Fourier transform of large scale aeromagnetic field using a modified version of fast Fourier transform |
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| Authors: | Prabhakar S Naidu |
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| Institution: | (1) Department of Physics, Dalhousie University, Halifax, Nova Scotia, Canada;(2) Present address: Department of electrical communication Engincering, Indian Institute of Science, Bangalore-12, India |
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| Abstract: | Summary
Cooley andTukey's fast Fourier transform algorithm for two dimensional complex data has been modified so as to reduce the storage space and computation time to half. The modified version has enabled us to Fourier transform aeromagnetic field over twice the area that could be covered by the original method. From the Fourier transform we computed radial spectrum, which could be approximated by three straight line segments whose slopes are related to the depths of the various magnetic layers. The computed depths are: 1090', 2600', and 7200'. |
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