A comparison of robust polynomial fitting, global geopotential model and spectral analysis for regional–residual gravity field separation in the Doñana National Park (Spain)

A comparison of three methods—robust polynomial fitting, the EGM2008 global geopotential model, and spectral analysis—revealed that the EGM2008 model is a highly effective tool for separating regional and residual gravity fields in Doñana National Park. The study, conducted using high-precision gravimetric data, identified correlations between residual gravity anomalies and geological features, suggesting potential refinements to existing geological boundary maps. This approach offers improved accuracy for geophysical modeling in protected areas with complex geological structures.

Martín, A., Núñez, M. A., Gili, J. A., & Anquela, A. B. (2011). A comparison of robust polynomial fitting, global geopotential model and spectral analysis for regional–residual gravity field separation in the Doñana National Park (Spain). Journal of Applied Geophysics, 75(2), 327–337. https://doi.org/10.1016/j.jappgeo.2011.06.037