3D simulation of magnetotelluric data: simulation using eigenmode approach - Softcover

Niwas, Sri; Kumar, Krishna

Softcover

ISBN 10: 3848405040 ISBN 13: 9783848405046

Publisher: LAP LAMBERT Academic Publishing, 2012

Synopsis

A finite difference algorithm for 3D modeling of magnetotelluric data is presented. The algorithm, MT_3D_EA, (Magnetotelluric 3-Dimensional Eigenmode Approach) uses eigenmodes for solving the relevant partial differential equation wherein only a small subset of eigenvalues and corresponding eigenvectors are required to achieve satisfactory results. The requisite small subset (pre-specified number) of eigenmodes are obtained by using shift and invert implementation of Implicitly Restarted Arnoldi Method (IRAM). It is analyzed that only 10-15% smallest eigenvalues and corresponding eigenvectors are sufficient to obtain the acceptable solution. Using this approach one can find multi-frequency solution almost at the computational cost of single frequency solution. 3D results for synthetic models taken from COMMEMI project report and simulation results for simplified geoelectrical model of Garhwal Himalaya based on field data are presented as experiment design.

About this title

About the Author

Dr. Sri Niwas (b. 1946) joined IIT Roorkee in 1977,became full Professor in 1990, received prestigious Shanti Swarup Bhatnagar Prize of Government of India,elected Fellows of Indian Academy of Science,FASc , Indian National Science Academy, FNA, National Academy of Sciences,FNASc, published 100 research papers. He is an active member of SEG, USA.

Edition details

• Publisher: LAP LAMBERT Academic Publishing
• Publication date: 2012
• Language: English
• ISBN 10: 3848405040
• ISBN 13: 9783848405046
• Binding: Paperback
• Number of pages: 192