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Blank, B. (author), Barletta, V. (author), Hu, H. (author), Pappa, F. (author), van der Wal, W. (author)Accurate glacial isostatic adjustment (GIA) models are required for correcting measurements of mass change in Antarctica and for improving knowledge of the sub-surface, especially in areas of large current ice loss such as the Amundsen Sea Embayment (ASE). Regionally, seismic and gravity data suggests lateral differences in viscosity (3D)....journal article 2021
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Engels, Olga (author), Gunter, B.C. (author), Riva, R.E.M. (author), Klees, R. (author)To fully exploit data from the Gravity Recovery and Climate Experiment (GRACE), we separate geophysical signals observed by GRACE in Antarctica by deriving high-spatial resolution maps for present-day glacial isostatic adjustment (GIA) and ice-mass changes with the least possible noise level. For this, we simultaneously (i) improve the...journal article 2018
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Engels, Olga (author)The main goal of this thesis involves the development of a refined methodology to<br/>separate the mass change signals associated with glacial isostatic adjustment (GIA)<br/>from those of surface ice/firn by exploiting the strengths of independent data sets,<br/>such as those from gravimetry, altimetry, climate data, and others. To achieve this,...doctoral thesis 2017
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Ivins, E.R. (author), James, T.S. (author), Wahr, J. (author), Schrama, E.J.O. (author), Landerer, F.W. (author), Simon, K.M. (author)Antarctic volume changes during the past 21 thousand years are smaller than previously thought, and here we construct an ice sheet history that drives a forward model prediction of the glacial isostatic adjustment (GIA) gravity signal. The new model, in turn, should give predictions that are constrained with recent uplift data. The impact of the...journal article 2013
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Auriac, A. (author), Spaans, K.H. (author), Sigmundsson, F. (author), Hooper, A. (author), Schmidt, P. (author), Lund, B. (author)A broad uplift occurs in Iceland in response to the retreat of ice caps, which began circa 1890. Until now, this deformation signal has been measured primarily using GPS at points some distance away from the ice caps. Here, for the first time we use satellite radar interferometry (interferometric synthetic aperture radar) to constrain uplift of...journal article 2013
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King, M.A. (author), Altamimi, Z. (author), Boehm, J. (author), Bos, M. (author), Dach, R. (author), Elosegui, P. (author), Fund, F. (author), Hernández-Pajares, M. (author), Lavallee, D. (author), Riva, E.M. (author)The provision of accurate models of Glacial Isostatic Adjustment (GIA) is presently a priority need in climate studies, largely due to the potential of the Gravity Recovery and Climate Experiment (GRACE) data to be used to determine accurate and continent-wide assessments of ice mass change and hydrology. However, modelled GIA is uncertain due...journal article 2010
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Gunter, B. (author), Urban, T. (author), Riva, R. (author), Helsen, M. (author), Harpold, R. (author), Poole, S. (author), Nagel, P. (author), Schutz, B. (author), Tapley, B. (author)In this study, we present a comparison of coincident GRACE and ICESat data over Antarctica. The analysis focused on the secular changes over a 4-year period spanning from 2003 to 2007, using the recently reprocessed and publicly available data sets for both missions. The results show that the two independent data sets possess strong spatial...journal article 2009