Members of the scientific community have recently been fascinated by the structure of the Earth beneath our feet, and it turns out to be much more complex than originally thought.
First, we heard the news that there is a huge ocean under the Earth’s crust that contains more water than all the seas on the surface.
Now, another study has been published that thoroughly examined the geology under the southern hemisphere.
New research published in Scientists advanceIt found evidence that the entire ocean floor extends virtually the full length around the core.
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It is a relatively thin layer located at the core-mantle boundary about 1,800 miles below Earth’s surface. It is an ancient formation that could provide more information about the structure of the planet beneath our feet.
Geologist Samantha Hansen and her colleagues at the University of Alabama led the research. They observed the structure using 15 observing stations under the ice of Antarctica, mapping the earthquake waves.
This allowed them to analyze the Earth’s subsurface structure, including very low-velocity regions where waves move much slower.
“Seismic surveys, like ours, provide the highest resolution images of the internal structure of our planet, and we are finding that this structure is much more complex than previously thought,” Hansen said.
“Under analysis [thousands] “The seismic records from Antarctica, and our high-resolution imaging method found thin anomalies of CMB everywhere we looked,” said geophysicist Edward Garnero of Arizona State University.
“The thickness of the material varies from a few kilometers to [tens] of kilometres. This indicates that we see mountains in the center, in some places as high as five times Mount Everest.”
“Our research provides important links between Earth’s surface and deep structure and the global processes that drive our planet,” Hansen added.
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