CR1Dmod: A Matlab program to model 1D complex resistivity effects in electrical and electromagnetic surveys

Détails

ID Serval
serval:BIB_EF7472051C7B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
CR1Dmod: A Matlab program to model 1D complex resistivity effects in electrical and electromagnetic surveys
Périodique
Computers & Geosciences
Auteur(s)
Ingeman-Nielsen T., Baumgartner F.
ISSN-L
0098-3004
Statut éditorial
Publié
Date de publication
2006
Peer-reviewed
Oui
Volume
32
Pages
1411-1419
Langue
anglais
Notes
Ingeman-Nielsen2006
Résumé
We have constructed a forward modelling code in Matlab, capable of
handling several commonly used electrical and electromagnetic methods
in a 1D environment. We review the implemented electromagnetic field
equations for grounded wires, frequency and transient soundings and
present new solutions in the case of a non-magnetic first layer.
The CR1Dmod code evaluates the Hankel transforms occurring in the
field equations using either the Fast Hankel Transform based on digital
filter theory, or a numerical integration scheme applied between
the zeros of the Bessel function. A graphical user interface allows
easy construction of 1D models and control of the parameters. Modelling
results are in agreement with other authors, but the time of computation
is less efficient than other available codes. Nevertheless, the CR1Dmod
routine handles complex resistivities and offers solutions based
on the full EM-equations as well as the quasi-static approximation.
Thus, modelling of effects based on changes in the magnetic permeability
and the permittivity is also possible.
Mots-clé
complex resistivity, forward modelling, terrestrial resistivity, EM, coupling, geophysical prospecting
Création de la notice
25/11/2013 18:31
Dernière modification de la notice
03/03/2018 22:34
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