Using a technique to study seismic waves, researchers revealed a previously unknown magma chamber underneath a the Kolumbo submarine volcano.
A submarine volcano whose deadly eruption shattered the picturesque Greek island of Santorini nearly 400 years ago has a growing, never-before-seen magma chamber that could fuel another massive eruption within the next 150 years, a new study finds.
Undersea volcanoes are monitored just like their on-land counterparts, but because undersea seismometers are challenging to install, there are fewer of them, which means scientists have less data on undersea volcanoes. In an attempt to overcome this problem, researchers decided to try a different technique to study the inner mechanics of Kolumbo.
"Full-waveform inversion is similar to a medical ultrasound," co-author Michele Paulatto , a volcanologist at Imperial College London, said in a statement ."It uses sound waves to construct an image of the underground structure of a volcano."Seismic waves travel at different speeds through Earth depending on the rigidity of the rock they're passing through.
Data from the seismic recordings showed a significant decrease in velocity underneath the volcano, indicating the presence of a magma chamber, rather than just solid rock. Further calculations revealed that the magma chamber has been growing at a rate of 141 million cubic feet per year ever since its eruption in 1650.
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