Austhai Geophysical Consultants (Thailand) Co., Lt

Cole-Cole Inversion of Telluric Cancelled IP Data

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SUMMARY:


Induced Polarisation, like all geophysical methods, suffers from the presence of noise. Of the many sources of noise, tellurics can often be one of the most problematic to remove.


An effective method of removing telluric noise has been trialed on dipole-dipole data acquired by MIM Exploration’s proprietary MIMDAS system, during routine surveying in NE South Australia. The method
utilises impedances determined from previously acquired MT data to estimate the natural field component of the measured signal.


This paper presents results obtained thus far, displaying significant improvement in data quality when compared to the uncorrected data. The benefits of increased signal to noise and higher confidence in Cole-Cole parameter estimation are outlined.

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