一些复杂条件下视电阻率和视极化率异常数值解的规律

用点源二维介质有限元正演数值模拟法,以直立有限延深板状体为对象,研究了中梯、二极、三极、偶极装置在较复杂地电条件下视电阻率和视极化率异常数值解的规律:(1)板体导电性对异常的影响;(2)地形起伏对异常的影响;(3)覆盖层导电性对异常的影响。

REGULARITIES OF NUMERICAL SOLUTIONS FOR ANOMALIES OF APPARENT RESISTIVITY AND APPARENT POLARIZABILITY UNDER SOME COMPLEX CONDITIONS

Using finite element forward numerical simulation method of point source two-dimensional media, and taking the vertical finitely-extended plate as the subject, the author has investigated the following regularities of numerical solutions for anomalies of apparent resistivity and apparent polarizablity with such devices as intermediate gradient, two-array, three-array and dipole-array under rather complex telluric conditions; (1) the effect of electric conductivity of the plate on the anomaly; (2) the effect of topography on the anomaly; (3) the electric conductivity of the overburden on the anonaly.