TITLE:
The Effects of Negative Values of Apparent Resistivity in TEM Surveys
AUTHORS:
Cassiano Antonio Bortolozo, Julian David Realpe Campaña, Marco Antonio Couto Junior, Jorge Luis Porsani, Fernando Acácio Monteiro dos Santos
KEYWORDS:
Transient Electromagnetic (TEM), Apparent Resistivity, Negative Values
JOURNAL NAME:
International Journal of Geosciences,
Vol.7 No.10,
October
27,
2016
ABSTRACT: The calculation of
apparent resistivity in electrical methods is relatively simple and
consolidated in the literature. Furthermore, in the case of DC methods, the
apparent resistivity values are for the most part, intuitive and enable an
initial interpretation of the results. On the other hand, in TEM method the
apparent resistivity values are not very intuitive and interpretation based
only on the apparent resistivity values cannot be done reasonably. In this way,
this paper presents a discussion about the reasons and effects of the negatives
values of apparent resistivity in TEM soundings. The main objective of this
paper is to clarify the meanings of these negatives values and the possible effects
in TEM inversion.