On: “Recent Advances and Applications in Complex Resistivity Measurements,” by K. L. Zonge and J. C. Wynn (GEOPHYSICS, Oct. 1975, p. 851–864)

Geophysics ◽  
1977 ◽  
Vol 42 (1) ◽  
pp. 120-121 ◽  
Author(s):  
P. H. Nelson ◽  
G. D. Van Voorhis

In presenting a variety of induced polarization spectral data, Zonge and Wynn refer to a paper published earlier by us (Van Voorhis et al., 1973) which deals with the same topic. We feel Zonge and Wynn have misrepresented our measuring techniques, data, and conclusions in their references to our paper. Our principal objections center on three statements by the authors.

Geophysics ◽  
1977 ◽  
Vol 42 (1) ◽  
pp. 121-123
Author(s):  
K. L. Zonge ◽  
J. C. Wynn

The main objectives of “Recent Advances and Applications in Complex Resistivity Measurements” were to demonstrate the utility of making spectral measurements in standard field surveys and to show that rocks have characteristic signatures which do not conform to the constant phase model advocated by Nelson and Van Voorhis. We can understand the questions arising out of the relative inaccuracy statement.


2017 ◽  
Vol 105 ◽  
pp. 51-64 ◽  
Author(s):  
Charles L. Bérubé ◽  
Michel Chouteau ◽  
Pejman Shamsipour ◽  
Randolph J. Enkin ◽  
Gema R. Olivo

Geophysics ◽  
2021 ◽  
pp. 1-35
Author(s):  
Siming He ◽  
Jian Guan ◽  
Yi Wang ◽  
Xiu Ji ◽  
Hui Wang

In electrical exploration techniques, an effective suppression method for Gaussian and impulsive random noise in spread spectrum induced polarization (SSIP) continues to be challenging for conventional denoising methods. Remnant noise influences the complex resistivity spectrum and damages the subsequent interpretation of geophysical surveys. We present a hybrid method based on a correlation function and complex resistivity, which introduces the correlation analyses between the transmitting source, the measured potential, and the injected current signal. According to the analyses, reliable results for complex resistivity spectra can be calculated, which can be further used for noise suppression. We apply the hybrid method to both numerical and field experiments to process measured SSIP data. Simulation tests show that the hybrid method not only suppresses the two types of noise but also improves the relative error of the complex resistivity spectrum. Field data processing shows that the hybrid method can minimize the standard deviation of the data and possess a greater ability to distinguish adjacent objects, which can improve the reliability of the data in subsequent processing and interpretation.


2016 ◽  
Author(s):  
Juan Chen ◽  
Tao Huang ◽  
Gang Yu ◽  
Zhanxiang He ◽  
Xuben Wang ◽  
...  

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