Optimising the understanding of the East Antarctic lithosphere through the ‘GRIT’ geophysical instrument facility, computational approaches and current/future field campaigns ...

• Main Authors: Reading, Anya, Stål, Tobias, Kelly, Ian, Askey-Doran, Niam, Turner, Ross, Tkalčić, Hrvoje, King, Matt, Selway, Kate
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Antarctic; East Antarctica; New Ground; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.57757/iugg23-1149; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017470

<!--!introduction!--> The lithosphere of East Antarctica, undoubtedly as complex as its neighbours in Gondwana, presents particular challenges in progressing the understanding of its tectonic nature due to its remote location and the harsh environment for on-ground geophysical instruments. Satellite-based and airborne data gathering has enabled composite maps for subglacial topography and potential field properties to be developed (e.g., Bedmap3, ADMAP2, ADGRAV) while international initiatives (such as 3D-Earth) provide 3D reference models of the crust and upper mantle with improving on-ground constraints for properties such as seismic wavespeed. In this contribution, we share information on a new facility ‘Geophysical Research Instrumentation for AnTarctica’ (GRIT) that is enabling new ground-based data to be collected across multiple geophysical techniques (currently seismic, magnetotelluric, GNSS). We present an updated seismic crustal structure for the East Antarctic sector between Mawson and ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...