Direct inversion of the apparent complex‐resistivity spectrum

J. Xiang, N. B. Jones, D. Cheng, F. S. Schlindwein
2001 Geophysics  
Cole-Cole model parameters are widely used to interpret electrical geophysical methods and are obtained by inverting the induced polarization (IP) spectrum. This paper presents a direct inversion method for parameter estimation based on multifold least-squares estimation. Two algorithms are described that provide optimal parameter estimation in the least-squares sense. Simulations demonstrate that both algorithms can provide direct apparent spectral parameter inversion for complex resistivity
more » ... mplex resistivity data. Moreover, the second algorithm is robust under reasonably high noise.
doi:10.1190/1.1487085 fatcat:ijswbuzwgbfvllwwr3wd73ly7m