Journal Title
Title of Journal: J Earth Sci
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Abbravation: Journal of Earth Science
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Publisher
China University of Geosciences
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Authors: Changhong Lin Handong Tan Tuo Tong
Publish Date: 2011/05/25
Volume: 22, Issue: 3, Pages: 386-395
Abstract
We developed a threedimensional 3D conjugate gradient inversion algorithm for inverting magnetotelluric impedance tensor measurements In order to show the importance of including diagonal components of magnetotelluric impedance tensor in 3D inversion synthetic data were inverted using the 3D conjugate gradient inversion and the inversion results were compared and analyzed The results from the 3D inversion of synthetic data indicate that both the offdiagonal and the diagonal components are required in inversions to obtain better inversion results when there are no enough data sites to recover the target resistivity structure These examples show that lots of information about 3D structure is also contained in the diagonal components as a result diagonal components should be included in 3D inversions The inversion algorithm was also used to invert the impedance tensor data acquired in the Kayabe area in Japan Inversions with the synthetic and real data demonstrated the validity and practicability of the inversion algorithmThis study was jointly supported by the National Natural Science Foundation of China Nos 40774029 41004028 the Special Fund for Basic Scientific Research of Central Colleges No 2010ZY53 and the Program for New Century Excellent Talents in University NCET
Keywords:
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