Approaches to constraining East Antarctic rheology using seismic measurements from isolated stations ...

• Main Authors: Askey-Doran, Niam, Turner, Ross, Stål, Tobias, Reading, Anya
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Antarctic; East Antarctic Ice Sheet; East Antarctica; Antarc*; Antarctica; Ice Sheet
• Online Access: https://dx.doi.org/10.57757/iugg23-0769; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016706

<!--!introduction!--> It is becoming apparent that the East Antarctic Ice Sheet may be more vulnerable to changing climate than previously thought. Tomographic studies have revealed significant lateral variations in mantle viscosity across Antarctica, which can strongly influence the results of glacial isostatic adjustment models. Glacial isostatic adjustment is an important consideration in sea-level and ice-sheet studies, necessitating improved constraints on rheology in East Antarctica. Detailed studies of 3D rheology in East Antarctica are challenging due to the sparsity of seismic stations across this region. Stochastic Bayesian approaches to inversion naturally provide information on uncertainties and can be a powerful technique when data is sparse. The utility of such approaches has been demonstrated by the recent results of the Mars InSight mission, in which ensemble model approaches were used to invert for the seismic structure of Mars using recordings from a single seismic station. We employ ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...