Chinese Scientists Claim to Find Earth's Core, Refute Old Opinion
In superionic metal alloys, light elements become disorganized and diffuse like liquids in a lattice, while Fe atoms remain organized and vibrate around the lattice, forming a solid metal framework. The diffusion coefficients of C, H, and O in superionic metal alloys are the same as in molten Fe.
"It is quite abnormal. The solidification of iron at the inner core boundary does not change the mobility of these light elements, and the convection of light elements is continuous in the inner core," said Prof. HE Yu, lead author and correspondent of the study.
One of the old mysteries about the inner core is that it is quite malleable with fairly low shear wave velocities.
The researchers calculated the seismic velocities in these superionic metal alloys and found a significant decrease in the shear wave velocities.
"Our results fit well with seismological observations. It is the liquid-like elements that make the inner core soften," said another IGCAS researcher, SUN Shichuan.
Highly diffused light elements can affect seismic velocities, providing important clues for understanding other mysteries in the inner core. (scitech daily/ant/mcr20/jpnn)
This news has been broadcast on JPNN.com with the title: Ilmuwan China Menemukan Inti Bumi, Bantah Pendapat Lama
A group of Chinese researchers from the IGCAS has made new claims about the Earth's core.
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