eprintid: 4928
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/49/28
datestamp: 2023-11-09 16:16:38
lastmod: 2023-11-09 16:16:38
status_changed: 2023-11-09 15:59:56
type: conference_item
metadata_visibility: show
creators_name: Hussain, N.
creators_name: Karsiti, M.N.
creators_name: Yahya, N.
creators_name: Jeoti, V.
title: Wavelet optimized finite difference simulation for marine CSEM geophysical survey
ispublished: pub
keywords: Costs; Functions; Geological surveys; Geophysics; Multiresolution analysis; Structural geology, Computational costs; Controlled source electromagnetic (CSEM); Daubechies; Finite difference simulations; Geophysical modeling; Geophysical surveys; marine CSEM; Wavelet basis functions, Numerical methods
note: cited By 1; Conference of 2014 5th International Conference on Intelligent and Advanced Systems, ICIAS 2014 ; Conference Date: 3 June 2014 Through 5 June 2014; Conference Code:107042
abstract: Survey data of marine controlled source electromagnetic (CSEM) geophysical surveys is not able to proceed far without numerical modeling. Finite Difference (FD) and Finite element (FE) numerical methods are the most used techniques in geophysical modeling. These methods are reliable for complex structural media; however the computational cost is very high. The computational cost, accuracy and efficiency are reliant on sophisticated mesh structure. This paper discusses the orthogonal wavelet basis functions that give a natural framework to adapt spatial grids to localize the solution in spatial and time domain. Modeling for proper mesh structure is achieved by using wavelet basis functions called wavelet optimized finite difference (WOFD) method. In WOFD method, wavelet transform is used to determine where to coarsen/refine the grid. As a resultant, solution region will become with irregular grid point. This method will add grid points where solution is erratic and sparse where solution is smooth. Now the solution can be obtained with better accuracy and less computational cost by using finite number of terms. The efficiency of this method is assessed in terms of accuracy; computational cost and number of mesh grids for different 1D heterogeneous media. WOFD method provides new flexible numerical tool for marine CSEM geophysical modeling as discretization to local media properties. This flexibility is important and could be invaluable when the solution region is very complex. © 2014 IEEE.
date: 2014
publisher: IEEE Computer Society
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906346381&doi=10.1109%2fICIAS.2014.6869477&partnerID=40&md5=654375cea2f76dbb6b562ec3fc0684dd
id_number: 10.1109/ICIAS.2014.6869477
full_text_status: none
publication: 2014 5th International Conference on Intelligent and Advanced Systems: Technological Convergence for Sustainable Future, ICIAS 2014 - Proceedings
place_of_pub: Kuala Lumpur
refereed: TRUE
isbn: 9781479946549
citation:   Hussain, N. and Karsiti, M.N. and Yahya, N. and Jeoti, V.  (2014) Wavelet optimized finite difference simulation for marine CSEM geophysical survey.  In: UNSPECIFIED.