Alternative local wavenumber methods to estimate magnetic source parameters
Guoqing Ma 1 Lili Li 1 2
+ Author Affiliations
- Author Affiliations
1 College of Geoexploration Science and Technology, Jilin University, Changchun, 130021, China.
2 Corresponding author. Email: lilili815208@sina.com
Exploration Geophysics 44(4) 264-271 https://doi.org/10.1071/EG13010
Submitted: 28 January 2013 Accepted: 12 September 2013 Published: 23 October 2013
Abstract
Three alternative local wavenumber methods are proposed to estimate the depth and the nature (structural index) of the 2D magnetic source simultaneously using various combinations of different forms of the local wavenumbers to compute the source parameters without any prior information about the source. A clustering method is also provided to get more accurate results. The proposed local wavenumber methods are demonstrated on synthetic noise-free and noise-corrupted magnetic data, and they successfully estimate the location parameters and structural index of the causative sources. The actual application of the proposed methods is demonstrated on a magnetic anomaly from southern Illinois.
Key words: depth, magnetic, structural index.
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