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Degree: M. Sc.

DegreeYear: 2002

Institute: University of Calgary (Canada)

Adviser: Michael G. Sideris.

The mapping phases of altimetric satellites (Geodetic Missions) offer a vast amount of sea surface height data and provide high-accuracy and high-resolution gravity field information. In this thesis, altimetry-derived gravity anomalies were used in a least squares collocation (LSC) method to improve the estimation of the bottom ocean topography and its gravimetric response. Two-and three-layer models were developed and combined solutions with shipborne depth soundings were implemented. Compared to global bathymetry models, the newly derived ones manage to provide smoother data by 15-25% when taken into account through a residual terrain modeling (RTM) reduction in a remove-compute-restore procedure for gravity field modeling.