Towards Model Fusion in Geophysics: How to Estimate Accuracy of Different Models

One of the main objectives of geophysics is to determine the density at different depths and at different geographical locations. There exist several methods for estimating the density: e.g., we can use seismic data, or we can use gravity measurement. Each of the techniques for estimating the density has its own advantages and limitations: e.g., seismic measurements often lead to a more accurate value of density than gravity measurements, but seismic measurements mostly provide information about the areas above the Moho surface. It is desirable to combine ("fuse") the models obtained from different types of measurements into a single model that would combine the advantages of all of these models.