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在积分方程法的大地电磁三维正演模拟中引入Cole-Cole模型研究激电效应特征,对均匀半空间中存在极化体时的三维大地电磁测深响应进行了理论计算,分析了极化参数的影响规律。结果表明:激电效应使观测视电阻率值变低;地下高阻极化体比低阻极化体的激电效应强,特别是极化率大的高阻极化体对大地电磁响应影响大,使观测结果出现假异常。
The Cole-Cole model is introduced to simulate the electromagnetic effect in the geomagnetic three-dimensional forward modeling of the integral equation method, and the theoretical calculation of the three-dimensional geomagnetic sounding response in the presence of polarizers in a homogeneous half-space is carried out. The polarization parameters The law of influence. The results show that the apparent resistivity of the high resistivity polarizer is lower than that of the low resistive polarizer, especially the high polarizer high resistivity polarizer affects the electromagnetic response of the earth Large, so that the observation results fake abnormal.