Master Thesis
Date
2024-03-15
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
ORCID
Type
Thesis
Degree Level
Masters
Abstract
With a given fixed array of electrodes, a very large number of four
electrode measurements can be made. However, most of the possible measurements
are not linearly independent, indicating that a smaller number
of measurements can be made in order to save time, and the results of
other measurements can be calculated later. In some cases, this calculation
process can amplify measurement errors and so a robust quality
control criterion is needed. In the past, it has been demonstrated that
pole-pole, pole-dipole and pseudo-pole-dipole data can be used as a basis
for calculating other measurements. In this study, we consider pseudopole-
pole datasets as a basis. We define a pseudo-pole-pole array as one
in which there is always a fixed current and potential reference electrode,
but these reference electrodes are not necessarily far from the rest of the
measurement array. We show that all four-electrode measurements can
be easily calculated from pseudo-pole-pole data in ways that are similar
to pole-pole data. We additionally show that good quality pseudosections
and inversion results can be recovered from transformed data from
pseudo-pole-pole data, especially for transformed data in configurations
similar to the Wenner-α array. We also show that independent normal
and reciprocal four electrode measurements can be calculated for each
four electrode array and the comparison of these can be used as a quality
control criterion.
Description
Keywords
Resistivity, Transformation
Citation
Degree
Master of Science (M.Sc.)
Department
Geological Sciences
Program
Geology