基于广义等效激电模型的频谱特性分析
Chinese Journal of Engineering Geophysics(2017)
Abstract
在频率较低和忽略电磁效应的情况,将矿物中所含激电效应的颗粒等效为椭球体,利用广义等效理论,给出一种椭球极化广义等效激电(Generalized Effective Medium Theory of Induced Polarization)模型的频谱曲线计算方法.从矿物电磁感应与激发极化产生的总电场满足的积分方程出发,推导出椭球极化介质等效电阻率的表达式.最后构建不同形态的椭球体等效模型,定量分析了椭圆率、极化矿物颗粒百分含量、时间常数、以及延迟系数变化时对复电阻率频散特性的影响,为频谱激电测量提供更多有价值的参考.
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