The astronomers observing the Venus made an amazing discovery. They discovered the Ring of Fire on the planet. Several years ago, unusual circular structures were seen on the Venus for the first time. A very high-resolution telescope used in the NASA mission allowed the images to be captured. The discovered structure is similar to the crown. Modern computer technologies made it possible to figure out how these structures could have formed.
The astronomers believe that the formations on the Venus that have strange circular features, may be formed by mantle plumes emerging from the depths of the planet. They are streams of hot molten rock moving from the lower mantle into the crust, which expands, resembling the shape of a mushroom.
At the same time, the mantle plumes carry a huge amount of heat, which melts the crust surface, giving it a rounded shape. The mantle plume rises to the surface continuously, expanding the ring structure at the surface and forming a crown.
The hard crust surrounding the mantle plume is covered with cracks and eventually sinks below the edge of the crown, causing powerful tectonic processes. But the topographic features of that phenomenon are not the same, and therefore they defy a simple description.
Anna Gülcher, who is one of the researchers, claims that the observed structures exist in different forms practically across the entire surface of the Venus. She and her colleagues used the power of 3D modeling to study crowns to establish a connection between the change in surface topography and the processes taking place under it. It turned out that the topographic changes in crowns depend on their thickness and strength, as well as on the volume of the mantle plume and its activity under the surface layer.
The scientists believe that, for example, on the Earth, the dynamics of the Ring of Fire is explained by plate tectonics, and on the Venus, it can be explained by vertical volcanic activity. This is roughly the same phenomenon that is observed on the Earth under the Hawaiian Islands. By studying the mantle plumes of the Venus, the scientists hope to obtain not only new data about the distant planet, but also to compare them with the processes taking place on the Earth.