| Summary: | We present results based on forward modelling of signatures related to present and past variations of the Antarctic Ice Sheet. Our calculations are organized according to the time scale of the ice-mass change. First, we implement seasonal and secular ice-mass imbalances acting on an elastic earth. Then, the elastic earth is replaced by a viscoelastic earth, and the glacial-isostatic adjustment due to global Pleistocene deglaciation scenarios is calculated. We predict the resulting geoid-height change and vertical crustal motion for Antarctica and discuss whether the signals generated are sufficiently large to be detected by the GRACE satellite gravity mission and terrestrial GPS stations, respectively.
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