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the global models of the Earth's gravity field, topography, ice, and bathymetry have
a relatively high resolution and accuracy. Similar to uncertainties in the input gravity
data, the errors in the Moho density contrast propagate proportionally to the Moho
depth errors. In addition to these uncertainties, we disregarded the mantle density
heterogeneities and the core-mantle geometry. The effect of mantle density structure
on the gravity field and the Moho geometry is not yet sufficiently known, because
of the absence of a reliable mantle density model.
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