Why the Earth's core rotates to the East?

The 300 years old's puzzle was finally solved. Scientists at the University of Leeds found out that the Earth core rotates to the east. Earth's core, which is made ​​of solid metal, and perform the eastward super-rotation much more rapidly than other parts of the Earth. Also the opposite direction of rotation with the sheath of Earth's core, which rotates to the west at a lower velocity.

Earth has multiple layers: the crust, the mantle, the liquid outer core and the solid inner core. (Picture from: http://www.livescience.com/)

Actually the westward movement of geomagnetic field has been put forward in 1962 by Edmund Halley, a scientist which also known as discoverer of the Halley comet. But this time the scientists succeeded in connecting the Earth's core rotation and the sheath of Earth's core movement as an influence result of the Earth's geomagnetic field.

The study results were published in the Proceedings of the National Academy of Sciences journal, on September 16, 2013. And also helped the researchers to explain the Earth's core dynamics, which is the source of the planet's magnetic field. In the last few decades seismometer identify the eastward rotation, which shows the Earth's core conducting super-rotation.

"Magnetic field pushing the Earth's core rotates eastward, faster than the Earth's rotation and at the same time pushes the liquid sheath of the Earth's core is rotating in the opposite direction," said Philip Livermore, a researcher from the School of Earth and Environment at the University of Leeds.

Dr Livermore’s team used a model of the Earth’s core which was run on the giant super-computer Monte Rosa in Lugano, Switzerland. The scientists were able to simulate the Earth’s core with accuracy about 100 times better than other models. (Picture from: http://www.sci-news.com/)

The Earth's core which has the size of the Moon, wrapped by a liquid metal sheath. Actually the Earth's internal magnetic field is changing slowly, and causing electro magnetic power push inner and outer core to change over the time. It is triggers fluctuations in the rotational motion of Earth's core to the east, a phenomenon that has been reported since the last 50 years.

Another study focused on the archaeological artifacts and hundreds to thousands of years old rocks concluded that there's no rotational movement to the west. Rotational movement to the east has actually been happening in the last 3,000 years. *** [EKA | FROM VARIOUS SOURCES | LIVESCIENCE | GABRIEL TITIYOGA | KORAN TEMPO 4352]
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