New findings: Core Earth Turns Has Also Core

Astronomy Science ~ By the age of 4.5 billion years, the Earth that we live in is still the biggest mystery to humans. One of which is bein...

Astronomy Science ~ By the age of 4.5 billion years, the Earth that we live in is still the biggest mystery to humans. One of which is being sought the answer is, whether the hell that is in the core of our planet?

Previous studies revealed that the Earth's core is estimated to reach 6,000 degrees Celsius. As hot as the surface of the sun.

More recently, a number of scientists get another clue. The researchers from China and the United States found the deepest core of the Earth appears to have another area of ​​the center. Not a single unit.

A team of experts believe, the crystal structure of metals (iron crystal) were different from those found in the outer layer of the core. The report is published in the scientific journal Nature Geoscience.

This picture shows the core of the Earth that has a nucleus in again.

However, because it is not possible to drill the Earth's core, the core composition still be something mysterious. So, instead, scientists use the echoes generated by the earthquake to study the planet's core human - by analyzing the changes at resonance propagates through the different layers of the Earth.

"The wave is reflected back and forth from one side of the Earth to the other side," said Professor Xiaodong Song, of the University of Illinois at Urbana-Champaign. The professor and his colleagues in China said, these data indicate that the Earth's core - solid region the size of the Moon - consists of 2 parts.

Seismic wave data shows, the crystals in the 'inner core' has aligned east-west direction, then turned, when viewed from above the North Pole. Meanwhile, the outer core line from north to south.

So, what is the importance of new findings about the Earth's core? "The fact that we find a structure that is not the same in different regions of the core, tells us about the history of the Earth that is very long," said Professor Song.

Earth's core, which is located at a depth of more than 5,000 km below the surface of the ground, began to harden around 1 billion years ago. And continues to grow by about 0.5 mm per year. The finding that the Earth's core has a crystal with different flow shows, the process of formation in different conditions. Human Planet, may have undergone dramatic changes during this period.

Commenting on the results of the research, Professor Simon Redfern from the University of Cambridge said, "proving far into the solid core to the inside, such as tracing the past, to the early formation of the Earth."

While some people may have noticed a difference in the seismic wave propagation in the outer core. "But never was proposed about groove metal crystals that make up this region are perverse or not the same as compared to the outside.

If this is what happens, it could mean there are powerful forces contribute. Moreover, other studies have shown that the Earth's magnetic field may have changed about half a billion years ago, switching between the equator and the axis of the polar axis.

"It could be that the strange grooves in the innermost core explaining palaeomagnetic traces of ancient rocks that exist near the equator since half a billion years ago," he said.

However, for the moment, said Redfern, the research team of Professor Song require other tests to analyze the seismic properties of the inner core of the Earth. Therefore, there are no previous studies that produce a similar conclusion. As a comparison.

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AstroNation: New findings: Core Earth Turns Has Also Core
New findings: Core Earth Turns Has Also Core