L04_GravAnalysisExamples-page7

L04_GravAnalysisExamples-page7 - Spatial domain Subtracting...

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Applied Geophysics – Analysis and examples Wavelength filtering We have just applied two filters to our data: 1. Regional trend removal: high-pass filter 2. Noise filter: low-pass filter i.e. we have band-passed our data to isolate/enhance gravity anomalies with the wavelength of interest Î Band-pass filter Applied Geophysics – Analysis and examples
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Unformatted text preview: Spatial domain Subtracting averages 1. at each data point draw a circle 2. average the gravity observations around circumference 3. subtract mean from value at center point Recovers anomalies with a wavelength close to the diameter of the circle Wavelength filtering...
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