Uncertainty and resolution analysis of 2D and 3D inversion models computed from geophysical electromagnetic data

Z Ren, T Kalscheuer - Surveys in Geophysics, 2020 - Springer
A meaningful solution to an inversion problem should be composed of the preferred
inversion model and its uncertainty and resolution estimates. The model uncertainty …

[HTML][HTML] Lithosphere structure and its implications for the metallogenesis of the Nanling Range, South China: Constraints from 3-D magnetotelluric imaging

Y Yin, S Jin, W Wei, Q Lü, G Ye, L Zhang, H Dong… - Ore Geology …, 2021 - Elsevier
We have obtained a lithospheric electrical resistivity model of the Nanling Range through 3-
D inversion of magnetotelluric data from 118 sites comprising an array covering this …

Two-dimensional magnetotelluric modelling of ore deposits: Improvements in model constraints by inclusion of borehole measurements

T Kalscheuer, N Juhojuntti, K Vaittinen - Surveys in Geophysics, 2018 - Springer
A combination of magnetotelluric (MT) measurements on the surface and in boreholes
(without metal casing) can be expected to enhance resolution and reduce the ambiguity in …

[HTML][HTML] Towards an understanding of mineral systems–Contributions from magnetotelluric data from the Fennoscandian Shield in northern Sweden

R Vadoodi, TM Rasmussen, M Smirnov, T Bauer - Tectonophysics, 2021 - Elsevier
Magnetotelluric data from 104 new stations in northern Sweden together with previously
available MaSca project data are analysed with respect to a hypothesised genetic relation …

3-D magnetotelluric inversion and application using the edge-based finite element with hexahedral mesh

J Xie, H Cai, X Hu, Z Long, S Xu, C Fu… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Three-dimensional (3-D) inversion technique has become an important and practical
approach for magnetotelluric (MT) data interpretation. In this article, we developed a 3-D …

Two‐dimensional magnetotelluric inversion using reflection seismic data as constraints and application in the COSC project

P Yan, T Kalscheuer, P Hedin… - Geophysical …, 2017 - Wiley Online Library
We present a novel 2‐D magnetotelluric (MT) inversion scheme, in which the local weights
of the regularizing smoothness constraints are based on the envelope attribute of a …

Deep massive sulphide exploration using 2D and 3D geoelectrical and induced polarization data in Skellefte mining district, northern Sweden

S Tavakoli, TE Bauer, TM Rasmussen… - Geophysical …, 2016 - earthdoc.org
Geoelectrical and induced polarization data from measurements along three profiles and
from one 3D survey are acquired and processed in the central Skellefte District, northern …

Inversion for magnetotelluric data using the particle swarm optimization and regularized least squares

Y Cui, L Zhang, X Zhu, J Liu, Z Guo - Journal of Applied Geophysics, 2020 - Elsevier
The major disadvantage of using traditional linear or quasi-linear methods to perform
magnetotelluric data inversion is that these methods heavily depend on the initial models. If …

Multiscale 3-D imaging of the crustal electrical structure beneath the Caosiyao porphyry Mo deposit, North China

L Xu, S Jin, Y Yin, W Wei, G Ye, H Dong… - Geophysical Journal …, 2022 - academic.oup.com
We proposed a stepwise procedure to obtain a multiscale 3-D resistivity model beneath the
Caosiyao porphyry Mo deposit. Due to the joint inversion of data collected from 302 audio …

Resolution and sensitivity of boat-towed RMT data to delineate fracture zones–example of the Stockholm bypass multi-lane tunnel

S Mehta, M Bastani, A Malehmir… - Journal of Applied …, 2017 - Elsevier
The resolution and sensitivity of water-borne boat-towed multi-frequency radio-
magnetotelluric (RMT) data for delineating zones of weaknesses in bedrock are examined in …