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In 1912, a volcano in Alaska more than blew its top. Known as Nova Erupta, it was responsible for the most powerful volcanic eruption of the 20th century.

And the reason we care about the big eruptions because they're also the ones that scale to the biggest hazards and biggest impacts,

both locally and regionally, sometimes globally.

Christy Wallace is a research geologist with the U.S. Geological Survey at the Alaska Volcano Observatory.

We often don't have access to the deep history, the old history. We only have the last 10 or 12,000 years. Glaciers wiped everything

else away. And so because we can't study those, we can't really speak to the biggest eruptions

through the history of the volcano. Now scientists believe they found a way to sluth out the deep

history of volcanoes such as

Novorrupta, and they're doing it with artificial intelligence.

You're listening to Scientific Americans' Science Quickly.

I'm Emily Schweng.

Nova Ruppta dramatically reworked the surrounding landscape and buried nearby communities in more than two feet of ash.

Nova Repta is a volcano, six miles away from another powerful volcano, Mount Catmai. And this wasn't the only time one of these volcanoes proved itself a powerful and dramatic volcanic force.

When we applied our model to 800,000 years of ash layers in the Gulf of Alaska, we saw that Katmai was responsible for producing a lot of the eruption deposits in these marine corps,

going all the way back to 800,000 years.

And they looked almost identical geochemically to the 1912 eruptions.

Jordan Lovers is a third year postdoctoral fellow and geologist with the U.S. Geological Survey.

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