Shuffling rotation of the Earth's inner core:
Evidence from Bayesian inversion of earthquake doublets
The image above illustrates the ray-paths of elastic waves of an earthquake doublet from the South Sandwich Islands region travelling through the Earth's inner core to station COLA in Alaska. 7 new doublets and 17 old doublets were analysed to reconstruct the history of inner core rotation with respect to the mantle. This led to the discovery that the rotation rate of the inner core with respect to the mantle is variable in time. A transdimensional Bayesian inversion was used to interpret the travel time data. Image credit: Rhys Hawkins, National Computational Infrastructure
by H. Tkalčić, M.K. Young, T. Bodin, S. Ngo & M. Sambridge
The shuffling rotation of the Earth's inner core revealed by earthquake doublets
Nature Geoscience, DOI:10.1038/NGEO1813, 2013.
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Tkalčić, H., M.K. Young, T. Bodin, S. Ngo and M. Sambridge, The shuffling rotation of the Earth's inner core, Nature Geoscience, doi:10.1038/NGEO1813, 2013.
Article published by Nature Geoscience. Copyright (2013) Nature Publishing Group:
The shuffling rotation of the Earth's inner core revealed by earthquake doublets, Nature Geoscience 6,
497-502, doi:10.1038/ngeo1813, 2013.
accessible via the journal's Website at:
http://www.nature.com/ngeo/journal/v6/n6/full/ngeo1813.html
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