Interpretation of magnetic data using an enhanced local wavenumber (ELW) method

Ahmed Salem, Dhananjay Ravat, Richard Smith, Keisuke Ushijima

Research output: Contribution to journalArticlepeer-review

92 Scopus citations


This paper presents an enhancement of the local-wavenumber method (named ELW for "enhanced local wavenumber") for interpretation of profile magnetic data. This method uses the traditional and phase-rotated local wavenumbers to produce a linear equation as a function of the model parameters. The equation can be solved to determine the horizontal location and depth of a 2D magnetic body without specifying a priori information about the nature of the sources. Using the obtained source-location parameters, the nature of the source can then be inferred. The method was tested using theoretical simulations with random noise over a dike body. It was able to provide both the location and an index characterizing the nature of the source body. The practical utility of the method is demonstrated using field examples over dikelike bodies from Canada and Egypt.

Original languageEnglish
Pages (from-to)L7-L12
Issue number2
StatePublished - 2005

ASJC Scopus subject areas

  • Geochemistry and Petrology


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