Inversion of capacitively coupled resistivity (line-antenna) measurements
Inversion of capacitively coupled resistivity (line-antenna) measurements
复制标题
电容耦合电阻率（线天线）测量的反演
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Yu
中科院分区：
文献类型：
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作者：
Q. Niu;Yu
摘要 使用线天线（或电极）的电容耦合电阻率方法已广泛应用于各种应用。为了解决相关的反演问题，二维表面电阻率测量的一般做法（即间接反演方法）是用等效的点电极阵列来近似线电极阵列，因此现有的直流电阻率反演程序仍然可以使用。基于本研究的实验证据，即具有相似灵敏度 (1D) 曲线的两个电阻率阵列可提供可比较的测量结果，我们通过最小化线电极阵列和点电极阵列之间在调查深度差异 (DID) 方面的灵敏度 (1D) 差异来优化等效点电极阵列。最佳等效点电极阵列的偶极子长度可以通过仅考虑偶极子距离最短的阵列来确定。对于偶极子长度为 2.5、5 和 10 的线电极阵列...
ABSTRACTThe capacitively coupled resistivity method using line antennas (or electrodes) has been widely applied for various kinds of applications. To solve the associated inversion problem, the general practice (i.e., the indirect inversion method) for 2D surface resistivity surveys is to approximate the line-electrode array by an equivalent point-electrode array, so that the existing direct current resistivity inversion programs can still be used. Based on the experimental evidence from this study that two resistivity arrays with a similar sensitivity (1D) curve offers comparable measurement, we optimized the equivalent point-electrode array by minimizing the sensitivity (1D) difference between the line- and point-electrode arrays in terms of the depth of investigation difference (DID). The dipole length of the optimal equivalent point-electrode array can be determined by considering only the array with the shortest dipole distance. For the line-electrode arrays with the dipole lengths of 2.5, 5, and 10 ...