计算视复电阻率的新的近似公式

本文推导并评价了一个新的计算视复电阻率的近似公式,其视振幅表达式为|ρ_s（ω）|≈ρ_s（ω）|_{ρs（ω）=ρs（ω）|},视相位表达式为φ_s（ω）≈sum from i=1 to n（B_i（ω）φ_i（ω））,这里B_i（ω）是按各介质复电阻率振幅计算的稀释系数。此近似公式比迄今为止已发表过的同类近似公式都精确,可在频率域激电法数值模拟计算视复电阻率时应用。

A New Approximation for Apparent Complex Resistivities

A new approximate expression for apparent complex resistivity for composite polarizable media is derived and evaluated. The expression for apparent amplitude is|ρ_s（ω）|≈ρ_s（ω）|_{ρs（ω）=ρs（ω）|} and for apparent phase , whereBi（ω） is the dilution factor calculated from the moduli of intrinsic complex resistivities. The approximation is more accurate than those so far published and should be useful for the computation of apparent complex resistivities in numerical modeling for frequency domain IP.