Build an in depth understanding of Earth's gravity field and its application to various aspects of Geomatics. Students learn the theory of Earth's gravity field and its temporal variations. Space, airborne and terrestrial observational methods associated with absolute, relative, network, and moving-base gravimetry are covered, as well as errors in these techniques. Mathematical models, gravity field parameter transformations, and a selection of applications (e.g., geoid determination, height systems, mass transfer) are also covered.