电阻率/激发极化率数据的二维反演程序

2 D INVERSION PROGRAMS OF INDUCED POLARIZATION DATA

本程序在目前日本流行的电阻率／激发极化法二维反演程序［４］基础上，将电导率和极化率分块均匀变为分块连续变化，并在目标函数中加入了更多的先验信息，使反演结果的唯一性和真实性大大增加。在有限元正演模拟中，又采用三角单元剖分，使实测数据在反演以前不需要进行地形改正。本文介绍了该方法的基本原理和程序的使用方法。

Based on Sasaki′s 2 D inversion programs of induced polarization data, the authors have developed a new 2 D inversion program for resistivity and induced polarization data. In this method, the conductivity and polarization effect can change linearly in each block, and to solve non uniqueness of the inversion solution, the more prior information of solution are incorporated into the least aquares formulation. The basic theory and the method of the programs are presented in this paper. Also some numerical examples are given.