Large-scale 3D inversion of airborne electromagnetic data based on the hybrid IE-FE method and the moving sensitivity domain approach

2015 ◽  
Author(s):  
Michael S. Zhdanov ◽  
Leif H. Cox ◽  
Masashi Endo
Keyword(s):  
Large Scale ◽  
3D Inversion ◽  
Fe Method ◽  
Electromagnetic Data ◽  
Airborne Electromagnetic ◽  
Airborne Electromagnetic Data

scholarly journals 3D inversion of airborne electromagnetic data using a moving footprint

2010 ◽  
Vol 41 (4) ◽  
pp. 250-259 ◽  
Author(s):  
Leif H. Cox ◽  
Glenn A. Wilson ◽  
Michael S. Zhdanov
Keyword(s):  
3D Inversion ◽  
Electromagnetic Data ◽  
Airborne Electromagnetic ◽  
Airborne Electromagnetic Data

scholarly journals 2.5D Inversion Algorithm of Frequency-Domain Airborne Electromagnetics with Topography

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Jianjun Xi ◽  
Wenben Li
Keyword(s):  
Frequency Domain ◽  
Large Scale ◽  
Jacobian Matrix ◽  
Sparse Matrix ◽  
Inversion Algorithm ◽  
Linear System Of Equations ◽  
Electromagnetic Data ◽  
Electric And Magnetic Fields ◽  
Airborne Electromagnetic ◽  
Airborne Electromagnetic Data

We presented a 2.5D inversion algorithm with topography for frequency-domain airborne electromagnetic data. The forward modeling is based on edge finite element method and uses the irregular hexahedron to adapt the topography. The electric and magnetic fields are split into primary (background) and secondary (scattered) field to eliminate the source singularity. For the multisources of frequency-domain airborne electromagnetic method, we use the large-scale sparse matrix parallel shared memory direct solver PARDISO to solve the linear system of equations efficiently. The inversion algorithm is based on Gauss-Newton method, which has the efficient convergence rate. The Jacobian matrix is calculated by “adjoint forward modelling” efficiently. The synthetic inversion examples indicated that our proposed method is correct and effective. Furthermore, ignoring the topography effect can lead to incorrect results and interpretations.

Combined 3D Inversion of Ground and Airborne Electromagnetic Data over Iron Ore in Kiruna

2019 ◽  
Author(s):  
M. Smirnova ◽  
N. Juhojuntti ◽  
M. Becken ◽  
M. Smirnov ◽  
P. Yogeshwar ◽  
...  
Keyword(s):  
Iron Ore ◽  
3D Inversion ◽  
Electromagnetic Data ◽  
Airborne Electromagnetic ◽  
Airborne Electromagnetic Data
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