Monday, July 15, 2024

Scientists discover the deepest region of the Earth


Earth as seen through the lens of the Deep Space Climate Observatory satellite.

In order to understand the origin and evolution of the planets, scientists have been studying the center of the Earth for a very long time, and recently they made a huge discovery related to the inner part of the planet Earth.

Until recently, it was believed that the crust, mantle, outer core, and inner core make up the structure of the Earth. But new research published in Nature Communications Confirms that there is indeed a fifth layer.

according to New study Scientists have made unheard-of observations of a mysterious metallic sphere that resides within Earth’s deep core, revealing a structure that has long been the subject of speculation but has never been seen in such detail.

Researchers said the extensive study of Earth’s deep interior, based on the behavior of seismic waves from large earthquakes, has confirmed the existence of a distinct structure within our planet’s inner core – a superheated solid ball of iron and nickel about 800 miles (1,350 km) across. ) wide.

Earth’s diameter is about 7,900 miles (12,750 km). The inner structure of the planet consists of four layers: a rocky crust on the outside, then a rocky mantle, an outer core made of magma and a solid inner core. This metallic inner core, which is about 1,500 miles (2,440) across, was discovered in the 1930s, also based on seismic waves traveling through the Earth.

“We may know more about the surface of distant celestial bodies than we do deep in our planet’s interior,” said Than-Soon Pham, a seismologist from the Australian National University in Canberra, lead author of the study published in the journal Nature Communications.

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“We analyzed digital records of ground motion, known as seismograms, from large earthquakes in the past decade. Our study is made possible by the unprecedented expansion of global earthquake networks, particularly dense networks in the neighboring United States, the Alaskan Peninsula and over the European Alps.”

“Earth’s inner core (IC), which is less than 1% of Earth’s volume, is a time capsule of our planet’s history. As the IC grows, the latent heat and light elements released from the solidification process drive convection into the liquid outer core,” Pham and Tkalcik said in the study. Which in turn maintains the geodynamo.

Referring to the mechanism that generates Earth’s magnetic field, they said, “As the IC grows, the latent heat and light elements released from the solidification process drive the convection of the liquid outer core, which in turn maintains the geodynamo.”

(With inputs from Reuters)

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