Integrated Spatial and Spectrum Method for Geochemical Anomaly Separation

摘要: A new approach for separating geochemical anomalies from background has been developedon the basis of integration spatial and spectrum analysis. map generated geochemicaldata can be transformed into a frequency domain in which concentration-area fractalmethod applied to distinguish patterns on power-spectrum distribution.Distinct classes generated, such as lower, intermediate, high valuesapproximately corresponding background, anomalies, noises values ina domain. An irregular filter then constructed these distinct withthe related low- high-power-spectrum being removed.The image converted back with show which,after removal noise, mainly reflect residual area that representsanomalous or atypical patterns. This method is demonstrated using case studyof soil data Mudik area, island Sumatra, Indonesia. The resultsobtained this comparison those obtained other methods have shownthat newly developed separate overlapping populations without singlecutoff value.