Active Venus volcanoes make super hot planet even more unwelcoming
Jul 23 2020
Surprising new evidence shows that Venus has active volcanoes. Proof of geologic activity and a warm core dots the ground of the planet in ring-like structures dubbed coronae.
These results may help identify target areas where geologic instruments should be placed on future missions to Venus. They are named Coronae.
The science behind the formations called coronae is similar to that of the Hawaiian Islands, explain researchers from the University of Maryland. These massive crowns on Venus are surrounded by cracks and lines that stretch out from the center. "This examine substantially modifications the watch of Venus from a mostly inactive planet to just one whose inside is nonetheless churning and can feed numerous active volcanoes".
The study was published Monday in the journal Nature Geoscience. Its tectonic activity is evident through faults, coronae, mountains and rift valleys.
Scientists recently discovered 37 volcanic structures on the planet of Venus situated in our solar system.
"Venus is clearly not so geologically dead or dormant as previously thought".
ETH Zurich researchers in Switzerland used simulations to understand the formation and growth of volcanic crowns. With this discovery the scientific outlook about Venus is likely to change. It means the interior of the planet is always churning.
But how recent is this activity? And draw links between that activity and the attributes we see on the surface. "We can say that at least 37 crowns have been active recently", finally says Montési. These 37 crowns are grouped in places, suggesting that some regions are more active than others. Earth has its own "Ring of Fire" in the Pacific Ocean, where active volcanoes and frequent earthquakes contribute to the name. The specific processes by which mantle plumes formed coronae on Venus and the reasons for variation among coronae have been matters for discussion.
The active coronae on Venus are clustered in a handful of locations, rather than being spread evenly over the planet, according to the team behind the study.
As it turns out, the same could be right in different worlds like Venus, even when they bare little resemblance to Earth.
However, the BepiColombo spacecraft bound for Mercury will make a pair of flybys past Venus over the next 13 months.
For this study, data gathered during NASA's Magellan mission, which orbited Venus between 1990 and 1994 and mapped nearly the entirety of the planet, was used to look at the planet's topography.
Researchers have known that Venus has a younger surface for quite some time. Many scientists have described a global resurfacing event between 500 million and 700 million years. The volcanic sites of the planet are, on average, 300 kilometers in diameter, while the largest active volcano on our planet, located in Mauna Loa, Hawaii, is only 120 km. More and more evidence is being collected.
Earth is at a sweet spot in regards to volcanic action. The coronae could help Venus gradually lose its internal heat and create resurfacing on a much smaller scale, Gülcher said. Lots of of the 37 reside inside in a big ring in the planet's Southern Hemisphere, such as a colossal corona named Artemis 1,300 miles (2,100 km) in diameter. It might be possible to grab an eruption on the world's surface. Another interesting find was that most of the active mantle plumes were actually in a band in the Southern Hemisphere of the planet, with only a few of them being outside of it.