一维层状介质大地电磁模拟退火反演法

大地电磁模拟退火反演法是一种最优化的非线性反演方法，与传统的线性反演方法相比该方法具有：（１）不依赖于初始模型的选择；（２）能寻找全局最小点而不陷入局部极小；（３）在反演过程中不用计算雅可比偏数矩阵等优点；通过对各种类型的大地电磁测深理论曲线试算，结果表明模拟退火法能准确地自动反演地电参数（地层电阻率，厚度）最后对实际资料进行了处理，取得了较好的效果。

ONE DIMENSIONAL MAGNETOTELLURIC SOUNDING INVERSION USING SIMULATED ANNEALING

The magnetotelluric sounding(MT) simulated annealing inversion is a nonlinear and global optimization method. The main advantages of simulated annealing are: (1) inversion results not depending on the starting model; (2) reaching the global minimum; (3) not calculating the derivative matrix. This method has been applied into 1D magnetotelluric sounding data interpretation. The results of synthetic and field data indicate that simulated annealing is very powerful in the interpretation of 1D MT data.