TITLE:
Occam Inversion of Transient Electromagnetic Data in a Layered Medium with Azimuthal Anisotropy
AUTHORS:
Wangwang Wang, Changhong Lin, Handong Tan, Honglei Liu
KEYWORDS:
Azimuthal Anisotropy, Layered Medium, Occam Inversion, Horizontalelectric Dipole, Transient Electromagnetic Data
JOURNAL NAME:
International Journal of Geosciences,
Vol.7 No.7,
July
19,
2016
ABSTRACT: In recent years, the
anisotropic study has become a hot topic in the field of electromagnetics.
Currently, inversion technologies of transient electromagnetic sounding data
are mainly based on the case of an isotropic medium. However, the actual
underground electrical structure tends to be complicated and anisotropic. It is
often found that the isotropic inversion technologies do not lead to good
results for field transient electromagnetic sounding data. We have developed an
algorithm for calculating the transient electromagnetic response in a layered
medium with azimuthal anisotropy. An occam inversion algorithm has also been
implemented to invert the transient electromagnetic data induced by a grounded
horizontal electric dipole in a layered medium with azimuthal anisotropy.
Synthetic examples demonstrate the stability and validity of the inversion
algorithm. Experimental results show different data for inverting have great
influence on the inversion results.