IP interpretation in environmental investigations
IP interpretation in environmental investigations
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DOI：
10.1190/1.1451353
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发表时间：
2000
期刊：
影响因子：
3.3
通讯作者：
L. Slater;D. Lesmes
中科院分区：
文献类型：
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作者：
L. Slater;D. Lesmes
岩石和土壤的激发极化（IP）响应是岩性和流体电导率的函数。激电测量对岩石和土壤的低频电容特性很敏感，这些电容特性由在颗粒-流体界面处操作的扩散极化机制控制。激电解释通常是根据常规场激电参数：充电率、百分比频率效应和相位角。这些参数取决于表面极化机制和体（体积）传导机制。因此，他们提供了一个贫穷的量化的表面极化过程的兴趣领域的电化学家。量化表面极化幅度的参数是归一化的充电率，其被定义为充电率除以电阻率幅度。该参数与复电阻率法中测量的正交电导率成比例。对于非金属矿物，正交电导率和归一化电导率的计算方法是可行的。
The induced polarization (IP) response of rocks and soils is a function of lithology and fluid conductivity. IP measurements are sensitive to the low‐frequency capacitive properties of rocks and soils, which are controlled by diffusion polarization mechanisms operating at the grain‐fluid interface. IP interpretation typically is in terms of the conventional field IP parameters: chargeability, percentage frequency effect, and phase angle. These parameters are dependent upon both surface polarization mechanisms and bulk (volumetric) conduction mechanisms. Consequently, they afford a poor quantification of surface polarization processes of interest to the field geophysicist. A parameter that quantifies the magnitude of surface polarization is the normalized chargeability, defined as the chargeability divided by the resistivity magnitude. This parameter is proportional to the quadrature conductivity measured in the complex resistivity method. For nonmetallic minerals, the quadrature conductivity and normalize...