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‘Mystery volcano’ that erupted and cooled Earth in 1831 has finally been identified

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By illuminem briefings

· 2 min read


illuminem summarizes for you the essential news of the day. Read the full piece on CNN or enjoy below:

🗞️ Driving the news: Scientists have identified Zavaritskii volcano on Simushir Island, in the northwest Pacific’s Kuril Islands, as the source of a major 1831 eruption
This eruption released vast sulfur dioxide into the stratosphere, cooling the Northern Hemisphere by about 1°C during the Little Ice Age
The discovery follows geochemical analysis of ice cores and volcanic ash

🔭 The context: The 1831 eruption was previously attributed to tropical volcanoes like Babuyan Claro in the Philippines, but its actual location was unknown until now
The Kuril Islands, disputed by Russia and Japan, are remote and sparsely studied, complicating historical records
The eruption marked the final cooling phase of the Little Ice Age, which caused widespread climate and societal impacts

🌍 Why it matters for the planet: The study underscores how volcanic eruptions in isolated areas can have global climate repercussions, such as crop failures and famines
Understanding past volcanic events improves predictive capabilities for future eruptions and their potential to disrupt ecosystems, weather, and economies
It highlights the need for better monitoring of remote volcanoes

⏭️ What's next: Researchers plan to examine historical records in Russia and Japan for additional evidence of the eruption
The study calls for improved international cooperation to prepare for large-scale volcanic events
Enhanced monitoring systems could mitigate future global disruptions

💬 One quote: "The moment in the lab analyzing the two ashes together… was a genuine eureka moment," - lead author Dr. William Hutchison, University of St. Andrews

📈 One stat: The 1831 sulfur fallout in Greenland was 6.5 times greater than in Antarctica, confirming the eruption’s Northern Hemisphere origin

Click for more news covering the latest on climate change

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