A new study has provided fresh insights into the Yellowstone Caldera’s volcanic activity, suggesting that a magma cap may play a crucial role in releasing pressure and reducing the likelihood of massive eruptions. According to Michael Poland, scientist in charge of the Yellowstone Volcano Observatory, researchers have discovered a 200-foot thick magma cap that allows bubbles to accumulate and then be transferred to the surface, effectively reducing pressure.
Poland notes that this discovery is significant because it highlights the effectiveness of seismic imaging techniques in observing the Earth’s interior. This technique, which involves using earthquake waves to “take an MRI” of the Earth, has allowed scientists to visualize the magma cap and gain a better understanding of Yellowstone’s volcanic system.
Contrary to popular depictions in science fiction, Poland suggests that Yellowstone is unlikely to produce massive volcanic explosions. Instead, most eruptions are characterized by lava flows, which have been relatively rare in recent times. Hydrothermal explosions, on the other hand, are more common and can result in energetic geyser eruptions.
The findings of this study provide a significant update on our understanding of Yellowstone’s volcanic activity and highlight the importance of continued research into this fascinating region.
Source: https://www.scrippsnews.com/science-and-tech/a-magma-cap-discovered-underneath-yellowstone-could-be-moderating-its-volcanic-potential