The magma reservoir under the cascade range has a different depth, size, and complexity, but the upper magma body is spread, according to the Global Scientist’s team at Cornell University and Cascade Volcano Observatory.
The visible lava on the surface is an obvious indicator of the activity, but the long-standing beliefs are expelled during the eruption of active volcanoes, and there are large magma body that breaks down over time as the volcano becomes dormant. That is.
But A New study It is published in the journal Natural global science Challenge this assumption.
The study author has identified the magma chamber under the six volcanoes, six volcanoes of various sizes within the cascade range and six volcanoes.
They discovered that all of the volcanoes, including dormant state, have a sustainable and large magma body.
Given that some of these volcanoes, such as Lake Lake in Oregon, have not been active for thousands of years, the results are surprising.
“Regardless of the frequency of eruptions, you can see a large magma under a lot of volcanoes,” said Dr. Guaning Pan, a researcher at Cornel University.
“These magma bodies seem to be not only active, but also under volcanoes for a lifetime.”
The fact that more volcanoes maintain a magma body is an important consideration on how researchers monitor and predict future volcanic activities.
“We thought that if we found a large amount of magma, we thought it would increase the potential of eruptions, but now we change the perception that this is the baseline situation,” said Dr. Pan. Ta.
The result suggests that the eruption does not completely discharge the magma chamber, indicating that it eliminates excessive amounts and pressure instead.
The chamber can gradually solve the crust, so it can be slowly expanded and replenished over time.
“With a general understanding of where the magma is, I was able to do a good job rather than optimizing monitoring,” said Professor Jeffrey Aberters of Cornell University.
“There are many volcanoes that are sparse or not intensive research.”
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G. bread et al。 Partial melting long life under the volcano in the cascade range. nut. GeosciReleased online on January 23, 2025. Doi: 10.1038/S41561-024-01630-Y
Source: www.sci.news
