拟和野外实例的反演分析,表明该方法简单易行,计算成本较低,成像的分辨率高,效果较理想,将其用于地表测量的电阻率层析成像完全可行。作者用Fortran语言编制了实现上述过程的程序,对所有数学模型的正演计算均采用2.5维有限元法。为突出成像效果,本文在结果图示时均采用了伪彩色图像处理技术。

THE IMAGE RECONSTRUCTION OF ELECTRIC RESISTIVITY BY ZOHDY INVERSION AND ITS APPLICATION EFFECTS

This paper has discussed the image reconstruction of electric resistivity by Zohdy inversion.Zohdy inversion was advancd on the basis of surface surveying data; numerical modeling and field data inversion proved it to be simple,easy to handle,low in calculation cost,high in resolution and ideal in result. It is hence quite possible to use it in resistivity tomography of field surface surveying. Using Fortran Language, the authors made programming for realizing the aboe process, and used the 2. 5 dimensional finite element method in forward modeling. To improve the image results, they mapped the inversion data ny false color image processing technique.