The Earth's deep 3D processes: a seismic activity will come under control

The Earth's deep 3D processes

Due to the three-dimensional images of deep processes, science will be able to learn in more detail about the seismic activity of our planet. Geophysicists from the University of Texas are engaged in their creation. They use the earthquake data, a powerful computing technique with full waveform inversion. All that is necessary for creating three-dimensional images of the geometry of subducting plates and induced mantle flows in the Earth's layers.

The supercomputers help create three-dimensional images of all deep processes, while having high resolution. The researchers studied the mantle flows under Central America and the Caribbean, eventually creating their three-dimensional images.

Jidong Young and Robert Stern note that the thin layer of the Earth's crust and the inner core have a “gasket”, a mantle. It is considered a solid rock, but over millions of years, these hard rocks flow like the liquids. The crust is broken by tectonic plates, which gradually move into the mantle in subduction zones.

And it is one of the most important processes that occur in the depths of the planet. The nature of the mantle flow has been poorly studied by the science. Any new data allows you to get new information about the dynamism of the Earth.

The scientists were able to get them using a geophysical measurement called a seismic anisotropy. It measures the difference in the speed of propagation of mechanical waves caused by the earthquakes. Inside the Earth, these waves move in different directions.

Compiled images have high accuracy. They represent processes over 10 years, including 180 earthquakes recorded by nearly 4,500 stations. The scientists say that before they did not have the opportunity to know what happens underground.

But now the new technology allows them to get a detailed analysis of the data of geological processes and makes it possible to control the seismic phenomena.