For the first time, scientists have properly looked at the very low speed region. These magical pockets of rock are located near the core of the Earth, about 3,000 kilometers below the surface.
Working at this depth is clearly difficult, but we know they exist because of the way seismic waves flow from the Earth. These regions get their names from the way seismic waves slow down as they pass by.
To date, images of these regions have been rotten and difficult to examine-but the image, published today in a new study, shows the region below Hawaii in more detail and provides new insights into internal work and history of our planet.
“Of all the deep interior features of the Earth, this is the most fascinating and complex,” said geophysicist Shi Li of the University of Cambridge in the United Kingdom. “We already have the first concrete evidence of its internal structure. A real landmark in deep-earth seismology. ” . ”
Innovative computer modeling techniques have been used to produce the image, which are techniques applied to a high -frequency signal that is recorded when seismic waves change at very low regional speeds. It gives experts a one-kilometer-level view of the rocky enclave, which increases accuracy by an order of magnitude when it comes to studying the boundaries between the Earth’s iron-nickel core and the mantle. The flow of hot mantle rock causes earthquakes, volcanoes, and other related activity, and scientists are interested in learning more about how the very low velocity zones trigger or affect this activity. .
Scientists have also discovered a link between ultra-low velocity fields and volcanic hotspots such as in Hawaii and Iceland.
Better images of this deep and mysterious region should also help this field of research, as scientists are also examining basalt rock surfaces in Hawaii to find evidence of core seepage.
The research was published in a journal Communication in Nature.
Source: Science Alert
Source: Arabic RT
