I am trying to filter my Bouguer anomaly data to remove the short wavelength features. I have created a lowpass filter to achieve this, but I am wondering how I can more objectively choose my cutoff wavelength(s). This filtering is done in the Fourier domain.
The filtering technique is similar to what is described in this paper.
Currently, I am just very loosely basing the wavelengths off of my elastic plate thickness, and comparing (via observation and RMSE) the resulting Bouguer anomaly to my predicted model.