Why gravity corrections for latitude/free-air/Bouguer/terrain are obsolete and the spatial filtered observed gravity must be used instead
Link: https://www.linkedin.com/pulse/why-gravity-correction-latitudefree-airbouguerterrain-pechnikov/ Traditional geophysics uses a set of corrections (reduction) for the observed gravity measurements (https://en.wikipedia.org/wiki/Bouguer_anomaly). But what they mean? In terms of common physics these are just products of spatial bandpass filtering. However geophysics still based on these rough coefficients instead of using spatial bandpass filters. That’s really nonsense when these common tables of coefficients applied to high-resolution data observations! As example we have subcentimeter accuracy and ~100m spatial resolution of altimeter satellite measurements to calculate gravity on the sea surface level. In fact the table-based corrections are only tribute to traditions and these are absolutely useless. Let’s use spatial filters to extract the anomalies of all spatial scales.
