Jakarta –
Research by seismologists at the University of California (UC) Berkeley states, the planet’s dense iron core earth grow faster on one side than the other. This has happened since the core froze more than half a billion years ago.
Initially the Earth’s core melted but began to freeze over time. Quoted from Berkeley News, the growth of solid iron cores occurred in the Banda Sea, Indonesia. This condition in fact has no effect on the position of the earth’s core.
This condition is influenced by Earth’s gravity which helps the core to remain balanced. Gravity also makes the nuclear growth evenly distributed, in order to maintain a round nucleus that grows at an average radius of 1 millimeter per year.
However, the increased growth on the one hand suggests something beyond the Earth’s core is emitting heat. The growth rate of the earth’s core in Indonesia is higher than that located in Brazil.
Along with the heat, the faster cooling on the one hand affects the crystallization of iron and the growth of the Earth’s core. Faster crystallization can have an impact on the Earth’s magnetic field and its history.
Convection driven heat release from the core earth This inner part is what ultimately gives rise to the magnetic field. The existence of a magnetic field protects the earth and its inhabitants from the sun’s harmful particles.
“We put a rather loose limit on the age of the inner core, which is between half a billion and 1.5 billion years. So, that could help the debate about how the magnetic field was generated before the dense core in the interior,” said Barbara Romanowicz, Professor of the Department of Graduate Studies. Earth and Planetary Science at UC Berkeley.
“We understand that the magnetic field was formed 3 billion years ago, so other processes must have caused heat convection in the outer core at that time,” he continued.
Apart from the magnetic field, the unbalanced growth of the Earth’s core also explains the crystallization of iron in the deepest part of this blue planet. This question of iron crystallization has intrigued scientists for the last three decades.
Iron crystallization in the Earth’s core seems to be more likely to be aligned along the Earth’s axis of rotation, more towards the west than east. Romanowicz, Daniel Frost of the Berkeley Seismological Laboratory (BSL) and colleagues also created a crystallization model of the Earth’s core.
“The inner core is asymmetrical. The west looks different from the east to the center,” Frost said.
According to Frost, the only thing his team could explain was, one of the core sides earth it grows faster than the others. The difference is, the east side is 60 percent higher than the west side.
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