Venus is the second planet from the Sun in our solar system. It is similar in size and structure to Earth but has a very harsh environment with extremely high temperatures and pressures.
What is volcanism?
Volcanism refers to the eruption of molten rock (lava), ash, and gases from beneath a planet's surface. It plays a crucial role in shaping the planet's surface and atmosphere.
Why is Venus’s volcanism important?
Studying volcanism on Venus helps scientists understand the planet’s internal heat, geological processes, surface renewal, and interactions with its atmosphere.
What recent discovery was made about Venus’s volcanic activity?
Scientists recently analyzed old radar images from NASA’s Magellan spacecraft and found evidence of new lava flows at two locations, indicating that Venus is more volcanically active than previously known.
When were the radar images taken?
The radar images were taken between 1990 and 1992 by NASA’s Magellan spacecraft.
Where are the new volcanic sites on Venus?
1. Sif Mons: A large volcano about 300 km wide, located in a region called Eistla Regio.
2. Niobe Planitia: A large volcanic plain with new lava flows.
What types of volcanoes are found at these sites?
Both Sif Mons and the volcanoes in Niobe Planitia are shield volcanoes, which have broad, gentle slopes formed by low-viscosity lava flows.
How much area do the new lava flows cover?
Sif Mons: The lava flows cover about 30 sq. km.Niobe Planitia: The lava flows cover about 45 sq. km.
How deep is the new lava at these locations?
The new rock has an average depth of 3 to 20 meters.
What do these findings suggest?
These findings suggest that Venus's volcanic activity is more extensive and comparable to Earth's than previously thought.
How were these findings made possible?
Advances in computing have made it easier to analyze radar data from the Magellan mission, leading to these new discoveries.
SRIRAM’s
Share:
Get a call back
Fill the below form to get free counselling for UPSC Civil Services exam preparation
