医学用电位成像技术在地球物理反演中的应用

电阻率层析成像技术经过短短十几年的研究，已取得了令人瞩目的发展，并涌现出各种各样的反演方法。其中根据医学中应用电位成像（ＡＰＴ）技术改造过来的“等位线追踪法”以其简单、快速、有效等优点逐渐引起人们的注意。本文对这种方法作了深入细致的研究，对该方法的原理作了详细阐述，并给出微机实现和改进后的方法；对一些简单模型和较复杂模型的数值模拟结果进行了比较和分析；对较简单模型作了初步的物理模型实验，取得预期的效果；最后对影响该方法成像精度的一些因素进行分析和讨论，并给出一些结论和建议。

APPLICATION OF MEDICAL ORIENTED POTENTIAL TOMOGRAPHY TO GEOPHYSICAL INVERSION

Though the electrical resistivity tomography(ERT)method has developed just for a short time, it gains attractive achievements, and many kinds of interpretation are provided in which the "equipotential tracing method" transformed from the applied potential tomography(APT) technique in medicals caused more attention for its advantages such as simplicity, fastness and validity. A thorough and meticulous research is given in this paper. First the authors discuss the principle in detail and give ways of how to realize and improve it. By comparison and analysis, the numerical simulation experiments and physical trials of some simple models and much complicated ones show that it is effective in some aspects. In the end, some factors affecting the resolution and accuracy are examined using numerical simulation.