Three methods were studied to interpret a magnetic anomaly in Bulgaria. The homogeneity of potential fields serves as the theoretical basis of most of the semiautomatic and automatic methods used in processing large magnetic and gravity datasets - for example, Euler deconvolution, the wavelet transform, and the similarity transform methods. Comparing three automatic methods that could be applied to magnetic and gravity surveys has helped determine the best methodology for interpreting a vertical component magnetic data grid from the Bolyarovo-Voden anomalous zone in Bulgaria. The three methods compared were magnetic and gravity sounding based on the differential similarity transform (MaGSoundDST), magnetic and gravity sounding based on the finite difference similarity transform (MaGSoundFDST), and Euler deconvolution based on the differential similarity transform (DST Euler) algorithm.
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