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1. 4. 2018.
Seismological models of Earth's Outer Core derived from normal mode data
The turbulent, convecting outer core is the most massive fluid region of our planet, yet its physical properties are not fully known. The blend of light elements which along with iron and nickel comprise the outer core is uncertain, and mineral physics experiments are extremely challenging at the relevant pressures and temperatures. Published seismological models of the outer core’s velocity show some disagreement, and models of the outer core’s density are few. The commonly-used seismological Preliminary Reference Earth Model is now more than 35 years old and a wealth of new seismological data are now available.