Power spectrum of DEMs

MartinVogele
MartinVogele Posts: 4
in Geosoft
Dear community,

is there a way to calculate the power spectrum of a 2D grid/1D profile in order to get an overview of the wavelength Distribution, e.g. in the topography?
I am aware of the Radially Averaged Power Spectrum Option in MAGMAP for depth-to-basement estimates but this does not help here.

Cheers,
Martin
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  • BeckyBodger
    BeckyBodger Posts: 338 mod
    Hi @MartinVögele there are two other power spectrum calculations:
    1. From the 1D-FFT menu click Power Spectrum to calculate the log power spectrum of a channel from a database.
    2. From MAGMAP, below the Radial Average Power Spectrum tool there is a 2D Power Spectrum option.
    Not sure if they give you the wavelength distribution that you are after, but if you have the Geophysics extension or MAGMAP it may be worth a test.
    Community Manager

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