Three-dimensional conjugate gradient inversion of magnetotelluric full information data
Lin Chang-Hong1,2,3, Tan Han-Dong1,2,3, and Tong Tuo1,2,3
1. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing, 100083, China.
2. Key Laboratory of Geo-detection (China University of Geosciences), Ministry of Education, Beijing, 100083, China.
3. School of Geophysics and Information Technology, China University of Geosciences, Beijing, 100083, China.
Abstract Based on the analysis of impedance tensor data, tipper data, and the conjugate gradient algorithm, we develop a three-dimensional (3D) conjugate gradient algorithm for inverting magnetotelluric full information data determined from fi ve electric and magnetic field components and discuss the method to use the full information data for quantitative interpretation of 3D inversion results. Results from the 3D inversion of synthetic data indicate that the results from inverting full information data which combine the impedance tensor and tipper data are better than results from inverting only the impedance tensor data (or tipper data) in improving resolution and reliability. The synthetic examples also demonstrate the validity and stability of this 3D inversion algorithm.
This work is jointly supported by the National Hi-tech Research and Development Program of China (863 Program) (No. 2007AA09Z310), National Natural Science Foundation of China (Grant No.40774029, 40374024), the Fundamental Research Funds for the Central Universities (Grant No. 2010ZY53), and the Program for New Century Excellent Talents in University (NCET).
Cite this article:
LIN Chang-Hong,TAN Han-Dong,TONG Tuo. Three-dimensional conjugate gradient inversion of magnetotelluric full information data[J]. APPLIED GEOPHYSICS, 2011, 8(1): 1-10.
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