【摘要】 本文讨论了可控源音频大地电磁测深法(CSAMT)的场区特征,并对现有的非远场改正方法进行了理论分析和模型验证,指出目前所有的非远场改正方法均有缺陷,可能导致错误的解释。应用笔者近期开发的CSAMT一维反演程序,可以直接对观测结果进行解释。还提出了一种近似的二维解释方法。更多还原

【Abstract】 Characteristics of fields in various zones at different distances from the source in CSAMT surveys are discussed in this paper,With the focal point standing out on nera-field data correction,Theoretical analysis and model verification conclude that themethods now available for near-field CSAMT data correction are not competent for this purpose due to their own shortcomings,and are also possible to bring about an interpretation inconsistent with the practocal circumstaces.However,ourrecently developed1—D CSAMT Inversion method can be directly used in this respect.In addition,here we put forward an approximate methodwhich is rather sffective for 2—D CSAMTdata interpretation.更多还原