Solving the mystery of global warming in Venus..volcanoes is the password


Solving the mystery of global warming in Venus..volcanoes is the password

A NASA research paper suggests that volcanic activity helped transform Venus from a temperate world into the acidic hothouse it is today.

The volcanic activity lasted thousands of centuries, and caused the eruption of huge amounts of material that led to the planet Venus turning to this fate.

The paper, published in The Planetary Science Journal, also discusses these “large fire provinces” in Earth’s history, which caused many mass extinctions on our planet millions of years ago.

“By understanding the record of large igneous outbursts on Earth and Venus, we can determine whether these events caused Venus’s current state,” said Dr. Michael J.Y., of the Goddard Institute for Space Studies in New York.

Large igneous counties are the product of periods of large-scale volcanism that lasted tens of thousands or even hundreds of thousands of years. They can deposit more than 100,000 cubic miles of volcanic rock on the surface. At the high end, this molten rock could be enough to bury the entire state of Texas deeply. half a mile.”

Venus today has an average surface temperature of about 864 Fahrenheit and an atmosphere 90 times the pressure of Earth’s surface.

According to the study, these massive volcanic flows may have triggered these conditions sometime in the ancient history of Venus, and in particular many volcanic eruptions could have occurred in a short period of geological time (within a million years). to the runaway greenhouse effect that triggered the planet’s transition from wet and temperate to hot and dry.

“Large fields of solid igneous rock cover 80% of the surface of Venus in total, and while we are not yet sure how many times the events that created these fields occurred, we should be able to narrow them down by studying Earth history”.

Life on Earth has experienced at least five major mass extinction events since the emergence of multicellular life about 540 million years ago, each wiping out more than 50% of animal life across the planet.

According to this study and others, the majority of these extinction events were exacerbated by the types of explosions that produce large igneous interruptions.

In the case of Earth, the climate disturbances caused by these events were not enough to cause the runaway global warming they were on Venus, for reasons that Wei and other scientists are still working to determine.

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