Short Wave What Led To The Massive Volcanic Eruption In Tonga
Feb 28, 2022
Geoff Brumfiel, an NPR science correspondent and expert on volcanic eruptions, discusses the recent powerful volcanic eruption in Tonga. He unveils the sequence of events leading to this explosive phenomenon. The conversation delves into Tonga's unique geological landscape, highlighting the emergence of new land from underwater eruptions. Insights into ash samples reveal critical information about magma behavior and the role of an undersea landslide in this eruption's dynamics. The pressing need for better monitoring systems for underwater volcanoes is also emphasized.
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New Island Formation
- In 2015, the Hunga volcano created new land, forming a bridge between two islands.
- Scientist Shane Cronin described this new land as a barren, otherworldly moonscape.
Scientific Interest
- New land formation is rare, making Hunga Tonga-Hunga Ha'apai of interest to scientists.
- NASA studies it for potential insights into similar formations on Mars.
Eruption Timeline and Magnitude
- Starting December 2021, increased volcanic activity and shifts in the island were observed.
- A major eruption on January 15, 2022, was heard over 250 miles away in Fiji.