【摘要】 论述了某些条件下地球介质呈现出明显的电导率各向异性的情形，研讨了均匀水平层状对称各向异性介质大地电磁正、反演有关问题，试验表明所给出的反演方法是适用和有效的．给出了利用大地电磁资料了解地壳应力状态及研究膨胀各向异性地震前兆的一种途径．更多还原

【Abstract】 The obvious conductivity anisotropy of:the Earth’s medium in some regions was demonstrated.The problems about MT simulation and inversion for symmetrically anisotropic layered medium were studied, it was shown that the inverse method give by us was effective and applicable.A new way to understand the stress state in the Earth’s crust and to study EDA earthquake precursor nsing MT data inversion was given.更多还原