大地电磁测深法的各种应用,是与不同频段信息的正确提取、分析和解释分不开的。随着这种方法的迅速发展,现已生产出各种形式的仪器记录装置,并相继提出一系列资料处理方法与解释方法。很显然,众多的应用,其成功的关键主要取决于资料解释的质量。 .在提出大地电磁测深法的初期,都是把地球假定为电性均匀的半空间或水平层状各向同性结构,因此使用的是一维模型的解释方法。在区域构造近似水平、而且横向变化缓慢的地区,通过在各个 MT 测点,局部地用水平层状地球模型自动拟合观测资料,并且沿资料剖面, Various applications of the MT method are inseparable from the correct extraction, analysis and interpretation of information in different frequency bands. With the rapid development of this method, various types of instrument recording devices have been produced and a series of data processing methods and interpretation methods have been put forward one after another. Obviously, for many applications, the key to its success depends primarily on the quality of data interpretation. In the early stage of the MTD method, the Earth was assumed to be an electronically homogeneous half-space or a horizontal layered isotropic structure, so a one-dimensional model interpretation method was used. In the area where the regional structure is approximate and the lateral variation is slow, the observed data are automatically fitted locally by the horizontal layered earth model at each MT measuring point, and along the data section,