An Ensemble View of Earth's Inner Core

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Science  24 Jan 2003:
Vol. 299, Issue 5606, pp. 529-530
DOI: 10.1126/science.1080685

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It has long been known that Earth's inner core is solid, but its precise structure remains a topic of much debate. In his Perspective, Sambridge compares different computational strategies that have been used to derive the core structure from seismic data. He highlights the "neighbourhood sampling" approach used by Beghein and Trampert, whose results suggest that the structure of the inner core is more complex than previously thought.