Tag

Magma Chamber

All articles tagged with #magma chamber

planet-earth1 month ago•63 min saved

Descending into Iceland’s molten heart: the world’s only magma-chamber tour

Thríhnúkagígur, a dormant volcano near Reykjavík, hosts the world’s only magma chamber accessible to visitors, reached via an open cable elevator that lowers guests about 210 meters into a hollow chamber whose walls glow with colors from microbes and minerals. Scientists believe the last magma feeding the chamber occurred around 4,500 years ago, with magma likely draining back into the crust, making it a rare geological feature and a unique tourism experience.

via Live Science|

#geology #iceland #magma-chamber

geology2 years ago•3 min saved

1300 Years Ago: Santorini Caldera Eruption as Violent as 2022 Tonga Eruption

A new study reveals that an eruption at Santorini volcano 1,300 years ago was far more violent than previously thought, with a magnitude similar to the 2022 Tonga eruption. The findings suggest that explosive blasts can occur even in periods of relative quiet, challenging previous assumptions about the volcano's behavior. The eruption ejected a significant amount of material, indicating an elevated hazard potential for the eastern Mediterranean region. This research highlights the need for continued monitoring and assessment of volcanic activity in the area.

via Livescience.com|

#caldera #eruption #explosive-blasts

science2 years ago•2 min saved

"Unprecedented Volcanic Activity: Dormant Supervolcano Awakens After Millennia"

Researchers from Caltech have created detailed underground images of the Long Valley Caldera, a region in California sitting atop a dormant supervolcano. The images reveal that recent seismic activity is a result of cooling and settling, rather than preparation for another supervolcanic eruption. The magma chamber is covered by a hardened lid of crystallized rock. The researchers used fiber optic cables and distributed acoustic sensing (DAS) to measure seismic events and develop the images. This study provides valuable insights into crustal dynamics and the subsurface environment of other regions.

via India Today|

#distributed-acoustic-sensing-das #long-valley-caldera #magma-chamber

science-and-environment2 years ago•2 min saved

Unveiling the Hidden Depths of Yellowstone: New Imaging Reveals Surprising Discoveries

New imaging tools have provided scientists with a better understanding of the underground activity in Yellowstone National Park, revealing the distribution of semi-liquid material in horizontal layers within the magma chamber. This improved understanding can help in predicting volcanic systems, earthquakes, and eruptions. However, the findings do not indicate that Yellowstone is any closer to a massive eruption, as the underground remains mostly solid. The most recent volcanic eruption in the park occurred approximately 70,000 years ago.

via Wyoming Public Media|

#imaging #magma-chamber #predicting-eruptions

science-and-technology2 years ago•3 min saved

Yellowstone's Dormant Volcano: Scientists Assess Preparedness for Potential Eruption

Scientists studying the Yellowstone Volcano have deployed 650 temporary seismometers to measure seismic wave speeds in the magma chamber, resulting in the best image of the chamber ever seen. The research has revealed that the magma chamber is stratified, with partially molten sills towards the top. The study also suggests that the percentage of semi-liquid or melt material in the chamber may be higher than previously thought, possibly as high as 28%. However, experts emphasize that this does not mean an eruption is imminent, as a melt percentage of 50% is needed for the magma to become mobile. The research provides valuable insights into understanding volcanic systems and improving eruption forecasts. Scientists urge the public to rely on information from experts and not be swayed by sensationalized headlines and misinformation.

via Casper Star-Tribune|

#eruption-forecasts #magma-chamber #research

natural-disasters2 years ago•3 min saved

"Scientists Acknowledge Unpreparedness for Catastrophic Yellowstone Supervolcano Eruption"

Scientists studying the Yellowstone supervolcano admit that despite advancements in understanding its magma chamber reservoir, the world is not prepared for the potential devastation of an eruption. The last eruption occurred approximately 640,000 years ago, and the average time between eruptions is around 660,000 years. The volcano's size and complexity make it highly unpredictable, and geologists warn that natural systems can throw unexpected curveballs. While there are currently no signs of an imminent eruption, intense seismic activity would likely be the first indicator. Small eruptions are more common, but a supervolcano eruption is inevitable in the future.

via Express|

#eruption #magma-chamber #natural-disasters

natural-disasters2 years ago•3 min saved

Apocalyptic Devastation: The Terrifying Power of the World's Scariest Supervolcano

Scientists have discovered that the amount of molten rock beneath the Yellowstone supervolcano is higher than previously estimated, although there are currently no signs of an imminent eruption. Researchers believe that the first sign of an eruption would be the ground rising, potentially lifting the whole caldera, an area the size of Houston and Dallas, 10 feet or more into the air. This would trigger a massive evacuation within a 200-mile hazard zone. Swarms of earthquakes and harmonic tremors would also be warning signs before an eruption. While attempts have been made to prevent a future eruption, such as increasing the amount of water inside the volcano, the risks and costs involved have led to the abandonment of these plans.

via Express|

#eruption #evacuation #magma-chamber

science2 years ago•3 min saved

"Surprising Discovery: Yellowstone Supervolcano's Magma Chamber Holds Vast Reserves of Molten Rock"

A new study has found that the amount of melted rock beneath Yellowstone's supervolcano is higher than previously estimated, providing a more detailed view of the enormous magma chamber beneath the national park. The upper magma reservoir, which consists of two chambers, was found to contain 28% melt, 8-12% more than previous estimates. While there is no sign of an imminent eruption, understanding the proportion of liquid in magma reservoirs can help evaluate the risk of volcanic eruptions in other areas. However, scientists still cannot be certain about the composition of the supervolcano and are looking forward to further interpretation of geophysical data.

via Livescience.com|

#eruption-risk #magma-chamber #science

science-and-environment2 years ago•3 min saved

"Surprising Discovery: Yellowstone Supervolcano's Magma Chamber Holds Vast Reserves of Molten Rock"

A new study has found that the amount of melted rock beneath Yellowstone's supervolcano is higher than previously estimated, with the upper magma reservoir containing 28% melt. While there is no sign of an imminent eruption, understanding the proportion of liquid in magma reservoirs can help evaluate the risk of volcanic eruptions in other areas. The methodology used in the study provided detailed insights into the composition of the magma chamber, which consists of solid rock, semi-liquid crystals, gases, and other volatile substances. Further research is needed to fully understand the dynamics of the Yellowstone supervolcano and its eruption potential.

via Yahoo Life|

#magma-chamber #science-and-environment #seismic-waves