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.

  • $\begingroup$ I am now wondering if it would make sense to instead base the filter wavelength off of the assumed crustal thickness instead of Te. $\endgroup$ – Jet Yeti May 4 at 4:21
  • $\begingroup$ if this is about an electronic bandpass filter you might try to ask this question in electronics.stackexchange.com $\endgroup$ – trond hansen May 4 at 6:07
  • $\begingroup$ No, this is in regard to applying a digital filter to remove high frequency (short wavelength) gravitational variations. Since my issue has more to do with choosing the most appropriate wavelengths to filter out, not the implementation, I thought the Earth Science community would have more knowledge than say DSP or electronics. $\endgroup$ – Jet Yeti May 4 at 7:23

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