The model will make a step change in being able to analyse Earth’s lithosphere, which is the rigid outer shell, and the underlying mantle to understand the link between Earth’s structure and the dynamic processes within. Juan Carlos Afonso, from Australia’s Macquarie University and Norway’s Centre for Earth Evolution and Dynamics, said, “We are realising the new global model of Earth's lithosphere and upper mantle by combining gravity anomalies, geoid height and gravity gradients complemented with seismic, thermal and rock information. Wolfgang Szwillus from Kiel University, added, “Data from ESA’s GOCE satellite mission served as input for the inversion. It is the first time that gravity gradients have been inverted on a global scale in such an integrated framework.” While this is just a first step, 3D Earth offers tantalising insights into the deep structure of our world. Jörg Ebbing from Kiel University, noted, “This is just a first step so we have more work to do, but we plan to release the 3D Earth models in 2020.” For example, the new models of the thickness of the crust and the lithosphere are important for unexplored continents like Antarctica.
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