Practical Methods for the Downward Continuation of Airborne Gravity Data in the Sea Area
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Abstract
Two practical downward continuation methods are proposed for the sea surveying areas inaccordance with their gravit y characteristics and available information addressing the uncertainty of downward continuation for airborne gravit y data.In the first methodthe continuation corrections are calculated by using the upward continuation of satellite gravit y data and in the other by using EGM2008gravit y field model.A satellite gravit y data settwo sea-borne gravit y data setsand an airborne gravit y data set are used as a case stud y to test the efficienc y of these new methods.
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